SmogRank / Episodes / India
Northern India, March and April 2025
For 15 days, from 23 March to 6 April 2025, 45 cities in India had PM2.5 at least twice their usual for the time of year. The worst reading was Loni, Uttar Pradesh, India: 255.0 µg/m³ on 23 March, about 2.3× its usual 110.0.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 45 in 1 country
Days 15 23 March to 6 April 2025
Worst day 27 March 19 cities counted
Furthest above usual 8.9× Rishīkesh
Day by day
Play 27 March 19 cities at twice their usual or more
Buxar Arrah Chāpra Varanasi Gorakhpur Patna Muzaffarpur Gaya Singrauli Begusarai Kathmandu Saharsa Bhāgalpur Lucknow Satna Arāria Kanpur Barbil Kishanganj Belpahar Joda Bilāspur Damoh Angul Raipur Bareilly Bhilai Byasanagar Durg Kolkata Rajākheri Haldia Saugor Cuttack Fīrozābād Gwalior Bhubaneswar Morādābād Agra Dhaulpur Vrindāvan Khurja Bharatpur Bulandshahr Dhaka Nagpur Hāpur Greater Noida Dādri Karauli Mandideep Meerut Bhopal Faridabad Noida Dera Māndi Delhi Aya Nagar Gurugram Bārān Bhiwadi Narela Najafgarh Agartala Bawāna Alwar Dausa Jhālāwār Amravati Kota Charkhi Dādri Tonk Jaipur Būndi Dewas Ujjain Akola Chandigarh Indore Baddi Silchar Pithampur Jhunjhunūn Aizawl Sīkar Ropar Gobindgarh Khanna Ratlām Chūru Bhilwara Ajmer Pratāpgarh Chittorgarh Ludhiana Jalgaon Bānswāra Jalandhar Bathinda Rājsamand Nāgaur Udaipur Dhule Dūngarpur Pāli Malegaon Bikaner Nandri Jodhpur Sirohi Jalor Undera Gandhinagar Ahmedabad Ankleshwar Surat Vapi Sawai Madhopur Dehradun Āsansol Hājīpur Katihar Jabalpur Rājgīr Sri Ganganagar Munger Keonjhargarh Sasarām Baripāda Durgapur Bāghpat Naharlagun Mohali Patiāla Dera Colliery Township Nalbāri Loni Prayagraj Bhelai Purnia Muzaffarnagar Ghāziābād Jhānsi Shillong Shrīrāmpur Rānīganj Mothīhāri Bihār Sharīf Bettiah Hanumāngarh Samāstipur Nagaon Kohima Guwahati Gangtok Rairangpur Rourkela Siliguri Maihar Siwān Aurangābād Rishīkesh 20 Mar 23 26 29 1 Apr 4 7 9 Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.
How it spread
Loni Loni, 20 March: 161.0 µg/m³ Loni, 21 March: 158.0 µg/m³ Loni, 22 March: 199.0 µg/m³ Loni, 23 March: 255.0 µg/m³, 2.3× its usual 110.0 Loni, 24 March: no reading Loni, 25 March: no reading Loni, 26 March: 287.0 µg/m³ Loni, 27 March: 326.0 µg/m³ Loni, 28 March: 219.0 µg/m³ Loni, 29 March: 166.0 µg/m³ Loni, 30 March: 159.0 µg/m³ Loni, 31 March: 172.0 µg/m³ Loni, 1 April: 188.0 µg/m³ Loni, 2 April: 271.0 µg/m³ Loni, 3 April: 263.0 µg/m³ Loni, 4 April: 248.0 µg/m³ Loni, 5 April: no reading Loni, 6 April: 198.0 µg/m³ Loni, 7 April: 121.0 µg/m³ Loni, 8 April: 115.0 µg/m³ Loni, 9 April: no reading Muzaffarnagar Muzaffarnagar, 20 March: 84.1 µg/m³ Muzaffarnagar, 21 March: 57.8 µg/m³ Muzaffarnagar, 22 March: 78.9 µg/m³ Muzaffarnagar, 23 March: 131.0 µg/m³, 2.5× its usual 53.4 Muzaffarnagar, 24 March: no reading Muzaffarnagar, 25 March: 116.0 µg/m³, 2.2× its usual 53.4 Muzaffarnagar, 26 March: no reading Muzaffarnagar, 27 March: 74.7 µg/m³ Muzaffarnagar, 28 March: 66.1 µg/m³ Muzaffarnagar, 29 March: 53.9 µg/m³ Muzaffarnagar, 30 March: 40.7 µg/m³ Muzaffarnagar, 31 March: 43.7 µg/m³ Muzaffarnagar, 1 April: 48.0 µg/m³ Muzaffarnagar, 2 April: 48.4 µg/m³ Muzaffarnagar, 3 April: 60.3 µg/m³ Muzaffarnagar, 4 April: 50.9 µg/m³ Muzaffarnagar, 5 April: 38.8 µg/m³ Muzaffarnagar, 6 April: 60.3 µg/m³ Muzaffarnagar, 7 April: 78.5 µg/m³ Muzaffarnagar, 8 April: 73.2 µg/m³ Muzaffarnagar, 9 April: no reading Bāghpat Bāghpat, 20 March: no reading Bāghpat, 21 March: 65.0 µg/m³ Bāghpat, 22 March: 86.8 µg/m³ Bāghpat, 23 March: 119.0 µg/m³, 2.2× its usual 53.4 Bāghpat, 24 March: no reading Bāghpat, 25 March: no reading Bāghpat, 26 March: 130.0 µg/m³ Bāghpat, 27 March: 121.0 µg/m³ Bāghpat, 28 March: no reading Bāghpat, 29 March: no reading Bāghpat, 30 March: 44.8 µg/m³ Bāghpat, 31 March: 58.6 µg/m³ Bāghpat, 1 April: 67.7 µg/m³ Bāghpat, 2 April: 82.0 µg/m³ Bāghpat, 3 April: 89.8 µg/m³ Bāghpat, 4 April: 78.9 µg/m³ Bāghpat, 5 April: 58.9 µg/m³ Bāghpat, 6 April: 77.1 µg/m³ Bāghpat, 7 April: 97.3 µg/m³ Bāghpat, 8 April: 98.0 µg/m³ Bāghpat, 9 April: no reading Hanumāngarh Hanumāngarh, 20 March: 48.2 µg/m³ Hanumāngarh, 21 March: no reading Hanumāngarh, 22 March: 79.0 µg/m³ Hanumāngarh, 23 March: 76.5 µg/m³, 2.9× its usual 26.5 Hanumāngarh, 24 March: 65.7 µg/m³, 2.5× its usual 26.3 Hanumāngarh, 25 March: no reading Hanumāngarh, 26 March: 62.4 µg/m³ Hanumāngarh, 27 March: 45.8 µg/m³ Hanumāngarh, 28 March: 53.9 µg/m³ Hanumāngarh, 29 March: 69.9 µg/m³ Hanumāngarh, 30 March: 75.3 µg/m³ Hanumāngarh, 31 March: 61.5 µg/m³ Hanumāngarh, 1 April: 74.0 µg/m³ Hanumāngarh, 2 April: 58.4 µg/m³ Hanumāngarh, 3 April: 48.8 µg/m³ Hanumāngarh, 4 April: 50.1 µg/m³ Hanumāngarh, 5 April: 68.0 µg/m³ Hanumāngarh, 6 April: 51.2 µg/m³ Hanumāngarh, 7 April: 50.4 µg/m³ Hanumāngarh, 8 April: 63.4 µg/m³ Hanumāngarh, 9 April: no reading Mohali Mohali, 20 March: 29.6 µg/m³ Mohali, 21 March: 30.0 µg/m³ Mohali, 22 March: 38.0 µg/m³ Mohali, 23 March: 58.2 µg/m³, 2.1× its usual 27.8 Mohali, 24 March: 62.3 µg/m³, 2.3× its usual 27.2 Mohali, 25 March: no reading Mohali, 26 March: no reading Mohali, 27 March: 43.6 µg/m³ Mohali, 28 March: 37.7 µg/m³ Mohali, 29 March: 24.5 µg/m³ Mohali, 30 March: 33.6 µg/m³ Mohali, 31 March: 29.3 µg/m³ Mohali, 1 April: 39.9 µg/m³ Mohali, 2 April: 49.0 µg/m³ Mohali, 3 April: 38.6 µg/m³ Mohali, 4 April: 44.6 µg/m³ Mohali, 5 April: no reading Mohali, 6 April: no reading Mohali, 7 April: 62.2 µg/m³ Mohali, 8 April: 68.1 µg/m³ Mohali, 9 April: no reading Rishīkesh Rishīkesh, 20 March: 34.2 µg/m³ Rishīkesh, 21 March: 29.6 µg/m³ Rishīkesh, 22 March: 35.4 µg/m³ Rishīkesh, 23 March: 44.3 µg/m³, 8.9× its usual 1.2 Rishīkesh, 24 March: no reading Rishīkesh, 25 March: no reading Rishīkesh, 26 March: 97.6 µg/m³ Rishīkesh, 27 March: 38.1 µg/m³ Rishīkesh, 28 March: 33.3 µg/m³ Rishīkesh, 29 March: 36.9 µg/m³ Rishīkesh, 30 March: 25.4 µg/m³ Rishīkesh, 31 March: 30.7 µg/m³ Rishīkesh, 1 April: 29.0 µg/m³ Rishīkesh, 2 April: 43.6 µg/m³ Rishīkesh, 3 April: 41.0 µg/m³ Rishīkesh, 4 April: 37.9 µg/m³ Rishīkesh, 5 April: 42.4 µg/m³ Rishīkesh, 6 April: 42.6 µg/m³ Rishīkesh, 7 April: 38.5 µg/m³ Rishīkesh, 8 April: 63.5 µg/m³ Rishīkesh, 9 April: no reading Ghāziābād Ghāziābād, 20 March: 98.2 µg/m³ Ghāziābād, 21 March: 54.7 µg/m³ Ghāziābād, 22 March: 84.0 µg/m³ Ghāziābād, 23 March: 106.0 µg/m³ Ghāziābād, 24 March: 126.0 µg/m³, 2.0× its usual 62.0 Ghāziābād, 25 March: 158.0 µg/m³, 2.5× its usual 62.1 Ghāziābād, 26 March: 116.0 µg/m³ Ghāziābād, 27 March: 117.0 µg/m³ Ghāziābād, 28 March: 66.6 µg/m³ Ghāziābād, 29 March: 32.2 µg/m³ Ghāziābād, 30 March: 31.6 µg/m³ Ghāziābād, 31 March: 39.6 µg/m³ Ghāziābād, 1 April: 51.9 µg/m³ Ghāziābād, 2 April: 160.0 µg/m³ Ghāziābād, 3 April: no reading Ghāziābād, 4 April: 136.0 µg/m³ Ghāziābād, 5 April: 81.9 µg/m³ Ghāziābād, 6 April: 98.8 µg/m³ Ghāziābād, 7 April: 128.0 µg/m³ Ghāziābād, 8 April: no reading Ghāziābād, 9 April: no reading Sri Ganganagar Sri Ganganagar, 20 March: 58.3 µg/m³ Sri Ganganagar, 21 March: 72.2 µg/m³ Sri Ganganagar, 22 March: 61.0 µg/m³ Sri Ganganagar, 23 March: 55.2 µg/m³ Sri Ganganagar, 24 March: 64.4 µg/m³, 2.0× its usual 31.7 Sri Ganganagar, 25 March: 65.3 µg/m³, 2.1× its usual 30.8 Sri Ganganagar, 26 March: 69.3 µg/m³ Sri Ganganagar, 27 March: 43.7 µg/m³ Sri Ganganagar, 28 March: 48.3 µg/m³ Sri Ganganagar, 29 March: 46.3 µg/m³ Sri Ganganagar, 30 March: 42.6 µg/m³ Sri Ganganagar, 31 March: 53.7 µg/m³ Sri Ganganagar, 1 April: 82.4 µg/m³ Sri Ganganagar, 2 April: 69.8 µg/m³ Sri Ganganagar, 3 April: 55.9 µg/m³ Sri Ganganagar, 4 April: 40.2 µg/m³ Sri Ganganagar, 5 April: 59.6 µg/m³ Sri Ganganagar, 6 April: 72.0 µg/m³ Sri Ganganagar, 7 April: 49.5 µg/m³ Sri Ganganagar, 8 April: 64.4 µg/m³ Sri Ganganagar, 9 April: no reading Rourkela Rourkela, 20 March: 58.5 µg/m³ Rourkela, 21 March: 48.3 µg/m³ Rourkela, 22 March: 21.5 µg/m³ Rourkela, 23 March: 26.4 µg/m³ Rourkela, 24 March: 56.0 µg/m³ Rourkela, 25 March: 165.0 µg/m³, 3.2× its usual 51.4 Rourkela, 26 March: 103.4 µg/m³, 2.0× its usual 51.4 Rourkela, 27 March: 82.3 µg/m³ Rourkela, 28 March: 185.0 µg/m³, 3.6× its usual 51.0 Rourkela, 29 March: 116.2 µg/m³, 2.3× its usual 50.9 Rourkela, 30 March: 48.7 µg/m³ Rourkela, 31 March: 68.5 µg/m³ Rourkela, 1 April: 113.3 µg/m³, 2.2× its usual 50.5 Rourkela, 2 April: 100.4 µg/m³ Rourkela, 3 April: 86.2 µg/m³ Rourkela, 4 April: 85.1 µg/m³ Rourkela, 5 April: 103.1 µg/m³, 2.0× its usual 50.5 Rourkela, 6 April: 12.7 µg/m³ Rourkela, 7 April: 76.1 µg/m³ Rourkela, 8 April: 54.7 µg/m³ Rourkela, 9 April: no reading Siwān Siwān, 20 March: no reading Siwān, 21 March: 119.0 µg/m³ Siwān, 22 March: no reading Siwān, 23 March: no reading Siwān, 24 March: no reading Siwān, 25 March: 144.0 µg/m³, 4.3× its usual 33.8 Siwān, 26 March: 146.0 µg/m³, 4.2× its usual 34.8 Siwān, 27 March: no reading Siwān, 28 March: no reading Siwān, 29 March: 47.2 µg/m³ Siwān, 30 March: 63.3 µg/m³ Siwān, 31 March: 85.2 µg/m³, 2.5× its usual 33.5 Siwān, 1 April: 85.8 µg/m³, 2.6× its usual 33.3 Siwān, 2 April: 70.0 µg/m³, 2.1× its usual 33.3 Siwān, 3 April: 85.4 µg/m³, 2.5× its usual 33.5 Siwān, 4 April: 74.2 µg/m³, 2.2× its usual 33.5 Siwān, 5 April: 90.6 µg/m³, 2.7× its usual 33.5 Siwān, 6 April: no reading Siwān, 7 April: no reading Siwān, 8 April: no reading Siwān, 9 April: no reading Samāstipur Samāstipur, 20 March: no reading Samāstipur, 21 March: no reading Samāstipur, 22 March: no reading Samāstipur, 23 March: no reading Samāstipur, 24 March: no reading Samāstipur, 25 March: 114.0 µg/m³, 2.9× its usual 38.9 Samāstipur, 26 March: 77.8 µg/m³, 2.0× its usual 38.6 Samāstipur, 27 March: 82.7 µg/m³, 2.1× its usual 38.6 Samāstipur, 28 March: 58.7 µg/m³ Samāstipur, 29 March: 27.3 µg/m³ Samāstipur, 30 March: 31.1 µg/m³ Samāstipur, 31 March: 46.4 µg/m³ Samāstipur, 1 April: 37.2 µg/m³ Samāstipur, 2 April: 39.9 µg/m³ Samāstipur, 3 April: 37.0 µg/m³ Samāstipur, 4 April: 39.1 µg/m³ Samāstipur, 5 April: 37.4 µg/m³ Samāstipur, 6 April: 40.7 µg/m³ Samāstipur, 7 April: no reading Samāstipur, 8 April: 30.5 µg/m³ Samāstipur, 9 April: no reading Rānīganj Rānīganj, 20 March: 55.7 µg/m³ Rānīganj, 21 March: 51.1 µg/m³ Rānīganj, 22 March: 17.7 µg/m³ Rānīganj, 23 March: 45.1 µg/m³ Rānīganj, 24 March: 75.0 µg/m³ Rānīganj, 25 March: 92.9 µg/m³, 2.5× its usual 36.9 Rānīganj, 26 March: 95.7 µg/m³, 2.6× its usual 36.2 Rānīganj, 27 March: 78.2 µg/m³, 2.2× its usual 35.3 Rānīganj, 28 March: 71.1 µg/m³, 2.1× its usual 34.2 Rānīganj, 29 March: 65.6 µg/m³ Rānīganj, 30 March: 64.0 µg/m³ Rānīganj, 31 March: 52.3 µg/m³ Rānīganj, 1 April: 43.2 µg/m³ Rānīganj, 2 April: 43.6 µg/m³ Rānīganj, 3 April: 61.3 µg/m³ Rānīganj, 4 April: 56.4 µg/m³ Rānīganj, 5 April: 57.4 µg/m³ Rānīganj, 6 April: 47.9 µg/m³ Rānīganj, 7 April: 27.4 µg/m³ Rānīganj, 8 April: 21.1 µg/m³ Rānīganj, 9 April: no reading Shrīrāmpur Shrīrāmpur, 20 March: 28.1 µg/m³ Shrīrāmpur, 21 March: 33.8 µg/m³ Shrīrāmpur, 22 March: 24.8 µg/m³ Shrīrāmpur, 23 March: 42.4 µg/m³ Shrīrāmpur, 24 March: 61.1 µg/m³ Shrīrāmpur, 25 March: 87.5 µg/m³, 2.6× its usual 33.2 Shrīrāmpur, 26 March: 44.4 µg/m³ Shrīrāmpur, 27 March: 45.6 µg/m³ Shrīrāmpur, 28 March: 56.5 µg/m³ Shrīrāmpur, 29 March: 58.8 µg/m³ Shrīrāmpur, 30 March: 52.6 µg/m³ Shrīrāmpur, 31 March: 43.9 µg/m³ Shrīrāmpur, 1 April: 37.2 µg/m³ Shrīrāmpur, 2 April: 26.8 µg/m³ Shrīrāmpur, 3 April: 35.5 µg/m³ Shrīrāmpur, 4 April: 49.8 µg/m³ Shrīrāmpur, 5 April: 48.4 µg/m³ Shrīrāmpur, 6 April: 29.1 µg/m³ Shrīrāmpur, 7 April: 15.4 µg/m³ Shrīrāmpur, 8 April: 15.8 µg/m³ Shrīrāmpur, 9 April: no reading Aurangābād Aurangābād, 20 March: no reading Aurangābād, 21 March: 43.0 µg/m³ Aurangābād, 22 March: 69.4 µg/m³ Aurangābād, 23 March: 98.4 µg/m³ Aurangābād, 24 March: 86.0 µg/m³ Aurangābād, 25 March: 82.0 µg/m³, 4.1× its usual 19.9 Aurangābād, 26 March: 78.5 µg/m³, 3.9× its usual 19.9 Aurangābād, 27 March: 159.0 µg/m³, 7.8× its usual 20.5 Aurangābād, 28 March: 81.2 µg/m³, 4.0× its usual 20.5 Aurangābād, 29 March: 82.8 µg/m³, 4.1× its usual 20.2 Aurangābād, 30 March: 93.7 µg/m³, 4.6× its usual 20.5 Aurangābād, 31 March: 93.1 µg/m³, 4.6× its usual 20.3 Aurangābād, 1 April: 74.1 µg/m³, 3.6× its usual 20.7 Aurangābād, 2 April: 94.1 µg/m³, 4.5× its usual 20.9 Aurangābād, 3 April: 88.7 µg/m³, 4.2× its usual 20.9 Aurangābād, 4 April: 67.4 µg/m³, 3.2× its usual 20.8 Aurangābād, 5 April: 94.7 µg/m³, 4.6× its usual 20.7 Aurangābād, 6 April: 88.4 µg/m³, 4.3× its usual 20.5 Aurangābād, 7 April: 85.2 µg/m³ Aurangābād, 8 April: 78.0 µg/m³ Aurangābād, 9 April: no reading Dehradun Dehradun, 20 March: 18.6 µg/m³ Dehradun, 21 March: 20.5 µg/m³ Dehradun, 22 March: 23.8 µg/m³ Dehradun, 23 March: 40.5 µg/m³ Dehradun, 24 March: 54.2 µg/m³ Dehradun, 25 March: 68.0 µg/m³, 2.0× its usual 33.2 Dehradun, 26 March: 62.4 µg/m³ Dehradun, 27 March: 42.2 µg/m³ Dehradun, 28 March: 38.5 µg/m³ Dehradun, 29 March: 32.6 µg/m³ Dehradun, 30 March: 30.4 µg/m³ Dehradun, 31 March: 29.1 µg/m³ Dehradun, 1 April: 30.8 µg/m³ Dehradun, 2 April: 35.2 µg/m³ Dehradun, 3 April: 35.0 µg/m³ Dehradun, 4 April: 30.2 µg/m³ Dehradun, 5 April: 30.9 µg/m³ Dehradun, 6 April: 47.9 µg/m³ Dehradun, 7 April: 51.6 µg/m³ Dehradun, 8 April: 59.2 µg/m³ Dehradun, 9 April: no reading Patiāla Patiāla, 20 March: 36.0 µg/m³ Patiāla, 21 March: 33.7 µg/m³ Patiāla, 22 March: 42.5 µg/m³ Patiāla, 23 March: 57.6 µg/m³ Patiāla, 24 March: 56.5 µg/m³ Patiāla, 25 March: 67.4 µg/m³, 2.3× its usual 29.8 Patiāla, 26 March: no reading Patiāla, 27 March: 68.9 µg/m³ Patiāla, 28 March: 54.8 µg/m³ Patiāla, 29 March: 28.6 µg/m³ Patiāla, 30 March: 25.8 µg/m³ Patiāla, 31 March: 40.6 µg/m³ Patiāla, 1 April: 55.7 µg/m³ Patiāla, 2 April: 64.4 µg/m³ Patiāla, 3 April: 49.6 µg/m³ Patiāla, 4 April: 41.0 µg/m³ Patiāla, 5 April: 31.7 µg/m³ Patiāla, 6 April: 42.2 µg/m³ Patiāla, 7 April: 58.1 µg/m³ Patiāla, 8 April: 61.6 µg/m³ Patiāla, 9 April: no reading Prayagraj Prayagraj, 20 March: 68.8 µg/m³ Prayagraj, 21 March: 46.9 µg/m³ Prayagraj, 22 March: 34.0 µg/m³ Prayagraj, 23 March: 24.7 µg/m³ Prayagraj, 24 March: 49.6 µg/m³ Prayagraj, 25 March: 59.8 µg/m³, 2.4× its usual 25.1 Prayagraj, 26 March: 39.7 µg/m³ Prayagraj, 27 March: 35.8 µg/m³ Prayagraj, 28 March: 38.5 µg/m³ Prayagraj, 29 March: 25.2 µg/m³ Prayagraj, 30 March: 28.2 µg/m³ Prayagraj, 31 March: 27.3 µg/m³ Prayagraj, 1 April: 27.6 µg/m³ Prayagraj, 2 April: 42.1 µg/m³ Prayagraj, 3 April: 39.8 µg/m³ Prayagraj, 4 April: 40.4 µg/m³ Prayagraj, 5 April: 44.2 µg/m³ Prayagraj, 6 April: 39.7 µg/m³ Prayagraj, 7 April: 47.8 µg/m³ Prayagraj, 8 April: 40.6 µg/m³ Prayagraj, 9 April: no reading Sawai Madhopur Sawai Madhopur, 20 March: 42.9 µg/m³ Sawai Madhopur, 21 March: 50.9 µg/m³ Sawai Madhopur, 22 March: 38.1 µg/m³ Sawai Madhopur, 23 March: 39.6 µg/m³ Sawai Madhopur, 24 March: 49.3 µg/m³ Sawai Madhopur, 25 March: 54.0 µg/m³, 2.0× its usual 26.4 Sawai Madhopur, 26 March: 57.4 µg/m³ Sawai Madhopur, 27 March: 51.2 µg/m³ Sawai Madhopur, 28 March: 35.4 µg/m³ Sawai Madhopur, 29 March: 36.4 µg/m³ Sawai Madhopur, 30 March: 47.2 µg/m³ Sawai Madhopur, 31 March: 50.7 µg/m³ Sawai Madhopur, 1 April: 44.2 µg/m³ Sawai Madhopur, 2 April: 44.9 µg/m³ Sawai Madhopur, 3 April: 54.3 µg/m³ Sawai Madhopur, 4 April: 63.7 µg/m³ Sawai Madhopur, 5 April: 65.9 µg/m³ Sawai Madhopur, 6 April: 66.2 µg/m³ Sawai Madhopur, 7 April: 64.4 µg/m³ Sawai Madhopur, 8 April: 63.7 µg/m³ Sawai Madhopur, 9 April: no reading Jhānsi Jhānsi, 20 March: 30.3 µg/m³ Jhānsi, 21 March: 33.7 µg/m³ Jhānsi, 22 March: 29.1 µg/m³ Jhānsi, 23 March: 21.2 µg/m³ Jhānsi, 24 March: 31.7 µg/m³ Jhānsi, 25 March: 46.9 µg/m³, 2.6× its usual 17.9 Jhānsi, 26 March: 45.3 µg/m³ Jhānsi, 27 March: 52.2 µg/m³ Jhānsi, 28 March: 36.0 µg/m³ Jhānsi, 29 March: 34.8 µg/m³ Jhānsi, 30 March: 34.6 µg/m³ Jhānsi, 31 March: 41.9 µg/m³ Jhānsi, 1 April: 38.3 µg/m³ Jhānsi, 2 April: 44.2 µg/m³, 2.2× its usual 20.1 Jhānsi, 3 April: 51.7 µg/m³ Jhānsi, 4 April: 68.0 µg/m³ Jhānsi, 5 April: 92.8 µg/m³ Jhānsi, 6 April: 99.3 µg/m³ Jhānsi, 7 April: 74.2 µg/m³ Jhānsi, 8 April: 48.5 µg/m³ Jhānsi, 9 April: no reading Mothīhāri Mothīhāri, 20 March: 62.8 µg/m³ Mothīhāri, 21 March: 38.8 µg/m³ Mothīhāri, 22 March: 37.9 µg/m³ Mothīhāri, 23 March: 26.5 µg/m³ Mothīhāri, 24 March: 61.9 µg/m³ Mothīhāri, 25 March: 82.2 µg/m³ Mothīhāri, 26 March: 118.0 µg/m³, 2.7× its usual 44.1 Mothīhāri, 27 March: 89.4 µg/m³, 2.0× its usual 43.8 Mothīhāri, 28 March: 28.9 µg/m³ Mothīhāri, 29 March: 17.0 µg/m³ Mothīhāri, 30 March: no reading Mothīhāri, 31 March: no reading Mothīhāri, 1 April: no reading Mothīhāri, 2 April: 27.9 µg/m³ Mothīhāri, 3 April: 16.7 µg/m³ Mothīhāri, 4 April: 22.1 µg/m³ Mothīhāri, 5 April: 22.9 µg/m³ Mothīhāri, 6 April: 28.0 µg/m³ Mothīhāri, 7 April: 21.5 µg/m³ Mothīhāri, 8 April: no reading Mothīhāri, 9 April: no reading Āsansol Āsansol, 20 March: 62.4 µg/m³ Āsansol, 21 March: 49.2 µg/m³ Āsansol, 22 March: 25.5 µg/m³ Āsansol, 23 March: 44.3 µg/m³ Āsansol, 24 March: 67.3 µg/m³ Āsansol, 25 March: 89.7 µg/m³ Āsansol, 26 March: 95.4 µg/m³, 2.0× its usual 47.1 Āsansol, 27 March: 78.8 µg/m³ Āsansol, 28 March: 85.1 µg/m³ Āsansol, 29 March: 67.1 µg/m³ Āsansol, 30 March: 77.3 µg/m³ Āsansol, 31 March: 85.8 µg/m³ Āsansol, 1 April: 59.6 µg/m³ Āsansol, 2 April: 51.7 µg/m³ Āsansol, 3 April: 76.2 µg/m³ Āsansol, 4 April: 62.1 µg/m³ Āsansol, 5 April: 69.5 µg/m³ Āsansol, 6 April: 68.5 µg/m³ Āsansol, 7 April: 33.4 µg/m³ Āsansol, 8 April: 17.6 µg/m³ Āsansol, 9 April: no reading Bettiah Bettiah, 20 March: 44.8 µg/m³ Bettiah, 21 March: 31.9 µg/m³ Bettiah, 22 March: 28.4 µg/m³ Bettiah, 23 March: no reading Bettiah, 24 March: no reading Bettiah, 25 March: 53.7 µg/m³ Bettiah, 26 March: 72.1 µg/m³, 2.9× its usual 25.2 Bettiah, 27 March: 67.8 µg/m³, 2.7× its usual 25.0 Bettiah, 28 March: 47.9 µg/m³, 2.0× its usual 23.5 Bettiah, 29 March: 26.9 µg/m³ Bettiah, 30 March: 46.6 µg/m³, 2.1× its usual 22.1 Bettiah, 31 March: no reading Bettiah, 1 April: 48.8 µg/m³, 2.3× its usual 21.6 Bettiah, 2 April: 35.3 µg/m³ Bettiah, 3 April: 43.0 µg/m³, 2.0× its usual 21.2 Bettiah, 4 April: 33.3 µg/m³ Bettiah, 5 April: 36.8 µg/m³ Bettiah, 6 April: 58.0 µg/m³, 2.7× its usual 21.2 Bettiah, 7 April: no reading Bettiah, 8 April: 31.8 µg/m³ Bettiah, 9 April: no reading Rairangpur Rairangpur, 20 March: no reading Rairangpur, 21 March: 38.3 µg/m³ Rairangpur, 22 March: 19.9 µg/m³ Rairangpur, 23 March: 27.1 µg/m³ Rairangpur, 24 March: 39.4 µg/m³ Rairangpur, 25 March: 48.2 µg/m³ Rairangpur, 26 March: 60.1 µg/m³, 2.1× its usual 29.1 Rairangpur, 27 March: 58.0 µg/m³, 2.0× its usual 28.3 Rairangpur, 28 March: no reading Rairangpur, 29 March: no reading Rairangpur, 30 March: 86.3 µg/m³, 3.6× its usual 23.8 Rairangpur, 31 March: 68.7 µg/m³, 2.9× its usual 23.8 Rairangpur, 1 April: 57.7 µg/m³, 2.4× its usual 24.5 Rairangpur, 2 April: 50.9 µg/m³ Rairangpur, 3 April: 54.3 µg/m³, 2.1× its usual 25.8 Rairangpur, 4 April: 60.6 µg/m³, 2.3× its usual 25.8 Rairangpur, 5 April: 63.9 µg/m³, 2.7× its usual 23.8 Rairangpur, 6 April: no reading Rairangpur, 7 April: 49.6 µg/m³ Rairangpur, 8 April: 23.5 µg/m³ Rairangpur, 9 April: no reading Hājīpur Hājīpur, 20 March: 103.0 µg/m³ Hājīpur, 21 March: 78.0 µg/m³ Hājīpur, 22 March: 68.9 µg/m³ Hājīpur, 23 March: 70.0 µg/m³ Hājīpur, 24 March: 109.0 µg/m³ Hājīpur, 25 March: 122.0 µg/m³ Hājīpur, 26 March: 149.0 µg/m³ Hājīpur, 27 March: 169.0 µg/m³, 2.0× its usual 82.7 Hājīpur, 28 March: 92.5 µg/m³ Hājīpur, 29 March: 92.7 µg/m³ Hājīpur, 30 March: 69.8 µg/m³ Hājīpur, 31 March: 95.3 µg/m³ Hājīpur, 1 April: 89.2 µg/m³ Hājīpur, 2 April: 85.4 µg/m³ Hājīpur, 3 April: 85.8 µg/m³ Hājīpur, 4 April: 102.0 µg/m³ Hājīpur, 5 April: 108.0 µg/m³ Hājīpur, 6 April: 96.5 µg/m³ Hājīpur, 7 April: 72.9 µg/m³ Hājīpur, 8 April: 39.4 µg/m³ Hājīpur, 9 April: no reading Nalbāri Nalbāri, 20 March: 127.0 µg/m³ Nalbāri, 21 March: 130.0 µg/m³ Nalbāri, 22 March: 124.0 µg/m³ Nalbāri, 23 March: 133.0 µg/m³ Nalbāri, 24 March: no reading Nalbāri, 25 March: 133.0 µg/m³ Nalbāri, 26 March: no reading Nalbāri, 27 March: 115.0 µg/m³, 2.3× its usual 50.5 Nalbāri, 28 March: 94.5 µg/m³ Nalbāri, 29 March: no reading Nalbāri, 30 March: no reading Nalbāri, 31 March: no reading Nalbāri, 1 April: 72.0 µg/m³ Nalbāri, 2 April: no reading Nalbāri, 3 April: no reading Nalbāri, 4 April: 81.2 µg/m³, 2.1× its usual 38.1 Nalbāri, 5 April: 91.8 µg/m³ Nalbāri, 6 April: 60.8 µg/m³ Nalbāri, 7 April: 80.0 µg/m³ Nalbāri, 8 April: 81.2 µg/m³ Nalbāri, 9 April: no reading Guwahati Guwahati, 20 March: 87.8 µg/m³ Guwahati, 21 March: 113.2 µg/m³ Guwahati, 22 March: 92.0 µg/m³ Guwahati, 23 March: 122.0 µg/m³ Guwahati, 24 March: 92.7 µg/m³ Guwahati, 25 March: 123.0 µg/m³ Guwahati, 26 March: 126.0 µg/m³ Guwahati, 27 March: 112.0 µg/m³, 3.2× its usual 34.8 Guwahati, 28 March: 112.0 µg/m³, 3.2× its usual 34.8 Guwahati, 29 March: 67.9 µg/m³, 2.1× its usual 33.1 Guwahati, 30 March: 83.8 µg/m³, 2.6× its usual 32.6 Guwahati, 31 March: 86.9 µg/m³, 2.8× its usual 31.4 Guwahati, 1 April: 92.6 µg/m³, 3.0× its usual 31.2 Guwahati, 2 April: 82.8 µg/m³, 2.7× its usual 31.1 Guwahati, 3 April: 96.2 µg/m³, 3.1× its usual 31.2 Guwahati, 4 April: 101.0 µg/m³, 3.2× its usual 31.1 Guwahati, 5 April: 98.6 µg/m³ Guwahati, 6 April: 56.9 µg/m³ Guwahati, 7 April: 52.9 µg/m³ Guwahati, 8 April: 90.2 µg/m³ Guwahati, 9 April: no reading Sasarām Sasarām, 20 March: 61.0 µg/m³ Sasarām, 21 March: 38.8 µg/m³ Sasarām, 22 March: 50.1 µg/m³ Sasarām, 23 March: 89.4 µg/m³ Sasarām, 24 March: 75.8 µg/m³ Sasarām, 25 March: 74.1 µg/m³ Sasarām, 26 March: 84.5 µg/m³ Sasarām, 27 March: 104.0 µg/m³, 2.1× its usual 49.1 Sasarām, 28 March: 83.9 µg/m³ Sasarām, 29 March: 94.8 µg/m³, 2.3× its usual 41.5 Sasarām, 30 March: 69.7 µg/m³ Sasarām, 31 March: 78.8 µg/m³, 2.2× its usual 35.9 Sasarām, 1 April: 84.1 µg/m³, 2.5× its usual 33.6 Sasarām, 2 April: 101.0 µg/m³, 3.0× its usual 33.6 Sasarām, 3 April: 94.3 µg/m³, 2.5× its usual 37.3 Sasarām, 4 April: 81.4 µg/m³ Sasarām, 5 April: 84.4 µg/m³ Sasarām, 6 April: 88.2 µg/m³ Sasarām, 7 April: 99.0 µg/m³ Sasarām, 8 April: 78.5 µg/m³ Sasarām, 9 April: no reading Siliguri Siliguri, 20 March: 98.5 µg/m³ Siliguri, 21 March: 89.2 µg/m³ Siliguri, 22 March: 65.3 µg/m³ Siliguri, 23 March: 41.1 µg/m³ Siliguri, 24 March: 45.1 µg/m³ Siliguri, 25 March: 73.6 µg/m³ Siliguri, 26 March: no reading Siliguri, 27 March: 101.0 µg/m³, 2.8× its usual 36.0 Siliguri, 28 March: 88.0 µg/m³, 2.5× its usual 35.1 Siliguri, 29 March: 95.3 µg/m³, 2.8× its usual 34.0 Siliguri, 30 March: 93.8 µg/m³, 2.9× its usual 32.2 Siliguri, 31 March: 125.0 µg/m³, 3.9× its usual 32.1 Siliguri, 1 April: no reading Siliguri, 2 April: 72.2 µg/m³, 2.3× its usual 31.7 Siliguri, 3 April: 99.2 µg/m³, 3.2× its usual 31.4 Siliguri, 4 April: 116.0 µg/m³, 3.6× its usual 31.9 Siliguri, 5 April: 93.7 µg/m³ Siliguri, 6 April: 81.9 µg/m³ Siliguri, 7 April: 58.0 µg/m³ Siliguri, 8 April: 65.2 µg/m³ Siliguri, 9 April: no reading Durgapur Durgapur, 20 March: 40.3 µg/m³ Durgapur, 21 March: 35.9 µg/m³ Durgapur, 22 March: 20.6 µg/m³ Durgapur, 23 March: 36.5 µg/m³ Durgapur, 24 March: 57.1 µg/m³ Durgapur, 25 March: 64.0 µg/m³ Durgapur, 26 March: 61.8 µg/m³ Durgapur, 27 March: 87.1 µg/m³, 2.2× its usual 40.0 Durgapur, 28 March: 68.8 µg/m³ Durgapur, 29 March: 65.4 µg/m³ Durgapur, 30 March: 64.6 µg/m³ Durgapur, 31 March: 36.9 µg/m³ Durgapur, 1 April: 32.9 µg/m³ Durgapur, 2 April: 34.9 µg/m³ Durgapur, 3 April: 45.6 µg/m³ Durgapur, 4 April: 54.2 µg/m³ Durgapur, 5 April: 49.1 µg/m³ Durgapur, 6 April: 41.7 µg/m³ Durgapur, 7 April: 29.5 µg/m³ Durgapur, 8 April: 20.1 µg/m³ Durgapur, 9 April: no reading Nagaon Nagaon, 20 March: 57.1 µg/m³ Nagaon, 21 March: 60.0 µg/m³ Nagaon, 22 March: 65.4 µg/m³ Nagaon, 23 March: 46.1 µg/m³ Nagaon, 24 March: 38.5 µg/m³ Nagaon, 25 March: 46.3 µg/m³ Nagaon, 26 March: 66.1 µg/m³ Nagaon, 27 March: 86.9 µg/m³, 3.0× its usual 29.2 Nagaon, 28 March: 83.0 µg/m³, 2.7× its usual 30.2 Nagaon, 29 March: 60.9 µg/m³, 2.2× its usual 27.3 Nagaon, 30 March: 55.2 µg/m³, 2.1× its usual 26.3 Nagaon, 31 March: 53.5 µg/m³, 2.0× its usual 26.3 Nagaon, 1 April: 63.9 µg/m³, 2.4× its usual 26.3 Nagaon, 2 April: 56.5 µg/m³, 2.2× its usual 26.2 Nagaon, 3 April: 57.0 µg/m³, 2.2× its usual 26.3 Nagaon, 4 April: no reading Nagaon, 5 April: 61.9 µg/m³ Nagaon, 6 April: no reading Nagaon, 7 April: no reading Nagaon, 8 April: no reading Nagaon, 9 April: no reading Kohima Kohima, 20 March: 82.9 µg/m³ Kohima, 21 March: 47.6 µg/m³ Kohima, 22 March: 33.1 µg/m³ Kohima, 23 March: 31.2 µg/m³ Kohima, 24 March: 39.4 µg/m³ Kohima, 25 March: 39.9 µg/m³ Kohima, 26 March: 55.2 µg/m³ Kohima, 27 March: 78.7 µg/m³, 2.8× its usual 27.7 Kohima, 28 March: 87.7 µg/m³, 3.2× its usual 27.1 Kohima, 29 March: 79.3 µg/m³, 2.9× its usual 27.0 Kohima, 30 March: 80.0 µg/m³, 3.0× its usual 26.3 Kohima, 31 March: 80.8 µg/m³, 3.1× its usual 26.3 Kohima, 1 April: 68.4 µg/m³, 2.7× its usual 25.7 Kohima, 2 April: 61.9 µg/m³, 2.4× its usual 26.3 Kohima, 3 April: 61.2 µg/m³, 2.3× its usual 27.0 Kohima, 4 April: 65.5 µg/m³, 2.4× its usual 27.0 Kohima, 5 April: 61.7 µg/m³ Kohima, 6 April: 59.4 µg/m³ Kohima, 7 April: 2.5 µg/m³ Kohima, 8 April: 0.1 µg/m³ Kohima, 9 April: no reading Munger Munger, 20 March: no reading Munger, 21 March: no reading Munger, 22 March: 32.3 µg/m³ Munger, 23 March: 39.0 µg/m³ Munger, 24 March: 43.4 µg/m³ Munger, 25 March: 54.1 µg/m³ Munger, 26 March: 57.0 µg/m³ Munger, 27 March: 65.1 µg/m³, 2.0× its usual 32.5 Munger, 28 March: 66.8 µg/m³, 2.1× its usual 31.9 Munger, 29 March: 52.8 µg/m³ Munger, 30 March: 45.4 µg/m³ Munger, 31 March: 52.5 µg/m³ Munger, 1 April: 41.0 µg/m³ Munger, 2 April: 31.4 µg/m³ Munger, 3 April: 48.5 µg/m³ Munger, 4 April: 47.9 µg/m³ Munger, 5 April: 56.5 µg/m³ Munger, 6 April: 61.9 µg/m³ Munger, 7 April: 53.9 µg/m³ Munger, 8 April: no reading Munger, 9 April: no reading Gangtok Gangtok, 20 March: 57.1 µg/m³ Gangtok, 21 March: 55.6 µg/m³ Gangtok, 22 March: no reading Gangtok, 23 March: no reading Gangtok, 24 March: no reading Gangtok, 25 March: 28.0 µg/m³ Gangtok, 26 March: 51.0 µg/m³ Gangtok, 27 March: 63.2 µg/m³, 2.5× its usual 24.8 Gangtok, 28 March: 70.6 µg/m³, 2.9× its usual 24.3 Gangtok, 29 March: 70.9 µg/m³, 3.0× its usual 23.5 Gangtok, 30 March: 67.0 µg/m³, 2.9× its usual 23.3 Gangtok, 31 March: 61.1 µg/m³, 2.6× its usual 23.3 Gangtok, 1 April: 62.5 µg/m³, 2.7× its usual 23.5 Gangtok, 2 April: 74.5 µg/m³, 3.1× its usual 24.0 Gangtok, 3 April: 75.5 µg/m³, 3.1× its usual 24.0 Gangtok, 4 April: 79.5 µg/m³, 3.3× its usual 24.0 Gangtok, 5 April: 72.4 µg/m³ Gangtok, 6 April: 73.8 µg/m³ Gangtok, 7 April: no reading Gangtok, 8 April: no reading Gangtok, 9 April: no reading Naharlagun Naharlagun, 20 March: no reading Naharlagun, 21 March: 48.8 µg/m³ Naharlagun, 22 March: no reading Naharlagun, 23 March: no reading Naharlagun, 24 March: no reading Naharlagun, 25 March: no reading Naharlagun, 26 March: 47.9 µg/m³ Naharlagun, 27 March: 57.7 µg/m³, 2.2× its usual 26.3 Naharlagun, 28 March: 60.6 µg/m³, 2.3× its usual 25.9 Naharlagun, 29 March: 48.9 µg/m³ Naharlagun, 30 March: no reading Naharlagun, 31 March: 52.1 µg/m³, 2.0× its usual 25.9 Naharlagun, 1 April: no reading Naharlagun, 2 April: 53.9 µg/m³, 2.4× its usual 22.8 Naharlagun, 3 April: 55.3 µg/m³, 2.4× its usual 22.6 Naharlagun, 4 April: 52.7 µg/m³, 2.3× its usual 22.5 Naharlagun, 5 April: 59.7 µg/m³ Naharlagun, 6 April: no reading Naharlagun, 7 April: no reading Naharlagun, 8 April: no reading Naharlagun, 9 April: no reading Shillong Shillong, 20 March: 98.1 µg/m³ Shillong, 21 March: 74.6 µg/m³ Shillong, 22 March: 22.3 µg/m³ Shillong, 23 March: 60.6 µg/m³ Shillong, 24 March: 37.0 µg/m³ Shillong, 25 March: 53.3 µg/m³ Shillong, 26 March: 62.1 µg/m³ Shillong, 27 March: 51.4 µg/m³, 2.3× its usual 22.5 Shillong, 28 March: 40.7 µg/m³ Shillong, 29 March: 28.9 µg/m³ Shillong, 30 March: 52.2 µg/m³, 2.6× its usual 19.9 Shillong, 31 March: 49.4 µg/m³, 2.6× its usual 19.2 Shillong, 1 April: 37.6 µg/m³, 2.0× its usual 18.8 Shillong, 2 April: 34.0 µg/m³ Shillong, 3 April: 36.1 µg/m³, 2.1× its usual 17.1 Shillong, 4 April: 29.4 µg/m³ Shillong, 5 April: 29.3 µg/m³ Shillong, 6 April: 44.2 µg/m³ Shillong, 7 April: 39.9 µg/m³ Shillong, 8 April: 38.2 µg/m³ Shillong, 9 April: no reading Katihar Katihar, 20 March: no reading Katihar, 21 March: no reading Katihar, 22 March: no reading Katihar, 23 March: 16.4 µg/m³ Katihar, 24 March: 35.3 µg/m³ Katihar, 25 March: 41.7 µg/m³ Katihar, 26 March: 46.8 µg/m³ Katihar, 27 March: 50.0 µg/m³, 2.0× its usual 24.6 Katihar, 28 March: 46.7 µg/m³ Katihar, 29 March: 37.4 µg/m³ Katihar, 30 March: 39.0 µg/m³ Katihar, 31 March: 50.3 µg/m³, 2.1× its usual 24.1 Katihar, 1 April: no reading Katihar, 2 April: no reading Katihar, 3 April: no reading Katihar, 4 April: 35.7 µg/m³ Katihar, 5 April: 42.7 µg/m³ Katihar, 6 April: no reading Katihar, 7 April: no reading Katihar, 8 April: no reading Katihar, 9 April: no reading Purnia Purnia, 20 March: 64.0 µg/m³ Purnia, 21 March: 54.3 µg/m³ Purnia, 22 March: 51.7 µg/m³ Purnia, 23 March: no reading Purnia, 24 March: 60.3 µg/m³ Purnia, 25 March: 86.5 µg/m³ Purnia, 26 March: 90.3 µg/m³ Purnia, 27 March: no reading Purnia, 28 March: 107.0 µg/m³, 2.4× its usual 44.4 Purnia, 29 March: 60.6 µg/m³ Purnia, 30 March: 59.8 µg/m³ Purnia, 31 March: 87.5 µg/m³ Purnia, 1 April: 79.0 µg/m³ Purnia, 2 April: 80.9 µg/m³ Purnia, 3 April: 73.3 µg/m³ Purnia, 4 April: 58.4 µg/m³ Purnia, 5 April: 80.3 µg/m³ Purnia, 6 April: 77.3 µg/m³ Purnia, 7 April: no reading Purnia, 8 April: no reading Purnia, 9 April: no reading Dera Colliery Towns… Dera Colliery Township, 20 March: no reading Dera Colliery Township, 21 March: no reading Dera Colliery Township, 22 March: no reading Dera Colliery Township, 23 March: no reading Dera Colliery Township, 24 March: no reading Dera Colliery Township, 25 March: no reading Dera Colliery Township, 26 March: no reading Dera Colliery Township, 27 March: no reading Dera Colliery Township, 28 March: no reading Dera Colliery Township, 29 March: 82.4 µg/m³, 2.1× its usual 39.3 Dera Colliery Township, 30 March: 40.2 µg/m³ Dera Colliery Township, 31 March: 47.3 µg/m³ Dera Colliery Township, 1 April: 46.5 µg/m³ Dera Colliery Township, 2 April: 41.8 µg/m³ Dera Colliery Township, 3 April: 51.7 µg/m³ Dera Colliery Township, 4 April: 65.5 µg/m³ Dera Colliery Township, 5 April: 84.4 µg/m³, 2.3× its usual 37.0 Dera Colliery Township, 6 April: 60.7 µg/m³ Dera Colliery Township, 7 April: 34.2 µg/m³ Dera Colliery Township, 8 April: 20.5 µg/m³ Dera Colliery Township, 9 April: no reading Keonjhargarh Keonjhargarh, 20 March: 69.1 µg/m³ Keonjhargarh, 21 March: 36.7 µg/m³ Keonjhargarh, 22 March: 17.1 µg/m³ Keonjhargarh, 23 March: 29.6 µg/m³ Keonjhargarh, 24 March: 37.0 µg/m³ Keonjhargarh, 25 March: 52.6 µg/m³ Keonjhargarh, 26 March: 52.0 µg/m³ Keonjhargarh, 27 March: 60.6 µg/m³ Keonjhargarh, 28 March: 54.2 µg/m³ Keonjhargarh, 29 March: 77.6 µg/m³, 2.1× its usual 37.8 Keonjhargarh, 30 March: 73.8 µg/m³, 2.0× its usual 36.7 Keonjhargarh, 31 March: 37.2 µg/m³ Keonjhargarh, 1 April: no reading Keonjhargarh, 2 April: no reading Keonjhargarh, 3 April: no reading Keonjhargarh, 4 April: 9.5 µg/m³ Keonjhargarh, 5 April: 47.4 µg/m³ Keonjhargarh, 6 April: 46.1 µg/m³ Keonjhargarh, 7 April: 35.5 µg/m³ Keonjhargarh, 8 April: 28.5 µg/m³ Keonjhargarh, 9 April: no reading Baripāda Baripāda, 20 March: 36.8 µg/m³ Baripāda, 21 March: 39.5 µg/m³ Baripāda, 22 March: 12.4 µg/m³ Baripāda, 23 March: 19.7 µg/m³ Baripāda, 24 March: 25.1 µg/m³ Baripāda, 25 March: 35.4 µg/m³ Baripāda, 26 March: 45.1 µg/m³ Baripāda, 27 March: 43.3 µg/m³ Baripāda, 28 March: 43.9 µg/m³ Baripāda, 29 March: 64.1 µg/m³ Baripāda, 30 March: 80.4 µg/m³, 2.2× its usual 36.6 Baripāda, 31 March: 52.8 µg/m³ Baripāda, 1 April: 51.4 µg/m³ Baripāda, 2 April: no reading Baripāda, 3 April: 40.8 µg/m³ Baripāda, 4 April: 46.6 µg/m³ Baripāda, 5 April: 56.4 µg/m³ Baripāda, 6 April: 45.5 µg/m³ Baripāda, 7 April: 17.2 µg/m³ Baripāda, 8 April: 8.4 µg/m³ Baripāda, 9 April: no reading Jabalpur Jabalpur, 20 March: 21.6 µg/m³ Jabalpur, 21 March: 25.0 µg/m³ Jabalpur, 22 March: 23.2 µg/m³ Jabalpur, 23 March: 21.4 µg/m³ Jabalpur, 24 March: 23.1 µg/m³ Jabalpur, 25 March: 25.4 µg/m³ Jabalpur, 26 March: 31.7 µg/m³ Jabalpur, 27 March: 40.4 µg/m³ Jabalpur, 28 March: 40.5 µg/m³ Jabalpur, 29 March: 30.5 µg/m³ Jabalpur, 30 March: 36.4 µg/m³ Jabalpur, 31 March: 41.8 µg/m³ Jabalpur, 1 April: 68.7 µg/m³ Jabalpur, 2 April: 57.5 µg/m³, 2.1× its usual 28.0 Jabalpur, 3 April: 43.7 µg/m³ Jabalpur, 4 April: 33.9 µg/m³ Jabalpur, 5 April: 38.8 µg/m³ Jabalpur, 6 April: 33.9 µg/m³ Jabalpur, 7 April: 40.0 µg/m³ Jabalpur, 8 April: 41.3 µg/m³ Jabalpur, 9 April: no reading Maihar Maihar, 20 March: 14.9 µg/m³ Maihar, 21 March: 14.1 µg/m³ Maihar, 22 March: 11.0 µg/m³ Maihar, 23 March: 15.0 µg/m³ Maihar, 24 March: 14.5 µg/m³ Maihar, 25 March: 15.8 µg/m³ Maihar, 26 March: 13.5 µg/m³ Maihar, 27 March: 3.9 µg/m³ Maihar, 28 March: 16.9 µg/m³ Maihar, 29 March: 11.2 µg/m³ Maihar, 30 March: 13.8 µg/m³ Maihar, 31 March: 11.3 µg/m³ Maihar, 1 April: 11.4 µg/m³ Maihar, 2 April: 55.1 µg/m³, 4.0× its usual 13.8 Maihar, 3 April: 16.6 µg/m³ Maihar, 4 April: 15.4 µg/m³ Maihar, 5 April: 23.3 µg/m³ Maihar, 6 April: 18.6 µg/m³ Maihar, 7 April: 21.3 µg/m³ Maihar, 8 April: 27.0 µg/m³ Maihar, 9 April: no reading Bihār Sharīf Bihār Sharīf, 20 March: no reading Bihār Sharīf, 21 March: no reading Bihār Sharīf, 22 March: no reading Bihār Sharīf, 23 March: no reading Bihār Sharīf, 24 March: 43.0 µg/m³ Bihār Sharīf, 25 March: 43.5 µg/m³ Bihār Sharīf, 26 March: no reading Bihār Sharīf, 27 March: 34.5 µg/m³ Bihār Sharīf, 28 March: 30.3 µg/m³ Bihār Sharīf, 29 March: no reading Bihār Sharīf, 30 March: no reading Bihār Sharīf, 31 March: no reading Bihār Sharīf, 1 April: no reading Bihār Sharīf, 2 April: no reading Bihār Sharīf, 3 April: 65.9 µg/m³, 2.4× its usual 27.4 Bihār Sharīf, 4 April: 80.6 µg/m³, 2.8× its usual 29.2 Bihār Sharīf, 5 April: no reading Bihār Sharīf, 6 April: no reading Bihār Sharīf, 7 April: no reading Bihār Sharīf, 8 April: no reading Bihār Sharīf, 9 April: no reading Bhelai Bhelai, 20 March: 48.6 µg/m³ Bhelai, 21 March: 36.9 µg/m³ Bhelai, 22 March: 30.9 µg/m³ Bhelai, 23 March: 38.0 µg/m³ Bhelai, 24 March: 41.0 µg/m³ Bhelai, 25 March: 39.0 µg/m³ Bhelai, 26 March: 45.7 µg/m³ Bhelai, 27 March: 53.4 µg/m³ Bhelai, 28 March: 54.1 µg/m³ Bhelai, 29 March: 39.2 µg/m³ Bhelai, 30 March: 42.3 µg/m³ Bhelai, 31 March: 53.7 µg/m³ Bhelai, 1 April: 49.0 µg/m³ Bhelai, 2 April: 48.1 µg/m³ Bhelai, 3 April: 46.9 µg/m³ Bhelai, 4 April: 43.3 µg/m³ Bhelai, 5 April: 83.4 µg/m³ Bhelai, 6 April: 98.0 µg/m³, 2.4× its usual 40.9 Bhelai, 7 April: 95.1 µg/m³ Bhelai, 8 April: 65.5 µg/m³ Bhelai, 9 April: no reading Rājgīr Rājgīr, 20 March: no reading Rājgīr, 21 March: no reading Rājgīr, 22 March: no reading Rājgīr, 23 March: no reading Rājgīr, 24 March: 44.4 µg/m³ Rājgīr, 25 March: 33.6 µg/m³ Rājgīr, 26 March: 29.6 µg/m³ Rājgīr, 27 March: 23.3 µg/m³ Rājgīr, 28 March: 25.3 µg/m³ Rājgīr, 29 March: no reading Rājgīr, 30 March: no reading Rājgīr, 31 March: 22.7 µg/m³ Rājgīr, 1 April: no reading Rājgīr, 2 April: 21.3 µg/m³ Rājgīr, 3 April: 41.0 µg/m³ Rājgīr, 4 April: 56.6 µg/m³ Rājgīr, 5 April: 50.0 µg/m³ Rājgīr, 6 April: 62.1 µg/m³, 2.1× its usual 29.9 Rājgīr, 7 April: no reading Rājgīr, 8 April: 128.0 µg/m³ Rājgīr, 9 April: no reading 20 Mar 23 26 29 1 Apr 4 7 Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more. Good 0–50
Moderate 51–100
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
Rishīkesh Uttarakhand, India 1 23 March 1.2 8.9× Aurangābād Bihar, India 13 27 March 20.5 7.8× Siwān Bihar, India 8 26 March 34.8 4.2× Maihar Madhya Pradesh, India 1 2 April 13.8 4.0× Siliguri West Bengal, India 8 31 March 32.1 3.9× Rourkela Odisha, India 6 28 March 51.0 3.6× Rairangpur Odisha, India 8 30 March 23.8 3.6× Gangtok Sikkim, India 9 4 April 24.0 3.3× Guwahati Assam, India 9 27 March 34.8 3.2× Kohima Nagaland, India 9 28 March 27.1 3.2× Nagaon Assam, India 8 27 March 29.2 3.0× Samāstipur Bihar, India 3 25 March 38.9 2.9× Hanumāngarh Rajasthan, India 2 23 March 26.5 2.9× Bettiah Bihar, India 7 26 March 25.2 2.9× Bihār Sharīf Bihar, India 2 4 April 29.2 2.8× Mothīhāri Bihar, India 2 26 March 44.1 2.7× Rānīganj West Bengal, India 4 26 March 36.2 2.6× Shrīrāmpur West Bengal, India 1 25 March 33.2 2.6× Shillong Meghalaya, India 5 30 March 19.9 2.6× Jhānsi Uttar Pradesh, India 2 25 March 17.9 2.6× Ghāziābād Uttar Pradesh, India 2 25 March 62.1 2.5× Muzaffarnagar Uttar Pradesh, India 2 23 March 53.4 2.5× Purnia Bihar, India 1 28 March 44.4 2.4× Bhelai Chhattisgarh, India 1 6 April 40.9 2.4× Prayagraj Uttar Pradesh, India 1 25 March 25.1 2.4× Loni Uttar Pradesh, India 1 23 March 110.0 2.3× Nalbāri Assam, India 2 27 March 50.5 2.3× Dera Colliery Township Odisha, India 2 5 April 37.0 2.3× Patiāla Punjab, India 1 25 March 29.8 2.3× Mohali Punjab, India 2 24 March 27.2 2.3× Naharlagun Arunachal Pradesh, India 6 28 March 25.9 2.3× Bāghpat Uttar Pradesh, India 1 23 March 53.4 2.2× Durgapur West Bengal, India 1 27 March 40.0 2.2× Baripāda Odisha, India 1 30 March 36.6 2.2× Sasarām Bihar, India 6 27 March 49.1 2.1× Keonjhargarh Odisha, India 2 29 March 37.8 2.1× Munger Bihar, India 2 28 March 31.9 2.1× Sri Ganganagar Rajasthan, India 2 25 March 30.8 2.1× Rājgīr Bihar, India 1 6 April 29.9 2.1× Jabalpur Madhya Pradesh, India 1 2 April 28.0 2.1× Katihar Bihar, India 2 31 March 24.1 2.1× Hājīpur Bihar, India 1 27 March 82.7 2.0× Āsansol West Bengal, India 1 26 March 47.1 2.0× Dehradun Uttarakhand, India 1 25 March 33.2 2.0× Sawai Madhopur Rajasthan, India 1 25 March 26.4 2.0×
Daily means in µg/m³, over the days each city counted in this episode. Highest: its highest of those days. Usual: the city's median for the time of year of that day (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that, with a usual under 5 µg/m³ taken as 5.
Against other episodes in India
Number 5 of 54 episodes in India since our records began, by cities reached.
India and Pakistan, October 2025 170 Western India and Pakistan, September 2026 57 North-western India, 9 to 20 July 2026 51 Northern India and Pakistan, June 2025 48 Northern India, March and April 2025 45 North-western India, November 2025 27 North-western India, 21 to 29 April 2026 26 North-western India and Pakistan, April and May 2025 26 North-western India and Pakistan, March 2026 25 North-western India, 15 to 16 May 2025 23 North-eastern India, July 2026 21 North-eastern India, April 2025 20 Bars: cities reached; colour: the level of the episode's highest daily reading. All 54 .
Use this page SmogRank, Northern India, March and April 2025: 45 cities with PM2.5 at twice their usual or more, 23 March to 6 April 2025, smogrank.com/episodes/2025-03-northern-india (accessed 4 October 2026).
Copy citation Download top 10 (PNG)
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms .
An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes . Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.
