SmogRank / Episodes / India
North-eastern India, July 2026
For 4 days, from 11 to 14 July 2026, 22 cities in India had PM2.5 at least twice their usual for the time of year. The worst reading was Guwahati, Assam, India: 214.9 µg/m³ on 13 July, about 13× its usual 16.1.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 22 in 1 country
Days 4 11 to 14 July 2026
Worst day 12 July 16 cities counted
Furthest above usual 13× Guwahati
Day by day
Play 12 July 16 cities at twice their usual or more
Jharia Āsansol Rānīganj Durgapur Barbil Rourkela Gaya Bihār Sharīf Byasanagar Katihar Saharsa Samāstipur Patna Angul Hājīpur Arāria Sasarām Muzaffarpur Chāpra Kishanganj Buxar Mothīhāri Dhaka Singrauli Bhelai Prayagraj Raipur Durg Nalbāri Satna Maihar Bilāspur Varanasi Joda Begusarai Keonjhargarh Agartala Rairangpur Rājgīr Purnia Belpahar Dera Colliery Township Baripāda Shrīrāmpur Bhubaneswar Haldia Munger Kolkata Bhilai Cuttack Bhāgalpur Arrah Guwahati 8 Jul 9 10 11 12 13 14 15 16 17 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
Arrah Arrah, 8 July: 184.0 µg/m³, 8.1× usual Arrah, 9 July: no reading Arrah, 10 July: no reading Arrah, 11 July: no reading Arrah, 12 July: 149.0 µg/m³, 6.5× usual Arrah, 13 July: 92.4 µg/m³, 4.1× usual Arrah, 14 July: no reading Arrah, 15 July: 24.3 µg/m³, 1.1× usual Arrah, 16 July: no reading Arrah, 17 July: no reading Belpahar Belpahar, 8 July: 43.7 µg/m³, 3.3× usual Belpahar, 9 July: 14.9 µg/m³, 1.1× usual Belpahar, 10 July: 19.2 µg/m³, 1.5× usual Belpahar, 11 July: 27.3 µg/m³, 2.1× usual Belpahar, 12 July: 29.5 µg/m³, 2.3× usual Belpahar, 13 July: 28.4 µg/m³, 2.2× usual Belpahar, 14 July: 24.3 µg/m³, 1.9× usual Belpahar, 15 July: 15.2 µg/m³, 1.2× usual Belpahar, 16 July: 14.9 µg/m³, 1.1× usual Belpahar, 17 July: 21.6 µg/m³, 1.6× usual Purnia Purnia, 8 July: 36.6 µg/m³, 2.3× usual Purnia, 9 July: 34.8 µg/m³, 2.2× usual Purnia, 10 July: 37.2 µg/m³, 2.3× usual Purnia, 11 July: 32.0 µg/m³, 2.0× usual Purnia, 12 July: 36.5 µg/m³, 2.3× usual Purnia, 13 July: no reading Purnia, 14 July: 34.8 µg/m³, 2.2× usual Purnia, 15 July: 34.7 µg/m³, 2.2× usual Purnia, 16 July: 33.8 µg/m³, 2.1× usual Purnia, 17 July: 25.6 µg/m³, 1.6× usual Bhilai Bhilai, 8 July: 36.1 µg/m³, 3.7× usual Bhilai, 9 July: 23.3 µg/m³, 2.4× usual Bhilai, 10 July: 24.2 µg/m³, 2.5× usual Bhilai, 11 July: 26.6 µg/m³, 2.7× usual Bhilai, 12 July: 21.3 µg/m³, 2.2× usual Bhilai, 13 July: 23.5 µg/m³, 2.4× usual Bhilai, 14 July: 29.3 µg/m³, 3.0× usual Bhilai, 15 July: 21.8 µg/m³, 2.2× usual Bhilai, 16 July: 23.0 µg/m³, 2.4× usual Bhilai, 17 July: 13.6 µg/m³, 1.4× usual Cuttack Cuttack, 8 July: 32.9 µg/m³, 2.5× usual Cuttack, 9 July: 30.5 µg/m³, 2.3× usual Cuttack, 10 July: 23.9 µg/m³, 1.8× usual Cuttack, 11 July: 32.0 µg/m³, 2.4× usual Cuttack, 12 July: 36.7 µg/m³, 2.8× usual Cuttack, 13 July: 40.0 µg/m³, 3.0× usual Cuttack, 14 July: no reading Cuttack, 15 July: 37.2 µg/m³, 2.8× usual Cuttack, 16 July: no reading Cuttack, 17 July: 13.6 µg/m³, 1.0× usual Guwahati Guwahati, 8 July: 16.0 µg/m³, 1.0× usual Guwahati, 9 July: 11.1 µg/m³, 0.7× usual Guwahati, 10 July: 131.4 µg/m³, 8.2× usual Guwahati, 11 July: 21.8 µg/m³, 1.4× usual Guwahati, 12 July: 141.3 µg/m³, 8.8× usual Guwahati, 13 July: 214.9 µg/m³, 13× usual Guwahati, 14 July: 15.3 µg/m³, 1.0× usual Guwahati, 15 July: 9.1 µg/m³, 0.6× usual Guwahati, 16 July: 19.0 µg/m³, 1.2× usual Guwahati, 17 July: 18.5 µg/m³, 1.1× usual Rājgīr Rājgīr, 8 July: 32.4 µg/m³, 1.1× usual Rājgīr, 9 July: 40.6 µg/m³, 1.4× usual Rājgīr, 10 July: 31.0 µg/m³, 1.0× usual Rājgīr, 11 July: 134.0 µg/m³, 4.5× usual Rājgīr, 12 July: 66.2 µg/m³, 2.2× usual Rājgīr, 13 July: 33.9 µg/m³, 1.1× usual Rājgīr, 14 July: 29.2 µg/m³, 1.0× usual Rājgīr, 15 July: 29.6 µg/m³, 1.0× usual Rājgīr, 16 July: 38.3 µg/m³, 1.3× usual Rājgīr, 17 July: 81.2 µg/m³, 2.7× usual Agartala Agartala, 8 July: no reading Agartala, 9 July: no reading Agartala, 10 July: 27.0 µg/m³, 1.8× usual Agartala, 11 July: 36.6 µg/m³, 2.4× usual Agartala, 12 July: 32.8 µg/m³, 2.2× usual Agartala, 13 July: 33.2 µg/m³, 2.2× usual Agartala, 14 July: no reading Agartala, 15 July: 32.0 µg/m³, 2.1× usual Agartala, 16 July: 33.6 µg/m³, 2.2× usual Agartala, 17 July: 35.2 µg/m³, 2.3× usual Haldia Haldia, 8 July: 16.6 µg/m³, 1.2× usual Haldia, 9 July: 16.1 µg/m³, 1.2× usual Haldia, 10 July: 21.7 µg/m³, 1.6× usual Haldia, 11 July: 29.6 µg/m³, 2.2× usual Haldia, 12 July: 35.8 µg/m³, 2.6× usual Haldia, 13 July: 25.5 µg/m³, 1.9× usual Haldia, 14 July: 22.5 µg/m³, 1.7× usual Haldia, 15 July: 11.7 µg/m³, 0.9× usual Haldia, 16 July: 13.9 µg/m³, 1.0× usual Haldia, 17 July: 14.4 µg/m³, 1.1× usual Keonjhargarh Keonjhargarh, 8 July: 16.0 µg/m³, 1.3× usual Keonjhargarh, 9 July: 19.0 µg/m³, 1.5× usual Keonjhargarh, 10 July: 14.5 µg/m³, 1.1× usual Keonjhargarh, 11 July: 26.0 µg/m³, 2.0× usual Keonjhargarh, 12 July: 25.8 µg/m³, 2.0× usual Keonjhargarh, 13 July: 26.8 µg/m³, 2.1× usual Keonjhargarh, 14 July: 27.4 µg/m³, 2.1× usual Keonjhargarh, 15 July: 22.2 µg/m³, 1.7× usual Keonjhargarh, 16 July: 15.9 µg/m³, 1.2× usual Keonjhargarh, 17 July: 13.4 µg/m³, 1.0× usual Bilāspur Bilāspur, 8 July: no reading Bilāspur, 9 July: no reading Bilāspur, 10 July: no reading Bilāspur, 11 July: 25.5 µg/m³, 2.0× usual Bilāspur, 12 July: no reading Bilāspur, 13 July: no reading Bilāspur, 14 July: 28.3 µg/m³, 2.2× usual Bilāspur, 15 July: 21.6 µg/m³, 1.7× usual Bilāspur, 16 July: 24.8 µg/m³, 1.9× usual Bilāspur, 17 July: no reading Joda Joda, 8 July: 24.7 µg/m³, 1.0× usual Joda, 9 July: 27.5 µg/m³, 1.1× usual Joda, 10 July: 44.5 µg/m³, 1.8× usual Joda, 11 July: 48.2 µg/m³, 1.9× usual Joda, 12 July: 52.1 µg/m³, 2.1× usual Joda, 13 July: 52.0 µg/m³, 2.1× usual Joda, 14 July: 53.3 µg/m³, 2.1× usual Joda, 15 July: 46.0 µg/m³, 1.8× usual Joda, 16 July: 35.3 µg/m³, 1.4× usual Joda, 17 July: 41.4 µg/m³, 1.7× usual Shrīrāmpur Shrīrāmpur, 8 July: 25.5 µg/m³, 1.4× usual Shrīrāmpur, 9 July: 21.5 µg/m³, 1.2× usual Shrīrāmpur, 10 July: 24.3 µg/m³, 1.3× usual Shrīrāmpur, 11 July: 33.2 µg/m³, 1.8× usual Shrīrāmpur, 12 July: 45.9 µg/m³, 2.5× usual Shrīrāmpur, 13 July: 35.0 µg/m³, 1.9× usual Shrīrāmpur, 14 July: 26.3 µg/m³, 1.4× usual Shrīrāmpur, 15 July: 20.8 µg/m³, 1.1× usual Shrīrāmpur, 16 July: 16.6 µg/m³, 0.9× usual Shrīrāmpur, 17 July: 26.3 µg/m³, 1.4× usual Kolkata Kolkata, 8 July: 27.6 µg/m³, 1.6× usual Kolkata, 9 July: 24.1 µg/m³, 1.4× usual Kolkata, 10 July: 22.9 µg/m³, 1.4× usual Kolkata, 11 July: 31.2 µg/m³, 1.8× usual Kolkata, 12 July: 45.0 µg/m³, 2.7× usual Kolkata, 13 July: 38.0 µg/m³, 2.2× usual Kolkata, 14 July: 24.8 µg/m³, 1.5× usual Kolkata, 15 July: 20.4 µg/m³, 1.2× usual Kolkata, 16 July: 13.8 µg/m³, 0.8× usual Kolkata, 17 July: 22.0 µg/m³, 1.3× usual Baripāda Baripāda, 8 July: 25.0 µg/m³, 1.4× usual Baripāda, 9 July: 22.7 µg/m³, 1.3× usual Baripāda, 10 July: no reading Baripāda, 11 July: 25.8 µg/m³, 1.5× usual Baripāda, 12 July: 43.3 µg/m³, 2.5× usual Baripāda, 13 July: no reading Baripāda, 14 July: no reading Baripāda, 15 July: 19.0 µg/m³, 1.1× usual Baripāda, 16 July: 3.6 µg/m³, 0.2× usual Baripāda, 17 July: 7.1 µg/m³, 0.4× usual Begusarai Begusarai, 8 July: 30.3 µg/m³, 1.6× usual Begusarai, 9 July: 26.5 µg/m³, 1.4× usual Begusarai, 10 July: 26.2 µg/m³, 1.4× usual Begusarai, 11 July: 22.7 µg/m³, 1.2× usual Begusarai, 12 July: 40.6 µg/m³, 2.1× usual Begusarai, 13 July: 26.6 µg/m³, 1.4× usual Begusarai, 14 July: 29.9 µg/m³, 1.5× usual Begusarai, 15 July: 27.8 µg/m³, 1.4× usual Begusarai, 16 July: 12.2 µg/m³, 0.6× usual Begusarai, 17 July: 18.3 µg/m³, 0.9× usual Rairangpur Rairangpur, 8 July: 11.1 µg/m³, 0.6× usual Rairangpur, 9 July: 8.4 µg/m³, 0.5× usual Rairangpur, 10 July: 17.1 µg/m³, 1.0× usual Rairangpur, 11 July: 25.9 µg/m³, 1.5× usual Rairangpur, 12 July: 38.9 µg/m³, 2.2× usual Rairangpur, 13 July: 36.9 µg/m³, 2.1× usual Rairangpur, 14 July: 18.4 µg/m³, 1.1× usual Rairangpur, 15 July: 13.9 µg/m³, 0.8× usual Rairangpur, 16 July: 10.9 µg/m³, 0.6× usual Rairangpur, 17 July: 10.5 µg/m³, 0.6× usual Bhubaneswar Bhubaneswar, 8 July: 17.5 µg/m³, 1.3× usual Bhubaneswar, 9 July: 16.3 µg/m³, 1.2× usual Bhubaneswar, 10 July: 15.1 µg/m³, 1.1× usual Bhubaneswar, 11 July: 22.6 µg/m³, 1.7× usual Bhubaneswar, 12 July: 32.2 µg/m³, 2.4× usual Bhubaneswar, 13 July: 35.4 µg/m³, 2.6× usual Bhubaneswar, 14 July: 18.2 µg/m³, 1.3× usual Bhubaneswar, 15 July: 27.7 µg/m³, 2.1× usual Bhubaneswar, 16 July: 34.3 µg/m³, 2.5× usual Bhubaneswar, 17 July: 18.8 µg/m³, 1.4× usual Dera Colliery Towns… Dera Colliery Township, 8 July: no reading Dera Colliery Township, 9 July: no reading Dera Colliery Township, 10 July: no reading Dera Colliery Township, 11 July: no reading Dera Colliery Township, 12 July: no reading Dera Colliery Township, 13 July: 63.0 µg/m³, 2.5× usual Dera Colliery Township, 14 July: no reading Dera Colliery Township, 15 July: no reading Dera Colliery Township, 16 July: no reading Dera Colliery Township, 17 July: no reading Munger Munger, 8 July: 33.4 µg/m³, 2.0× usual Munger, 9 July: 29.0 µg/m³, 1.7× usual Munger, 10 July: no reading Munger, 11 July: no reading Munger, 12 July: no reading Munger, 13 July: 46.0 µg/m³, 2.7× usual Munger, 14 July: 37.7 µg/m³, 2.2× usual Munger, 15 July: 31.5 µg/m³, 1.9× usual Munger, 16 July: 18.4 µg/m³, 1.1× usual Munger, 17 July: 21.2 µg/m³, 1.2× usual Bhāgalpur Bhāgalpur, 8 July: 22.0 µg/m³, 1.0× usual Bhāgalpur, 9 July: 23.7 µg/m³, 1.1× usual Bhāgalpur, 10 July: 23.4 µg/m³, 1.1× usual Bhāgalpur, 11 July: 23.3 µg/m³, 1.1× usual Bhāgalpur, 12 July: 37.8 µg/m³, 1.8× usual Bhāgalpur, 13 July: 21.4 µg/m³, 1.0× usual Bhāgalpur, 14 July: 70.3 µg/m³, 3.3× usual Bhāgalpur, 15 July: 22.1 µg/m³, 1.0× usual Bhāgalpur, 16 July: 20.7 µg/m³, 1.0× usual Bhāgalpur, 17 July: 17.4 µg/m³, 0.8× usual Varanasi Varanasi, 8 July: 21.2 µg/m³, 1.5× usual Varanasi, 9 July: 9.3 µg/m³, 0.7× usual Varanasi, 10 July: 11.6 µg/m³, 0.8× usual Varanasi, 11 July: 25.2 µg/m³, 1.8× usual Varanasi, 12 July: 15.5 µg/m³, 1.1× usual Varanasi, 13 July: 18.0 µg/m³, 1.3× usual Varanasi, 14 July: 30.1 µg/m³, 2.1× usual Varanasi, 15 July: 24.3 µg/m³, 1.7× usual Varanasi, 16 July: 20.8 µg/m³, 1.5× usual Varanasi, 17 July: 16.5 µg/m³, 1.2× usual 8 Jul 9 10 11 12 13 14 15 16 17 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
Guwahati Assam, India 2 13 July 16.1 13× Arrah Bihar, India 2 8 July 22.8 8.1× Rājgīr Bihar, India 1 11 July 29.9 4.5× Bhilai Chhattisgarh, India 1 8 July 9.7 3.7× Belpahar Odisha, India 3 8 July 13.1 3.3× Bhāgalpur Bihar, India 1 14 July 21.4 3.3× Cuttack Odisha, India 3 13 July 13.2 3.0× Munger Bihar, India 2 13 July 17.0 2.7× Kolkata West Bengal, India 2 12 July 16.9 2.7× Haldia West Bengal, India 2 12 July 13.6 2.6× Bhubaneswar Odisha, India 2 13 July 13.5 2.6× Dera Colliery Township Odisha, India 1 13 July 24.8 2.5× Shrīrāmpur West Bengal, India 1 12 July 18.2 2.5× Baripāda Odisha, India 1 12 July 17.5 2.5× Agartala Tripura, India 2 11 July 15.0 2.4× Purnia Bihar, India 2 10 July 16.1 2.3× Rairangpur Odisha, India 2 12 July 17.4 2.2× Bilāspur Chhattisgarh, India 1 14 July 12.8 2.2× Keonjhargarh Odisha, India 3 14 July 12.8 2.1× Joda Odisha, India 2 14 July 24.9 2.1× Varanasi Uttar Pradesh, India 1 14 July 14.1 2.1× Begusarai Bihar, India 1 12 July 19.4 2.1×
Daily means in µg/m³. Usual: the city's median for this time of year (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that.
Against other episodes in India
Number 11 of 54 episodes in India since our records began, by cities reached.
North-western India, October 2025 170 North-western India, September 2026 57 North-western India, July 2026 51 North-western India, June 2025 47 North-eastern India, March and April 2025 45 North-western India, November 2025 27 North-western India, April 2026 26 North-western India, April and May 2025 26 North-western India and Pakistan, March 2026 25 North-western India, May 2025 23 North-eastern India, July 2026 22 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, North-eastern India, July 2026: 22 cities with PM2.5 at twice their usual or more, 11 to 14 July 2026, smogrank.com/episodes/2026-07-north-eastern-india (accessed 2 October 2026).
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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.
