SmogRank / Episodes / India
Maharashtra, India, September 2025
For 5 days, from 10 to 14 September 2025, 13 cities in India had PM2.5 at least twice their usual for the time of year. The worst reading was Virār, Maharashtra, India: 190.0 µg/m³ on 12 September, about 13× its usual 14.2.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 13 in 1 country
Days 5 10 to 14 September 2025
Worst day 13 September 7 cities counted
Furthest above usual 13× Virār
Day by day
Play 13 September 7 cities at twice their usual or more
Malegaon Vapi Surat Ankleshwar Jalgaon Wadgaon Kolhati Boisar Bhiwandi Kalyān Bhayandar Mumbai Pimpri-Chinchwad Pune Pithampur Indore Ahmedabad Ratlām Gandhinagar Mahād Dewas Akola Dūngarpur Parbhani Pratāpgarh Latur Nanded Amravati Sholapur Udaipur Chittorgarh Bhopal Mandideep Kolhāpur Rājsamand Jhālāwār Vijayapura Kalaburagi Bhilwara Kota Jalor Būndi Bārān Yadgir Sangāreddi Amīnpur Serilingampalle Dhule Nashik Sāngli Panvel Sirohi Kharghar Bānswāra Thāne Badlapur Ahilyanagar Undera Aurangabad Virār 7 Sep 8 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
Badlapur Badlapur, 7 September: 30.3 µg/m³, 2.0× usual Badlapur, 8 September: 30.2 µg/m³, 2.0× usual Badlapur, 9 September: 25.3 µg/m³, 1.7× usual Badlapur, 10 September: 33.1 µg/m³, 2.2× usual Badlapur, 11 September: 35.0 µg/m³, 2.4× usual Badlapur, 12 September: 22.9 µg/m³, 1.5× usual Badlapur, 13 September: 32.7 µg/m³, 2.2× usual Badlapur, 14 September: 20.6 µg/m³, 1.4× usual Badlapur, 15 September: 27.4 µg/m³, 1.9× usual Badlapur, 16 September: 26.1 µg/m³, 1.8× usual Badlapur, 17 September: 21.2 µg/m³, 1.4× usual Nashik Nashik, 7 September: 10.6 µg/m³, 0.7× usual Nashik, 8 September: 24.2 µg/m³, 1.5× usual Nashik, 9 September: 31.0 µg/m³, 1.9× usual Nashik, 10 September: 28.7 µg/m³, 1.8× usual Nashik, 11 September: 27.0 µg/m³, 1.7× usual Nashik, 12 September: 24.7 µg/m³, 1.5× usual Nashik, 13 September: 25.5 µg/m³, 1.6× usual Nashik, 14 September: 32.1 µg/m³, 2.0× usual Nashik, 15 September: 25.5 µg/m³, 1.6× usual Nashik, 16 September: 17.6 µg/m³, 1.1× usual Nashik, 17 September: 12.9 µg/m³, 0.8× usual Panvel Panvel, 7 September: 20.5 µg/m³, 1.1× usual Panvel, 8 September: no reading Panvel, 9 September: 32.0 µg/m³, 1.7× usual Panvel, 10 September: 41.4 µg/m³, 2.2× usual Panvel, 11 September: 40.7 µg/m³, 2.2× usual Panvel, 12 September: 37.8 µg/m³, 2.0× usual Panvel, 13 September: 33.2 µg/m³, 1.8× usual Panvel, 14 September: 36.1 µg/m³, 1.9× usual Panvel, 15 September: 20.2 µg/m³, 1.1× usual Panvel, 16 September: 30.0 µg/m³, 1.6× usual Panvel, 17 September: 25.5 µg/m³, 1.3× usual Thāne Thāne, 7 September: 18.7 µg/m³, 1.0× usual Thāne, 8 September: 18.9 µg/m³, 1.0× usual Thāne, 9 September: 34.3 µg/m³, 1.8× usual Thāne, 10 September: 40.2 µg/m³, 2.1× usual Thāne, 11 September: 43.0 µg/m³, 2.3× usual Thāne, 12 September: 27.3 µg/m³, 1.4× usual Thāne, 13 September: 15.8 µg/m³, 0.8× usual Thāne, 14 September: 16.9 µg/m³, 0.9× usual Thāne, 15 September: 9.8 µg/m³, 0.5× usual Thāne, 16 September: 10.6 µg/m³, 0.6× usual Thāne, 17 September: 14.8 µg/m³, 0.8× usual Sirohi Sirohi, 7 September: 4.9 µg/m³, 0.3× usual Sirohi, 8 September: 18.6 µg/m³, 1.1× usual Sirohi, 9 September: 32.9 µg/m³, 2.0× usual Sirohi, 10 September: 39.9 µg/m³, 2.4× usual Sirohi, 11 September: 32.9 µg/m³, 2.0× usual Sirohi, 12 September: 28.6 µg/m³, 1.7× usual Sirohi, 13 September: 30.3 µg/m³, 1.8× usual Sirohi, 14 September: 38.6 µg/m³, 2.3× usual Sirohi, 15 September: 26.9 µg/m³, 1.6× usual Sirohi, 16 September: 22.9 µg/m³, 1.4× usual Sirohi, 17 September: 34.4 µg/m³, 2.1× usual Ahilyanagar Ahilyanagar, 7 September: no reading Ahilyanagar, 8 September: no reading Ahilyanagar, 9 September: no reading Ahilyanagar, 10 September: 27.5 µg/m³, 2.6× usual Ahilyanagar, 11 September: no reading Ahilyanagar, 12 September: no reading Ahilyanagar, 13 September: no reading Ahilyanagar, 14 September: no reading Ahilyanagar, 15 September: no reading Ahilyanagar, 16 September: no reading Ahilyanagar, 17 September: no reading Undera Undera, 7 September: no reading Undera, 8 September: no reading Undera, 9 September: 29.0 µg/m³, 0.9× usual Undera, 10 September: no reading Undera, 11 September: 75.5 µg/m³, 2.3× usual Undera, 12 September: 90.2 µg/m³, 2.7× usual Undera, 13 September: 78.7 µg/m³, 2.4× usual Undera, 14 September: 69.8 µg/m³, 2.1× usual Undera, 15 September: 62.2 µg/m³, 1.9× usual Undera, 16 September: 64.2 µg/m³, 2.0× usual Undera, 17 September: 82.5 µg/m³, 2.5× usual Bānswāra Bānswāra, 7 September: 18.4 µg/m³, 1.1× usual Bānswāra, 8 September: 24.1 µg/m³, 1.4× usual Bānswāra, 9 September: 27.7 µg/m³, 1.6× usual Bānswāra, 10 September: 29.8 µg/m³, 1.8× usual Bānswāra, 11 September: 35.4 µg/m³, 2.1× usual Bānswāra, 12 September: 37.1 µg/m³, 2.2× usual Bānswāra, 13 September: 39.4 µg/m³, 2.3× usual Bānswāra, 14 September: no reading Bānswāra, 15 September: 35.5 µg/m³, 2.1× usual Bānswāra, 16 September: 34.9 µg/m³, 2.1× usual Bānswāra, 17 September: 40.0 µg/m³, 2.4× usual Sāngli Sāngli, 7 September: 12.4 µg/m³, 0.7× usual Sāngli, 8 September: 12.6 µg/m³, 0.7× usual Sāngli, 9 September: 10.9 µg/m³, 0.6× usual Sāngli, 10 September: 23.5 µg/m³, 1.4× usual Sāngli, 11 September: 34.8 µg/m³, 2.0× usual Sāngli, 12 September: 35.1 µg/m³, 2.1× usual Sāngli, 13 September: 36.9 µg/m³, 2.2× usual Sāngli, 14 September: 28.2 µg/m³, 1.7× usual Sāngli, 15 September: 15.0 µg/m³, 0.9× usual Sāngli, 16 September: 16.6 µg/m³, 1.0× usual Sāngli, 17 September: 18.7 µg/m³, 1.1× usual Virār Virār, 7 September: 12.2 µg/m³, 0.9× usual Virār, 8 September: 17.3 µg/m³, 1.2× usual Virār, 9 September: 20.7 µg/m³, 1.5× usual Virār, 10 September: 24.7 µg/m³, 1.7× usual Virār, 11 September: 24.0 µg/m³, 1.7× usual Virār, 12 September: 190.0 µg/m³, 13× usual Virār, 13 September: 40.3 µg/m³, 2.8× usual Virār, 14 September: 59.7 µg/m³, 4.2× usual Virār, 15 September: 40.9 µg/m³, 2.9× usual Virār, 16 September: 62.2 µg/m³, 4.4× usual Virār, 17 September: 44.7 µg/m³, 3.1× usual Aurangabad Aurangabad, 7 September: 11.5 µg/m³, 0.5× usual Aurangabad, 8 September: 18.0 µg/m³, 0.8× usual Aurangabad, 9 September: 21.2 µg/m³, 0.9× usual Aurangabad, 10 September: 24.7 µg/m³, 1.1× usual Aurangabad, 11 September: 28.7 µg/m³, 1.2× usual Aurangabad, 12 September: 29.8 µg/m³, 1.3× usual Aurangabad, 13 September: 65.9 µg/m³, 2.9× usual Aurangabad, 14 September: 77.5 µg/m³, 3.4× usual Aurangabad, 15 September: 42.8 µg/m³, 1.9× usual Aurangabad, 16 September: 32.0 µg/m³, 1.4× usual Aurangabad, 17 September: 27.1 µg/m³, 1.2× usual Kharghar Kharghar, 7 September: 9.6 µg/m³, 0.4× usual Kharghar, 8 September: no reading Kharghar, 9 September: 31.5 µg/m³, 1.5× usual Kharghar, 10 September: 32.1 µg/m³, 1.5× usual Kharghar, 11 September: 32.1 µg/m³, 1.5× usual Kharghar, 12 September: 35.9 µg/m³, 1.7× usual Kharghar, 13 September: 49.6 µg/m³, 2.3× usual Kharghar, 14 September: 38.5 µg/m³, 1.8× usual Kharghar, 15 September: 20.7 µg/m³, 1.0× usual Kharghar, 16 September: 38.4 µg/m³, 1.8× usual Kharghar, 17 September: 34.2 µg/m³, 1.6× usual Dhule Dhule, 7 September: 15.4 µg/m³, 0.8× usual Dhule, 8 September: 23.3 µg/m³, 1.2× usual Dhule, 9 September: 17.3 µg/m³, 0.9× usual Dhule, 10 September: 20.4 µg/m³, 1.1× usual Dhule, 11 September: 19.9 µg/m³, 1.1× usual Dhule, 12 September: 26.7 µg/m³, 1.4× usual Dhule, 13 September: 31.9 µg/m³, 1.7× usual Dhule, 14 September: 38.3 µg/m³, 2.0× usual Dhule, 15 September: 32.7 µg/m³, 1.7× usual Dhule, 16 September: no reading Dhule, 17 September: no reading 7 Sep 9 11 13 15 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
Virār Maharashtra, India 3 12 September 14.2 13× Aurangabad Maharashtra, India 2 14 September 23.0 3.4× Undera Gujarat, India 3 12 September 32.9 2.7× Ahilyanagar Maharashtra, India 1 10 September 10.5 2.6× Sirohi Rajasthan, India 1 10 September 16.7 2.4× Badlapur Maharashtra, India 3 11 September 14.8 2.4× Bānswāra Rajasthan, India 2 17 September 17.0 2.4× Kharghar Maharashtra, India 1 13 September 21.5 2.3× Thāne Maharashtra, India 2 11 September 18.9 2.3× Panvel Maharashtra, India 2 10 September 18.9 2.2× Sāngli Maharashtra, India 3 13 September 17.0 2.2× Dhule Maharashtra, India 1 14 September 18.8 2.0× Nashik Maharashtra, India 2 14 September 16.1 2.0×
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 23 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 Maharashtra, India, September 2025 13 Bars: cities reached; colour: the level of the episode's highest daily reading. All 54 .
Use this page SmogRank, Maharashtra, India, September 2025: 13 cities with PM2.5 at twice their usual or more, 10 to 14 September 2025, smogrank.com/episodes/2025-09-maharashtra-india (accessed 3 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.
