SmogRank / Episodes / India
South-western India, November 2025
For 4 days, from 11 to 14 November 2025, 13 cities in India had PM2.5 at least twice their usual for the time of year. The worst reading was Ooty, Tamil Nadu, India: 475.0 µg/m³ on 11 November, about 21× its usual 22.6.
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 4 11 to 14 November 2025
Worst day 14 November 10 cities counted
Furthest above usual 21× Ooty
Day by day
Play 14 November 10 cities at twice their usual or more
Kadapa Tirupati Chittoor Gummidipundi Vellore Anantapur Kanchipuram Chennai Tambaram Gūduvāncheri Tumkūr Vijayawada Cuddalore Salem Koppal Hyderabad Yadgir Ariyalūr Quthbullapur Serilingampalle Amīnpur Patancheru Sangāreddi Shivamogga Tiruchirappalli Gadag-Betageri Nagapattinam Kalaburagi Rajamahendravaram Gudalur Bagalkot Madikeri Hubballi Vijayapura Kannur Sholapur Thrissur Belagavi Sāngli Kolhāpur Rasapūdipalem Coimbatore Bengaluru Karur Amaravati Tiruppur Puducherry Chikmagalūr Perundurai Mangaluru Neelankarai Tirumala Ooty 8 Nov 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
Rasapūdipalem Rasapūdipalem, 8 November: 72.2 µg/m³, 1.5× usual Rasapūdipalem, 9 November: 71.5 µg/m³, 1.5× usual Rasapūdipalem, 10 November: no reading Rasapūdipalem, 11 November: 86.7 µg/m³, 1.8× usual Rasapūdipalem, 12 November: no reading Rasapūdipalem, 13 November: 82.1 µg/m³, 1.7× usual Rasapūdipalem, 14 November: 99.8 µg/m³, 2.0× usual Rasapūdipalem, 15 November: 95.6 µg/m³, 2.0× usual Rasapūdipalem, 16 November: 84.6 µg/m³, 1.7× usual Rasapūdipalem, 17 November: 72.2 µg/m³, 1.5× usual Coimbatore Coimbatore, 8 November: 62.4 µg/m³, 1.8× usual Coimbatore, 9 November: 53.5 µg/m³, 1.6× usual Coimbatore, 10 November: no reading Coimbatore, 11 November: 71.6 µg/m³, 2.1× usual Coimbatore, 12 November: 71.1 µg/m³, 2.1× usual Coimbatore, 13 November: 52.6 µg/m³, 1.5× usual Coimbatore, 14 November: 76.8 µg/m³, 2.2× usual Coimbatore, 15 November: 66.9 µg/m³, 1.9× usual Coimbatore, 16 November: 61.7 µg/m³, 1.8× usual Coimbatore, 17 November: 60.9 µg/m³, 1.8× usual Amaravati Amaravati, 8 November: 56.6 µg/m³, 1.8× usual Amaravati, 9 November: 50.4 µg/m³, 1.6× usual Amaravati, 10 November: no reading Amaravati, 11 November: 58.4 µg/m³, 1.9× usual Amaravati, 12 November: 60.4 µg/m³, 2.0× usual Amaravati, 13 November: 67.6 µg/m³, 2.2× usual Amaravati, 14 November: 69.9 µg/m³, 2.3× usual Amaravati, 15 November: 79.8 µg/m³, 2.6× usual Amaravati, 16 November: 66.8 µg/m³, 2.2× usual Amaravati, 17 November: 62.4 µg/m³, 2.0× usual Puducherry Puducherry, 8 November: 48.9 µg/m³, 2.4× usual Puducherry, 9 November: 66.5 µg/m³, 3.3× usual Puducherry, 10 November: no reading Puducherry, 11 November: 55.2 µg/m³, 2.7× usual Puducherry, 12 November: 48.2 µg/m³, 2.4× usual Puducherry, 13 November: 45.4 µg/m³, 2.2× usual Puducherry, 14 November: 46.0 µg/m³, 2.3× usual Puducherry, 15 November: no reading Puducherry, 16 November: no reading Puducherry, 17 November: 58.9 µg/m³, 2.9× usual Tirumala Tirumala, 8 November: no reading Tirumala, 9 November: 67.2 µg/m³, 3.2× usual Tirumala, 10 November: no reading Tirumala, 11 November: 77.2 µg/m³, 3.7× usual Tirumala, 12 November: 88.1 µg/m³, 4.2× usual Tirumala, 13 November: 75.0 µg/m³, 3.6× usual Tirumala, 14 November: 68.6 µg/m³, 3.3× usual Tirumala, 15 November: 84.5 µg/m³, 4.0× usual Tirumala, 16 November: 83.3 µg/m³, 4.0× usual Tirumala, 17 November: 70.0 µg/m³, 3.3× usual Bengaluru Bengaluru, 8 November: 46.4 µg/m³, 1.9× usual Bengaluru, 9 November: 30.3 µg/m³, 1.3× usual Bengaluru, 10 November: 52.8 µg/m³, 2.2× usual Bengaluru, 11 November: 50.8 µg/m³, 2.1× usual Bengaluru, 12 November: 44.5 µg/m³, 1.9× usual Bengaluru, 13 November: 41.3 µg/m³, 1.7× usual Bengaluru, 14 November: 52.1 µg/m³, 2.2× usual Bengaluru, 15 November: 43.9 µg/m³, 1.8× usual Bengaluru, 16 November: 40.2 µg/m³, 1.7× usual Bengaluru, 17 November: 36.5 µg/m³, 1.5× usual Ooty Ooty, 8 November: 47.9 µg/m³, 2.1× usual Ooty, 9 November: no reading Ooty, 10 November: no reading Ooty, 11 November: 475.0 µg/m³, 21× usual Ooty, 12 November: 36.7 µg/m³, 1.6× usual Ooty, 13 November: 12.6 µg/m³, 0.6× usual Ooty, 14 November: 461.0 µg/m³, 20× usual Ooty, 15 November: no reading Ooty, 16 November: no reading Ooty, 17 November: no reading Mangaluru Mangaluru, 8 November: 41.2 µg/m³, 1.4× usual Mangaluru, 9 November: 47.5 µg/m³, 1.6× usual Mangaluru, 10 November: 54.8 µg/m³, 1.9× usual Mangaluru, 11 November: 86.1 µg/m³, 2.9× usual Mangaluru, 12 November: 59.2 µg/m³, 2.0× usual Mangaluru, 13 November: 37.6 µg/m³, 1.3× usual Mangaluru, 14 November: 32.7 µg/m³, 1.1× usual Mangaluru, 15 November: 42.8 µg/m³, 1.4× usual Mangaluru, 16 November: 43.8 µg/m³, 1.5× usual Mangaluru, 17 November: 47.2 µg/m³, 1.6× usual Tiruppur Tiruppur, 8 November: 35.5 µg/m³, 1.2× usual Tiruppur, 9 November: 55.7 µg/m³, 1.8× usual Tiruppur, 10 November: no reading Tiruppur, 11 November: 68.5 µg/m³, 2.3× usual Tiruppur, 12 November: 66.6 µg/m³, 2.2× usual Tiruppur, 13 November: 45.9 µg/m³, 1.5× usual Tiruppur, 14 November: 61.4 µg/m³, 2.0× usual Tiruppur, 15 November: 59.7 µg/m³, 2.0× usual Tiruppur, 16 November: 61.2 µg/m³, 2.0× usual Tiruppur, 17 November: 57.0 µg/m³, 1.9× usual Perundurai Perundurai, 8 November: no reading Perundurai, 9 November: no reading Perundurai, 10 November: no reading Perundurai, 11 November: no reading Perundurai, 12 November: no reading Perundurai, 13 November: 50.3 µg/m³, 2.8× usual Perundurai, 14 November: 39.9 µg/m³, 2.2× usual Perundurai, 15 November: no reading Perundurai, 16 November: no reading Perundurai, 17 November: no reading Chikmagalūr Chikmagalūr, 8 November: no reading Chikmagalūr, 9 November: 25.1 µg/m³, 1.6× usual Chikmagalūr, 10 November: no reading Chikmagalūr, 11 November: no reading Chikmagalūr, 12 November: 29.2 µg/m³, 1.9× usual Chikmagalūr, 13 November: 42.1 µg/m³, 2.8× usual Chikmagalūr, 14 November: 40.7 µg/m³, 2.7× usual Chikmagalūr, 15 November: 31.0 µg/m³, 2.0× usual Chikmagalūr, 16 November: 37.5 µg/m³, 2.5× usual Chikmagalūr, 17 November: 30.3 µg/m³, 2.0× usual Neelankarai Neelankarai, 8 November: 56.3 µg/m³, 1.6× usual Neelankarai, 9 November: 68.3 µg/m³, 1.9× usual Neelankarai, 10 November: no reading Neelankarai, 11 November: 55.8 µg/m³, 1.6× usual Neelankarai, 12 November: 48.6 µg/m³, 1.4× usual Neelankarai, 13 November: 55.8 µg/m³, 1.6× usual Neelankarai, 14 November: 119.0 µg/m³, 3.3× usual Neelankarai, 15 November: 69.2 µg/m³, 1.9× usual Neelankarai, 16 November: 297.0 µg/m³, 8.3× usual Neelankarai, 17 November: 606.0 µg/m³, 17× usual Karur Karur, 8 November: no reading Karur, 9 November: 53.3 µg/m³, 2.2× usual Karur, 10 November: no reading Karur, 11 November: 96.1 µg/m³, 3.9× usual Karur, 12 November: 58.6 µg/m³, 2.4× usual Karur, 13 November: 44.4 µg/m³, 1.8× usual Karur, 14 November: 55.8 µg/m³, 2.3× usual Karur, 15 November: no reading Karur, 16 November: no reading Karur, 17 November: no reading 8 Nov 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
Ooty Tamil Nadu, India 2 11 November 22.6 21× Neelankarai Tamil Nadu, India 1 17 November 35.6 17× Tirumala Andhra Pradesh, India 4 12 November 20.9 4.2× Karur Tamil Nadu, India 1 11 November 24.5 3.9× Puducherry Puducherry, India 4 9 November 20.4 3.3× Mangaluru Karnataka, India 1 11 November 29.6 2.9× Perundurai Tamil Nadu, India 2 13 November 17.9 2.8× Chikmagalūr Karnataka, India 2 13 November 15.3 2.8× Amaravati Andhra Pradesh, India 4 15 November 30.7 2.6× Tiruppur Tamil Nadu, India 2 11 November 30.3 2.3× Coimbatore Tamil Nadu, India 2 14 November 34.4 2.2× Bengaluru Karnataka, India 2 10 November 23.9 2.2× Rasapūdipalem Andhra Pradesh, India 2 14 November 48.7 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 22 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 South-western India, November 2025 13 Bars: cities reached; colour: the level of the episode's highest daily reading. All 54 .
Use this page SmogRank, South-western India, November 2025: 13 cities with PM2.5 at twice their usual or more, 11 to 14 November 2025, smogrank.com/episodes/2025-11-south-western-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.
