SmogRank / Episodes / India

Western and southern India, May 2025

For 1 day, on 20 May 2025, 8 cities in India had PM2.5 at least twice their usual for the time of year. The worst reading was Kadapa, Andhra Pradesh, India: 98.3 µg/m³ on 20 May, about 3.0× its usual 32.4. Ended 20 May.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached8in 1 country
Days120 May 2025
Worst day20 May8 cities counted
Furthest above usual4.4×Koppal

Day by day

20 May 8 cities at twice their usual or more
VijayapuraSholapurKalaburagiYadgirKolhāpurLaturBelagaviHubballiPunePatancheruSerilingampalleAmīnpurBirvādiPimpri-ChinchwadMahādNandedHyderabadQuthbullapurAnantapurWadgaon KolhatiBadlapurPanvelKalyānMumbaiBhiwandiThāneBhayandarBoisarSāngliPotreddipalliSangāreddiKhargharTalojeVirārKadapaKoppal
17 May181920212223
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

KadapaKadapa, 17 May: 30.5 µg/m³Kadapa, 18 May: no readingKadapa, 19 May: no readingKadapa, 20 May: 98.3 µg/m³, 3.0× its usual 32.4Kadapa, 21 May: no readingKadapa, 22 May: no readingKadapa, 23 May: 39.9 µg/m³VirārVirār, 17 May: 21.5 µg/m³Virār, 18 May: 19.1 µg/m³Virār, 19 May: 21.6 µg/m³Virār, 20 May: 71.3 µg/m³, 2.6× its usual 27.3Virār, 21 May: 38.2 µg/m³Virār, 22 May: 31.4 µg/m³Virār, 23 May: 21.8 µg/m³KoppalKoppal, 17 May: 4.3 µg/m³Koppal, 18 May: no readingKoppal, 19 May: no readingKoppal, 20 May: 69.7 µg/m³, 4.4× its usual 15.8Koppal, 21 May: no readingKoppal, 22 May: 6.7 µg/m³Koppal, 23 May: 64.9 µg/m³SangāreddiSangāreddi, 17 May: 51.3 µg/m³Sangāreddi, 18 May: 49.5 µg/m³Sangāreddi, 19 May: 52.4 µg/m³Sangāreddi, 20 May: 66.9 µg/m³, 2.1× its usual 31.5Sangāreddi, 21 May: 54.6 µg/m³Sangāreddi, 22 May: 61.8 µg/m³Sangāreddi, 23 May: 69.8 µg/m³PotreddipalliPotreddipalli, 17 May: 51.3 µg/m³Potreddipalli, 18 May: 49.5 µg/m³Potreddipalli, 19 May: 52.4 µg/m³Potreddipalli, 20 May: 66.9 µg/m³, 2.1× its usual 31.5Potreddipalli, 21 May: 54.6 µg/m³Potreddipalli, 22 May: 61.8 µg/m³Potreddipalli, 23 May: 69.8 µg/m³TalojeTaloje, 17 May: 8.1 µg/m³Taloje, 18 May: 21.3 µg/m³Taloje, 19 May: 34.7 µg/m³Taloje, 20 May: 58.0 µg/m³, 2.2× its usual 26.0Taloje, 21 May: 50.3 µg/m³Taloje, 22 May: 33.7 µg/m³Taloje, 23 May: 71.2 µg/m³KhargharKharghar, 17 May: 8.1 µg/m³Kharghar, 18 May: 21.3 µg/m³Kharghar, 19 May: 34.7 µg/m³Kharghar, 20 May: 58.0 µg/m³, 2.2× its usual 26.0Kharghar, 21 May: 50.3 µg/m³Kharghar, 22 May: 33.7 µg/m³Kharghar, 23 May: 71.2 µg/m³SāngliSāngli, 17 May: 22.6 µg/m³Sāngli, 18 May: 36.8 µg/m³Sāngli, 19 May: 29.5 µg/m³Sāngli, 20 May: 43.5 µg/m³, 2.1× its usual 20.6Sāngli, 21 May: 38.2 µg/m³Sāngli, 22 May: no readingSāngli, 23 May: 13.2 µg/m³17 May181920212223
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.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
KoppalKarnataka, India1 69.720 May15.84.4×
KadapaAndhra Pradesh, India1 98.320 May32.43.0×
VirārMaharashtra, India1 71.320 May27.32.6×
TalojeMaharashtra, India1 58.020 May26.02.2×
KhargharMaharashtra, India1 58.020 May26.02.2×
SangāreddiTelangana, India1 66.920 May31.52.1×
PotreddipalliTelangana, India1 66.920 May31.52.1×
SāngliMaharashtra, India1 43.520 May20.62.1×

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 59 of 61 episodes in India since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 61.

Use this page

SmogRank, Western and southern India, May 2025: 8 cities with PM2.5 at twice their usual or more, 20 May 2025, smogrank.com/episodes/2025-05-western-and-southern-india (accessed 5 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.