SmogRank / Episodes / India

North-western India, 26 to 28 March 2025

For 3 days, from 26 to 28 March 2025, 13 cities in India had PM2.5 at least twice their usual for the time of year. The worst reading was Loni, Uttar Pradesh, India: 326.0 µg/m³ on 27 March, about 3.0× its usual 108.0.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached13in 1 country
Days326 to 28 March 2025
Worst day26 March8 cities counted
Furthest above usual20×Rishīkesh

Day by day

26 March 8 cities at twice their usual or more
Charkhi DādriBhiwadiAlwarJhunjhunūnGurugramNajafgarhAya NagarDera MāndiBawānaFaridabadDelhiSīkarNoidaDausaJaipurChūruGhāziābādDādriVrindāvanKhurjaBulandshahrHāpurMeerutKarauliTonkAgraMuzaffarnagarDhaulpurAjmerFīrozābādBathindaKhannaMohaliNāgaurMorādābādGwaliorBūndiLudhianaDehradunRoparBikanerBaddiKotaBārānBhilwaraBareillyNandriJodhpurPāliRājsamandKanpurJalorChandigarhGreater NoidaSawai MadhopurPatiālaNarelaSri GanganagarBharatpurGobindgarhJhānsiBāghpatHanumāngarhLoniRishīkesh
23 Mar2425262728293031
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

LoniLoni, 23 March: 255.0 µg/m³Loni, 24 March: no readingLoni, 25 March: no readingLoni, 26 March: 287.0 µg/m³, 2.7× its usual 108.0Loni, 27 March: 326.0 µg/m³, 3.0× its usual 108.0Loni, 28 March: 219.0 µg/m³, 2.1× its usual 106.0Loni, 29 March: 166.0 µg/m³Loni, 30 March: 159.0 µg/m³Loni, 31 March: 172.0 µg/m³BāghpatBāghpat, 23 March: 119.0 µg/m³Bāghpat, 24 March: no readingBāghpat, 25 March: no readingBāghpat, 26 March: 130.0 µg/m³, 2.5× its usual 51.9Bāghpat, 27 March: 121.0 µg/m³, 2.3× its usual 52.5Bāghpat, 28 March: no readingBāghpat, 29 March: no readingBāghpat, 30 March: 44.8 µg/m³Bāghpat, 31 March: 58.6 µg/m³RishīkeshRishīkesh, 23 March: 44.3 µg/m³Rishīkesh, 24 March: no readingRishīkesh, 25 March: no readingRishīkesh, 26 March: 97.6 µg/m³, 20× its usual 1.2Rishīkesh, 27 March: 38.1 µg/m³, 7.6× its usual 1.2Rishīkesh, 28 March: 33.3 µg/m³, 6.7× its usual 1.2Rishīkesh, 29 March: 36.9 µg/m³Rishīkesh, 30 March: 25.4 µg/m³Rishīkesh, 31 March: 30.7 µg/m³Sri GanganagarSri Ganganagar, 23 March: 55.2 µg/m³Sri Ganganagar, 24 March: 64.4 µg/m³Sri Ganganagar, 25 March: 65.3 µg/m³Sri Ganganagar, 26 March: 69.3 µg/m³, 2.3× its usual 29.8Sri Ganganagar, 27 March: 43.7 µg/m³Sri Ganganagar, 28 March: 48.3 µg/m³Sri Ganganagar, 29 March: 46.3 µg/m³Sri Ganganagar, 30 March: 42.6 µg/m³Sri Ganganagar, 31 March: 53.7 µg/m³BharatpurBharatpur, 23 March: 42.1 µg/m³Bharatpur, 24 March: 47.9 µg/m³Bharatpur, 25 March: 45.9 µg/m³Bharatpur, 26 March: 68.3 µg/m³, 2.4× its usual 28.7Bharatpur, 27 March: 56.7 µg/m³Bharatpur, 28 March: 31.5 µg/m³Bharatpur, 29 March: 20.5 µg/m³Bharatpur, 30 March: 20.4 µg/m³Bharatpur, 31 March: 36.0 µg/m³HanumāngarhHanumāngarh, 23 March: 76.5 µg/m³Hanumāngarh, 24 March: 65.7 µg/m³Hanumāngarh, 25 March: no readingHanumāngarh, 26 March: 62.4 µg/m³, 2.6× its usual 24.2Hanumāngarh, 27 March: 45.8 µg/m³Hanumāngarh, 28 March: 53.9 µg/m³, 2.1× its usual 26.2Hanumāngarh, 29 March: 69.9 µg/m³Hanumāngarh, 30 March: 75.3 µg/m³Hanumāngarh, 31 March: 61.5 µg/m³Sawai MadhopurSawai Madhopur, 23 March: 39.6 µg/m³Sawai Madhopur, 24 March: 49.3 µg/m³Sawai Madhopur, 25 March: 54.0 µg/m³Sawai Madhopur, 26 March: 57.4 µg/m³, 2.1× its usual 26.9Sawai Madhopur, 27 March: 51.2 µg/m³Sawai Madhopur, 28 March: 35.4 µg/m³Sawai Madhopur, 29 March: 36.4 µg/m³Sawai Madhopur, 30 March: 47.2 µg/m³Sawai Madhopur, 31 March: 50.7 µg/m³JhānsiJhānsi, 23 March: 21.2 µg/m³Jhānsi, 24 March: 31.7 µg/m³Jhānsi, 25 March: 46.9 µg/m³Jhānsi, 26 March: 45.3 µg/m³, 2.5× its usual 17.9Jhānsi, 27 March: 52.2 µg/m³Jhānsi, 28 March: 36.0 µg/m³Jhānsi, 29 March: 34.8 µg/m³Jhānsi, 30 March: 34.6 µg/m³Jhānsi, 31 March: 41.9 µg/m³NarelaNarela, 23 March: 144.0 µg/m³Narela, 24 March: 112.0 µg/m³Narela, 25 March: 142.0 µg/m³Narela, 26 March: 130.0 µg/m³Narela, 27 March: 179.0 µg/m³, 2.2× its usual 79.8Narela, 28 March: 71.2 µg/m³Narela, 29 March: 38.1 µg/m³Narela, 30 March: 53.4 µg/m³Narela, 31 March: 69.9 µg/m³Greater NoidaGreater Noida, 23 March: 34.8 µg/m³Greater Noida, 24 March: 47.3 µg/m³Greater Noida, 25 March: 61.2 µg/m³Greater Noida, 26 March: 53.8 µg/m³Greater Noida, 27 March: 80.7 µg/m³, 2.0× its usual 40.0Greater Noida, 28 March: 20.9 µg/m³Greater Noida, 29 March: 11.1 µg/m³Greater Noida, 30 March: 13.9 µg/m³Greater Noida, 31 March: 22.2 µg/m³ChandigarhChandigarh, 23 March: 59.2 µg/m³Chandigarh, 24 March: 69.0 µg/m³Chandigarh, 25 March: 65.0 µg/m³Chandigarh, 26 March: 61.5 µg/m³Chandigarh, 27 March: 69.4 µg/m³, 2.0× its usual 34.1Chandigarh, 28 March: 50.8 µg/m³Chandigarh, 29 March: 30.4 µg/m³Chandigarh, 30 March: 39.2 µg/m³Chandigarh, 31 March: 43.1 µg/m³PatiālaPatiāla, 23 March: 57.6 µg/m³Patiāla, 24 March: 56.5 µg/m³Patiāla, 25 March: 67.4 µg/m³Patiāla, 26 March: no readingPatiāla, 27 March: 68.9 µg/m³, 2.2× its usual 30.8Patiāla, 28 March: 54.8 µg/m³Patiāla, 29 March: 28.6 µg/m³Patiāla, 30 March: 25.8 µg/m³Patiāla, 31 March: 40.6 µg/m³GobindgarhGobindgarh, 23 March: 49.5 µg/m³Gobindgarh, 24 March: 40.0 µg/m³Gobindgarh, 25 March: 45.4 µg/m³Gobindgarh, 26 March: 71.7 µg/m³Gobindgarh, 27 March: 40.7 µg/m³Gobindgarh, 28 March: 117.0 µg/m³, 2.4× its usual 49.2Gobindgarh, 29 March: 52.5 µg/m³Gobindgarh, 30 March: 43.4 µg/m³Gobindgarh, 31 March: 43.7 µg/m³23 Mar2425262728293031
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
RishīkeshUttarakhand, India3 97.626 March1.220×
LoniUttar Pradesh, India3 326.027 March108.03.0×
HanumāngarhRajasthan, India2 62.426 March24.22.6×
BāghpatUttar Pradesh, India2 130.026 March51.92.5×
JhānsiUttar Pradesh, India1 45.326 March17.92.5×
GobindgarhPunjab, India1 117.028 March49.22.4×
BharatpurRajasthan, India1 68.326 March28.72.4×
Sri GanganagarRajasthan, India1 69.326 March29.82.3×
NarelaDelhi, India1 179.027 March79.82.2×
PatiālaPunjab, India1 68.927 March30.82.2×
Sawai MadhopurRajasthan, India1 57.426 March26.92.1×
Greater NoidaUttar Pradesh, India1 80.727 March40.02.0×
ChandigarhChandigarh, India1 69.427 March34.12.0×

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 24 of 54 episodes in India since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 54.

Use this page

SmogRank, North-western India, 26 to 28 March 2025: 13 cities with PM2.5 at twice their usual or more, 26 to 28 March 2025, smogrank.com/episodes/2025-03-26-north-western-india (accessed 4 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.