SmogRank / India / Punjab / Mohali

Mohali, month by month

Mohali has a measured daily mean on 364 days since 19 February 2025. Its worst month was December 2025, at 173 US AQI (87.2 µg/m³), 71st of 3,006 cities on that month's world ranking. Its cleanest was July 2025, at 72 US AQI (20.6 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)132 days measured
Jan5 daysFeb6 daysMar21 daysApr19 daysMay4 daysJun19 daysJul20 daysAug16 daysSep16 daysOct6 days
2025too few days for a mean (a year needs 256)232 days measured
JanFeb5 daysMar105#192Apr122#62May115#72Jun117#70Jul72#189Aug20 daysSep14 daysOct17 daysNov20 daysDec173#71
Each square is a month's mean PM2.5 in US AQI from Mohali's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Mohali marked; each year, the year's.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Months without a mean, and why

15 months
MonthWhy
Oct 20266 of 12 days measured; a month needs 9. The others: 5 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).
Sep 202616 of 30 days measured; a month needs 21. The others: 3 with no readings from the monitor, 11 with readings for part of the day (a day needs 18 hours).
Aug 202616 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Jul 202620 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jun 202619 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
May 20264 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Apr 202619 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks.
Mar 202621 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Feb 20266 of 28 days measured; a month needs 20. The others: 22 with under 18 hours of readings or readings that failed our checks.
Jan 20265 of 31 days measured; a month needs 22. The others: 26 with under 18 hours of readings or readings that failed our checks.
Nov 202520 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Oct 202517 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Sep 202514 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
Aug 202520 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Feb 20255 of 28 days measured; a month needs 20. The others: 5 with under 18 hours of readings or readings that failed our checks.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Mohali's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2025 17387.2 µg/m³30 of 3171stof 3,006–
April 2025 12244.0 µg/m³22 of 3062ndof 2,951North-western India, 20 to 22 April 2025
North-western India, 6 to 8 April 2025and 1 more
June 2025 11741.8 µg/m³24 of 3070thof 2,508Northern India and Pakistan, June 2025
May 2025 11541.2 µg/m³29 of 3172ndof 2,826North-western India, 15 to 16 May 2025
March 2025 10537.1 µg/m³22 of 31192ndof 2,862Northern India, March and April 2025
July 2025 7220.6 µg/m³29 of 31189thof 2,889–

Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.

Mohali's worst days

DayUS AQI
12 Dec 2025 198122.0 µg/m³
20 Dec 2025 198122.0 µg/m³
29 Dec 2025 194117.0 µg/m³
26 Dec 2025 193115.0 µg/m³
25 Dec 2025 189109.0 µg/m³
21 Dec 2025 186106.0 µg/m³
18 Dec 2025 184102.0 µg/m³
19 Dec 2025 182100.0 µg/m³
31 Dec 2025 182100.0 µg/m³
28 Dec 2025 18198.4 µg/m³

Daily means, the highest since 19 Feb 2025; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.

Use this history

SmogRank, PM2.5 monthly and daily means, Mohali, India, 19 Feb 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/mohali/history (accessed 12 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Mohali now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).