SmogRank / India / Haryana / Hisar

Hisar, month by month

Hisar has a measured daily mean on 215 days since 20 October 2025. Its worst month was November 2025, at 156 US AQI (62.4 µg/m³), 125th of 2,715 cities on that month's world ranking. Its cleanest was August 2026, at 82 US AQI (25.9 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)170 days measured
Jan15 daysFeb15 daysMar83#385Apr20 daysMay7 daysJun18 daysJul17 daysAug82#153Sep112#54Oct6 days
2025too few days for a mean (a year needs 256)45 days measured
JanFebMarAprMayJunJulAugSepOct6 daysNov156#125Dec17 days
Each square is a month's mean PM2.5 in US AQI from Hisar'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 Hisar 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

9 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).
Jul 202617 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Jun 202618 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
May 20267 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks.
Apr 202620 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Feb 202615 of 28 days measured; a month needs 20. The others: 13 with under 18 hours of readings or readings that failed our checks.
Jan 202615 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Dec 202517 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks.
Oct 20256 of 31 days measured; a month needs 22. The others: 6 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.

Hisar's worst months

MonthUS AQIDays measuredWorld rank
November 2025 15662.4 µg/m³22 of 30125thof 2,715
September 2026 11240.1 µg/m³25 of 3054thof 2,981
March 2026 8326.1 µg/m³24 of 31385thof 2,971
August 2026 8225.9 µg/m³23 of 31153rdof 2,896

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.

Hisar's worst days

DayUS AQI
20 Oct 2025 193115.0 µg/m³
17 Jun 2026 192114.0 µg/m³
12 Jul 2026 189110.0 µg/m³
11 Jun 2026 17995.7 µg/m³
12 Nov 2025 17995.3 µg/m³
21 Oct 2025 17589.5 µg/m³
11 Nov 2025 17184.5 µg/m³
18 Jun 2026 17082.8 µg/m³
25 Oct 2025 17082.2 µg/m³
23 Dec 2025 16980.8 µg/m³

Daily means, the highest since 20 Oct 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, Hisar, India, 20 Oct 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/hisar/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.

Hisar 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).