SmogRank / India / Bihar / Bihār Sharīf

Bihār Sharīf, month by month

Bihār Sharīf has a measured daily mean on 312 days since 19 February 2025. Its worst month was December 2025, at 171 US AQI (84.0 µg/m³), 75th of 3,006 cities on that month's world ranking. Its cleanest was June 2026, at 84 US AQI (27.0 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)166 days measured
Jan18 daysFeb14 daysMar113#146Apr89#232May93#159Jun84#171Jul14 daysAug1 daySep16 daysOct4 days
2025too few days for a mean (a year needs 256)146 days measured
JanFeb5 daysMar7 daysApr2 daysMay4 daysJun3 daysJul2 daysAug18 daysSep133#18Oct122#118Nov156#122Dec171#75
Each square is a month's mean PM2.5 in US AQI from Bihār Sharīf'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 Bihār Sharīf marked; each year, the year's.
Good0–50
Moderate51–100
Unhealthy for 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

13 months
MonthWhy
Oct 20264 of 12 days measured; a month needs 9. The others: 5 with no readings from the monitor, 3 with readings for part of the day (a day needs 18 hours).
Sep 202616 of 30 days measured; a month needs 21. The others: 14 with readings for part of the day (a day needs 18 hours).
Aug 20261 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Jul 202614 of 31 days measured; a month needs 22. The others: 17 with under 18 hours of readings or readings that failed our checks.
Feb 202614 of 28 days measured; a month needs 20. The others: 14 with under 18 hours of readings or readings that failed our checks.
Jan 202618 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Aug 202518 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Jul 20252 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks.
Jun 20253 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
May 20254 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Apr 20252 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
Mar 20257 of 31 days measured; a month needs 22. The others: 24 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.

Bihār Sharīf's worst months

MonthUS AQIDays measuredWorld rankEpisode
December 2025 17184.0 µg/m³28 of 3175thof 3,006–
November 2025 15662.9 µg/m³25 of 30122ndof 2,715–
September 2025 13348.5 µg/m³24 of 3018thof 3,104–
October 2025 12243.9 µg/m³28 of 31118thof 2,614India and Pakistan, October 2025
Eastern India, October 2025
March 2026 11340.3 µg/m³24 of 31146thof 2,971–
May 2026 9331.9 µg/m³24 of 31159thof 2,874Northern India, May 2026

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.

Bihār Sharīf's worst days

DayUS AQIEpisode
2 Aug 2026 410280.0 µg/m³–
15 Nov 2025 235160.0 µg/m³–
21 Oct 2025 204129.0 µg/m³India and Pakistan, October 2025
12 Dec 2025 197121.0 µg/m³–
24 Apr 2026 196119.0 µg/m³Eastern India, April 2026
9 Dec 2025 194117.0 µg/m³–
8 Dec 2025 193115.0 µg/m³–
17 Dec 2025 189109.0 µg/m³–
4 Sept 2026 187107.0 µg/m³North-eastern India and Bhutan, September 2026
25 May 2026 186105.0 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, Bihār Sharīf, India, 19 Feb 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/bihar-sharif/history (accessed 13 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.

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

Updated 2026-10-13 04:07 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).