SmogRank / India / Karnataka / Hubballi

Hubballi, month by month

Hubballi has a measured daily mean on 499 days since 19 February 2025. Its worst month was November 2025, at 82 US AQI (25.5 µg/m³), 288th of 2,715 cities on that month's world ranking. Its cleanest was July 2025, at 66 US AQI (17.4 µg/m³).

Every month since 2025

202677 so far212 days measured289th of 2,798 in the world
Jan21 daysFeb19 daysMar80#448Apr77#340May81#213Jun75#226Jul73#308Aug75#203Sep76#226Oct3 days
202573 for the year287 days measured232nd of 2,681 in the world
JanFeb10 daysMar77#463Apr74#301May70#281Jun67#281Jul66#274Aug68#244Sep69#244Oct74#265Nov82#288Dec81#366
Each square is a month's mean PM2.5 in US AQI from Hubballi'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 Hubballi 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

4 months
MonthWhy
Oct 20263 of 12 days measured; a month needs 9. The others: 5 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours).
Feb 202619 of 28 days measured; a month needs 20. The others: 9 with under 18 hours of readings or readings that failed our checks.
Jan 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 202510 of 28 days measured; a month needs 20.

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

Hubballi's worst months

MonthUS AQIDays measuredWorld rank
November 2025 8225.5 µg/m³28 of 30288thof 2,715
May 2026 8125.4 µg/m³22 of 31213thof 2,874
December 2025 8125.1 µg/m³31 of 31366thof 3,006
March 2026 8024.4 µg/m³25 of 31448thof 2,971
April 2026 7723.1 µg/m³22 of 30340thof 2,941
March 2025 7723.0 µg/m³27 of 31463rdof 2,862

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.

Hubballi's worst days

DayUS AQI
20 Feb 2025 10637.4 µg/m³
16 Mar 2026 9331.4 µg/m³
13 Mar 2026 9030.3 µg/m³
21 Jan 2026 9030.0 µg/m³
14 Mar 2026 8929.3 µg/m³
11 Oct 2025 8829.2 µg/m³
11 Nov 2025 8829.1 µg/m³
22 Feb 2025 8828.9 µg/m³
12 Mar 2026 8828.7 µg/m³
16 Jul 2026 8728.6 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, Hubballi, India, 19 Feb 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/hubballi/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.

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

Updated 2026-10-13 02:07 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).