SmogRank / India / Karnataka / Tumkūr

Tumkūr, month by month

Tumkūr has a measured daily mean on 193 days since 19 February 2025. Its worst month was March 2025, at 156 US AQI (62.0 µg/m³), 42nd of 2,862 cities on that month's world ranking. Its cleanest was July 2025, at 65 US AQI (16.6 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)83 days measured
Jan20 daysFeb12 daysMarnoneApr5 daysMay7 daysJun11 daysJul12 daysAug6 daysSep10 daysOctnone
2025too few days for a mean (a year needs 256)110 days measured
JanFeb10 daysMar156#42Apr12 daysMaynoneJun12 daysJul65#303Aug10 daysSep3 daysOctnoneNov1 dayDec9 days
Each square is a month's mean PM2.5 in US AQI from Tumkūr'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 Tumkūr 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

19 months
MonthWhy
Oct 2026No day measured. The others: 12 with no readings from the monitor.
Sep 202610 of 30 days measured; a month needs 21. The others: 4 with no readings from the monitor, 16 with readings for part of the day (a day needs 18 hours).
Aug 20266 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jul 202612 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.
Jun 202611 of 30 days measured; a month needs 21. The others: 19 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 20265 of 30 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
Mar 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 202612 of 28 days measured; a month needs 20. The others: 16 with under 18 hours of readings or readings that failed our checks.
Jan 202620 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Dec 20259 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Nov 20251 of 30 days measured; a month needs 21. The others: 29 with under 18 hours of readings or readings that failed our checks.
Oct 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 20253 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Aug 202510 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Jun 202512 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks.
May 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 202512 of 30 days measured; a month needs 21. The others: 18 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.

Tumkūr's worst months

MonthUS AQIDays measuredWorld rank
March 2025 15662.0 µg/m³29 of 3142ndof 2,862
July 2025 6516.6 µg/m³24 of 31303rdof 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.

Tumkūr's worst days

DayUS AQI
28 Jan 2026 243168.0 µg/m³
10 Apr 2026 234159.0 µg/m³
31 Mar 2025 233158.0 µg/m³
30 Jan 2026 231156.0 µg/m³
20 Feb 2025 230155.0 µg/m³
20 Dec 2025 230155.0 µg/m³
8 Mar 2025 221146.0 µg/m³
24 Feb 2025 203128.0 µg/m³
7 Mar 2025 199124.0 µg/m³
21 Feb 2025 197121.0 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, Tumkūr, India, 19 Feb 2025 – 26 Sep 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/tumkur/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.

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

Updated 2026-10-13 03:07 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).