SmogRank / World / Asia / India / Karnataka

Most polluted cities in Karnataka, India

6 measured cities, this year; 6 above the WHO annual guideline. Worst: Bengaluru at 28.7 µg/m³, #204 in the world.

464 monitors in India haven't reported for more than two days. Cities that rely on them are missing from the 24-hour board and may drop from the longer ones; that isn't clean air, and they return when the data does.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.

← Bengaluru 32% 30%0

Every measured city in Karnataka, India, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.

1Bengalurulast full day 30 Sept 32%
2Closepetlast full day 30 Sept 28%
3Shivamoggalast full day 21 Sept 6%
4Madikerilast full day 27 Sept 1%
5Hubballilast full day 30 Sept 0%
6Kalaburagilast full day 30 Sept 0%

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

Estimated: cities without a monitor

Karnataka cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Mysuru	≈ 21 µg/m³	Moderate
Ballari	≈ 31 µg/m³	Moderate
Rāichūr	≈ 36 µg/m³	Unhealthy for sensitive groups
Bidar	≈ 34 µg/m³	Moderate
Hosapete	≈ 31 µg/m³	Moderate
Gadag	≈ 31 µg/m³	Moderate
Bhadrāvati	≈ 22 µg/m³	Moderate
Robertsonpet	≈ 26 µg/m³	Moderate
Hassan	≈ 20 µg/m³	Moderate
Chitradurga	≈ 24 µg/m³	Moderate
Mandya	≈ 21 µg/m³	Moderate
Yelahanka	≈ 28 µg/m³	Moderate
Gangavati	≈ 31 µg/m³	Moderate
Bagalkot	≈ 31 µg/m³	Moderate
Ranebennur	≈ 26 µg/m³	Moderate
Doddaballapura	≈ 28 µg/m³	Moderate
Harihar	≈ 25 µg/m³	Moderate
Gokak	≈ 32 µg/m³	Moderate
Rabkavi-Banhatti	≈ 33 µg/m³	Moderate
Electronic City Phase I	≈ 29 µg/m³	Moderate
Chintamani	≈ 22 µg/m³	Moderate
Sindhnūr	≈ 32 µg/m³	Moderate
Rabkavi	≈ 33 µg/m³	Moderate
Channapatna	≈ 24 µg/m³	Moderate
Koppal	≈ 29 µg/m³	Moderate
Chamrajnagar	≈ 18 µg/m³	Moderate
Basavakalyan	≈ 29 µg/m³	Moderate
Jamkhandi	≈ 33 µg/m³	Moderate
Hāveri	≈ 26 µg/m³	Moderate
Sirsi	≈ 23 µg/m³	Moderate
Tiptūr	≈ 20 µg/m³	Moderate
Ilkal	≈ 31 µg/m³	Moderate
Ullal	≈ 19 µg/m³	Moderate
Sīra	≈ 22 µg/m³	Moderate
Mulbāgal	≈ 23 µg/m³	Moderate
Kollegāl	≈ 18 µg/m³	Moderate
Hoskote	≈ 28 µg/m³	Moderate
Hiriyūr	≈ 23 µg/m³	Moderate
Challakere	≈ 24 µg/m³	Moderate
Sāgar	≈ 20 µg/m³	Moderate

Bad-air episodes in Karnataka

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

Use this board

SmogRank, most polluted cities in Karnataka, India, PM2.5, this year to 6 Oct 2026, 22:00 UTC, smogrank.com/in/region/karnataka?w=year.

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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.

Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.