SmogRank / India / Kerala / Kannur

Kannur, month by month

Kannur has a measured daily mean on 379 days since 20 February 2025. Its worst month was February 2026, at 136 US AQI (49.6 µg/m³), 107th of 2,866 cities on that month's world ranking. Its cleanest was March 2025, at 87 US AQI (28.5 µg/m³).

Every month since 2025

2026too few days for a mean (a year needs 200)166 days measured
Jan16 daysFeb136#107Mar21 daysApr18 daysMay105#118Jun18 daysJul18 daysAug20 daysSep11 daysOct1 day
2025too few days for a mean (a year needs 256)213 days measured
JanFeb5 daysMar87#332Apr20 daysMay9 daysJun18 daysJul88#93Aug90#85Sep95#65Oct18 daysNov88#262Dec93#286
Each square is a month's mean PM2.5 in US AQI from Kannur'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 Kannur 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

13 months
MonthWhy
Oct 20261 of 12 days measured; a month needs 9. The others: 7 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours).
Sep 202611 of 30 days measured; a month needs 21. The others: 3 with no readings from the monitor, 16 with readings for part of the day (a day needs 18 hours).
Aug 202620 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jul 202618 of 31 days measured; a month needs 22. The others: 13 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.
Apr 202618 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
Mar 202621 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Jan 202616 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks.
Oct 202518 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Jun 202518 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks.
May 20259 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks.
Apr 202520 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks.
Feb 20255 of 28 days measured; a month needs 20. The others: 4 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.

Kannur's worst months

MonthUS AQIDays measuredWorld rank
February 2026 13649.6 µg/m³20 of 28107thof 2,866
May 2026 10537.3 µg/m³23 of 31118thof 2,874
September 2025 9532.9 µg/m³21 of 3065thof 3,104
December 2025 9331.8 µg/m³28 of 31286thof 3,006
August 2025 9030.0 µg/m³23 of 3185thof 2,901
November 2025 8828.9 µg/m³26 of 30262ndof 2,715

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.

Kannur's worst days

DayUS AQI
3 Apr 2026 15763.5 µg/m³
2 Apr 2026 15663.2 µg/m³
1 Apr 2026 15662.7 µg/m³
22 Feb 2026 15358.4 µg/m³
5 Feb 2026 15256.9 µg/m³
28 Feb 2026 15256.8 µg/m³
28 Jan 2026 15256.5 µg/m³
22 Aug 2026 15256.3 µg/m³
29 Mar 2026 15155.9 µg/m³
7 Feb 2026 15155.8 µg/m³

Daily means, the highest since 20 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, Kannur, India, 20 Feb 2025 – 3 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/kannur/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.

Kannur 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).