SmogRank / India / Kerala / Thiruvananthapuram
Thiruvananthapuram, month by month
Thiruvananthapuram has a measured daily mean on 505 days since 20 February 2025. Its worst month was December 2025, at 92 US AQI (30.9 µg/m³), 299th of 3,006 cities on that month's world ranking. Its cleanest was June 2026, at 51 US AQI (9.2 µg/m³).
Every month since 2025
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
| Month | Why |
|---|---|
| Oct 2026 | 5 of 12 days measured; a month needs 9. The others: 5 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
| Jan 2026 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Mar 2025 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | 8 of 28 days measured; a month needs 20. The others: 1 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.
Thiruvananthapuram's worst months
| Month | US AQI | World rank |
|---|---|---|
| December 2025 | 9230.9 µg/m³ | 299thof 3,006 |
| February 2026 | 8125.0 µg/m³ | 375thof 2,866 |
| March 2026 | 7119.9 µg/m³ | 607thof 2,971 |
| April 2025 | 6918.9 µg/m³ | 391stof 2,951 |
| April 2026 | 6818.3 µg/m³ | 440thof 2,941 |
| September 2025 | 6617.3 µg/m³ | 283rdof 3,104 |
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.
Thiruvananthapuram's worst days
| Day | US AQI |
|---|---|
| 7 Mar 2025 | 222147.0 µg/m³ |
| 18 Mar 2025 | 217142.0 µg/m³ |
| 23 Mar 2025 | 194117.0 µg/m³ |
| 13 Mar 2025 | 187107.0 µg/m³ |
| 23 Feb 2025 | 17792.9 µg/m³ |
| 25 Feb 2025 | 17792.6 µg/m³ |
| 27 Feb 2025 | 16575.8 µg/m³ |
| 20 Feb 2025 | 16271.9 µg/m³ |
| 16 Sept 2026 | 15257.1 µg/m³ |
| 10 Mar 2025 | 15256.9 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, Thiruvananthapuram, India, 20 Feb 2025 – 7 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/thiruvananthapuram/history (accessed 12 Oct 2026).
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.
Thiruvananthapuram now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 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).