SmogRank / Chile / Maule Region / Talca
Talca, month by month
Talca has a measured daily mean on 1,302 days since 1 January 2023. Its worst month was July 2024, at 152 US AQI (57.4 µg/m³), 26th of 2,566 cities on that month's world ranking. Its cleanest was November 2024, at 61 US AQI (14.4 µg/m³). 2025 averaged 87 US AQI (28.4 µg/m³), against 83 US AQI (26.5 µg/m³) in 2024.
Every month since 2023
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
2 months
| Month | Why |
|---|---|
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Talca's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2024 | 15257.4 µg/m³ | 26thof 2,566 | Southern Chile, July 2024 South-western Chile, July 2024and 1 more |
| June 2025 | 15055.3 µg/m³ | 30thof 2,508 | Southern Chile, 29 June to 4 July 2025 South-western Chile, June 2025and 1 more |
| May 2026 | 14754.3 µg/m³ | 46thof 2,874 | Chile, May 2026 Southern Chile, May 2026 |
| July 2025 | 14352.4 µg/m³ | 30thof 2,889 | Southern Chile, 29 June to 4 July 2025 |
| May 2024 | 14051.5 µg/m³ | 29thof 2,684 | South-western Chile, 14 to 19 May 2024 |
| June 2026 | 12946.7 µg/m³ | 59thof 2,497 | – |
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.
Talca's worst days
| Day | US AQI | Episode |
|---|---|---|
| 8 Jul 2026 | 208133.0 µg/m³ | Southern Chile, July 2026 |
| 7 Jul 2026 | 194117.0 µg/m³ | Southern Chile, July 2026 |
| 11 Jun 2025 | 188108.0 µg/m³ | South-western Chile, June 2025 |
| 3 Jul 2025 | 186106.0 µg/m³ | Southern Chile, 29 June to 4 July 2025 |
| 2 Jul 2025 | 184103.0 µg/m³ | Southern Chile, 29 June to 4 July 2025 |
| 4 Jul 2025 | 182100.0 µg/m³ | Southern Chile, 29 June to 4 July 2025 |
| 19 May 2026 | 18299.5 µg/m³ | Southern Chile, May 2026 |
| 26 Jun 2024 | 18299.3 µg/m³ | – |
| 5 Jul 2026 | 18299.2 µg/m³ | Southern Chile, July 2026 |
| 20 May 2026 | 17995.7 µg/m³ | Southern Chile, May 2026 |
Daily means, the highest since 1 Jan 2023; 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, Talca, Chile, 1 Jan 2023 – 11 Oct 2026. Monitor data from Chile - SINCA via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/cl/talca/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.
Talca now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 17:07 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).