SmogRank / Chile / Aysén / Coyhaique
Coyhaique, month by month
Coyhaique has a measured daily mean on 1,300 days since 1 January 2023. Its worst month was July 2026, at 223 US AQI (147.4 µg/m³), 1st of 2,784 cities on that month's world ranking. Its cleanest was January 2023, at 61 US AQI (14.3 µg/m³). 2025 averaged 134 US AQI (49.1 µg/m³), against 141 US AQI (51.9 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.
Coyhaique's worst months
| Month | US AQI | World rank |
|---|---|---|
| July 2026 | 223147.4 µg/m³ | 1stof 2,784 |
| May 2024 | 214138.2 µg/m³ | 2ndof 2,684 |
| August 2026 | 189109.4 µg/m³ | 1stof 2,896 |
| May 2026 | 187106.4 µg/m³ | 1stof 2,874 |
| June 2023 | 187106.3 µg/m³ | 1stof 1,603 |
| June 2024 | 186105.2 µg/m³ | 2ndof 2,563 |
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.
Coyhaique's worst days
| Day | US AQI |
|---|---|
| 3 Jul 2026 | 500+398.5 µg/m³ |
| 2 Jul 2026 | 500+396.0 µg/m³ |
| 15 May 2024 | 500+386.5 µg/m³ |
| 20 Jun 2023 | 500+364.5 µg/m³ |
| 11 Jun 2025 | 500+359.0 µg/m³ |
| 20 May 2026 | 500+329.5 µg/m³ |
| 4 Jul 2026 | 500+325.5 µg/m³ |
| 10 Jul 2026 | 467309.0 µg/m³ |
| 22 May 2026 | 458304.5 µg/m³ |
| 23 May 2026 | 450300.5 µg/m³ |
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, Coyhaique, Chile, 1 Jan 2023 – 11 Oct 2026. Monitor data from Chile - SINCA via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/cl/coyhaique/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.
Coyhaique 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).