SmogRank / Chile / Aysén / Puerto Aysén
Puerto Aysén, month by month
Puerto Aysén has a measured daily mean on 1,196 days since 1 January 2023. Its worst month was May 2024, at 151 US AQI (55.8 µg/m³), 25th of 2,684 cities on that month's world ranking. Its cleanest was January 2024, at 58 US AQI (12.7 µg/m³). 2025 averaged 90 US AQI (29.9 µg/m³), against 92 US AQI (31.1 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
5 months
| Month | Why |
|---|---|
| Feb 2026 | 14 of 28 days measured; a month needs 20. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| 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. |
| Dec 2025 | 11 of 31 days measured; a month needs 22. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| 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.
Puerto Aysén's worst months
| Month | US AQI | World rank |
|---|---|---|
| May 2024 | 15155.8 µg/m³ | 25thof 2,684 |
| July 2026 | 13850.6 µg/m³ | 38thof 2,784 |
| July 2023 | 13850.5 µg/m³ | 18thof 1,432 |
| July 2024 | 13448.7 µg/m³ | 31stof 2,566 |
| June 2025 | 13448.7 µg/m³ | 47thof 2,508 |
| August 2024 | 13047.4 µg/m³ | 15thof 2,010 |
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.
Puerto Aysén's worst days
| Day | US AQI |
|---|---|
| 8 Aug 2024 | 212137.0 µg/m³ |
| 18 May 2026 | 206131.0 µg/m³ |
| 20 Jul 2024 | 186105.0 µg/m³ |
| 16 May 2024 | 185104.0 µg/m³ |
| 20 Jul 2026 | 185104.0 µg/m³ |
| 21 May 2024 | 183101.0 µg/m³ |
| 16 Aug 2025 | 17793.0 µg/m³ |
| 15 Jul 2024 | 17589.1 µg/m³ |
| 13 Jul 2025 | 17386.7 µg/m³ |
| 6 Jul 2026 | 17286.0 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, Puerto Aysén, Chile, 1 Jan 2023 – 11 Oct 2026. Monitor data from Chile - SINCA via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/cl/puerto-aysen/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.
Puerto Aysén 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).