SmogRank / United States / Alaska / Anchorage
Anchorage, month by month
Anchorage has a measured daily mean on 1,248 days since 1 January 2023. Its worst month was December 2025, at 59 US AQI (13.3 µg/m³), 833rd of 3,006 cities on that month's world ranking. Its cleanest was May 2026, at 8 US AQI (1.4 µg/m³). 2025 averaged 32 US AQI (5.7 µg/m³), against 29 US AQI (5.3 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 |
|---|---|
| Feb 2026 | 6 of 28 days measured; a month needs 20. The others: 22 with under 18 hours of readings or readings that failed our checks. |
| Jan 2026 | 16 of 31 days measured; a month needs 22. The others: 15 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.
Anchorage's worst months
| Month | US AQI | World rank |
|---|---|---|
| December 2025 | 5913.3 µg/m³ | 833rdof 3,006 |
| November 2025 | 5310.1 µg/m³ | 1,013thof 2,715 |
| November 2024 | 529.8 µg/m³ | 890thof 2,624 |
| January 2024 | 519.2 µg/m³ | 990thof 2,385 |
| February 2025 | 519.2 µg/m³ | 1,307thof 2,633 |
| December 2024 | 437.7 µg/m³ | 1,465thof 2,616 |
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.
Anchorage's worst days
| Day | US AQI |
|---|---|
| 1 Jan 2026 | 11842.6 µg/m³ |
| 19 Dec 2025 | 9230.9 µg/m³ |
| 25 Dec 2025 | 8728.2 µg/m³ |
| 10 Dec 2025 | 8426.8 µg/m³ |
| 2 Jan 2026 | 8226.0 µg/m³ |
| 11 Dec 2025 | 8225.6 µg/m³ |
| 3 Jan 2026 | 8125.2 µg/m³ |
| 23 Dec 2025 | 8024.7 µg/m³ |
| 3 Jan 2025 | 7924.0 µg/m³ |
| 31 Dec 2025 | 7823.8 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, Anchorage, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/anchorage/history (accessed 13 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.
Anchorage now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 00:07 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).