Anchorage Air Quality in 2023
In 2023, Anchorage's air quality (Anchorage, AK area) had a median daily AQI of 25 (Good) across 365 monitored days. 1 day (0.3%) reached Unhealthy for Sensitive Groups or worse, 296 were Good, and the year's peak AQI was 102 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 256 of those days. The cleanest month of 2023 was June (median AQI 17, 0 days above 100) and the worst was January (median 48, 1 day above 100, peak 102).
- Good: 81.1%
- Moderate: 18.6%
- Unhealthy for Sensitive Groups: 0.3%
- Unhealthy or worse: 0.0%
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How was Anchorage's air quality in 2023?
Good on a typical day: median AQI 25, with 1 day above AQI 100 out of 365 monitored — the 2nd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2023: 102 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 256 days.
- ✓Cleanest month: June; worst: January.
Frequently asked questions
What was the average AQI in Anchorage in 2023?▾
EPA's Air Quality System puts Anchorage's (Anchorage, AK) median daily AQI for 2023 at 25, which is Good. 1 day were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 102.
Which month had the worst air quality in Anchorage in 2023?▾
The cleanest month of 2023 was June (median AQI 17, 0 days above 100) and the worst was January (median 48, 1 day above 100, peak 102).
Was 2023 a good or bad year for Anchorage's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 2nd cleanest by days above AQI 100. 2023's median of 25 is in line with the area's typical annual median of 27.
Anchorage month by month in 2023
Anchorage air quality month by month, 2023 (Anchorage, AK, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| Januaryworst | 31 | 48 | 1 | 102 | PM2.5 |
| February | 28 | 26 | 0 | 58 | PM2.5 |
| March | 31 | 27 | 0 | 63 | PM2.5 |
| April | 30 | 35 | 0 | 71 | PM10 |
| May | 31 | 24 | 0 | 85 | PM10 |
| Junecleanest | 30 | 17 | 0 | 89 | PM10 |
| July | 31 | 18 | 0 | 33 | PM2.5 |
| August | 31 | 17 | 0 | 51 | PM2.5 |
| September | 30 | 21 | 0 | 54 | PM2.5 |
| October | 31 | 39 | 0 | 66 | PM2.5 |
| November | 30 | 34 | 0 | 83 | PM2.5 |
| December | 31 | 42 | 0 | 68 | PM2.5 |
How 2023 compares
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 2nd cleanest by days above AQI 100.
2023's median of 25 is in line with the area's typical annual median of 27.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Anchorage
The latest EPA AirNow observation puts Anchorage's AQI at 49 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Anchorage air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Anchorage, AK), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.