Anchorage Air Quality in 2019
In 2019, Anchorage's air quality (Anchorage, AK area) had a median daily AQI of 37 (Good) across 365 monitored days. 12 days (3.3%) reached Unhealthy for Sensitive Groups or worse, 233 were Good, and the year's peak AQI was 163 (Unhealthy). Fine particulate matter (PM2.5) set the daily AQI on 294 of those days. The cleanest month of 2019 was November (median AQI 25, 0 days above 100) and the worst was August (median 53, 5 days above 100, peak 163).
- Good: 63.8%
- Moderate: 32.9%
- Unhealthy for Sensitive Groups: 2.2%
- Unhealthy or worse: 1.1%
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How was Anchorage's air quality in 2019?
Good on a typical day: median AQI 37, with 12 days above AQI 100 out of 365 monitored — the 7th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2019: 163 (Unhealthy).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 294 days.
- ✓Cleanest month: November; worst: August.
Frequently asked questions
What was the average AQI in Anchorage in 2019?▾
EPA's Air Quality System puts Anchorage's (Anchorage, AK) median daily AQI for 2019 at 37, which is Good. 12 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 163.
Which month had the worst air quality in Anchorage in 2019?▾
The cleanest month of 2019 was November (median AQI 25, 0 days above 100) and the worst was August (median 53, 5 days above 100, peak 163).
Was 2019 a good or bad year for Anchorage's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 7th cleanest by days above AQI 100 — the worst year on record here. 2019's median of 37 is above the area's typical annual median of 27.
Anchorage month by month in 2019
Anchorage air quality month by month, 2019 (Anchorage, AK, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 58 | 0 | 95 | PM2.5 |
| February | 28 | 56 | 0 | 74 | PM2.5 |
| March | 31 | 33 | 0 | 72 | PM2.5 |
| April | 30 | 33 | 1 | 107 | PM10 |
| May | 31 | 27 | 1 | 116 | PM2.5 |
| June | 30 | 29 | 1 | 136 | PM2.5 |
| July | 31 | 60 | 4 | 127 | PM2.5 |
| Augustworst | 31 | 53 | 5 | 163 | PM2.5 |
| September | 30 | 28 | 0 | 53 | PM2.5 |
| October | 31 | 28 | 0 | 97 | PM2.5 |
| Novembercleanest | 30 | 25 | 0 | 75 | PM2.5 |
| December | 31 | 44 | 0 | 91 | PM2.5 |
How 2019 compares
Among the 7 years EPA has published for the area (2019–2025), 2019 ranks 7th cleanest by days above AQI 100 — the worst year on record here.
2019's median of 37 is above 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.