Anchorage Air Quality in March
Across 2019–2025, Anchorage's March air quality had a median AQI of 32 (Good) over 217 monitored days in the Anchorage, AK area. 0.5% of March days (1 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 66.4% of days. The cleanest March on record here was 2024 (median AQI 23, 0 days above 100) and the worst was 2025 (median 47, 1 day above 100, peak AQI 110).
- Good: 72.4%
- Moderate: 27.2%
- Unhealthy for Sensitive Groups: 0.5%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
Even with good outdoor air in Anchorage, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Anchorage in March?
Good on a typical day: median AQI 32 across 2019–2025, with 0.5% of March days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓72.4% of March days were Good (AQI 0–50), 27.2% Moderate (51–100).
- ✓1 day of 217 reached AQI 101+; the March peak was 110.
- ✓Best March: 2024; worst March: 2025.
Frequently asked questions
What is the air quality like in Anchorage in March?▾
Across 2019–2025, the median daily AQI in Anchorage in March was 32 (Good). 72.4% of days were Good, 27.2% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is March a good time for outdoor exercise in Anchorage?▾
A typical March day in Anchorage sits in the Good range (median AQI 32), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
Which pollutant causes Anchorage's March air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 66.4% of March days in Anchorage. The highest March AQI recorded in 2019–2025 was 110 (Unhealthy for Sensitive Groups), in 2025.
Anchorage March air quality, year by year
Anchorage March air quality by year (Anchorage, AK, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 33 | 0 | 72 | PM2.5 |
| 2020 | 31 | 36 | 0 | 57 | PM2.5 |
| 2021 | 31 | 37 | 0 | 61 | PM2.5 |
| 2022 | 31 | 29 | 0 | 74 | PM2.5 |
| 2023 | 31 | 27 | 0 | 63 | PM2.5 |
| 2024cleanest | 31 | 23 | 0 | 58 | PM2.5 |
| 2025worst | 31 | 47 | 1 | 110 | PM10 |
What March air means in Anchorage
A typical March day in Anchorage sits in the Good range (median AQI 32), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
March's median AQI of 32 is above Anchorage's whole-year median of 27, making it one of the area's dirtier periods. Nationally, the median March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Anchorage runs below the national March norm; 0.5% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Anchorage's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Anchorage
The latest EPA AirNow observation puts Anchorage's AQI at 18 (PM10). The figures above are multi-year month 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.