Anchorage Air Quality in July
Across 2019–2025, Anchorage's July air quality had a median AQI of 18 (Good) over 217 monitored days in the Anchorage, AK area. 1.8% of July days (4 of 217) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 72.8% of days. The cleanest July on record here was 2025 (median AQI 15, 0 days above 100) and the worst was 2019 (median 60, 4 days above 100, peak AQI 127).
- Good: 88.9%
- Moderate: 9.2%
- Unhealthy for Sensitive Groups: 1.8%
- Unhealthy or worse: 0.0%
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How is the air in Anchorage in July?
Good on a typical day: median AQI 18 across 2019–2025, with 1.8% of July days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓88.9% of July days were Good (AQI 0–50), 9.2% Moderate (51–100).
- ✓4 days of 217 reached AQI 101+; the July peak was 127.
- ✓Best July: 2025; worst July: 2019.
Frequently asked questions
What is the air quality like in Anchorage in July?▾
Across 2019–2025, the median daily AQI in Anchorage in July was 18 (Good). 88.9% of days were Good, 9.2% Moderate, and 1.8% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is July a good time for outdoor exercise in Anchorage?▾
A typical July day in Anchorage sits in the Good range (median AQI 18), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 56 of July days (1.8%) reached AQI 101+ in 2019–2025.
Which pollutant causes Anchorage's July air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 72.8% of July days in Anchorage. The highest July AQI recorded in 2019–2025 was 127 (Unhealthy for Sensitive Groups), in 2019.
Anchorage July air quality, year by year
Anchorage July air quality by year (Anchorage, AK, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019worst | 31 | 60 | 4 | 127 | PM2.5 |
| 2020 | 31 | 18 | 0 | 52 | PM2.5 |
| 2021 | 31 | 25 | 0 | 58 | PM2.5 |
| 2022 | 31 | 17 | 0 | 42 | PM2.5 |
| 2023 | 31 | 18 | 0 | 33 | PM2.5 |
| 2024 | 31 | 18 | 0 | 34 | PM2.5 |
| 2025cleanest | 31 | 15 | 0 | 34 | PM10 |
What July air means in Anchorage
A typical July day in Anchorage sits in the Good range (median AQI 18), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 56 of July days (1.8%) reached AQI 101+ in 2019–2025.
July's median AQI of 18 is below Anchorage's whole-year median of 27, making it one of the area's cleaner periods. Nationally, the median July AQI across every EPA metro area (103,858 metro-days, 2019–2025) is 47, so Anchorage runs below the national July norm; 1.8% of its July days topped AQI 100 versus 3.6% nationally (below average).
July is part of Anchorage's summer season (June, July, August); the summer 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.