Spokane Air Quality in 2024
In 2024, Spokane's air quality (Spokane-Spokane Valley, WA area) had a median daily AQI of 44 (Good) across 366 monitored days. 1 day (0.3%) reached Unhealthy for Sensitive Groups or worse, 232 were Good, and the year's peak AQI was 106 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 229 of those days. The cleanest month of 2024 was April (median AQI 22, 0 days above 100) and the worst was November (median 52, 1 day above 100, peak 106).
- Good: 63.4%
- Moderate: 36.3%
- Unhealthy for Sensitive Groups: 0.3%
- Unhealthy or worse: 0.0%
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How was Spokane's air quality in 2024?
Good on a typical day: median AQI 44, with 1 day above AQI 100 out of 366 monitored — the 1st cleanest of 7 years on record for the area.
- ✓Peak AQI in 2024: 106 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 229 days.
- ✓Cleanest month: April; worst: November.
Frequently asked questions
What was the average AQI in Spokane in 2024?▾
EPA's Air Quality System puts Spokane's (Spokane-Spokane Valley, WA) median daily AQI for 2024 at 44, which is Good. 1 day were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 106.
Which month had the worst air quality in Spokane in 2024?▾
The cleanest month of 2024 was April (median AQI 22, 0 days above 100) and the worst was November (median 52, 1 day above 100, peak 106).
Was 2024 a good or bad year for Spokane's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 1st cleanest by days above AQI 100 — the best year on record here. 2024's median of 44 is below the area's typical annual median of 47.
Spokane month by month in 2024
Spokane air quality month by month, 2024 (Spokane-Spokane Valley, WA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 56 | 0 | 87 | PM2.5 |
| February | 29 | 46 | 0 | 66 | PM2.5 |
| March | 31 | 28 | 0 | 53 | PM2.5 |
| Aprilcleanest | 30 | 22 | 0 | 73 | PM2.5 |
| May | 31 | 41 | 0 | 65 | O3 |
| June | 30 | 42 | 0 | 50 | O3 |
| July | 31 | 64 | 0 | 100 | O3 |
| August | 31 | 55 | 0 | 82 | PM2.5 |
| September | 30 | 39 | 0 | 85 | O3 |
| October | 31 | 38 | 0 | 73 | PM2.5 |
| Novemberworst | 30 | 52 | 1 | 106 | PM2.5 |
| December | 31 | 54 | 0 | 74 | PM2.5 |
How 2024 compares
Among the 7 years EPA has published for the area (2019–2025), 2024 ranks 1st cleanest by days above AQI 100 — the best year on record here.
2024's median of 44 is below the area's typical annual median of 47.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Spokane
The latest EPA AirNow observation puts Spokane's AQI at 26 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Spokane air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Spokane-Spokane Valley, WA), 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.