Spokane Air Quality in Spring
Across 2019–2025, Spokane's spring (March–May) air quality had a median AQI of 40 (Good) over 644 monitored days in the Spokane-Spokane Valley, WA area. 0.2% of spring days (1 of 644) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 55.3% of days. The cleanest spring on record here was 2024 (median AQI 34, 0 days above 100) and the worst was 2022 (median 38, 1 day above 100, peak AQI 103).
- Good: 79.7%
- Moderate: 20.2%
- Unhealthy for Sensitive Groups: 0.2%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
Even with good outdoor air in Spokane, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
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How is the air in Spokane in spring?
Good on a typical day: median AQI 40 across 2019–2025, with 0.2% of spring days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓79.7% of spring days were Good (AQI 0–50), 20.2% Moderate (51–100).
- ✓1 day of 644 reached AQI 101+; the spring peak was 103.
- ✓Cleanest month: May; worst month: April.
Frequently asked questions
What is the air quality like in Spokane in spring?▾
Across 2019–2025, the median daily AQI in Spokane in spring was 40 (Good). 79.7% of days were Good, 20.2% Moderate, and 0.2% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is spring a good time for outdoor exercise in Spokane?▾
A typical spring day in Spokane sits in the Good range (median AQI 40), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.
Which pollutant causes Spokane's spring air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 55.3% of spring days in Spokane. The highest spring AQI recorded in 2019–2025 was 103 (Unhealthy for Sensitive Groups), in 2022.
Spokane spring air quality, year by year
Spokane spring air quality by year (Spokane-Spokane Valley, WA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 43 | 0 | 81 | PM2.5 |
| 2020 | 92 | 38 | 0 | 62 | PM2.5 |
| 2021 | 92 | 44 | 0 | 70 | PM2.5 |
| 2022worst | 92 | 38 | 1 | 103 | O3 |
| 2023 | 92 | 44 | 0 | 81 | PM2.5 |
| 2024cleanest | 92 | 34 | 0 | 73 | PM2.5 |
| 2025 | 92 | 36 | 0 | 71 | PM2.5 |
What spring air means in Spokane
A typical spring day in Spokane sits in the Good range (median AQI 40), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.
Spring's median AQI of 40 is below Spokane's whole-year median of 47, making it one of the area's cleaner periods. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Spokane runs in line with the national Spring norm; 0.2% of its Spring days topped AQI 100 versus 0.8% nationally (about the same).
Within the season, May is the cleanest month (median AQI 42, 0.0% of days above 100) and April the worst (median 34, 0.5% above 100).
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 season 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.