South Cle Elum, Washington Air Quality
South Cle Elum has a median AQI of 22, earning an air quality grade of A+ — excellent air quality that ranks better than 92% of US cities. Air quality has remained relatively stable over the past decade. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, South Cle Elum recorded 206 good air quality days (85% of monitored days).
Population: 579 • County: Kittitas
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Quick Facts
| Current AQI | 26 — Good |
| Air Quality Grade | A+ |
| Median AQI (2025) | 22 |
| vs. U.S. Cities | Better than 92% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About South Cle Elum Air Quality
What is the air quality in South Cle Elum today?
The current AQI in South Cle Elum is 26, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in South Cle Elum getting better or worse?
Air quality in South Cle Elum has remained relatively stable over the past decade, with a median AQI of around 22.
What is the most common air pollutant in South Cle Elum?
PM2.5 is the primary air pollutant in South Cle Elum, responsible for the most air quality-impacted days in 2025. Particulate matter can originate from vehicle exhaust, wildfires, and industrial emissions.
How many unhealthy air days does South Cle Elum have per year?
In 2025, South Cle Elum had 0 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 206 good days and 37 moderate days out of 243 days monitored.
What air quality grade does South Cle Elum receive?
South Cle Elum receives an air quality grade of A+, placing it better than 92% of US cities. This grade is based on a median AQI of 22 for 2025, derived from EPA monitoring data.
Air Quality Grade
Better than 92% of US cities
Nearby Cities
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National Rankings
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Best Air Quality Cities →All city rankingsRecommended Air Purifiers for South Cle Elum
Based on your area's air quality (median AQI: 22), we recommend these air purifiers to help protect your health indoors.
RabbitAir MinusA2
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Other Great Options
Molekule Air Pro
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Blueair Blue Pure 211+
High performance for large rooms with simple operation.
Dyson Pure Cool TP04
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