CityFunIndex

Seattle, WA · the CityFunIndex

Air quality in Seattle

Seattle ranks #21 of 134 US cities for clean air, with a clean-air score of 85 — Exceptional. That puts it in the 85th percentile nationally and #1 of 2 in Washington.

clean-air score
85
Exceptional
National rank
#21 of 134
In Washington
#1 of 2
Percentile
85th

The typical city scores 50 for clean air; Seattle sits 35 points above the median.

How air quality is measured

Recent particulate matter and ozone levels — a trailing-week air-quality average.

The clean-air score is the flip side of our air quality measure — 100 minus the raw air quality score — so a city with less of it scores higher.

Data sources: EPA AirNow and OpenAQ pollution readings (seven-day trailing average).

Full methodology → Glossary The raw measurement is part of the Data plan →

Ranked around Seattle

  1. T#19 Hilton Head Island, SC 86
  2. T#19 Savannah, GA 86
  3. #21 Seattle, WA — this page 85
  4. #22 Hartford, CT 84
  5. T#23 Manchester, NH 83

See the full leaderboard — Cities with the cleanest air →

Top US cities for clean air

  1. #1 Anchorage, AK 100
  2. #2 Bend, OR 99
  3. T#3 Lubbock, TX 98
  4. T#3 Telluride, CO 98
  5. #5 Montgomery, AL 97

More about Seattle

Seattle scores 100 overall (Exceptional) on the CityFunIndex. Its strongest factors: