CityFunIndex

Aspen, CO · the CityFunIndex

Air quality in Aspen

Aspen ranks #49 of 134 US cities for clean air, with a clean-air score of 64 — Fun. That puts it in the 64th percentile nationally and #2 of 6 in Colorado.

clean-air score
64
Fun
National rank
#49 of 134
In Colorado
#2 of 6
Percentile
64th

The typical city scores 50 for clean air; Aspen sits 14 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 Aspen

  1. T#47 Santa Clarita, CA 65
  2. T#47 Washington, DC 65
  3. #49 Aspen, CO — this page 64
  4. #50 Baton Rouge, LA 63
  5. #51 Buffalo, NY 62

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 Aspen

Aspen scores 67 overall (Fun) on the CityFunIndex. Its strongest factors: