CityFunIndex

Portland, ME · the CityFunIndex

Air quality in Portland

Portland ranks #34 of 134 US cities for clean air, with a clean-air score of 75 — Very Fun. That puts it in the 75th percentile nationally and #1 of 1 in Maine.

clean-air score
75
Very Fun
National rank
#34 of 134
In Maine
#1 of 1
Percentile
75th

The typical city scores 50 for clean air; Portland sits 25 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 Portland

  1. #32 Baltimore, MD 77
  2. #33 Jackson, WY 76
  3. #34 Portland, ME — this page 75
  4. T#35 Nashville, TN 74
  5. T#35 Oakland, CA 74

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 Portland

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