Napa, CA · the CityFunIndex
Air quality in Napa
Napa ranks T#11 of 134 US cities for clean air, with a clean-air score of 92 — Exceptional. That puts it in the 93rd percentile nationally and #1 of 18 in California.
- clean-air score
- 92
- Exceptional
- National rank
- T#11 of 134
- In California
- #1 of 18
- Percentile
- 93rd
The typical city scores 50 for clean air; Napa sits 42 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 Napa
- #9 Bridgeport, CT 94
- #10 Asheville, NC 93
- T#11 Napa, CA — this page 92
- #13 Billings, MT 91
- #14 Richmond, VA 90
Top US cities for clean air
More about Napa
Napa scores 52 overall (Fun) on the CityFunIndex. Its strongest factors: