National Data System · Environmental Intelligence · EPA Air Quality
National Data System Air Quality Intelligence
RANKABLE EPA COUNTY AQI

San Diego Air Quality - California

EPA county-level evidence, NDS comparative intelligence, and 176 connected ZIP profiles.

Compare this County
Median AQI
54.0
Maximum AQI
161.0
Good-air-quality days
42.65%
Average PM2.5
7.009 ug/m3
NDS Air Quality Score
25.35
U.S. County Rank
890 of 1,049
Percentile
14.98
Grade
F

County status

San Diego is part of the governed NDS rankable EPA county universe.

Methodology

EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.