RANKABLE EPA COUNTY AQI
Merced Air Quality - California
EPA county-level evidence, NDS comparative intelligence, and 23 connected ZIP profiles.
Median AQI
43.0
Maximum AQI
78.0
Good-air-quality days
64.44%
Average PM2.5
7.768 ug/m3
NDS Air Quality Score
46.63
U.S. County Rank
617 of 1,049
Percentile
41.03
Grade
C
County status
Merced is part of the governed NDS rankable EPA county universe.
Connected ZIP codes
Methodology
EPA AQI evidence used here is county-derived. ZIP profiles connect to this evidence through the governed NDS geography relationship.