RANKABLE EPA COUNTY AQI
St. Tammany Air Quality - Louisiana
EPA county-level evidence, NDS comparative intelligence, and 22 connected ZIP profiles.
Median AQI
38.0
Maximum AQI
105.0
Good-air-quality days
84.87%
Average PM2.5
N/A
NDS Air Quality Score
63.16
U.S. County Rank
350 of 1,049
Percentile
66.60
Grade
C
County status
St. Tammany 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.