RANKABLE EPA COUNTY AQI
Webb Air Quality - Texas
EPA county-level evidence, NDS comparative intelligence, and 10 connected ZIP profiles.
Median AQI
48.0
Maximum AQI
115.0
Good-air-quality days
51.64%
Average PM2.5
9.817 ug/m3
NDS Air Quality Score
15.24
U.S. County Rank
991 of 1,049
Percentile
5.34
Grade
F
County status
Webb 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.