RANKABLE EPA COUNTY AQI
Cass Air Quality - Nebraska
EPA county-level evidence, NDS comparative intelligence, and 20 connected ZIP profiles.
Median AQI
20.0
Maximum AQI
64.0
Good-air-quality days
96.53%
Average PM2.5
N/A
NDS Air Quality Score
87.47
U.S. County Rank
70 of 1,049
Percentile
93.42
Grade
A
County status
Cass 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.