RANKABLE EPA COUNTY AQI
Smith Air Quality - Texas
EPA county-level evidence, NDS comparative intelligence, and 23 connected ZIP profiles.
Median AQI
35.0
Maximum AQI
93.0
Good-air-quality days
92.18%
Average PM2.5
N/A
NDS Air Quality Score
70.81
U.S. County Rank
228 of 1,049
Percentile
78.24
Grade
B
County status
Smith 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.