St. Joseph County, Indiana
AQI 44 · Good44
Median AQI
74
90th Percentile
127
Max AQI
273
Days with Data
Ranked #24 of 33 counties in Indiana (by median AQI, lower is better)
Monthly Median AQI — 2025
Click a bar to view that month's details
44
Median AQI
74
90th Percentile
127
Max AQI
273
Days with Data
Ranked #24 of 33 counties in Indiana (by median AQI, lower is better)
Click a bar to view that month's details