Air quality in Louisville
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
US AQI · EPA
122
Unhealthy for Sensitive Groups
PM2.5
12.5 µg/m³
WHO guideline 15
PM10
13.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
2:00 PM
💨
PM2.5 12.5 µg/m³
122Unhealthy for Sensitive Groups
3:00 PM
💨
PM2.5 12 µg/m³
122Unhealthy for Sensitive Groups
4:00 PM
💨
PM2.5 11.8 µg/m³
124Unhealthy for Sensitive Groups
5:00 PM
💨
PM2.5 11.4 µg/m³
122Unhealthy for Sensitive Groups
6:00 PM
💨
PM2.5 11.3 µg/m³
120Unhealthy for Sensitive Groups
7:00 PM
💨
PM2.5 11.4 µg/m³
117Unhealthy for Sensitive Groups
8:00 PM
💨
PM2.5 11.9 µg/m³
106Unhealthy for Sensitive Groups
9:00 PM
💨
PM2.5 13.2 µg/m³
86Moderate
10:00 PM
💨
PM2.5 15 µg/m³
60Moderate
11:00 PM
💨
PM2.5 17.1 µg/m³
62Moderate
12:00 AM
💨
PM2.5 19.8 µg/m³
67Moderate
1:00 AM
💨
PM2.5 21.7 µg/m³
71Moderate
Next few days
daily max · US EPA AQI
Thu
💨
Unhealthy for Sensitive Groups · UV Very high
138
Fri
💨
Unhealthy for Sensitive Groups · UV Very high
144
Sat
💨
Moderate · UV Very high
100
Sun
💨
Moderate · UV Very high
65