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
106
Unhealthy for Sensitive Groups
PM2.5
8.7 µg/m³
WHO guideline 15
PM10
10.6 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
3:00 PM
💨
PM2.5 8.7 µg/m³
106Unhealthy for Sensitive Groups
4:00 PM
💨
PM2.5 9 µg/m³
106Unhealthy for Sensitive Groups
5:00 PM
💨
PM2.5 9.2 µg/m³
104Unhealthy for Sensitive Groups
6:00 PM
💨
PM2.5 10.2 µg/m³
96Moderate
7:00 PM
💨
PM2.5 10.2 µg/m³
76Moderate
8:00 PM
💨
PM2.5 12.2 µg/m³
51Moderate
9:00 PM
💨
PM2.5 13.4 µg/m³
54Moderate
10:00 PM
💨
PM2.5 13.3 µg/m³
54Moderate
11:00 PM
💨
PM2.5 13.2 µg/m³
53Moderate
12:00 AM
💨
PM2.5 13 µg/m³
53Moderate
1:00 AM
💨
PM2.5 12.9 µg/m³
53Moderate
2:00 AM
💨
PM2.5 12.3 µg/m³
51Moderate
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV Very high
106
Thu
💨
Unhealthy for Sensitive Groups · UV Very high
113
Fri
💨
Moderate · UV Very high
76
Sat
💨
Moderate · UV Very high
60