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.
PM2.5
2.3 µg/m³
WHO guideline 15
PM10
3 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 PM
💨
PM2.5 2.3 µg/m³
49Good
6:00 PM
💨
PM2.5 3.7 µg/m³
45Good
7:00 PM
💨
PM2.5 4.9 µg/m³
37Good
8:00 PM
💨
PM2.5 6.5 µg/m³
27Good
9:00 PM
💨
PM2.5 7.4 µg/m³
31Good
10:00 PM
💨
PM2.5 7.1 µg/m³
30Good
11:00 PM
💨
PM2.5 6 µg/m³
25Good
12:00 AM
💨
PM2.5 4.8 µg/m³
20Good
1:00 AM
💨
PM2.5 3.9 µg/m³
19Good
2:00 AM
💨
PM2.5 3.6 µg/m³
19Good
3:00 AM
💨
PM2.5 3.5 µg/m³
20Good
4:00 AM
💨
PM2.5 3.5 µg/m³
19Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV Very high
61
Thu
💨
Good · UV Very high
48
Fri
💨
Good · UV Very high
50
Sat
💨
Moderate · UV Very high
63
Sun
💨
Good · UV Very high
30