Air quality in Madison
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
10.2 µg/m³
WHO guideline 15
PM10
10.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 AM
💨
PM2.5 10.2 µg/m³
43Good
2:00 AM
💨
PM2.5 9.6 µg/m³
40Good
3:00 AM
💨
PM2.5 9.1 µg/m³
38Good
4:00 AM
💨
PM2.5 8.8 µg/m³
37Good
5:00 AM
💨
PM2.5 8.5 µg/m³
35Good
6:00 AM
💨
PM2.5 8.1 µg/m³
34Good
7:00 AM
💨
PM2.5 7.8 µg/m³
33Good
8:00 AM
💨
PM2.5 7.5 µg/m³
31Good
9:00 AM
💨
PM2.5 7 µg/m³
39Good
10:00 AM
💨
PM2.5 6 µg/m³
45Good
11:00 AM
💨
PM2.5 5.5 µg/m³
49Good
12:00 PM
💨
PM2.5 5.2 µg/m³
48Good
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV Very high
60
Mon
💨
Moderate · UV Very high
63
Tue
💨
Moderate · UV Very high
88
Wed
💨
Moderate · UV Very high
73
Thu
💨
Moderate · UV High
57