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
4.1 µg/m³
WHO guideline 15
PM10
4.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 AM
💨
PM2.5 4.1 µg/m³
40Good
1:00 AM
💨
PM2.5 4.2 µg/m³
38Good
2:00 AM
💨
PM2.5 4.5 µg/m³
36Good
3:00 AM
💨
PM2.5 4.9 µg/m³
34Good
4:00 AM
💨
PM2.5 5.4 µg/m³
32Good
5:00 AM
💨
PM2.5 6.1 µg/m³
30Good
6:00 AM
💨
PM2.5 6.5 µg/m³
28Good
7:00 AM
💨
PM2.5 6.6 µg/m³
28Good
8:00 AM
💨
PM2.5 6.5 µg/m³
28Good
9:00 AM
💨
PM2.5 3.8 µg/m³
35Good
10:00 AM
💨
PM2.5 3 µg/m³
45Good
11:00 AM
💨
PM2.5 5.6 µg/m³
58Moderate
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV Very high
65
Sat
💨
Good · UV Very high
49
Sun
💨
Moderate · UV Very high
70
Mon
💨
Moderate · UV Very high
83
Tue
💨
Moderate · UV Very high
65