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
7.5 µg/m³
WHO guideline 15
PM10
7.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 7.5 µg/m³
66Moderate
2:00 PM
💨
PM2.5 7.4 µg/m³
71Moderate
3:00 PM
💨
PM2.5 7.4 µg/m³
76Moderate
4:00 PM
💨
PM2.5 7.5 µg/m³
80Moderate
5:00 PM
💨
PM2.5 7.5 µg/m³
76Moderate
6:00 PM
💨
PM2.5 7.5 µg/m³
63Moderate
7:00 PM
💨
PM2.5 8.9 µg/m³
49Good
8:00 PM
💨
PM2.5 11.9 µg/m³
50Good
9:00 PM
💨
PM2.5 13.8 µg/m³
55Moderate
10:00 PM
💨
PM2.5 15 µg/m³
57Moderate
11:00 PM
💨
PM2.5 16.4 µg/m³
60Moderate
12:00 AM
💨
PM2.5 18 µg/m³
63Moderate
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Very high
80
Wed
💨
Moderate · UV Very high
83
Thu
💨
Moderate · UV Very high
76
Fri
💨
Unhealthy for Sensitive Groups · UV Very high
104
Sat
💨
Moderate · UV High
78