Air quality in Granite City
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
9 µg/m³
WHO guideline 15
PM10
9.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 9 µg/m³
61Moderate
2:00 PM
💨
PM2.5 9.3 µg/m³
78Moderate
3:00 PM
💨
PM2.5 9.5 µg/m³
88Moderate
4:00 PM
💨
PM2.5 9.8 µg/m³
88Moderate
5:00 PM
💨
PM2.5 10.1 µg/m³
78Moderate
6:00 PM
💨
PM2.5 10.2 µg/m³
60Moderate
7:00 PM
💨
PM2.5 11.1 µg/m³
47Good
8:00 PM
💨
PM2.5 13.4 µg/m³
54Moderate
9:00 PM
💨
PM2.5 15.6 µg/m³
58Moderate
10:00 PM
💨
PM2.5 17.5 µg/m³
62Moderate
11:00 PM
💨
PM2.5 19.3 µg/m³
66Moderate
12:00 AM
💨
PM2.5 23 µg/m³
74Moderate
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Very high
88
Wed
💨
Unhealthy · UV Very high
171
Thu
💨
Moderate · UV High
56
Fri
💨
Moderate · UV Very high
75
Sat
💨
Good · UV Very high
28