Air quality in Decatur
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
19.4 µg/m³
WHO guideline 15
PM10
21.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
3:00 AM
💨
PM2.5 19.4 µg/m³
66Moderate
4:00 AM
💨
PM2.5 19.4 µg/m³
66Moderate
5:00 AM
💨
PM2.5 19.7 µg/m³
67Moderate
6:00 AM
💨
PM2.5 20.8 µg/m³
69Moderate
7:00 AM
💨
PM2.5 23.2 µg/m³
74Moderate
8:00 AM
💨
PM2.5 21.4 µg/m³
71Moderate
9:00 AM
💨
PM2.5 19 µg/m³
66Moderate
10:00 AM
💨
PM2.5 17.9 µg/m³
63Moderate
11:00 AM
💨
PM2.5 17.2 µg/m³
62Moderate
12:00 PM
💨
PM2.5 16.6 µg/m³
60Moderate
1:00 PM
💨
PM2.5 16.2 µg/m³
60Moderate
2:00 PM
💨
PM2.5 15.4 µg/m³
58Moderate
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
74
Thu
💨
Moderate · UV Moderate
61
Fri
💨
Moderate · UV High
61
Sat
💨
Moderate · UV Very high
81
Sun
💨
Moderate · UV Very high
61