Air quality in Pierre
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
8.1 µg/m³
WHO guideline 15
PM10
8.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 8.1 µg/m³
45Good
2:00 PM
💨
PM2.5 8.1 µg/m³
48Good
3:00 PM
💨
PM2.5 8.3 µg/m³
49Good
4:00 PM
💨
PM2.5 8.6 µg/m³
49Good
5:00 PM
💨
PM2.5 9.1 µg/m³
48Good
6:00 PM
💨
PM2.5 9.5 µg/m³
45Good
7:00 PM
💨
PM2.5 9.9 µg/m³
43Good
8:00 PM
💨
PM2.5 10.4 µg/m³
43Good
9:00 PM
💨
PM2.5 11 µg/m³
46Good
10:00 PM
💨
PM2.5 11.1 µg/m³
46Good
11:00 PM
💨
PM2.5 10.9 µg/m³
45Good
12:00 AM
💨
PM2.5 10.7 µg/m³
45Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
57
Fri
💨
Moderate · UV High
52
Sat
💨
Good · UV Very high
23