Air quality in Lewistown
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
10.4 µg/m³
WHO guideline 15
PM10
11 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 AM
💨
PM2.5 10.4 µg/m³
43Good
8:00 AM
💨
PM2.5 10.2 µg/m³
43Good
9:00 AM
💨
PM2.5 9.6 µg/m³
40Good
10:00 AM
💨
PM2.5 7.2 µg/m³
36Good
11:00 AM
💨
PM2.5 7 µg/m³
42Good
12:00 PM
💨
PM2.5 7.3 µg/m³
45Good
1:00 PM
💨
PM2.5 7.5 µg/m³
47Good
2:00 PM
💨
PM2.5 7.6 µg/m³
48Good
3:00 PM
💨
PM2.5 7.6 µg/m³
49Good
4:00 PM
💨
PM2.5 7.6 µg/m³
50Good
5:00 PM
💨
PM2.5 7.6 µg/m³
48Good
6:00 PM
💨
PM2.5 7.7 µg/m³
49Good
Next few days
daily max · US EPA AQI
Thu
💨
Good · UV Moderate
50
Fri
💨
Good · UV Very high
29