Air quality in Lewiston
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
11.5 µg/m³
WHO guideline 15
PM10
11.6 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 PM
💨
PM2.5 11.5 µg/m³
48Good
8:00 PM
💨
PM2.5 9.9 µg/m³
44Good
9:00 PM
💨
PM2.5 7.2 µg/m³
44Good
10:00 PM
💨
PM2.5 6.6 µg/m³
45Good
11:00 PM
💨
PM2.5 6.7 µg/m³
46Good
12:00 AM
💨
PM2.5 7 µg/m³
45Good
1:00 AM
💨
PM2.5 7.3 µg/m³
43Good
2:00 AM
💨
PM2.5 7.6 µg/m³
41Good
3:00 AM
💨
PM2.5 8.5 µg/m³
38Good
4:00 AM
💨
PM2.5 9.3 µg/m³
39Good
5:00 AM
💨
PM2.5 10.2 µg/m³
43Good
6:00 AM
💨
PM2.5 11 µg/m³
46Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
71
Thu
💨
Moderate · UV Moderate
86
Fri
💨
Moderate · UV High
69
Sat
💨
Moderate · UV High
56
Sun
💨
Moderate · UV High
56