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
1.8 µg/m³
WHO guideline 15
PM10
1.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 AM
💨
PM2.5 1.8 µg/m³
21Good
8:00 AM
💨
PM2.5 2 µg/m³
22Good
9:00 AM
💨
PM2.5 2.6 µg/m³
24Good
10:00 AM
💨
PM2.5 3.4 µg/m³
26Good
11:00 AM
💨
PM2.5 4.4 µg/m³
29Good
12:00 PM
💨
PM2.5 5.6 µg/m³
34Good
1:00 PM
💨
PM2.5 7.1 µg/m³
39Good
2:00 PM
💨
PM2.5 8.7 µg/m³
43Good
3:00 PM
💨
PM2.5 10.1 µg/m³
47Good
4:00 PM
💨
PM2.5 11 µg/m³
50Good
5:00 PM
💨
PM2.5 11.2 µg/m³
51Moderate
6:00 PM
💨
PM2.5 10.9 µg/m³
47Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Moderate
51
Wed
💨
Moderate · UV High
61
Thu
💨
Moderate · UV High
73
Sat
💨
Good · UV Moderate
25