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
18.6 µg/m³
WHO guideline 15
PM10
19.1 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
2:00 AM
💨
PM2.5 18.6 µg/m³
65 Moderate
3:00 AM
💨
PM2.5 17 µg/m³
61 Moderate
4:00 AM
💨
PM2.5 15.6 µg/m³
58 Moderate
5:00 AM
💨
PM2.5 14.4 µg/m³
56 Moderate
6:00 AM
💨
PM2.5 13.4 µg/m³
54 Moderate
7:00 AM
💨
PM2.5 12.5 µg/m³
52 Moderate
8:00 AM
💨
PM2.5 11.5 µg/m³
48 Good
9:00 AM
💨
PM2.5 10.4 µg/m³
43 Good
10:00 AM
💨
PM2.5 9.8 µg/m³
41 Good
11:00 AM
💨
PM2.5 9.6 µg/m³
40 Good
12:00 PM
💨
PM2.5 9.3 µg/m³
39 Good
1:00 PM
💨
PM2.5 9.5 µg/m³
40 Good
Next few days daily max · US EPA AQI
Thu
💨
Moderate · UV Low
81
Fri
💨
Moderate · UV Low
72
Sun
💨
Moderate · UV Moderate
52
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain