Air Quality in Lewiston, United States
Windy
21.0°C · 42.8% humidity
21.0°
Feels 21.0°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Lewiston's air quality — share it
AQI Forecast
25
4pm
25
25
25
7pm
27
27
27
10pm
27
27
27
1am
27
27
27
4am
27
27
27
7am
27
27
27
10am
27
27
27
1pm
27
27
Air Quality Index Trend
18h · 1 stnLewiston's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
42.8%
Humidity
68.9 km/h
Wind NW
1009.3 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Lewiston?
Temperature & Precipitation
PM2.5 Trend
18h · 1 stationPM2.56.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
What is the 7-day forecast for Lewiston?
08-03
21.0° 16.3°
2.25 mm
08-04
36.3° 13.6°
08-05
31.5° 19.4°
8.56 mm
08-06
27.1° 14.8°
2.5 mm
08-07
30.2° 18.1°
7.37 mm
08-08
25.9° 18.0°
08-09
37.1° 17.1°
Both models agree
Avg diff: 4.0°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-07T23:02 UTC.