Air Quality in Lewiston, United States
Windy
29.6°C · 16.8% humidity
29.6°
Feels 29.6°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
AQI Forecast
Calibrated
85
11am
85
85
52
2pm
61
68
73
5pm
78
81
83
8pm
84
85
85
11pm
86
86
86
2am
87
87
87
5am
206
206
206
8am
206
206
Station readings
115
79
87
CAMS model
adj +60
25
25
25
25
25
25
25
27
27
27
27
27
27
27
27
27
27
27
27
146
146
146
146
146
Air Quality Index Trend
21h · 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.
16.8%
Humidity
80.9 km/h
Wind WNW
1005.1 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
12.6 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Lewiston?
Temperature & Precipitation
PM2.5 Trend
21h · 1 stationPM2.512.6 µg/m³
✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
Station readings (1 station within 25 km)
12.6
Median
12.6
Average
12.6
Low
12.6
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -6.6
What is the 7-day forecast for Lewiston?
07-21
37.1° 17.6°
07-22
33.8° 19.2°
0.06 mm
07-23
40.2° 20.1°
07-24
42.2° 18.4°
07-25
33.6° 19.9°
07-26
41.3° 13.3°
07-27
34.1° 21.3°
Both models agree
Avg diff: 3.4°C
Where are air quality stations near Lewiston?
13
Lewiston, Idaho, USA
30
Lewiston, Idaho, USA
27
Lewiston, Idaho, USA
40
13th St, Clarkston, Washington, USA
59
13th St, Clarkston, Washington, USA
59
13th St, Clarkston, Washington, USA
45
Lapwai_trex, Idaho, USA
63
Lapwai_trex, Idaho, USA
70
Lapwai_trex, Idaho, USA
30
Lapwai_trex, Idaho, USA
What cities are near Lewiston?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T21:07 UTC.