Air Quality in Lewiston, United States
Drizzle
16.4°C · 76.2% humidity
16.4°
Feels 16.4°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
3
10am
3
4
18
1pm
14
11
9
4pm
7
6
5
7pm
4
5
5
10pm
5
3
3
1am
3
3
3
4am
3
4
4
7am
4
3
Station readings
22h ago
AQI 3
PM2.5 0.7 µg/m³ · 22h ago
Air Quality Index Trend
48h · 3 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.
76.2%
Humidity
13.3 km/h
Wind WNW
1010.7 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
4.27 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Lewiston?
Temperature & Precipitation
PM2.5 Trend
48h · 3 stationsPM2.54.27 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (2 stations within 25 km)
4.27
Median
3.85
Average
2.9
Low
4.8
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +1.5
What is the 7-day forecast for Lewiston?
06-08
18.1° 15.0°
12.87 mm
06-09
20.3° 10.8°
0.31 mm
06-10
20.2° 8.3°
06-11
23.0° 10.4°
06-12
23.6° 12.0°
0.56 mm
06-13
28.1° 8.5°
06-14
26.1° 13.6°
0.75 mm
Both models agree
Avg diff: 3.5°C
Where are air quality stations near Lewiston?
10
Lewiston, Idaho, USA
34
Lewiston, Idaho, USA
49
Lewiston, Idaho, USA
10
13th St, Clarkston, Washington, USA
39
13th St, Clarkston, Washington, USA
10
13th St, Clarkston, Washington, USA
20
Lapwai_trex, Idaho, USA
24
Lapwai_trex, Idaho, USA
28
Lapwai_trex, Idaho, USA
20
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 2026-06-08T20:43 UTC.