Air Quality in Lewiston, United States
Drizzle
16.4°C · 76.2% humidity
16.4°
Feels 16.4°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
3
9am
3
3
28
12pm
20
15
12
3pm
9
8
6
6pm
5
5
5
9pm
5
5
3
12am
3
3
3
3am
3
3
4
6am
4
4
Station readings
21h ago
AQI 3
PM2.5 0.7 µg/m³ · 21h ago
Air Quality Index Trend
48h · 2 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
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.6 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Lewiston?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.56.6 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
Station readings (2 stations within 25 km)
6.6
Median
6.6
Average
4.8
Low
8.4
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -0.7
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?
42
Lewiston, Idaho, USA
34
Lewiston, Idaho, USA
42
Lewiston, Idaho, USA
8
13th St, Clarkston, Washington, USA
39
13th St, Clarkston, Washington, USA
10
13th St, Clarkston, Washington, USA
24
Lapwai_trex, Idaho, USA
26
Lapwai_trex, Idaho, USA
25
Lapwai_trex, Idaho, USA
27
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 2026-06-08T19:32 UTC.