Air Quality in Lewiston, United States

Clear
29.6°C · 16.8% humidity
29.6°
Feels 29.6°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
85 10am
85
85
27 1pm
43
55
64 4pm
70
76
79 7pm
81
83
84 10pm
85
86
86 1am
86
86
87 4am
87
206
206 7am
206
206
Station readings
115
79
87
CAMS model adj +60
25
25
25
25
25
25
25
25
27
27
27
27
27
27
27
27
27
27
27
27
146
146
146
146
AD 728×90

Air Quality Index Trend

21h · 1 stn

Lewiston'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
22.5 km/h
Wind WSW
1009.6 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
27
6.45 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

21h · 1 station
PM2.56.45 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
AD 300×250
Station readings (3 stations within 25 km)
6.45
Median
16.73
Average
3.6
Low
34.0
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -0.4

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?

30
Lewiston, Idaho, USA
2.1 km PM2.5: 7.2 µg/m³
27
Lewiston, Idaho, USA
2.1 km PM2.5: 6.5 µg/m³
13
Lewiston, Idaho, USA
2.1 km PM2.5: 3.1 µg/m³
40
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 9.6 µg/m³
59
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 15.9 µg/m³
59
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 15.9 µg/m³
45
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 10.8 µg/m³
63
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 17.8 µg/m³
70
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 21.1 µg/m³
30
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 7.2 µg/m³

What cities are near Lewiston?

27 Lewiston Orchards 87 Moscow 102 Pullman 108 Walla Walla 78 Opportunity 79 Spokane Valley 25 Coeur d'Alene 82 Spokane 75 Post Falls 98 Pendleton
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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 2026-07-21T20:50 UTC.