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
AD 728×90

Air Quality Index Trend

48h · 3 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.

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▲
18
4.27 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

48h · 3 stations
PM2.54.27 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
AD 300×250
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
2.1 km PM2.5: 2.4 µg/m³
34
Lewiston, Idaho, USA
2.1 km PM2.5: 8.2 µg/m³
49
Lewiston, Idaho, USA
2.1 km PM2.5: 11.8 µg/m³
10
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 2.4 µg/m³
39
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 9.4 µg/m³
10
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 2.4 µg/m³
20
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 4.8 µg/m³
24
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 5.8 µg/m³
28
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 6.7 µg/m³
20
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 4.8 µg/m³

What cities are near Lewiston?

19 Lewiston Orchards 5 Moscow 5 Pullman 5 Walla Walla 10 Opportunity 8 Spokane Valley 12 Coeur d'Alene 6 Spokane 7 Post Falls 9 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 2026-06-08T20:43 UTC.