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
AD 728×90

Air Quality Index Trend

48h · 2 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
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
28
6.6 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.56.6 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX6.9
High
AD 300×250
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
2.1 km PM2.5: 10.1 µg/m³
34
Lewiston, Idaho, USA
2.1 km PM2.5: 8.2 µg/m³
42
Lewiston, Idaho, USA
2.1 km PM2.5: 10.1 µg/m³
8
13th St, Clarkston, Washington, USA
3.4 km PM2.5: 1.9 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
24
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 5.8 µg/m³
26
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 6.2 µg/m³
25
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 6.0 µg/m³
27
Lapwai_trex, Idaho, USA
16.4 km PM2.5: 6.5 µg/m³

What cities are near Lewiston?

28 Lewiston Orchards 24 Moscow 24 Pullman 5 Walla Walla 10 Opportunity 8 Spokane Valley 12 Coeur d'Alene 8 Spokane 6 Post Falls 10 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 2026-06-08T19:32 UTC.