What is the air quality in Lewiston today?

The current Air Quality Index (AQI) in Lewiston is 31 (Good). PM2.5 concentration is 7.4 µg/m³.

What is the temperature in Lewiston right now?

The current temperature in Lewiston is 7.4°C (feels like 4.9°C). Humidity is 85.5% and wind speed is 13.6 km/h.

Is it safe to go outside in Lewiston?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Lewiston, United States

Cloudy

7.4°C · 85.5% humidity

7.4°

Feels 4.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

25 5am

31 8am

27 11am

25 2pm

24 5pm

24 8pm

24 11pm

24 2am

Air Quality Index Trend

45h · 2 stn

View full history →

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. Current PM2.5 concentration in Lewiston is 1.5× the WHO annual guideline of 5 µg/m³.

85.5%

Humidity

13.6 km/h

Wind E

1020.1 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.4 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

45h · 2 stations

PM2.57.4 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

7.4

Median

7.4

Average

7.4

Low

7.4

High

PM2.5 µg/m³ · Model: 6.0 · Bias: -1.4

What is the 7-day forecast for Lewiston?

05-29

25.2° 7.4°

1.13 mm

05-30

19.4° 12.8°

05-31

30.3° 14.9°

06-01

22.7° 5.5°

06-02

26.4° 9.7°

06-03

23.4° 5.3°

0.19 mm

06-04

18.1° 12.7°

0.13 mm

Both models agree Avg diff: 3.8°C

Where are air quality stations near Lewiston?

Lewiston, Idaho, USA

2.1 km PM2.5: 4.3 µg/m³

Lewiston, Idaho, USA

2.1 km PM2.5: 8.6 µg/m³

Lewiston, Idaho, USA

2.1 km PM2.5: 3.8 µg/m³

13th St, Clarkston, Washington, USA

3.4 km PM2.5: 0.5 µg/m³

13th St, Clarkston, Washington, USA

3.4 km PM2.5: 1.4 µg/m³

13th St, Clarkston, Washington, USA

3.4 km PM2.5: 4.8 µg/m³

Lapwai_trex, Idaho, USA

16.4 km PM2.5: 5.0 µg/m³

Lapwai_trex, Idaho, USA

16.4 km PM2.5: 3.8 µg/m³

Lapwai_trex, Idaho, USA

16.4 km PM2.5: 2.6 µg/m³

Lapwai_trex, Idaho, USA

16.4 km PM2.5: 3.4 µg/m³

What cities are near Lewiston?

31 Lewiston Orchards 16 Moscow 16 Pullman 19 Walla Walla 15 Opportunity 15 Spokane Valley 15 Coeur d'Alene 15 Spokane 14 Post Falls 19 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 2026-05-29T15:01 UTC.