What is the air quality in Lewiston today?

The current Air Quality Index (AQI) in Lewiston is 13 (Good). PM2.5 concentration is 3.2 µg/m³.

What is the temperature in Lewiston right now?

The current temperature in Lewiston is 16.1°C (feels like 16.1°C). Humidity is 73.3% and wind speed is 17.2 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

16.1°C · 73.3% humidity

16.1°

Feels 16.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

54 6pm

13 9pm

22 12am

22 3am

23 6am

24 9am

24 12pm

24 3pm

Air Quality Index Trend

31h · 1 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.

73.3%

Humidity

17.2 km/h

Wind NNE

1016.1 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

3.2 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

31h · 1 station

PM2.53.2 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (2 stations within 25 km)

3.2

Median

3.2

Average

2.6

Low

3.8

High

PM2.5 µg/m³ · Model: 10.0 · Bias: +6.8

What is the 7-day forecast for Lewiston?

07-22

21.3° 15.4°

0.69 mm

07-23

27.0° 18.2°

0.31 mm

07-24

25.4° 14.3°

3.13 mm

07-25

26.7° 17.8°

4.63 mm

07-26

21.8° 16.7°

0.81 mm

07-27

28.5° 16.3°

07-28

34.2° 18.6°

1.06 mm

Both models agree Avg diff: 2.7°C

Where are air quality stations near Lewiston?

Lewiston (ME DEP - LCKP)

1.2 km PM2.5: 10.0 µg/m³

Lewiston, Maine, USA

1.2 km PM2.5: 2.6 µg/m³

Lewiston, Maine, USA

1.2 km PM2.5: 2.6 µg/m³

Lewiston, Maine, USA

1.2 km PM2.5: 4.6 µg/m³

What cities are near Lewiston?

15 Westbrook 15 Portland 15 South Portland 20 South Portland Gardens 23 West Scarborough 27 Waterville 30 Saco 29 Biddeford 51 Laconia 26 Bangor

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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 2026-07-22T01:18 UTC.