What is the air quality in Lewiston today?

The current Air Quality Index (AQI) in Lewiston is 25 (Good). PM2.5 concentration is 6.0 µg/m³.

What is the temperature in Lewiston right now?

The current temperature in Lewiston is 18.6°C (feels like 18.6°C). Humidity is 61.5% and wind speed is 17.3 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

Partly Cloudy

18.6°C · 61.5% humidity

18.6°

Feels 18.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

24 3am

25 6am

25 9am

25 12pm

25 3pm

27 6pm

34 9pm

54 12am

Air Quality Index Trend

21h · 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.

61.5%

Humidity

17.3 km/h

Wind NW

1013.3 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

21h · 1 station

PM2.56.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

6.0

Median

6.0

Average

6.0

Low

6.0

High

PM2.5 µg/m³ · Model: 5.9 · Bias: -0.1

What is the 7-day forecast for Lewiston?

06-09

28.8° 12.7°

06-10

16.9° 11.0°

1.37 mm

06-11

25.0° 7.4°

06-12

18.7° 16.1°

0.06 mm

06-13

26.2° 13.0°

32.25 mm

06-14

24.1° 8.4°

2.06 mm

06-15

26.3° 13.2°

0.25 mm

Both models agree Avg diff: 6.4°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: 6.0 µg/m³

What cities are near Lewiston?

31 Westbrook 31 Portland 31 South Portland 28 South Portland Gardens 27 West Scarborough 28 Waterville 19 Saco 19 Biddeford 13 Laconia 30 Bangor

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-06-09T10:47 UTC.