What is the air quality in Lewiston today?

The current Air Quality Index (AQI) in Lewiston is 30 (Good). PM2.5 concentration is 7.2 µg/m³.

What is the temperature in Lewiston right now?

The current temperature in Lewiston is 20.8°C (feels like 20.8°C). Humidity is 85.1% and wind speed is 20.0 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

Rain

20.8°C · 85.1% humidity

20.8°

Feels 20.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

24 6pm

30 9pm

26 12am

25 3am

24 6am

24 9am

24 12pm

24 3pm

Air Quality Index Trend

36h · 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.

85.1%

Humidity

20.0 km/h

Wind W

1006.9 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.2 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Lewiston?

Temperature & Precipitation

PM2.5 Trend

36h · 1 station

PM2.57.2 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (1 station within 25 km)

7.2

Median

7.2

Average

7.2

Low

7.2

High

PM2.5 µg/m³ · Model: 5.9 · Bias: -1.3

What is the 7-day forecast for Lewiston?

05-30

20.8° 7.4°

20.69 mm

05-31

23.8° 8.0°

5.31 mm

06-01

21.3° 8.3°

06-02

20.2° 10.3°

2.0 mm

06-03

28.5° 11.7°

06-04

20.6° 18.1°

0.5 mm

06-05

23.8° 10.0°

6.13 mm

Both models agree Avg diff: 4.8°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: 4.1 µg/m³

Lewiston, Maine, USA

1.2 km PM2.5: 4.1 µg/m³

What cities are near Lewiston?

35 Westbrook 35 Portland 35 South Portland 31 South Portland Gardens 29 West Scarborough 29 Waterville 23 Saco 23 Biddeford 20 Laconia 9 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 2026-05-30T01:35 UTC.