What is the air quality in Leominster today?

The current Air Quality Index (AQI) in Leominster is 25 (Good). PM2.5 concentration is 6.07 µg/m³.

What is the temperature in Leominster right now?

The current temperature in Leominster is 23.7°C (feels like 23.7°C). Humidity is 81.8% and wind speed is 49.0 km/h.

Is it safe to go outside in Leominster?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 1.4 (Low).

Air Quality in Leominster, United States

Drizzle

23.7°C · 81.8% humidity

23.7°

Feels 23.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

24 3pm

25 6pm

27 9pm

25 12am

24 3am

24 6am

24 9am

24 12pm

Air Quality Index Trend

46h · 5 stn

View full history →

Leominster's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

81.8%

Humidity

49.0 km/h

Wind WSW

1009.9 hPa

Pressure

1.4

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.07 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Leominster?

Temperature & Precipitation

PM2.5 Trend

46h · 5 stations

PM2.56.07 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX1.4

Low

What is the 7-day forecast for Leominster?

05-29

19.1° 10.7°

0.13 mm

05-30

23.7° 8.2°

8.0 mm

05-31

25.0° 8.7°

0.62 mm

06-01

23.6° 8.1°

06-02

18.3° 11.3°

06-03

26.5° 14.4°

06-04

22.6° 17.4°

0.25 mm

Both models agree Avg diff: 5.2°C

What cities are near Leominster?

25 Fitchburg 25 Gardner 30 Holden 30 Shrewsbury 30 Marlborough 22 Westford 25 Acton 30 Worcester 26 Sudbury 20 Chelmsford

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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 2026-05-29T22:38 UTC.