Air Quality in Leominster, United States

Windy
4.6°C · 64.1% humidity
4.6°
Feels -2.1°
5
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
21 7pm
20
19
19 10pm
31
31
31 1am
31
31
31 4am
44
44
44 7am
31
31
31 10am
44
44
69 1pm
44
44
31 4pm
31
31
Station readings
21
20
CAMS model adj -6
25
25
25
25
37
37
37
37
37
37
50
50
50
37
37
37
50
50
75
50
50
37
37
37
AD 728×90

PM2.5 Trend (24h)

22h · 1 station
64.1%
Humidity
52.7 km/h
Wind SSW
1031.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Leominster?

Temperature & Precipitation

PM2.51.26 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250

What is the 7-day forecast for Leominster?

04-09
12.8° -2.5°
04-10
18.2° 2.0°
04-11
21.3° 6.3°
04-12
17.1° 4.7°
04-13
12.7° 7.3°
1.63 mm
04-14
25.0° 13.8°
0.19 mm
04-15
22.1° 19.1°
0.56 mm
Both models agree Avg diff: 4.3°C

What cities are near Leominster?

5 Fitchburg 1 Gardner 9 Holden 33 Shrewsbury 5 Marlborough 23 Westford 25 Acton 35 Worcester 25 Sudbury 20 Chelmsford

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:18 UTC.