What is the air quality in Fitchburg today?

The current Air Quality Index (AQI) in Fitchburg is 21 (Good). PM2.5 concentration is 5.09 µg/m³.

What is the temperature in Fitchburg right now?

The current temperature in Fitchburg is 4.8°C (feels like -0.9°C). Humidity is 66.3% and wind speed is 40.0 km/h.

Is it safe to go outside in Fitchburg?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Fitchburg, United States

Partly Cloudy

4.8°C · 66.3% humidity

4.8°

Feels -0.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

38h · 4 stn

View full history →

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

66.3%

Humidity

40.0 km/h

Wind W

1021.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.09 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Fitchburg?

Temperature & Precipitation

PM2.5 Trend

38h · 4 stations

PM2.55.09 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for Fitchburg?

10-21

18.2° 4.1°

10-22

17.1° 4.1°

8.25 mm

10-23

13.8° 3.5°

0.06 mm

10-24

10.7° 7.5°

10-25

20.0° 5.9°

50.0 mm

10-26

10.1° 3.3°

2.31 mm

10-27

8.9° 1.3°

0.5 mm

Both models agree Avg diff: 4.2°C

What cities are near Fitchburg?

21 Leominster 21 Gardner 21 Holden 22 Westford 21 Acton 20 Shrewsbury 18 Marlborough 19 Nashua 23 Chelmsford 21 Worcester

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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 2026-10-21T03:57 UTC.