Air Quality in Fitchburg, United States
Windy
17.7°C · 45.4% humidity
17.7°
Feels 17.7°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Fitchburg's air quality — share it
AQI Forecast
Calibrated
20
9am
14
14
27
12pm
24
22
20
3pm
19
18
15
6pm
15
17
24
9pm
16
16
16
12am
16
23
23
3am
43
43
43
6am
23
23
Station readings
20
24
28
27
CAMS model
adj -11
34
25
25
27
27
27
27
27
27
25
25
27
34
27
27
27
27
34
34
54
54
54
34
34
Air Quality Index Trend
48h · 1 stnFitchburg's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
45.4%
Humidity
54.6 km/h
Wind NW
1020.5 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.38 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Fitchburg?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.56.38 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (3 stations within 25 km)
6.38
Median
6.4
Average
6.2
Low
6.5
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +0.1
What is the 7-day forecast for Fitchburg?
09-05
20.5° 15.5°
09-06
27.6° 9.1°
0.56 mm
09-07
22.5° 14.7°
09-08
21.2° 12.4°
3.88 mm
09-09
28.6° 12.8°
1.56 mm
09-10
24.8° 15.4°
0.25 mm
09-11
23.3° 15.7°
0.88 mm
Both models agree
Avg diff: 6.5°C
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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 2026-09-05T17:11 UTC.