Air Quality in Fitchburg, United States
Partly Cloudy
25.5°C · 69.7% humidity
25.5°
Feels 25.5°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations
Nearby Monitoring Stations
Fitchburg's air quality — share it
AQI Forecast
Calibrated
40
3pm
40
40
35
6pm
36
38
39
9pm
40
40
42
12am
70
82
99
3am
100
100
100
6am
162
70
82
9am
100
162
162
12pm
162
162
Station readings
30
33
CAMS model
adj +16
24
24
24
24
24
25
25
25
25
27
54
66
83
84
84
84
146
54
66
84
146
146
146
146
Air Quality Index Trend
10h · 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.
69.7%
Humidity
2.8 km/h
Wind N
1014.5 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.33 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Fitchburg?
Temperature & Precipitation
PM2.5 Trend
10h · 1 stationPM2.58.33 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
Station readings (4 stations within 25 km)
8.33
Median
8.28
Average
7.4
Low
10.1
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -2.4
What is the 7-day forecast for Fitchburg?
07-21
25.3° 21.8°
0.06 mm
07-22
25.5° 17.9°
7.06 mm
07-23
19.9° 16.4°
9.69 mm
07-24
27.9° 12.8°
0.06 mm
07-25
22.3° 16.2°
1.31 mm
07-26
26.2° 19.8°
2.56 mm
07-27
25.0° 18.6°
0.56 mm
Both models agree
Avg diff: 4.7°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 2026-07-21T23:00 UTC.