Air Quality in Worcester, United States
Partly Cloudy
17.5°C · 57.1% humidity
17.5°
Feels 17.5°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Worcester's air quality — share it
AQI Forecast
24
2pm
24
24
26
5pm
24
24
24
8pm
25
25
25
11pm
25
25
25
2am
25
25
27
5am
27
25
25
8am
24
24
24
11am
24
24
Air Quality Index Trend
40h · 2 stnWorcester's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Worcester is 1.2× the WHO annual guideline of 5 µg/m³.
57.1%
Humidity
22.0 km/h
Wind WNW
1019.5 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.2 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Worcester?
Temperature & Precipitation
PM2.5 Trend
40h · 2 stationsPM2.56.2 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
Station readings (1 station within 25 km)
6.2
Median
6.2
Average
6.2
Low
6.2
High
PM2.5 µg/m³ · Model: 5.8 · Bias: -0.4
What is the 7-day forecast for Worcester?
05-28
22.0° 15.7°
0.13 mm
05-29
19.9° 10.7°
0.06 mm
05-30
23.7° 8.6°
7.06 mm
05-31
25.3° 9.8°
0.5 mm
06-01
23.7° 7.4°
06-02
19.8° 9.7°
06-03
26.6° 13.1°
Both models agree
Avg diff: 4.1°C
Where are air quality stations near Worcester?
What cities are near Worcester?
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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 2026-05-28T21:47 UTC.