Air Quality in Weymouth, United States

Rain
18.0°C · 93.3% humidity
18.0°
Feels 18.0°
56
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
60 4pm
60
60
56 7pm
60
60
53 10pm
53
51
51 1am
50
50
50 4am
50
50
50 7am
50
50
50 10am
50
50
50 1pm
50
50
Station readings
71
56
58
CAMS model adj +26
34
34
34
34
34
34
27
27
25
25
24
24
24
24
24
24
24
24
24
24
24
24
24
24
AD 728×90

Air Quality Index Trend

47h · 1 stn

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

93.3%
Humidity
131.5 km/h
Wind NNE
1011.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
56
14.51 µg/m³
PM10
53
59.3 µg/m³
050100150200300500

What is the weather forecast for Weymouth?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.514.51 µg/m³ ✓ WHO
Moderate
PM1059.3 µg/m³
Moderate
UV INDEX0.7
Low
AD 300×250
Station readings (6 stations within 25 km)
14.51
Median
14.78
Average
11.5
Low
17.8
High
PM2.5 µg/m³ · Model: 18.1 · Bias: +3.6

What is the 7-day forecast for Weymouth?

07-21
25.5° 19.1°
11.5 mm
07-22
21.9° 16.3°
23.62 mm
07-23
26.8° 17.0°
1.81 mm
07-24
26.0° 16.6°
3.44 mm
07-25
33.0° 21.0°
6.38 mm
07-26
24.2° 18.2°
0.25 mm
07-27
27.1° 15.8°
14.69 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Weymouth?

32
Milton Blue Hill Observatory
14.4 km PM2.5: 7.7 µg/m³
9
Boston Roxbury
16.8 km PM2.5: 2.2 µg/m³
53
Nubian Square - DEP Station
16.9 km PM2.5: 13.0 µg/m³
52
Boston
18.2 km PM2.5: 12.6 µg/m³
42
Boston
18.2 km PM2.5: 10.1 µg/m³
25
Brockton
18.3 km PM2.5: 6.0 µg/m³
58
Magazine Beach Park
20.8 km PM2.5: 15.3 µg/m³ PM10: 17.0 µg/m³

What cities are near Weymouth?

55 Braintree 56 Quincy 55 Rockland 53 Randolph 55 Milton 56 Ashmont 48 Abington 55 Mattapan 56 Dorchester 60 South Boston
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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 2026-07-21T23:17 UTC.