Air Quality in Belmont, United States

Rain
24.5°C · 79.1% humidity
24.5°
Feels 24.5°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast
25 6pm
25
27
38 9pm
34
27
27 12am
25
25
24 3am
24
24
24 6am
24
24
25 9am
24
24
24 12pm
24
24
24 3pm
25
24
AD 728×90

Air Quality Index Trend

45h · 6 stn

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

79.1%
Humidity
53.7 km/h
Wind SW
1009.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
38
9.18 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Belmont?

Temperature & Precipitation

PM2.5 Trend

45h · 6 stations
PM2.59.18 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (4 stations within 25 km)
9.18
Median
8.68
Average
5.3
Low
11.5
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -3.0

What is the 7-day forecast for Belmont?

05-30
24.5° 9.2°
8.56 mm
05-31
25.5° 10.0°
0.5 mm
06-01
22.7° 8.1°
06-02
20.9° 12.2°
0.44 mm
06-03
27.3° 14.7°
06-04
22.8° 17.5°
0.13 mm
06-05
23.7° 11.0°
0.69 mm
Both models agree Avg diff: 5.3°C

Where are air quality stations near Belmont?

21
Boston
10.6 km PM2.5: 5.0 µg/m³
17
Boston
10.6 km PM2.5: 4.1 µg/m³
38
Nubian Square - DEP Station
10.8 km PM2.5: 9.0 µg/m³
25
Boston Roxbury
10.8 km PM2.5: 6.0 µg/m³
14
Milton Blue Hill Observatory
21.2 km PM2.5: 3.4 µg/m³

What cities are near Belmont?

39 Watertown 38 Waltham 39 Brighton 39 Allston 39 Cambridge 37 Medford 39 Somerville 39 Chestnut Hill 39 Brookline 39 Fenway/Kenmore
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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 2026-05-30T01:03 UTC.