Air Quality in Belmont, United States

Partly Cloudy
3.4°C · 69.0% humidity
3.4°
Feels -2.7°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
19 12am
19
18
27 3am
27
27
27 6am
27
27
27 9am
27
40
40 12pm
65
40
40 3pm
40
27
27 6pm
27
27
27 9pm
27
27
Station readings
19
19
18
CAMS model adj -10
25
37
37
37
37
37
37
37
37
37
37
50
50
75
50
50
50
37
37
37
37
37
37
37
AD 728×90

PM2.5 Trend (24h)

23h · 2 stations
69.0%
Humidity
37.7 km/h
Wind SW
1030.9 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Belmont?

Temperature & Precipitation

PM2.54.46 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (1 station within 25 km)
4.46
Median
4.46
Average
4.46
Low
4.46
High
PM2.5 µg/m³ · Model: 23.4 · Bias: +18.9

What is the 7-day forecast for Belmont?

04-10
19.2° 3.4°
04-11
22.8° 7.9°
04-12
17.3° 7.3°
04-13
13.1° 8.5°
1.75 mm
04-14
26.5° 13.6°
0.25 mm
04-15
25.3° 19.1°
0.19 mm
04-16
14.3° 7.6°
0.56 mm
Both models agree Avg diff: 4.2°C

Where are air quality stations near Belmont?

33
Magazine Beach Park
6.9 km PM2.5: 7.9 µg/m³ PM10: 9.2 µg/m³
30
Boston
10.6 km
31
Boston
10.6 km
18
Nubian Square - DEP Station
10.8 km PM2.5: 4.4 µg/m³
37
Boston Roxbury
10.8 km
31
Boston Roxbury
10.8 km
34
Boston Von Hillern
12.8 km
44
Boston Von Hillern
12.8 km
33
Lynn Water Treatment Plant
19.1 km
20
Lynn Water Treatment Plant
19.1 km

What cities are near Belmont?

19 Watertown 19 Waltham 19 Brighton 19 Allston 19 Cambridge 19 Medford 19 Somerville 19 Chestnut Hill 19 Brookline 19 Fenway/Kenmore

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T03:38 UTC.