Air Quality in Belmont, United States

Windy
7.0°C · 60.1% humidity
7.0°
Feels 1.0°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
20 9pm
20
18
20 12am
32
32
32 3am
32
32
32 6am
32
32
32 9am
32
45
45 12pm
70
45
45 3pm
45
32
32 6pm
32
32
Station readings
20
20
18
CAMS model adj -5
25
25
25
25
37
37
37
37
37
37
37
37
37
37
50
50
75
50
50
50
37
37
37
37
AD 728×90

PM2.5 Trend (24h)

23h · 2 stations
60.1%
Humidity
58.7 km/h
Wind SSW
1031.8 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Belmont?

Temperature & Precipitation

PM2.54.6 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (1 station within 25 km)
4.6
Median
4.6
Average
4.6
Low
4.6
High
PM2.5 µg/m³ · Model: 23.4 · Bias: +18.8

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: 4.3°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
35
Boston
10.6 km
19
Nubian Square - DEP Station
10.8 km PM2.5: 4.5 µg/m³
34
Boston Roxbury
10.8 km
38
Boston Von Hillern
12.8 km
36
Lynn Water Treatment Plant
19.1 km
35
Lynn Water Treatment Plant
19.1 km
39
Milton Blue Hill Observatory
21.2 km
38
Milton Blue Hill Observatory
21.2 km
37
Milton Blue Hill Observatory
21.2 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 2026-04-10T00:57 UTC.