Air Quality in Belmont, United States

Windy
15.8°C · 53.2% humidity
15.8°
Feels 15.8°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
20 stations

Nearby Monitoring Stations

AQI Forecast
54 3pm
54
54
18 6pm
28
36
41 9pm
45
47
49 12am
51
51
52 3am
53
53
53 6am
34
34
34 9am
34
54
54 12pm
54
34
AD 728×90

Air Quality Index Trend

48h · 1 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.

53.2%
Humidity
80.7 km/h
Wind W
1017.3 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
18
4.31 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Belmont?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.54.31 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (20 stations within 25 km)
4.31
Median
4.57
Average
3.38
Low
10.26
High
PM2.5 µg/m³ · Model: 9.65 · Bias: +5.3
Both models agree Avg diff: 4.1°C

Where are air quality stations near Belmont?

15
Emerald Hills
7.3 km PM2.5: 3.7 µg/m³
28
Redwood City, San Mateo, California
7.6 km PM2.5: 6.7 µg/m³
25
Redwood City, San Mateo, California
7.6 km PM2.5: 6.0 µg/m³
14
Berkeley-Palo Alto
13.5 km PM2.5: 3.4 µg/m³
17
Belle Air School
16.2 km PM2.5: 4.1 µg/m³
18
Parkside Intermediate School
16.5 km PM2.5: 4.3 µg/m³
28
Parkside Intermediate School (redeployment)
16.5 km PM2.5: 6.6 µg/m³
15
Acterra!
18.1 km PM2.5: 3.7 µg/m³
18
Brentwood Park
19.0 km PM2.5: 4.2 µg/m³
19
California and Cypress Ave
19.2 km PM2.5: 4.6 µg/m³

What cities are near Belmont?

18 San Carlos 19 Foster City 17 Redwood City 20 San Mateo 20 Burlingame 15 Menlo Park 19 Millbrae 15 East Palo Alto 15 Palo Alto 19 San Bruno
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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 2026-06-09T01:04 UTC.