Air Quality in Belmont, United States

Overcast
10.5°C · 92.5% humidity
10.5°
Feels 10.5°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast
34 4am
34
27
17 7am
20
22
23 10am
24
25
26 1pm
26
26
27 4pm
27
34
34 7pm
34
34
34 10pm
34
34
34 1am
34
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.

92.5%
Humidity
26.1 km/h
Wind SW
1016.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
17
4.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Belmont?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.54.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (19 stations within 25 km)
4.0
Median
5.04
Average
1.9
Low
8.42
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +2.5

What is the 7-day forecast for Belmont?

05-29
18.7° 10.5°
05-30
16.0° 12.4°
05-31
21.7° 14.7°
06-01
21.0° 11.0°
06-02
18.6° 10.3°
06-03
22.2° 8.9°
06-04
21.3° 9.9°
Both models agree Avg diff: 2.9°C

Where are air quality stations near Belmont?

13
Emerald Hills
7.3 km PM2.5: 3.1 µg/m³
15
Redwood City, San Mateo, California
7.6 km PM2.5: 3.6 µg/m³
59
Redwood City, San Mateo, California
7.6 km PM2.5: 15.9 µg/m³
10
Berkeley-Palo Alto
13.5 km PM2.5: 2.5 µg/m³
22
Belle Air School
16.2 km PM2.5: 5.3 µg/m³
22
Parkside Intermediate School
16.5 km PM2.5: 5.3 µg/m³
28
Parkside Intermediate School (redeployment)
16.5 km PM2.5: 6.6 µg/m³
16
Acterra!
18.1 km PM2.5: 3.9 µg/m³
18
Brentwood Park
19.0 km PM2.5: 4.4 µg/m³
22
California and Cypress Ave
19.2 km PM2.5: 5.3 µg/m³

What cities are near Belmont?

14 San Carlos 22 Foster City 11 Redwood City 23 San Mateo 23 Burlingame 10 Menlo Park 23 Millbrae 11 East Palo Alto 11 Palo Alto 23 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 2026-05-29T14:48 UTC.