Air Quality in San Carlos, United States

Overcast
10.5°C · 92.5% humidity
10.5°
Feels 10.5°
14
Good
Air quality is satisfactory. Enjoy outdoor activities.
16 stations

Nearby Monitoring Stations

AQI Forecast
34 4am
34
27
14 7am
18
20
22 10am
24
25
25 1pm
26
26
26 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

San Carlos'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▲
14
3.41 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for San Carlos?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.53.41 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (16 stations within 25 km)
3.41
Median
4.92
Average
1.9
Low
8.42
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +3.1

What is the 7-day forecast for San Carlos?

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 San Carlos?

59
Redwood City, San Mateo, California
5.7 km PM2.5: 15.9 µg/m³
15
Redwood City, San Mateo, California
5.7 km PM2.5: 3.6 µg/m³
13
Emerald Hills
5.9 km PM2.5: 3.1 µg/m³
10
Berkeley-Palo Alto
11.6 km PM2.5: 2.5 µg/m³
16
Acterra!
16.2 km PM2.5: 3.9 µg/m³
22
Belle Air School
18.2 km PM2.5: 5.3 µg/m³
22
Parkside Intermediate School
18.5 km PM2.5: 5.3 µg/m³
28
Parkside Intermediate School (redeployment)
18.5 km PM2.5: 6.6 µg/m³
18
Brentwood Park
21.0 km PM2.5: 4.4 µg/m³
22
California and Cypress Ave
21.2 km PM2.5: 5.3 µg/m³

What cities are near San Carlos?

17 Belmont 11 Redwood City 22 Foster City 23 San Mateo 10 Menlo Park 11 East Palo Alto 23 Burlingame 11 Palo Alto 23 Millbrae 15 Los Altos
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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 2026-05-29T14:41 UTC.