Air Quality in San Carlos, United States

Partly Cloudy
22.8°C · 67.8% humidity
22.8°
Feels 22.8°
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast
34 6am
34
34
18 9am
23
26
28 12pm
30
31
32 3pm
25
26
33 6pm
33
34
34 9pm
34
34
34 12am
34
34
34 3am
34
27
AD 728×90

Air Quality Index Trend

45h · 107 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.

67.8%
Humidity
10.2 km/h
Wind NNW
1016.6 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

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

What is the weather forecast for San Carlos?

Temperature & Precipitation

PM2.5 Trend

45h · 107 stations
PM2.54.16 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (19 stations within 25 km)
4.16
Median
5.56
Average
1.7
Low
8.96
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +3.2

What is the 7-day forecast for San Carlos?

09-05
25.7° 13.0°
09-06
26.7° 14.7°
09-07
28.3° 11.0°
09-08
27.4° 12.3°
09-09
24.8° 15.3°
09-10
24.4° 13.4°
09-11
21.2° 14.6°
0.13 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near San Carlos?

7
Redwood City, San Mateo, California
5.7 km PM2.5: 1.7 µg/m³
19
Emerald Hills
5.9 km PM2.5: 4.6 µg/m³
12
Berkeley-Palo Alto
11.6 km PM2.5: 3.0 µg/m³
22
Acterra!
16.2 km PM2.5: 5.2 µg/m³
23
Belle Air School
18.2 km PM2.5: 5.5 µg/m³
26
Garden Ave Residence
18.2 km PM2.5: 6.3 µg/m³
26
Parkside Intermediate School
18.5 km PM2.5: 6.3 µg/m³
24
San Bruno School District Office
18.8 km PM2.5: 5.8 µg/m³
27
Pacific Ave Residence
20.0 km PM2.5: 6.4 µg/m³
22
Brentwood Park
21.0 km PM2.5: 5.2 µg/m³

What cities are near San Carlos?

20 Belmont 13 Redwood City 24 Foster City 25 San Mateo 12 Menlo Park 13 East Palo Alto 25 Burlingame 14 Palo Alto 25 Millbrae 18 Los Altos
Get AQI alerts for San Carlos

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T16:41 UTC.