Stay updated with real-time air quality in San Carlos, California featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
38
Good
San Carlos, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.34 μg/m³
0
55
155
255
425
605+
30.15 ppb
0
55
71
86
201
201+
1.01 ppb
0
36
76
186
605
1005+
4.66 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
San Carlos, California
San Carlos, California
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AQI 44
Good
7.68μg/m³
PM2.5
34.04μg/m³
PM10
29.10ppb
O3
1.02ppb
SO2
4.61ppb
NO2
0.27ppm
CO
AQI 38
Good
7.40μg/m³
PM2.5
33.01μg/m³
PM10
30.67ppb
O3
1.01ppb
SO2
4.66ppb
NO2
0.28ppm
CO
AQI 44
Good
7.74μg/m³
PM2.5
34.27μg/m³
PM10
28.77ppb
O3
1.02ppb
SO2
4.63ppb
NO2
0.27ppm
CO
AQI 38
Good
7.40μg/m³
PM2.5
33.01μg/m³
PM10
30.67ppb
O3
1.01ppb
SO2
4.66ppb
NO2
0.28ppm
CO
AQI 44
Good
8.09μg/m³
PM2.5
32.56μg/m³
PM10
25.80ppb
O3
1.15ppb
SO2
3.74ppb
NO2
0.34ppm
CO
AQI 44
Good
7.51μg/m³
PM2.5
33.34μg/m³
PM10
30.59ppb
O3
1.00ppb
SO2
4.68ppb
NO2
0.27ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for San Carlos, California are available every hour.
San Carlos, California experienced its worst air quality at 08:00:00, 2025-06-05.
The best air quality in San Carlos, California was observed at 10:00:00 on 2025-06-06.
The air quality in San Carlos, California right now is Good, with an AQI of 38.
In San Carlos, California, PM2.5 is the most frequently found pollutant.
When air quality in San Carlos, California is compromised, staying indoors and wearing a mask can reduce health risks.
San Carlos, California currently has a PM2.5 concentration of 7.495 μg/m3.
San Carlos, California currently has a PM10 concentration of 33.341 μg/m3.
The current carbon monoxide (CO) level in San Carlos, California is 0.274 ppm.
The current sulfur dioxide (SO2) concentration in San Carlos, California is 1.01 ppb.
San Carlos, California currently has an ozone (O3) concentration of 30.151 ppm.
The current level of nitrogen dioxide (NO2) in San Carlos, California is 4.664 ppb.
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