Stay updated with real-time air quality in San Clemente, 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)
41
Good
San Clemente, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.19 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.29 μg/m³
0
55
155
255
425
605+
43.63 ppb
0
55
71
86
201
201+
0.60 ppb
0
36
76
186
605
1005+
11.03 ppb
0
54
101
361
1250
2050+
0.38 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
San Clemente, California
San Clemente, California
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AQI 41
Good
5.72μg/m³
PM2.5
18.01μg/m³
PM10
43.98ppb
O3
0.59ppb
SO2
9.73ppb
NO2
0.40ppm
CO
AQI 41
Good
6.23μg/m³
PM2.5
19.50μg/m³
PM10
43.66ppb
O3
0.59ppb
SO2
5.44ppb
NO2
0.39ppm
CO
AQI 37
Good
5.87μg/m³
PM2.5
16.05μg/m³
PM10
40.39ppb
O3
0.59ppb
SO2
7.07ppb
NO2
0.42ppm
CO
AQI 37
Good
5.87μg/m³
PM2.5
16.05μg/m³
PM10
40.39ppb
O3
0.59ppb
SO2
7.07ppb
NO2
0.42ppm
CO
AQI 41
Good
6.22μg/m³
PM2.5
18.29μg/m³
PM10
44.01ppb
O3
0.59ppb
SO2
8.26ppb
NO2
0.40ppm
CO
AQI 38
Good
6.08μg/m³
PM2.5
15.81μg/m³
PM10
40.79ppb
O3
0.60ppb
SO2
7.04ppb
NO2
0.41ppm
CO
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for San Clemente, California is updated on an hourly basis.
The worst air quality in San Clemente, California was recorded at 01:00:00 on 2026-04-24.
The best air quality in San Clemente, California was recorded at 04:00:00 on 2026-04-23.
The real-time air quality index in San Clemente, California is 41, currently categorized as Good.
The most common pollutant in San Clemente, California is O3.
If the air quality in San Clemente, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in San Clemente, California at present are 6.189 μg/m3.
The current PM10 levels in San Clemente, California are 19.286 μg/m3.
The current carbon monoxide (CO) level in San Clemente, California is 0.382 ppm.
The current sulfur dioxide (SO2) levels in San Clemente, California are 0.597 ppb.
The current ozone (O3) levels at San Clemente, California is 43.631 ppm.
The current nitrogen dioxide (NO2) levels at San Clemente, California is 11.025 ppb.
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