Stay updated with real-time air quality in Clayton, 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)
64
Moderate
Clayton, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
16.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
71.98 μg/m³
0
55
155
255
425
605+
13.98 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
5.11 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Clayton, California
Clayton, California
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AQI 56
Moderate
11.59μg/m³
PM2.5
50.97μg/m³
PM10
13.95ppb
O3
0.27ppb
SO2
4.24ppb
NO2
0.40ppm
CO
AQI 58
Moderate
12.65μg/m³
PM2.5
55.37μg/m³
PM10
13.95ppb
O3
0.36ppb
SO2
4.18ppb
NO2
0.39ppm
CO
AQI 49
Good
8.73μg/m³
PM2.5
30.10μg/m³
PM10
10.68ppb
O3
0.35ppb
SO2
5.17ppb
NO2
0.36ppm
CO
AQI 54
Moderate
11.23μg/m³
PM2.5
49.48μg/m³
PM10
13.96ppb
O3
0.24ppb
SO2
4.38ppb
NO2
0.40ppm
CO
AQI 54
Moderate
11.49μg/m³
PM2.5
50.64μg/m³
PM10
13.69ppb
O3
0.28ppb
SO2
4.61ppb
NO2
0.39ppm
CO
AQI 54
Moderate
11.11μg/m³
PM2.5
47.68μg/m³
PM10
12.94ppb
O3
0.35ppb
SO2
4.79ppb
NO2
0.37ppm
CO
Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Clayton, California is updated every hour.
The worst air quality in Clayton, California in the last 24 hours was observed at 10:00:00 on 2025-12-07.
In the last 24 hrs, the best air quality in Clayton, California was observed at 02:00:00 on 2025-12-07.
The current air quality in Clayton, California is 56, categorized as Moderate based on real-time data.
The most common pollutant in Clayton, California is PM2.5.
If the air quality in Clayton, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Clayton, California is 11.672 μg/m3.
The current PM10 concentration at Clayton, California is 51.166 μg/m3.
The current carbon monoxide (CO) concentration at Clayton, California is 0.389 ppm.
The current sulfur dioxide (SO2) concentration at Clayton, California is 0.31 ppb.
The current ozone (O3) concentration at Clayton, California is 13.796 ppm.
The current nitrogen dioxide (NO2) concentration at Clayton, California is 4.394 ppb.
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