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)
44
Good
Clayton, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.87 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.78 μg/m³
0
55
155
255
425
605+
40.32 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
1.44 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Very high
Clayton, California
Clayton, California
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AQI 44
Good
8.23μg/m³
PM2.5
36.37μg/m³
PM10
40.59ppb
O3
0.23ppb
SO2
1.31ppb
NO2
0.30ppm
CO
AQI 44
Good
7.58μg/m³
PM2.5
33.41μg/m³
PM10
39.70ppb
O3
0.29ppb
SO2
1.38ppb
NO2
0.28ppm
CO
AQI 38
Good
7.17μg/m³
PM2.5
30.42μg/m³
PM10
37.22ppb
O3
0.32ppb
SO2
1.56ppb
NO2
0.25ppm
CO
AQI 44
Good
8.44μg/m³
PM2.5
37.29μg/m³
PM10
40.81ppb
O3
0.22ppb
SO2
1.35ppb
NO2
0.30ppm
CO
AQI 44
Good
8.35μg/m³
PM2.5
36.92μg/m³
PM10
40.75ppb
O3
0.23ppb
SO2
1.49ppb
NO2
0.30ppm
CO
AQI 38
Good
7.44μg/m³
PM2.5
32.66μg/m³
PM10
40.46ppb
O3
0.32ppb
SO2
1.57ppb
NO2
0.28ppm
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 07:00:00 on 2026-04-25.
In the last 24 hrs, the best air quality in Clayton, California was observed at 11:00:00 on 2026-04-25.
The current air quality in Clayton, California is 44, categorized as Good 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 7.872 μg/m3.
The current PM10 concentration at Clayton, California is 34.783 μg/m3.
The current carbon monoxide (CO) concentration at Clayton, California is 0.291 ppm.
The current sulfur dioxide (SO2) concentration at Clayton, California is 0.263 ppb.
The current ozone (O3) concentration at Clayton, California is 40.324 ppm.
The current nitrogen dioxide (NO2) concentration at Clayton, California is 1.439 ppb.
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