Stay updated with real-time air quality in Claremont, 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)
28
Good
Claremont, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.37 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.57 μg/m³
0
55
155
255
425
605+
9.09 ppb
0
55
71
86
201
201+
1.09 ppb
0
36
76
186
605
1005+
29.98 ppb
0
54
101
361
1250
2050+
0.44 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Claremont, California
Claremont, California
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AQI 57
Moderate
11.90μg/m³
PM2.5
68.25μg/m³
PM10
15.63ppb
O3
0.69ppb
SO2
40.44ppb
NO2
0.34ppm
CO
AQI 27
Good
5.35μg/m³
PM2.5
27.63μg/m³
PM10
10.39ppb
O3
0.70ppb
SO2
22.13ppb
NO2
0.34ppm
CO
AQI 49
Good
8.76μg/m³
PM2.5
48.98μg/m³
PM10
23.00ppb
O3
0.71ppb
SO2
26.83ppb
NO2
0.34ppm
CO
AQI 60
Moderate
12.92μg/m³
PM2.5
73.33μg/m³
PM10
12.51ppb
O3
0.69ppb
SO2
43.78ppb
NO2
0.33ppm
CO
AQI 66
Moderate
14.01μg/m³
PM2.5
84.90μg/m³
PM10
10.47ppb
O3
0.69ppb
SO2
49.02ppb
NO2
0.33ppm
CO
AQI 34
Good
3.36μg/m³
PM2.5
23.14μg/m³
PM10
37.38ppb
O3
0.71ppb
SO2
10.52ppb
NO2
0.35ppm
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 Claremont, California is updated on an hourly basis.
The worst air quality in Claremont, California was recorded at 11:00:00 on 2026-10-06.
The best air quality in Claremont, California was recorded at 12:00:00 on 2026-10-06.
The real-time air quality index in Claremont, California is 39, currently categorized as Good.
The most common pollutant in Claremont, California is NO2.
If the air quality in Claremont, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Claremont, California at present are 4.425 μg/m3.
The current PM10 levels in Claremont, California are 21.704 μg/m3.
The current carbon monoxide (CO) level in Claremont, California is 0.339 ppm.
The current sulfur dioxide (SO2) levels in Claremont, California are 0.694 ppb.
The current ozone (O3) levels at Claremont, California is 10.243 ppm.
The current nitrogen dioxide (NO2) levels at Claremont, California is 40.569 ppb.
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