Stay updated with real-time air quality in San Dimas, 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
San Dimas, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
16.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
47.85 μg/m³
0
55
155
255
425
605+
55.09 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
10.19 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
San Dimas, California
San Dimas, California
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AQI 69
Moderate
18.53μg/m³
PM2.5
42.58μg/m³
PM10
50.42ppb
O3
0.31ppb
SO2
11.54ppb
NO2
0.30ppm
CO
AQI 67
Moderate
18.47μg/m³
PM2.5
43.95μg/m³
PM10
49.00ppb
O3
0.30ppb
SO2
10.70ppb
NO2
0.30ppm
CO
AQI 67
Moderate
18.30μg/m³
PM2.5
41.93μg/m³
PM10
50.06ppb
O3
0.31ppb
SO2
11.16ppb
NO2
0.30ppm
CO
AQI 66
Moderate
17.30μg/m³
PM2.5
42.37μg/m³
PM10
48.87ppb
O3
0.30ppb
SO2
10.19ppb
NO2
0.28ppm
CO
AQI 66
Moderate
17.11μg/m³
PM2.5
42.05μg/m³
PM10
48.68ppb
O3
0.30ppb
SO2
10.00ppb
NO2
0.27ppm
CO
AQI 69
Moderate
18.96μg/m³
PM2.5
43.64μg/m³
PM10
51.29ppb
O3
0.31ppb
SO2
12.38ppb
NO2
0.30ppm
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 San Dimas, California is updated every hour.
The worst air quality in San Dimas, California in the last 24 hours was observed at 10:00:00 on 2025-06-06.
In the last 24 hrs, the best air quality in San Dimas, California was observed at 03:00:00 on 2025-06-06.
The current air quality in San Dimas, California is 64, categorized as Moderate based on real-time data.
The most common pollutant in San Dimas, California is PM2.5.
If the air quality in San Dimas, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at San Dimas, California is 16.151 μg/m3.
The current PM10 concentration at San Dimas, California is 47.851 μg/m3.
The current carbon monoxide (CO) concentration at San Dimas, California is 0.296 ppm.
The current sulfur dioxide (SO2) concentration at San Dimas, California is 0.44 ppb.
The current ozone (O3) concentration at San Dimas, California is 55.087 ppm.
The current nitrogen dioxide (NO2) concentration at San Dimas, California is 10.191 ppb.
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