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)
56
Moderate
San Dimas, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
12.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.81 μg/m³
0
55
155
255
425
605+
18.60 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
10.40 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
San Dimas, California
San Dimas, California
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AQI 54
Moderate
11.47μg/m³
PM2.5
28.64μg/m³
PM10
17.18ppb
O3
0.23ppb
SO2
12.52ppb
NO2
0.29ppm
CO
AQI 62
Moderate
14.65μg/m³
PM2.5
21.23μg/m³
PM10
20.90ppb
O3
0.22ppb
SO2
6.31ppb
NO2
0.20ppm
CO
AQI 56
Moderate
11.66μg/m³
PM2.5
28.99μg/m³
PM10
17.01ppb
O3
0.23ppb
SO2
12.03ppb
NO2
0.30ppm
CO
AQI 60
Moderate
13.83μg/m³
PM2.5
22.12μg/m³
PM10
20.94ppb
O3
0.21ppb
SO2
6.55ppb
NO2
0.20ppm
CO
AQI 58
Moderate
13.26μg/m³
PM2.5
22.89μg/m³
PM10
20.85ppb
O3
0.22ppb
SO2
6.87ppb
NO2
0.20ppm
CO
AQI 54
Moderate
10.70μg/m³
PM2.5
28.84μg/m³
PM10
17.05ppb
O3
0.23ppb
SO2
14.19ppb
NO2
0.29ppm
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 12:00:00 on 2025-07-14.
In the last 24 hrs, the best air quality in San Dimas, California was observed at 07:00:00 on 2025-07-14.
The current air quality in San Dimas, California is 56, 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 12.273 μg/m3.
The current PM10 concentration at San Dimas, California is 25.813 μg/m3.
The current carbon monoxide (CO) concentration at San Dimas, California is 0.252 ppm.
The current sulfur dioxide (SO2) concentration at San Dimas, California is 0.225 ppb.
The current ozone (O3) concentration at San Dimas, California is 18.604 ppm.
The current nitrogen dioxide (NO2) concentration at San Dimas, California is 10.404 ppb.
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