Stay updated with real-time air quality in San Juan Capistrano, 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)
67
Moderate
San Juan Capistrano, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
18.26 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.54 μg/m³
0
55
155
255
425
605+
14.29 ppb
0
55
71
86
201
201+
0.51 ppb
0
36
76
186
605
1005+
21.08 ppb
0
54
101
361
1250
2050+
0.68 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
San Juan Capistrano, California
San Juan Capistrano, California
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AQI 64
Moderate
16.45μg/m³
PM2.5
25.52μg/m³
PM10
12.00ppb
O3
0.49ppb
SO2
17.82ppb
NO2
0.71ppm
CO
AQI 66
Moderate
16.82μg/m³
PM2.5
53.33μg/m³
PM10
14.70ppb
O3
0.51ppb
SO2
22.51ppb
NO2
0.69ppm
CO
AQI 64
Moderate
15.83μg/m³
PM2.5
68.07μg/m³
PM10
14.05ppb
O3
0.50ppb
SO2
25.97ppb
NO2
0.69ppm
CO
AQI 64
Moderate
16.45μg/m³
PM2.5
25.52μg/m³
PM10
12.00ppb
O3
0.49ppb
SO2
17.82ppb
NO2
0.71ppm
CO
AQI 64
Moderate
16.22μg/m³
PM2.5
25.78μg/m³
PM10
12.03ppb
O3
0.49ppb
SO2
17.88ppb
NO2
0.71ppm
CO
AQI 64
Moderate
15.73μg/m³
PM2.5
68.42μg/m³
PM10
14.06ppb
O3
0.51ppb
SO2
16.57ppb
NO2
0.68ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for San Juan Capistrano, California are available every hour.
San Juan Capistrano, California experienced its worst air quality at 12:00:00, 2026-01-23.
The best air quality in San Juan Capistrano, California was observed at 09:00:00 on 2026-01-23.
The air quality in San Juan Capistrano, California right now is Moderate, with an AQI of 67.
In San Juan Capistrano, California, PM2.5 is the most frequently found pollutant.
When air quality in San Juan Capistrano, California is compromised, staying indoors and wearing a mask can reduce health risks.
San Juan Capistrano, California currently has a PM2.5 concentration of 18.257 μg/m3.
San Juan Capistrano, California currently has a PM10 concentration of 39.541 μg/m3.
The current carbon monoxide (CO) level in San Juan Capistrano, California is 0.683 ppm.
The current sulfur dioxide (SO2) concentration in San Juan Capistrano, California is 0.506 ppb.
San Juan Capistrano, California currently has an ozone (O3) concentration of 14.295 ppm.
The current level of nitrogen dioxide (NO2) in San Juan Capistrano, California is 21.079 ppb.
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