Stay updated with real-time air quality in Rancho Mission Viejo, 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)
52
Moderate
Rancho Mission Viejo, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.90 μg/m³
0
55
155
255
425
605+
43.07 ppb
0
55
71
86
201
201+
0.66 ppb
0
36
76
186
605
1005+
4.23 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Rancho Mission Viejo, California
Rancho Mission Viejo, California
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AQI 52
Moderate
9.77μg/m³
PM2.5
22.91μg/m³
PM10
41.56ppb
O3
0.56ppb
SO2
3.96ppb
NO2
0.18ppm
CO
AQI 52
Moderate
9.53μg/m³
PM2.5
27.66μg/m³
PM10
39.29ppb
O3
0.58ppb
SO2
3.26ppb
NO2
0.18ppm
CO
AQI 52
Moderate
10.02μg/m³
PM2.5
23.08μg/m³
PM10
41.70ppb
O3
0.55ppb
SO2
3.85ppb
NO2
0.18ppm
CO
AQI 52
Moderate
9.63μg/m³
PM2.5
21.20μg/m³
PM10
41.98ppb
O3
0.56ppb
SO2
3.53ppb
NO2
0.18ppm
CO
AQI 49
Good
9.05μg/m³
PM2.5
42.51μg/m³
PM10
38.77ppb
O3
0.58ppb
SO2
3.40ppb
NO2
0.18ppm
CO
AQI 49
Good
8.65μg/m³
PM2.5
24.25μg/m³
PM10
39.52ppb
O3
0.59ppb
SO2
3.33ppb
NO2
0.18ppm
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 Rancho Mission Viejo, California are available every hour.
Rancho Mission Viejo, California experienced its worst air quality at 05:00:00, 2026-06-08.
The best air quality in Rancho Mission Viejo, California was observed at 01:00:00 on 2026-06-08.
The air quality in Rancho Mission Viejo, California right now is Moderate, with an AQI of 52.
In Rancho Mission Viejo, California, PM2.5 is the most frequently found pollutant.
When air quality in Rancho Mission Viejo, California is compromised, staying indoors and wearing a mask can reduce health risks.
Rancho Mission Viejo, California currently has a PM2.5 concentration of 9.77 μg/m3.
Rancho Mission Viejo, California currently has a PM10 concentration of 22.909 μg/m3.
The current carbon monoxide (CO) level in Rancho Mission Viejo, California is 0.179 ppm.
The current sulfur dioxide (SO2) concentration in Rancho Mission Viejo, California is 0.557 ppb.
Rancho Mission Viejo, California currently has an ozone (O3) concentration of 41.56 ppm.
The current level of nitrogen dioxide (NO2) in Rancho Mission Viejo, California is 3.956 ppb.
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