Stay updated with real-time air quality in Rancho Santa Margarita, 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)
30
Good
Rancho Santa Margarita, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.26 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.32 μg/m³
0
55
155
255
425
605+
31.72 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
4.14 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Rancho Santa Margarita, California
Rancho Santa Margarita, California
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AQI 34
Good
5.20μg/m³
PM2.5
28.34μg/m³
PM10
37.36ppb
O3
1.02ppb
SO2
2.94ppb
NO2
0.18ppm
CO
AQI 34
Good
4.49μg/m³
PM2.5
18.68μg/m³
PM10
36.59ppb
O3
1.00ppb
SO2
2.92ppb
NO2
0.21ppm
CO
AQI 34
Good
4.49μg/m³
PM2.5
18.45μg/m³
PM10
36.65ppb
O3
0.96ppb
SO2
2.92ppb
NO2
0.21ppm
CO
AQI 33
Good
4.46μg/m³
PM2.5
17.25μg/m³
PM10
36.44ppb
O3
0.96ppb
SO2
2.85ppb
NO2
0.22ppm
CO
AQI 32
Good
4.61μg/m³
PM2.5
18.85μg/m³
PM10
34.63ppb
O3
1.02ppb
SO2
2.87ppb
NO2
0.20ppm
CO
AQI 33
Good
4.46μg/m³
PM2.5
17.25μg/m³
PM10
36.44ppb
O3
0.96ppb
SO2
2.85ppb
NO2
0.22ppm
CO
Air quality and pollutant data for California, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Rancho Santa Margarita, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Rancho Santa Margarita, California was at its worst at 05:00:00 on 2025-09-10.
In the last 24 hours, the best air quality in Rancho Santa Margarita, California was observed at 12:00:00 on 2025-09-10.
As of now, the AQI in Rancho Santa Margarita, California is 34, indicating Good conditions.
Rancho Santa Margarita, California air has the highest levels of O3.
Poor air quality in Rancho Santa Margarita, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Rancho Santa Margarita, California are currently 5.235 μg/m3.
The PM10 concentration in Rancho Santa Margarita, California is 23.984 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Rancho Santa Margarita, California is 0.181 ppm.
Currently, Rancho Santa Margarita, California has a sulfur dioxide (SO2) concentration of 0.984 ppb.
The current ozone (O3) level in Rancho Santa Margarita, California at the moment is 36.844 ppm.
Nitrogen dioxide (NO2) level in Rancho Santa Margarita, California at the moment is 2.998 ppb.
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