Stay updated with real-time air quality in Lake Forest, 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)
46
Good
Lake Forest, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.11 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.12 μg/m³
0
55
155
255
425
605+
49.93 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
2.79 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lake Forest, California
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AQI 45
Good
2.15μg/m³
PM2.5
11.99μg/m³
PM10
49.40ppb
O3
0.46ppb
SO2
2.80ppb
NO2
0.16ppm
CO
AQI 46
Good
2.11μg/m³
PM2.5
11.17μg/m³
PM10
49.92ppb
O3
0.46ppb
SO2
2.79ppb
NO2
0.16ppm
CO
AQI 46
Good
2.13μg/m³
PM2.5
11.61μg/m³
PM10
49.63ppb
O3
0.46ppb
SO2
2.79ppb
NO2
0.16ppm
CO
AQI 45
Good
2.29μg/m³
PM2.5
12.92μg/m³
PM10
49.15ppb
O3
0.47ppb
SO2
2.80ppb
NO2
0.16ppm
CO
AQI 45
Good
2.16μg/m³
PM2.5
12.26μg/m³
PM10
49.24ppb
O3
0.46ppb
SO2
2.79ppb
NO2
0.16ppm
CO
AQI 45
Good
2.25μg/m³
PM2.5
12.73μg/m³
PM10
49.15ppb
O3
0.46ppb
SO2
2.74ppb
NO2
0.16ppm
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 Lake Forest, California is updated every hour.
The worst air quality in Lake Forest, California in the last 24 hours was observed at 05:00:00 on 2026-03-06.
In the last 24 hrs, the best air quality in Lake Forest, California was observed at 09:00:00 on 2026-03-06.
The current air quality in Lake Forest, California is 46, categorized as Good based on real-time data.
The most common pollutant in Lake Forest, California is O3.
If the air quality in Lake Forest, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Lake Forest, California is 2.106 μg/m3.
The current PM10 concentration at Lake Forest, California is 11.116 μg/m3.
The current carbon monoxide (CO) concentration at Lake Forest, California is 0.159 ppm.
The current sulfur dioxide (SO2) concentration at Lake Forest, California is 0.461 ppb.
The current ozone (O3) concentration at Lake Forest, California is 49.93 ppm.
The current nitrogen dioxide (NO2) concentration at Lake Forest, California is 2.795 ppb.
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