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)
33
Good
Lake Forest, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.61 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.07 μg/m³
0
55
155
255
425
605+
27.96 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
2.65 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Lake Forest, California
Lake Forest, California
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AQI 33
Good
5.65μg/m³
PM2.5
12.57μg/m³
PM10
27.68ppb
O3
0.45ppb
SO2
2.88ppb
NO2
0.29ppm
CO
AQI 33
Good
5.62μg/m³
PM2.5
12.12μg/m³
PM10
27.97ppb
O3
0.45ppb
SO2
2.66ppb
NO2
0.28ppm
CO
AQI 33
Good
5.64μg/m³
PM2.5
12.37μg/m³
PM10
27.80ppb
O3
0.45ppb
SO2
2.77ppb
NO2
0.28ppm
CO
AQI 33
Good
6.04μg/m³
PM2.5
13.94μg/m³
PM10
27.66ppb
O3
0.46ppb
SO2
3.32ppb
NO2
0.28ppm
CO
AQI 33
Good
5.68μg/m³
PM2.5
12.75μg/m³
PM10
27.59ppb
O3
0.45ppb
SO2
2.93ppb
NO2
0.29ppm
CO
AQI 33
Good
5.92μg/m³
PM2.5
13.48μg/m³
PM10
27.74ppb
O3
0.45ppb
SO2
2.83ppb
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 Lake Forest, California is updated every hour.
The worst air quality in Lake Forest, California in the last 24 hours was observed at 10:00:00 on 2026-08-12.
In the last 24 hrs, the best air quality in Lake Forest, California was observed at 08:00:00 on 2026-08-12.
The current air quality in Lake Forest, California is 33, categorized as Good based on real-time data.
The most common pollutant in Lake Forest, California is PM2.5.
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 5.607 μg/m3.
The current PM10 concentration at Lake Forest, California is 12.069 μg/m3.
The current carbon monoxide (CO) concentration at Lake Forest, California is 0.278 ppm.
The current sulfur dioxide (SO2) concentration at Lake Forest, California is 0.449 ppb.
The current ozone (O3) concentration at Lake Forest, California is 27.962 ppm.
The current nitrogen dioxide (NO2) concentration at Lake Forest, California is 2.654 ppb.
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