Stay updated with real-time air quality in Aliso 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)
16
Good
Aliso Viejo, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.70 μg/m³
0
55
155
255
425
605+
16.56 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
11.79 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Aliso Viejo, California
Aliso Viejo, California
Scroll To Air Quality MapLoading...
AQI 22
Good
3.93μg/m³
PM2.5
11.28μg/m³
PM10
18.25ppb
O3
0.38ppb
SO2
4.17ppb
NO2
0.22ppm
CO
AQI 22
Good
3.93μg/m³
PM2.5
11.28μg/m³
PM10
18.25ppb
O3
0.38ppb
SO2
4.17ppb
NO2
0.22ppm
CO
AQI 17
Good
3.46μg/m³
PM2.5
14.41μg/m³
PM10
17.67ppb
O3
0.39ppb
SO2
3.24ppb
NO2
0.21ppm
CO
AQI 22
Good
3.68μg/m³
PM2.5
14.42μg/m³
PM10
16.96ppb
O3
0.38ppb
SO2
3.14ppb
NO2
0.22ppm
CO
AQI 22
Good
3.96μg/m³
PM2.5
11.30μg/m³
PM10
17.38ppb
O3
0.39ppb
SO2
3.13ppb
NO2
0.21ppm
CO
AQI 22
Good
3.67μg/m³
PM2.5
15.00μg/m³
PM10
16.91ppb
O3
0.39ppb
SO2
3.16ppb
NO2
0.20ppm
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 Aliso Viejo, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Aliso Viejo, California was at its worst at 05:00:00 on 2025-07-24.
In the last 24 hours, the best air quality in Aliso Viejo, California was observed at 08:00:00 on 2025-07-25.
As of now, the AQI in Aliso Viejo, California is 27, indicating Good conditions.
Aliso Viejo, California air has the highest levels of PM2.5.
Poor air quality in Aliso Viejo, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Aliso Viejo, California are currently 4.609 μg/m3.
The PM10 concentration in Aliso Viejo, California is 14.922 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Aliso Viejo, California is 0.205 ppm.
Currently, Aliso Viejo, California has a sulfur dioxide (SO2) concentration of 0.269 ppb.
The current ozone (O3) level in Aliso Viejo, California at the moment is 14.21 ppm.
Nitrogen dioxide (NO2) level in Aliso Viejo, California at the moment is 4.745 ppb.
All Rights Reserved © Ambee Inc. 2025