Stay updated with real-time air quality in Fountain Valley, 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)
49
Good
Fountain Valley, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
33.69 μg/m³
0
55
155
255
425
605+
25.59 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
12.62 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Fountain Valley, California
Fountain Valley, California
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AQI 38
Good
7.20μg/m³
PM2.5
22.41μg/m³
PM10
26.07ppb
O3
0.21ppb
SO2
14.24ppb
NO2
0.34ppm
CO
AQI 33
Good
6.19μg/m³
PM2.5
24.96μg/m³
PM10
28.97ppb
O3
0.23ppb
SO2
9.59ppb
NO2
0.31ppm
CO
AQI 27
Good
5.19μg/m³
PM2.5
11.86μg/m³
PM10
28.96ppb
O3
0.22ppb
SO2
9.22ppb
NO2
0.30ppm
CO
AQI 38
Good
7.17μg/m³
PM2.5
22.54μg/m³
PM10
25.37ppb
O3
0.22ppb
SO2
15.81ppb
NO2
0.38ppm
CO
AQI 38
Good
7.05μg/m³
PM2.5
23.46μg/m³
PM10
25.55ppb
O3
0.22ppb
SO2
16.13ppb
NO2
0.38ppm
CO
AQI 38
Good
7.32μg/m³
PM2.5
22.08μg/m³
PM10
25.73ppb
O3
0.22ppb
SO2
13.31ppb
NO2
0.33ppm
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 Fountain Valley, California is updated every hour for accuracy.
In the past 24 hours, the air quality in Fountain Valley, California was at its worst at 03:00:00 on 2025-06-06.
In the last 24 hours, the best air quality in Fountain Valley, California was observed at 08:00:00 on 2025-06-06.
As of now, the AQI in Fountain Valley, California is 49, indicating Good conditions.
Fountain Valley, California air has the highest levels of PM2.5.
Poor air quality in Fountain Valley, California means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Fountain Valley, California are currently 9.026 μg/m3.
The PM10 concentration in Fountain Valley, California is 33.689 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Fountain Valley, California is 0.28 ppm.
Currently, Fountain Valley, California has a sulfur dioxide (SO2) concentration of 0.348 ppb.
The current ozone (O3) level in Fountain Valley, California at the moment is 25.59 ppm.
Nitrogen dioxide (NO2) level in Fountain Valley, California at the moment is 12.623 ppb.
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