Stay updated with real-time air quality in Fallbrook, 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)
58
Moderate
Fallbrook, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
37.17 μg/m³
0
55
155
255
425
605+
12.94 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
19.82 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Fallbrook, California
Fallbrook, California
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AQI 38
Good
7.13μg/m³
PM2.5
23.01μg/m³
PM10
21.10ppb
O3
0.47ppb
SO2
22.99ppb
NO2
0.33ppm
CO
AQI 44
Good
8.00μg/m³
PM2.5
22.60μg/m³
PM10
21.75ppb
O3
0.50ppb
SO2
23.94ppb
NO2
0.41ppm
CO
AQI 56
Moderate
12.46μg/m³
PM2.5
32.24μg/m³
PM10
19.83ppb
O3
0.46ppb
SO2
19.52ppb
NO2
0.35ppm
CO
AQI 44
Good
8.19μg/m³
PM2.5
22.01μg/m³
PM10
22.04ppb
O3
0.49ppb
SO2
21.03ppb
NO2
0.40ppm
CO
AQI 44
Good
8.18μg/m³
PM2.5
21.96μg/m³
PM10
21.98ppb
O3
0.49ppb
SO2
21.05ppb
NO2
0.41ppm
CO
AQI 52
Moderate
10.01μg/m³
PM2.5
27.75μg/m³
PM10
24.77ppb
O3
0.45ppb
SO2
18.49ppb
NO2
0.32ppm
CO
The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Fallbrook, California are available every hour.
Fallbrook, California experienced its worst air quality at 04:00:00, 2025-10-23.
The best air quality in Fallbrook, California was observed at 01:00:00 on 2025-10-23.
The air quality in Fallbrook, California right now is Good, with an AQI of 38.
In Fallbrook, California, PM2.5 is the most frequently found pollutant.
When air quality in Fallbrook, California is compromised, staying indoors and wearing a mask can reduce health risks.
Fallbrook, California currently has a PM2.5 concentration of 7.473 μg/m3.
Fallbrook, California currently has a PM10 concentration of 32.44 μg/m3.
The current carbon monoxide (CO) level in Fallbrook, California is 0.423 ppm.
The current sulfur dioxide (SO2) concentration in Fallbrook, California is 0.401 ppb.
Fallbrook, California currently has an ozone (O3) concentration of 14.473 ppm.
The current level of nitrogen dioxide (NO2) in Fallbrook, California is 21.872 ppb.
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