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)
52
Moderate
Fallbrook, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.63 μg/m³
0
55
155
255
425
605+
44.54 ppb
0
55
71
86
201
201+
0.52 ppb
0
36
76
186
605
1005+
8.77 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fallbrook, California
Scroll To Air Quality MapLoading...
AQI 30
Good
5.08μg/m³
PM2.5
20.14μg/m³
PM10
31.80ppb
O3
0.60ppb
SO2
8.79ppb
NO2
0.31ppm
CO
AQI 54
Moderate
11.12μg/m³
PM2.5
25.56μg/m³
PM10
41.81ppb
O3
0.64ppb
SO2
6.92ppb
NO2
0.32ppm
CO
AQI 35
Good
5.19μg/m³
PM2.5
22.31μg/m³
PM10
37.89ppb
O3
0.66ppb
SO2
10.06ppb
NO2
0.31ppm
CO
AQI 40
Good
6.19μg/m³
PM2.5
16.14μg/m³
PM10
42.81ppb
O3
0.59ppb
SO2
8.90ppb
NO2
0.32ppm
CO
AQI 40
Good
6.22μg/m³
PM2.5
16.15μg/m³
PM10
42.91ppb
O3
0.59ppb
SO2
8.91ppb
NO2
0.32ppm
CO
AQI 35
Good
3.46μg/m³
PM2.5
20.07μg/m³
PM10
37.85ppb
O3
0.63ppb
SO2
5.01ppb
NO2
0.31ppm
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 09:00:00, 2026-03-03.
The best air quality in Fallbrook, California was observed at 04:00:00 on 2026-03-03.
The air quality in Fallbrook, California right now is Moderate, with an AQI of 52.
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 9.704 μg/m3.
Fallbrook, California currently has a PM10 concentration of 23.627 μg/m3.
The current carbon monoxide (CO) level in Fallbrook, California is 0.306 ppm.
The current sulfur dioxide (SO2) concentration in Fallbrook, California is 0.518 ppb.
Fallbrook, California currently has an ozone (O3) concentration of 44.538 ppm.
The current level of nitrogen dioxide (NO2) in Fallbrook, California is 8.768 ppb.
All Rights Reserved © Ambee Inc. 2025