Stay updated with real-time air quality in Castaic, 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
Castaic, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.19 μg/m³
0
55
155
255
425
605+
47.84 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
3.92 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Castaic, California
Castaic, California
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AQI 61
Moderate
12.56μg/m³
PM2.5
54.77μg/m³
PM10
57.93ppb
O3
0.64ppb
SO2
6.28ppb
NO2
0.13ppm
CO
AQI 87
Moderate
15.14μg/m³
PM2.5
68.20μg/m³
PM10
66.47ppb
O3
0.62ppb
SO2
7.33ppb
NO2
0.10ppm
CO
AQI 49
Good
8.87μg/m³
PM2.5
39.36μg/m³
PM10
39.67ppb
O3
0.72ppb
SO2
3.91ppb
NO2
0.16ppm
CO
AQI 44
Good
8.37μg/m³
PM2.5
31.09μg/m³
PM10
39.98ppb
O3
0.75ppb
SO2
5.52ppb
NO2
0.16ppm
CO
AQI 58
Moderate
13.00μg/m³
PM2.5
56.53μg/m³
PM10
52.42ppb
O3
0.57ppb
SO2
4.89ppb
NO2
0.16ppm
CO
AQI 44
Good
8.29μg/m³
PM2.5
36.55μg/m³
PM10
39.19ppb
O3
0.72ppb
SO2
4.69ppb
NO2
0.16ppm
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 Castaic, California are available every hour.
Castaic, California experienced its worst air quality at 07:00:00, 2025-06-06.
The best air quality in Castaic, California was observed at 09:00:00 on 2025-06-06.
The air quality in Castaic, California right now is Moderate, with an AQI of 52.
In Castaic, California, PM2.5 is the most frequently found pollutant.
When air quality in Castaic, California is compromised, staying indoors and wearing a mask can reduce health risks.
Castaic, California currently has a PM2.5 concentration of 10.149 μg/m3.
Castaic, California currently has a PM10 concentration of 32.191 μg/m3.
The current carbon monoxide (CO) level in Castaic, California is 0.141 ppm.
The current sulfur dioxide (SO2) concentration in Castaic, California is 0.575 ppb.
Castaic, California currently has an ozone (O3) concentration of 47.84 ppm.
The current level of nitrogen dioxide (NO2) in Castaic, California is 3.915 ppb.
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