Stay updated with real-time air quality in Carlsbad, 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)
27
Good
Carlsbad, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.07 μg/m³
0
55
155
255
425
605+
18.35 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
10.06 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Carlsbad, California
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AQI 33
Good
5.76μg/m³
PM2.5
21.82μg/m³
PM10
17.05ppb
O3
0.41ppb
SO2
4.03ppb
NO2
0.19ppm
CO
AQI 33
Good
5.75μg/m³
PM2.5
21.82μg/m³
PM10
17.07ppb
O3
0.41ppb
SO2
4.02ppb
NO2
0.19ppm
CO
AQI 22
Good
4.38μg/m³
PM2.5
13.75μg/m³
PM10
17.95ppb
O3
0.42ppb
SO2
12.98ppb
NO2
0.20ppm
CO
AQI 22
Good
4.25μg/m³
PM2.5
10.74μg/m³
PM10
23.21ppb
O3
0.41ppb
SO2
6.66ppb
NO2
0.19ppm
CO
AQI 22
Good
3.94μg/m³
PM2.5
13.92μg/m³
PM10
18.33ppb
O3
0.42ppb
SO2
13.34ppb
NO2
0.15ppm
CO
AQI 22
Good
4.26μg/m³
PM2.5
15.60μg/m³
PM10
21.29ppb
O3
0.41ppb
SO2
6.08ppb
NO2
0.19ppm
CO
Air quality measurements for California, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Carlsbad, California is updated on an hourly basis.
The worst air quality in Carlsbad, California was recorded at 05:00:00 on 2025-07-24.
The best air quality in Carlsbad, California was recorded at 01:00:00 on 2025-07-25.
The real-time air quality index in Carlsbad, California is 33, currently categorized as Good.
The most common pollutant in Carlsbad, California is PM2.5.
If the air quality in Carlsbad, California is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Carlsbad, California at present are 5.525 μg/m3.
The current PM10 levels in Carlsbad, California are 20.519 μg/m3.
The current carbon monoxide (CO) level in Carlsbad, California is 0.186 ppm.
The current sulfur dioxide (SO2) levels in Carlsbad, California are 0.415 ppb.
The current ozone (O3) levels at Carlsbad, California is 17.461 ppm.
The current nitrogen dioxide (NO2) levels at Carlsbad, California is 4.435 ppb.
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