Stay updated with real-time air quality in Oceanside, 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)
51
Moderate
Oceanside, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.16 μg/m³
0
55
155
255
425
605+
55.09 ppb
0
55
71
86
201
201+
0.74 ppb
0
36
76
186
605
1005+
2.39 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Very high
Oceanside, California
Oceanside, California
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AQI 51
Moderate
8.20μg/m³
PM2.5
27.18μg/m³
PM10
55.12ppb
O3
0.74ppb
SO2
2.38ppb
NO2
0.32ppm
CO
AQI 51
Moderate
8.30μg/m³
PM2.5
28.16μg/m³
PM10
55.42ppb
O3
0.74ppb
SO2
2.65ppb
NO2
0.31ppm
CO
AQI 64
Moderate
8.63μg/m³
PM2.5
34.04μg/m³
PM10
59.34ppb
O3
0.74ppb
SO2
2.26ppb
NO2
0.31ppm
CO
AQI 64
Moderate
8.11μg/m³
PM2.5
33.18μg/m³
PM10
59.41ppb
O3
0.73ppb
SO2
3.90ppb
NO2
0.31ppm
CO
AQI 67
Moderate
8.19μg/m³
PM2.5
33.18μg/m³
PM10
60.13ppb
O3
0.73ppb
SO2
2.34ppb
NO2
0.31ppm
CO
AQI 67
Moderate
7.52μg/m³
PM2.5
32.37μg/m³
PM10
60.40ppb
O3
0.74ppb
SO2
2.10ppb
NO2
0.31ppm
CO
Air quality data and pollutant measurements for California, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Oceanside, California is updated every hour.
The worst air quality in Oceanside, California in the last 24 hours was observed at 01:00:00 on 2026-04-19.
In the last 24 hrs, the best air quality in Oceanside, California was observed at 09:00:00 on 2026-04-18.
The current air quality in Oceanside, California is 51, categorized as Moderate based on real-time data.
The most common pollutant in Oceanside, California is O3.
If the air quality in Oceanside, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Oceanside, California is 8.208 μg/m3.
The current PM10 concentration at Oceanside, California is 27.163 μg/m3.
The current carbon monoxide (CO) concentration at Oceanside, California is 0.315 ppm.
The current sulfur dioxide (SO2) concentration at Oceanside, California is 0.743 ppb.
The current ozone (O3) concentration at Oceanside, California is 55.091 ppm.
The current nitrogen dioxide (NO2) concentration at Oceanside, California is 2.393 ppb.
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