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

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.31 μg/m³
0
55
155
255
425
605+
28.64 ppb
0
55
71
86
201
201+
0.68 ppb
0
36
76
186
605
1005+
7.40 ppb
0
54
101
361
1250
2050+
0.40 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Seaside, California
Seaside, California
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AQI 56
Moderate
12.40μg/m³
PM2.5
34.76μg/m³
PM10
24.84ppb
O3
0.68ppb
SO2
7.68ppb
NO2
0.44ppm
CO
AQI 24
Good
3.27μg/m³
PM2.5
15.26μg/m³
PM10
26.07ppb
O3
0.68ppb
SO2
9.48ppb
NO2
0.44ppm
CO
AQI 56
Moderate
12.40μg/m³
PM2.5
34.76μg/m³
PM10
24.84ppb
O3
0.68ppb
SO2
7.68ppb
NO2
0.44ppm
CO
AQI 31
Good
2.95μg/m³
PM2.5
12.26μg/m³
PM10
32.68ppb
O3
0.69ppb
SO2
7.97ppb
NO2
0.46ppm
CO
AQI 30
Good
2.88μg/m³
PM2.5
11.95μg/m³
PM10
32.13ppb
O3
0.69ppb
SO2
8.04ppb
NO2
0.46ppm
CO
AQI 24
Good
2.70μg/m³
PM2.5
7.34μg/m³
PM10
25.87ppb
O3
0.68ppb
SO2
9.57ppb
NO2
0.47ppm
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 Seaside, California is updated every hour.
The worst air quality in Seaside, California in the last 24 hours was observed at 06:00:00 on 2026-10-22.
In the last 24 hrs, the best air quality in Seaside, California was observed at 01:00:00 on 2026-10-22.
The current air quality in Seaside, California is 27, categorized as Good based on real-time data.
The most common pollutant in Seaside, California is O3.
If the air quality in Seaside, California is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Seaside, California is 3.553 μg/m3.
The current PM10 concentration at Seaside, California is 20.313 μg/m3.
The current carbon monoxide (CO) concentration at Seaside, California is 0.401 ppm.
The current sulfur dioxide (SO2) concentration at Seaside, California is 0.678 ppb.
The current ozone (O3) concentration at Seaside, California is 28.645 ppm.
The current nitrogen dioxide (NO2) concentration at Seaside, California is 7.403 ppb.
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