Stay updated with real-time air quality in Atascadero, 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)
39
Good
Atascadero, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.69 μg/m³
0
55
155
255
425
605+
41.79 ppb
0
55
71
86
201
201+
1.26 ppb
0
36
76
186
605
1005+
1.42 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Atascadero, California
Atascadero, California
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AQI 38
Good
4.53μg/m³
PM2.5
21.57μg/m³
PM10
40.92ppb
O3
1.26ppb
SO2
2.17ppb
NO2
0.15ppm
CO
AQI 23
Good
3.94μg/m³
PM2.5
17.12μg/m³
PM10
25.14ppb
O3
1.27ppb
SO2
1.91ppb
NO2
0.15ppm
CO
AQI 60
Moderate
13.81μg/m³
PM2.5
31.40μg/m³
PM10
39.26ppb
O3
1.36ppb
SO2
1.76ppb
NO2
0.15ppm
CO
AQI 27
Good
4.61μg/m³
PM2.5
18.53μg/m³
PM10
26.78ppb
O3
1.27ppb
SO2
1.88ppb
NO2
0.15ppm
CO
AQI 44
Good
8.22μg/m³
PM2.5
20.60μg/m³
PM10
26.37ppb
O3
1.01ppb
SO2
1.15ppb
NO2
0.15ppm
CO
AQI 44
Good
8.09μg/m³
PM2.5
20.38μg/m³
PM10
25.79ppb
O3
0.99ppb
SO2
1.12ppb
NO2
0.15ppm
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 Atascadero, California are available every hour.
Atascadero, California experienced its worst air quality at 08:00:00, 2026-08-23.
The best air quality in Atascadero, California was observed at 05:00:00 on 2026-08-23.
The air quality in Atascadero, California right now is Good, with an AQI of 39.
In Atascadero, California, O3 is the most frequently found pollutant.
When air quality in Atascadero, California is compromised, staying indoors and wearing a mask can reduce health risks.
Atascadero, California currently has a PM2.5 concentration of 3.616 μg/m3.
Atascadero, California currently has a PM10 concentration of 30.687 μg/m3.
The current carbon monoxide (CO) level in Atascadero, California is 0.152 ppm.
The current sulfur dioxide (SO2) concentration in Atascadero, California is 1.263 ppb.
Atascadero, California currently has an ozone (O3) concentration of 41.79 ppm.
The current level of nitrogen dioxide (NO2) in Atascadero, California is 1.421 ppb.
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