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)
27
Good
Atascadero, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.08 μg/m³
0
55
155
255
425
605+
28.83 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
1.71 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Atascadero, California
Atascadero, California
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AQI 19
Good
2.53μg/m³
PM2.5
10.82μg/m³
PM10
20.62ppb
O3
0.58ppb
SO2
1.95ppb
NO2
0.29ppm
CO
AQI 28
Good
2.95μg/m³
PM2.5
22.13μg/m³
PM10
29.73ppb
O3
0.59ppb
SO2
2.02ppb
NO2
0.29ppm
CO
AQI 33
Good
6.19μg/m³
PM2.5
9.05μg/m³
PM10
27.68ppb
O3
0.58ppb
SO2
1.82ppb
NO2
0.28ppm
CO
AQI 28
Good
2.94μg/m³
PM2.5
21.57μg/m³
PM10
29.66ppb
O3
0.59ppb
SO2
2.07ppb
NO2
0.29ppm
CO
AQI 26
Good
3.86μg/m³
PM2.5
11.49μg/m³
PM10
27.80ppb
O3
0.58ppb
SO2
1.44ppb
NO2
0.26ppm
CO
AQI 26
Good
3.81μg/m³
PM2.5
11.79μg/m³
PM10
27.91ppb
O3
0.58ppb
SO2
1.41ppb
NO2
0.26ppm
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 09:00:00, 2026-01-23.
The best air quality in Atascadero, California was observed at 04:00:00 on 2026-01-23.
The air quality in Atascadero, California right now is Good, with an AQI of 27.
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 4.179 μg/m3.
Atascadero, California currently has a PM10 concentration of 8.077 μg/m3.
The current carbon monoxide (CO) level in Atascadero, California is 0.287 ppm.
The current sulfur dioxide (SO2) concentration in Atascadero, California is 0.58 ppb.
Atascadero, California currently has an ozone (O3) concentration of 28.828 ppm.
The current level of nitrogen dioxide (NO2) in Atascadero, California is 1.706 ppb.
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