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
4.62 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.14 μg/m³
0
55
155
255
425
605+
22.07 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
1.63 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Atascadero, California
Atascadero, California
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AQI 23
Good
3.89μg/m³
PM2.5
16.95μg/m³
PM10
24.85ppb
O3
0.44ppb
SO2
2.23ppb
NO2
0.12ppm
CO
AQI 27
Good
4.91μg/m³
PM2.5
18.31μg/m³
PM10
23.00ppb
O3
0.43ppb
SO2
2.35ppb
NO2
0.12ppm
CO
AQI 44
Good
7.69μg/m³
PM2.5
16.25μg/m³
PM10
22.48ppb
O3
0.52ppb
SO2
2.45ppb
NO2
0.12ppm
CO
AQI 27
Good
5.11μg/m³
PM2.5
18.21μg/m³
PM10
22.96ppb
O3
0.44ppb
SO2
2.33ppb
NO2
0.12ppm
CO
AQI 38
Good
7.01μg/m³
PM2.5
24.53μg/m³
PM10
22.75ppb
O3
0.53ppb
SO2
2.63ppb
NO2
0.12ppm
CO
AQI 38
Good
7.03μg/m³
PM2.5
25.00μg/m³
PM10
22.74ppb
O3
0.53ppb
SO2
2.63ppb
NO2
0.12ppm
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, 2026-06-08.
The best air quality in Atascadero, California was observed at 07:00:00 on 2026-06-09.
The air quality in Atascadero, California right now is Good, with an AQI of 27.
In Atascadero, California, PM2.5 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 4.621 μg/m3.
Atascadero, California currently has a PM10 concentration of 14.137 μg/m3.
The current carbon monoxide (CO) level in Atascadero, California is 0.116 ppm.
The current sulfur dioxide (SO2) concentration in Atascadero, California is 0.435 ppb.
Atascadero, California currently has an ozone (O3) concentration of 22.068 ppm.
The current level of nitrogen dioxide (NO2) in Atascadero, California is 1.627 ppb.
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