Stay updated with real-time air quality in Casa Grande, Arizona 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)
38
Good
Casa Grande, Arizona
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.02 μg/m³
0
55
155
255
425
605+
2.69 ppb
0
55
71
86
201
201+
1.48 ppb
0
36
76
186
605
1005+
11.97 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Casa Grande, Arizona
Casa Grande, Arizona
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AQI 54
Moderate
11.33μg/m³
PM2.5
50.78μg/m³
PM10
5.63ppb
O3
1.37ppb
SO2
18.92ppb
NO2
0.94ppm
CO
AQI 49
Good
9.11μg/m³
PM2.5
41.06μg/m³
PM10
12.44ppb
O3
1.35ppb
SO2
20.47ppb
NO2
0.93ppm
CO
AQI 56
Moderate
11.62μg/m³
PM2.5
52.65μg/m³
PM10
28.14ppb
O3
1.43ppb
SO2
27.45ppb
NO2
0.94ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
41.15μg/m³
PM10
14.19ppb
O3
1.43ppb
SO2
26.91ppb
NO2
1.14ppm
CO
AQI 27
Good
5.30μg/m³
PM2.5
24.14μg/m³
PM10
20.40ppb
O3
1.40ppb
SO2
25.71ppb
NO2
0.95ppm
CO
AQI 49
Good
8.97μg/m³
PM2.5
23.35μg/m³
PM10
17.75ppb
O3
1.35ppb
SO2
13.42ppb
NO2
0.93ppm
CO
Air quality data and pollutant measurements for Arizona, 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 Casa Grande, Arizona is updated every hour.
The worst air quality in Casa Grande, Arizona in the last 24 hours was observed at 03:00:00 on 2025-12-13.
In the last 24 hrs, the best air quality in Casa Grande, Arizona was observed at 10:00:00 on 2025-12-12.
The current air quality in Casa Grande, Arizona is 56, categorized as Moderate based on real-time data.
The most common pollutant in Casa Grande, Arizona is PM2.5.
If the air quality in Casa Grande, Arizona is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Casa Grande, Arizona is 11.726 μg/m3.
The current PM10 concentration at Casa Grande, Arizona is 53.588 μg/m3.
The current carbon monoxide (CO) concentration at Casa Grande, Arizona is 0.939 ppm.
The current sulfur dioxide (SO2) concentration at Casa Grande, Arizona is 1.375 ppb.
The current ozone (O3) concentration at Casa Grande, Arizona is 3.357 ppm.
The current nitrogen dioxide (NO2) concentration at Casa Grande, Arizona is 20.874 ppb.
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