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)
45
Good
Casa Grande, Arizona
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.66 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.17 μg/m³
0
55
155
255
425
605+
49.09 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
19.31 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Casa Grande, Arizona
Casa Grande, Arizona
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AQI 44
Good
7.17μg/m³
PM2.5
31.56μg/m³
PM10
47.14ppb
O3
0.43ppb
SO2
14.11ppb
NO2
0.36ppm
CO
AQI 44
Good
3.82μg/m³
PM2.5
17.07μg/m³
PM10
46.83ppb
O3
0.42ppb
SO2
14.37ppb
NO2
0.37ppm
CO
AQI 45
Good
4.99μg/m³
PM2.5
22.98μg/m³
PM10
48.74ppb
O3
0.51ppb
SO2
20.01ppb
NO2
0.39ppm
CO
AQI 45
Good
3.99μg/m³
PM2.5
18.12μg/m³
PM10
48.70ppb
O3
0.51ppb
SO2
21.34ppb
NO2
0.27ppm
CO
AQI 46
Good
5.84μg/m³
PM2.5
26.13μg/m³
PM10
49.96ppb
O3
0.45ppb
SO2
19.75ppb
NO2
0.35ppm
CO
AQI 49
Good
9.04μg/m³
PM2.5
18.35μg/m³
PM10
49.26ppb
O3
0.40ppb
SO2
13.76ppb
NO2
0.36ppm
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 2025-10-21.
In the last 24 hrs, the best air quality in Casa Grande, Arizona was observed at 04:00:00 on 2025-10-21.
The current air quality in Casa Grande, Arizona is 45, categorized as Good based on real-time data.
The most common pollutant in Casa Grande, Arizona is O3.
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 3.662 μg/m3.
The current PM10 concentration at Casa Grande, Arizona is 19.168 μg/m3.
The current carbon monoxide (CO) concentration at Casa Grande, Arizona is 0.218 ppm.
The current sulfur dioxide (SO2) concentration at Casa Grande, Arizona is 0.328 ppb.
The current ozone (O3) concentration at Casa Grande, Arizona is 49.087 ppm.
The current nitrogen dioxide (NO2) concentration at Casa Grande, Arizona is 19.307 ppb.
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