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)
58
Moderate
Casa Grande, Arizona
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.49 μg/m³
0
55
155
255
425
605+
57.46 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
10.16 ppb
0
54
101
361
1250
2050+
0.22 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 58
Moderate
4.76μg/m³
PM2.5
20.95μg/m³
PM10
57.38ppb
O3
0.61ppb
SO2
7.54ppb
NO2
0.17ppm
CO
AQI 64
Moderate
4.50μg/m³
PM2.5
21.00μg/m³
PM10
59.18ppb
O3
0.61ppb
SO2
6.46ppb
NO2
0.17ppm
CO
AQI 64
Moderate
4.32μg/m³
PM2.5
19.10μg/m³
PM10
59.32ppb
O3
0.65ppb
SO2
12.12ppb
NO2
0.17ppm
CO
AQI 71
Moderate
3.50μg/m³
PM2.5
15.79μg/m³
PM10
61.21ppb
O3
0.64ppb
SO2
11.63ppb
NO2
0.22ppm
CO
AQI 71
Moderate
1.96μg/m³
PM2.5
9.14μg/m³
PM10
61.20ppb
O3
0.62ppb
SO2
9.79ppb
NO2
0.17ppm
CO
AQI 67
Moderate
5.33μg/m³
PM2.5
36.99μg/m³
PM10
60.47ppb
O3
0.60ppb
SO2
6.77ppb
NO2
0.17ppm
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 01:00:00 on 2026-08-12.
In the last 24 hrs, the best air quality in Casa Grande, Arizona was observed at 04:00:00 on 2026-08-11.
The current air quality in Casa Grande, Arizona is 58, categorized as Moderate 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 6.279 μg/m3.
The current PM10 concentration at Casa Grande, Arizona is 21.327 μg/m3.
The current carbon monoxide (CO) concentration at Casa Grande, Arizona is 0.171 ppm.
The current sulfur dioxide (SO2) concentration at Casa Grande, Arizona is 0.622 ppb.
The current ozone (O3) concentration at Casa Grande, Arizona is 56.829 ppm.
The current nitrogen dioxide (NO2) concentration at Casa Grande, Arizona is 9.145 ppb.
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