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)
37
Good
Casa Grande, Arizona
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.01 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.20 μg/m³
0
55
155
255
425
605+
35.59 ppb
0
55
71
86
201
201+
5.08 ppb
0
36
76
186
605
1005+
10.16 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Casa Grande, Arizona
Scroll To Air Quality MapLoading...
AQI 44
Good
7.63μg/m³
PM2.5
36.37μg/m³
PM10
33.82ppb
O3
5.26ppb
SO2
10.32ppb
NO2
0.25ppm
CO
AQI 44
Good
7.60μg/m³
PM2.5
35.02μg/m³
PM10
35.03ppb
O3
5.26ppb
SO2
10.36ppb
NO2
0.25ppm
CO
AQI 49
Good
8.54μg/m³
PM2.5
43.35μg/m³
PM10
36.21ppb
O3
4.03ppb
SO2
11.05ppb
NO2
0.26ppm
CO
AQI 44
Good
8.44μg/m³
PM2.5
37.87μg/m³
PM10
31.44ppb
O3
4.09ppb
SO2
12.18ppb
NO2
0.19ppm
CO
AQI 38
Good
6.84μg/m³
PM2.5
30.69μg/m³
PM10
34.98ppb
O3
5.28ppb
SO2
11.42ppb
NO2
0.24ppm
CO
AQI 73
Moderate
21.37μg/m³
PM2.5
54.98μg/m³
PM10
33.10ppb
O3
5.72ppb
SO2
10.50ppb
NO2
0.25ppm
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 2026-03-09.
In the last 24 hrs, the best air quality in Casa Grande, Arizona was observed at 10:00:00 on 2026-03-09.
The current air quality in Casa Grande, Arizona is 37, categorized as Good based on real-time data.
The most common pollutant in Casa Grande, Arizona is PM10.
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 5.014 μg/m3.
The current PM10 concentration at Casa Grande, Arizona is 40.196 μg/m3.
The current carbon monoxide (CO) concentration at Casa Grande, Arizona is 0.191 ppm.
The current sulfur dioxide (SO2) concentration at Casa Grande, Arizona is 5.084 ppb.
The current ozone (O3) concentration at Casa Grande, Arizona is 35.588 ppm.
The current nitrogen dioxide (NO2) concentration at Casa Grande, Arizona is 10.162 ppb.
All Rights Reserved © Ambee Inc. 2025