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)
12
Good
Casa Grande, Arizona
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.81 μg/m³
0
55
155
255
425
605+
13.01 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
7.55 ppb
0
54
101
361
1250
2050+
0.17 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 22
Good
3.56μg/m³
PM2.5
17.19μg/m³
PM10
14.24ppb
O3
0.74ppb
SO2
6.30ppb
NO2
0.15ppm
CO
AQI 22
Good
3.80μg/m³
PM2.5
17.01μg/m³
PM10
14.95ppb
O3
0.74ppb
SO2
6.06ppb
NO2
0.14ppm
CO
AQI 14
Good
1.92μg/m³
PM2.5
9.10μg/m³
PM10
14.51ppb
O3
0.78ppb
SO2
6.81ppb
NO2
0.16ppm
CO
AQI 14
Good
1.86μg/m³
PM2.5
8.74μg/m³
PM10
15.21ppb
O3
0.79ppb
SO2
6.75ppb
NO2
0.12ppm
CO
AQI 16
Good
3.11μg/m³
PM2.5
14.70μg/m³
PM10
14.48ppb
O3
0.75ppb
SO2
6.46ppb
NO2
0.15ppm
CO
AQI 38
Good
6.71μg/m³
PM2.5
26.95μg/m³
PM10
15.27ppb
O3
0.73ppb
SO2
6.17ppb
NO2
0.14ppm
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 04:00:00 on 2026-09-07.
In the last 24 hrs, the best air quality in Casa Grande, Arizona was observed at 10:00:00 on 2026-09-07.
The current air quality in Casa Grande, Arizona is 12, 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 0.917 μg/m3.
The current PM10 concentration at Casa Grande, Arizona is 10.81 μg/m3.
The current carbon monoxide (CO) concentration at Casa Grande, Arizona is 0.173 ppm.
The current sulfur dioxide (SO2) concentration at Casa Grande, Arizona is 0.73 ppb.
The current ozone (O3) concentration at Casa Grande, Arizona is 13.01 ppm.
The current nitrogen dioxide (NO2) concentration at Casa Grande, Arizona is 7.553 ppb.
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