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)
29
Good
Casa Grande, Arizona
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.13 μg/m³
0
55
155
255
425
605+
31.14 ppb
0
55
71
86
201
201+
0.32 ppb
0
36
76
186
605
1005+
7.53 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Casa Grande, Arizona
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AQI 33
Good
5.75μg/m³
PM2.5
26.50μg/m³
PM10
35.91ppb
O3
0.32ppb
SO2
7.59ppb
NO2
0.18ppm
CO
AQI 36
Good
6.20μg/m³
PM2.5
27.99μg/m³
PM10
38.85ppb
O3
0.31ppb
SO2
7.65ppb
NO2
0.18ppm
CO
AQI 32
Good
3.98μg/m³
PM2.5
17.90μg/m³
PM10
34.71ppb
O3
0.36ppb
SO2
6.92ppb
NO2
0.18ppm
CO
AQI 33
Good
5.99μg/m³
PM2.5
26.06μg/m³
PM10
34.73ppb
O3
0.36ppb
SO2
7.58ppb
NO2
0.20ppm
CO
AQI 35
Good
5.28μg/m³
PM2.5
23.49μg/m³
PM10
37.94ppb
O3
0.33ppb
SO2
6.86ppb
NO2
0.21ppm
CO
AQI 32
Good
4.57μg/m³
PM2.5
22.54μg/m³
PM10
35.08ppb
O3
0.30ppb
SO2
7.05ppb
NO2
0.22ppm
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 11:00:00 on 2026-03-05.
In the last 24 hrs, the best air quality in Casa Grande, Arizona was observed at 01:00:00 on 2026-03-05.
The current air quality in Casa Grande, Arizona is 29, 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 5.298 μg/m3.
The current PM10 concentration at Casa Grande, Arizona is 29.127 μg/m3.
The current carbon monoxide (CO) concentration at Casa Grande, Arizona is 0.183 ppm.
The current sulfur dioxide (SO2) concentration at Casa Grande, Arizona is 0.323 ppb.
The current ozone (O3) concentration at Casa Grande, Arizona is 31.143 ppm.
The current nitrogen dioxide (NO2) concentration at Casa Grande, Arizona is 7.526 ppb.
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