Stay updated with real-time air quality in Mason City, Iowa 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)
16
Good
Mason City, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.67 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.05 μg/m³
0
55
155
255
425
605+
16.63 ppb
0
55
71
86
201
201+
0.06 ppb
0
36
76
186
605
1005+
0.95 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Mason City, Iowa
Mason City, Iowa
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AQI 18
Good
1.98μg/m³
PM2.5
8.00μg/m³
PM10
18.82ppb
O3
0.07ppb
SO2
1.03ppb
NO2
0.14ppm
CO
AQI 19
Good
2.26μg/m³
PM2.5
9.44μg/m³
PM10
19.99ppb
O3
0.09ppb
SO2
1.27ppb
NO2
0.14ppm
CO
AQI 38
Good
6.82μg/m³
PM2.5
40.19μg/m³
PM10
17.73ppb
O3
0.22ppb
SO2
2.86ppb
NO2
0.12ppm
CO
AQI 44
Good
8.35μg/m³
PM2.5
38.03μg/m³
PM10
17.92ppb
O3
0.22ppb
SO2
2.76ppb
NO2
0.12ppm
CO
AQI 49
Good
8.68μg/m³
PM2.5
37.92μg/m³
PM10
17.98ppb
O3
0.22ppb
SO2
2.73ppb
NO2
0.12ppm
CO
AQI 18
Good
2.17μg/m³
PM2.5
9.00μg/m³
PM10
19.50ppb
O3
0.11ppb
SO2
1.37ppb
NO2
0.15ppm
CO
Air quality data and pollutant measurements for Iowa, 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 Mason City, Iowa is updated every hour.
The worst air quality in Mason City, Iowa in the last 24 hours was observed at 07:00:00 on 2026-01-22.
In the last 24 hrs, the best air quality in Mason City, Iowa was observed at 03:00:00 on 2026-01-23.
The current air quality in Mason City, Iowa is 16, categorized as Good based on real-time data.
The most common pollutant in Mason City, Iowa is O3.
If the air quality in Mason City, Iowa is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Mason City, Iowa is 2.675 μg/m3.
The current PM10 concentration at Mason City, Iowa is 11.052 μg/m3.
The current carbon monoxide (CO) concentration at Mason City, Iowa is 0.142 ppm.
The current sulfur dioxide (SO2) concentration at Mason City, Iowa is 0.062 ppb.
The current ozone (O3) concentration at Mason City, Iowa is 16.628 ppm.
The current nitrogen dioxide (NO2) concentration at Mason City, Iowa is 0.952 ppb.
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