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)
44
Good
Mason City, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.35 μg/m³
0
55
155
255
425
605+
48.01 ppb
0
55
71
86
201
201+
0.06 ppb
0
36
76
186
605
1005+
1.79 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Mason City, Iowa
Mason City, Iowa
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AQI 49
Good
8.53μg/m³
PM2.5
37.49μg/m³
PM10
52.56ppb
O3
0.05ppb
SO2
1.78ppb
NO2
0.15ppm
CO
AQI 48
Good
5.75μg/m³
PM2.5
24.50μg/m³
PM10
52.14ppb
O3
0.08ppb
SO2
1.63ppb
NO2
0.15ppm
CO
AQI 52
Moderate
9.88μg/m³
PM2.5
44.28μg/m³
PM10
33.16ppb
O3
1.29ppb
SO2
1.84ppb
NO2
0.32ppm
CO
AQI 52
Moderate
9.66μg/m³
PM2.5
44.47μg/m³
PM10
34.89ppb
O3
1.55ppb
SO2
2.32ppb
NO2
0.32ppm
CO
AQI 52
Moderate
10.19μg/m³
PM2.5
44.97μg/m³
PM10
35.54ppb
O3
1.51ppb
SO2
2.31ppb
NO2
0.31ppm
CO
AQI 52
Moderate
9.64μg/m³
PM2.5
42.71μg/m³
PM10
33.79ppb
O3
1.15ppb
SO2
2.49ppb
NO2
0.35ppm
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 01:00:00 on 2026-04-24.
In the last 24 hrs, the best air quality in Mason City, Iowa was observed at 11:00:00 on 2026-04-23.
The current air quality in Mason City, Iowa is 44, 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 6.201 μg/m3.
The current PM10 concentration at Mason City, Iowa is 27.35 μg/m3.
The current carbon monoxide (CO) concentration at Mason City, Iowa is 0.149 ppm.
The current sulfur dioxide (SO2) concentration at Mason City, Iowa is 0.061 ppb.
The current ozone (O3) concentration at Mason City, Iowa is 48.014 ppm.
The current nitrogen dioxide (NO2) concentration at Mason City, Iowa is 1.791 ppb.
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