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)
54
Moderate
Mason City, Iowa
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.92 μg/m³
0
55
155
255
425
605+
34.06 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
1.02 ppb
0
54
101
361
1250
2050+
0.17 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 49
Good
8.83μg/m³
PM2.5
39.16μg/m³
PM10
18.05ppb
O3
0.16ppb
SO2
4.31ppb
NO2
0.19ppm
CO
AQI 49
Good
9.10μg/m³
PM2.5
41.38μg/m³
PM10
17.24ppb
O3
0.11ppb
SO2
3.71ppb
NO2
0.18ppm
CO
AQI 24
Good
3.96μg/m³
PM2.5
16.24μg/m³
PM10
26.05ppb
O3
0.74ppb
SO2
2.82ppb
NO2
0.32ppm
CO
AQI 24
Good
3.71μg/m³
PM2.5
14.99μg/m³
PM10
25.54ppb
O3
0.71ppb
SO2
2.70ppb
NO2
0.31ppm
CO
AQI 26
Good
3.01μg/m³
PM2.5
12.06μg/m³
PM10
27.60ppb
O3
0.43ppb
SO2
2.69ppb
NO2
0.34ppm
CO
AQI 38
Good
5.09μg/m³
PM2.5
41.36μg/m³
PM10
13.23ppb
O3
1.10ppb
SO2
3.42ppb
NO2
0.33ppm
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 02:00:00 on 2025-07-20.
In the last 24 hrs, the best air quality in Mason City, Iowa was observed at 11:00:00 on 2025-07-19.
The current air quality in Mason City, Iowa is 33, categorized as Good based on real-time data.
The most common pollutant in Mason City, Iowa is PM2.5.
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 5.833 μg/m3.
The current PM10 concentration at Mason City, Iowa is 26.02 μg/m3.
The current carbon monoxide (CO) concentration at Mason City, Iowa is 0.19 ppm.
The current sulfur dioxide (SO2) concentration at Mason City, Iowa is 0.118 ppb.
The current ozone (O3) concentration at Mason City, Iowa is 29.123 ppm.
The current nitrogen dioxide (NO2) concentration at Mason City, Iowa is 4.072 ppb.
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