Stay updated with real-time air quality in Sioux 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)
38
Good
Sioux City, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.79 μg/m³
0
55
155
255
425
605+
18.88 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
6.86 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Sioux City, Iowa
Sioux City, Iowa
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AQI 38
Good
6.99μg/m³
PM2.5
20.15μg/m³
PM10
18.88ppb
O3
0.33ppb
SO2
6.87ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.49μg/m³
PM2.5
56.28μg/m³
PM10
12.44ppb
O3
0.15ppb
SO2
3.13ppb
NO2
0.20ppm
CO
AQI 24
Good
4.21μg/m³
PM2.5
18.98μg/m³
PM10
25.99ppb
O3
0.36ppb
SO2
5.70ppb
NO2
0.20ppm
CO
AQI 44
Good
7.53μg/m³
PM2.5
22.37μg/m³
PM10
26.77ppb
O3
0.52ppb
SO2
6.19ppb
NO2
0.20ppm
CO
AQI 56
Moderate
11.51μg/m³
PM2.5
50.97μg/m³
PM10
17.07ppb
O3
0.04ppb
SO2
2.14ppb
NO2
0.18ppm
CO
AQI 52
Moderate
9.98μg/m³
PM2.5
52.51μg/m³
PM10
16.80ppb
O3
0.26ppb
SO2
4.75ppb
NO2
0.20ppm
CO
The air quality data for Iowa, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Sioux City, Iowa are available every hour.
Sioux City, Iowa experienced its worst air quality at 03:00:00, 2025-12-07.
The best air quality in Sioux City, Iowa was observed at 11:00:00 on 2025-12-06.
The air quality in Sioux City, Iowa right now is Good, with an AQI of 38.
In Sioux City, Iowa, PM2.5 is the most frequently found pollutant.
When air quality in Sioux City, Iowa is compromised, staying indoors and wearing a mask can reduce health risks.
Sioux City, Iowa currently has a PM2.5 concentration of 7.121 μg/m3.
Sioux City, Iowa currently has a PM10 concentration of 21.788 μg/m3.
The current carbon monoxide (CO) level in Sioux City, Iowa is 0.188 ppm.
The current sulfur dioxide (SO2) concentration in Sioux City, Iowa is 0.334 ppb.
Sioux City, Iowa currently has an ozone (O3) concentration of 18.875 ppm.
The current level of nitrogen dioxide (NO2) in Sioux City, Iowa is 6.859 ppb.
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