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

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.47 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.93 μg/m³
0
55
155
255
425
605+
39.52 ppb
0
55
71
86
201
201+
0.64 ppb
0
36
76
186
605
1005+
6.59 ppb
0
54
101
361
1250
2050+
0.38 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 54
Moderate
8.77μg/m³
PM2.5
61.23μg/m³
PM10
41.42ppb
O3
0.87ppb
SO2
13.52ppb
NO2
0.37ppm
CO
AQI 53
Moderate
9.89μg/m³
PM2.5
58.85μg/m³
PM10
41.38ppb
O3
0.89ppb
SO2
13.70ppb
NO2
0.36ppm
CO
AQI 26
Good
3.03μg/m³
PM2.5
12.21μg/m³
PM10
28.04ppb
O3
0.98ppb
SO2
13.96ppb
NO2
0.36ppm
CO
AQI 38
Good
7.07μg/m³
PM2.5
28.64μg/m³
PM10
41.38ppb
O3
0.93ppb
SO2
13.20ppb
NO2
0.36ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
24.98μg/m³
PM10
22.56ppb
O3
0.17ppb
SO2
10.08ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.69μg/m³
PM2.5
58.90μg/m³
PM10
29.63ppb
O3
0.62ppb
SO2
8.30ppb
NO2
0.31ppm
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 02:00:00, 2026-10-07.
The best air quality in Sioux City, Iowa was observed at 03:00:00 on 2026-10-06.
The air quality in Sioux City, Iowa right now is Moderate, with an AQI of 52.
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 9.96 μg/m3.
Sioux City, Iowa currently has a PM10 concentration of 43.952 μg/m3.
The current carbon monoxide (CO) level in Sioux City, Iowa is 0.211 ppm.
The current sulfur dioxide (SO2) concentration in Sioux City, Iowa is 0.428 ppb.
Sioux City, Iowa currently has an ozone (O3) concentration of 24.961 ppm.
The current level of nitrogen dioxide (NO2) in Sioux City, Iowa is 14.476 ppb.
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