Stay updated with real-time air quality in South Sioux City, Nebraska 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)
49
Good
South Sioux City, Nebraska
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.82 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.79 μg/m³
0
55
155
255
425
605+
17.04 ppb
0
55
71
86
201
201+
0.97 ppb
0
36
76
186
605
1005+
6.07 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
South Sioux City, Nebraska
South Sioux City, Nebraska
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AQI 49
Good
8.89μg/m³
PM2.5
22.60μg/m³
PM10
17.04ppb
O3
0.97ppb
SO2
6.06ppb
NO2
0.19ppm
CO
AQI 54
Moderate
10.79μg/m³
PM2.5
48.29μg/m³
PM10
11.48ppb
O3
0.21ppb
SO2
3.12ppb
NO2
0.20ppm
CO
AQI 24
Good
3.42μg/m³
PM2.5
15.00μg/m³
PM10
25.99ppb
O3
1.01ppb
SO2
4.42ppb
NO2
0.23ppm
CO
AQI 49
Good
9.06μg/m³
PM2.5
24.83μg/m³
PM10
24.40ppb
O3
1.02ppb
SO2
3.62ppb
NO2
0.24ppm
CO
AQI 52
Moderate
10.28μg/m³
PM2.5
45.03μg/m³
PM10
16.55ppb
O3
0.04ppb
SO2
2.05ppb
NO2
0.18ppm
CO
AQI 49
Good
9.10μg/m³
PM2.5
48.73μg/m³
PM10
15.32ppb
O3
0.73ppb
SO2
4.81ppb
NO2
0.23ppm
CO
Air quality measurements for Nebraska, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for South Sioux City, Nebraska is updated on an hourly basis.
The worst air quality in South Sioux City, Nebraska was recorded at 03:00:00 on 2025-12-07.
The best air quality in South Sioux City, Nebraska was recorded at 11:00:00 on 2025-12-06.
The real-time air quality index in South Sioux City, Nebraska is 49, currently categorized as Good.
The most common pollutant in South Sioux City, Nebraska is PM2.5.
If the air quality in South Sioux City, Nebraska is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in South Sioux City, Nebraska at present are 8.823 μg/m3.
The current PM10 levels in South Sioux City, Nebraska are 26.793 μg/m3.
The current carbon monoxide (CO) level in South Sioux City, Nebraska is 0.167 ppm.
The current sulfur dioxide (SO2) levels in South Sioux City, Nebraska are 0.971 ppb.
The current ozone (O3) levels at South Sioux City, Nebraska is 17.043 ppm.
The current nitrogen dioxide (NO2) levels at South Sioux City, Nebraska is 6.066 ppb.
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