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)
52
Moderate
South Sioux City, Nebraska
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
47.03 μg/m³
0
55
155
255
425
605+
49.40 ppb
0
55
71
86
201
201+
0.77 ppb
0
36
76
186
605
1005+
8.83 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
South Sioux City, Nebraska
South Sioux City, Nebraska
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AQI 54
Moderate
11.13μg/m³
PM2.5
52.22μg/m³
PM10
43.77ppb
O3
0.61ppb
SO2
9.93ppb
NO2
0.23ppm
CO
AQI 54
Moderate
11.01μg/m³
PM2.5
53.06μg/m³
PM10
44.23ppb
O3
0.56ppb
SO2
10.50ppb
NO2
0.23ppm
CO
AQI 44
Good
8.22μg/m³
PM2.5
36.07μg/m³
PM10
27.07ppb
O3
0.70ppb
SO2
7.23ppb
NO2
0.23ppm
CO
AQI 52
Moderate
9.80μg/m³
PM2.5
38.03μg/m³
PM10
29.65ppb
O3
0.75ppb
SO2
7.04ppb
NO2
0.24ppm
CO
AQI 46
Good
7.77μg/m³
PM2.5
34.00μg/m³
PM10
50.24ppb
O3
0.35ppb
SO2
0.74ppb
NO2
0.17ppm
CO
AQI 54
Moderate
10.82μg/m³
PM2.5
45.88μg/m³
PM10
45.87ppb
O3
0.59ppb
SO2
7.67ppb
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 09:00:00 on 2026-10-22.
The best air quality in South Sioux City, Nebraska was recorded at 03:00:00 on 2026-10-22.
The real-time air quality index in South Sioux City, Nebraska is 52, currently categorized as Moderate.
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 10.439 μg/m3.
The current PM10 levels in South Sioux City, Nebraska are 47.027 μg/m3.
The current carbon monoxide (CO) level in South Sioux City, Nebraska is 0.208 ppm.
The current sulfur dioxide (SO2) levels in South Sioux City, Nebraska are 0.772 ppb.
The current ozone (O3) levels at South Sioux City, Nebraska is 49.399 ppm.
The current nitrogen dioxide (NO2) levels at South Sioux City, Nebraska is 8.827 ppb.
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