Stay updated with real-time air quality in Williston, North Dakota 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
Williston, North Dakota
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.78 μg/m³
0
55
155
255
425
605+
29.29 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
1.50 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Williston, North Dakota
Williston, North Dakota
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AQI 27
Good
5.44μg/m³
PM2.5
19.01μg/m³
PM10
29.42ppb
O3
1.27ppb
SO2
2.62ppb
NO2
0.16ppm
CO
AQI 27
Good
5.42μg/m³
PM2.5
11.47μg/m³
PM10
17.98ppb
O3
1.08ppb
SO2
2.00ppb
NO2
0.14ppm
CO
AQI 22
Good
3.83μg/m³
PM2.5
12.00μg/m³
PM10
22.91ppb
O3
0.86ppb
SO2
1.37ppb
NO2
0.18ppm
CO
AQI 22
Good
4.00μg/m³
PM2.5
12.00μg/m³
PM10
24.00ppb
O3
0.70ppb
SO2
1.10ppb
NO2
0.18ppm
CO
AQI 22
Good
3.04μg/m³
PM2.5
12.00μg/m³
PM10
24.21ppb
O3
0.09ppb
SO2
4.06ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.74μg/m³
PM2.5
47.94μg/m³
PM10
29.75ppb
O3
0.08ppb
SO2
3.42ppb
NO2
0.17ppm
CO
Air quality data and pollutant measurements for North Dakota, 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 Williston, North Dakota is updated every hour.
The worst air quality in Williston, North Dakota in the last 24 hours was observed at 08:00:00 on 2025-07-18.
In the last 24 hrs, the best air quality in Williston, North Dakota was observed at 07:00:00 on 2025-07-17.
The current air quality in Williston, North Dakota is 60, categorized as Moderate based on real-time data.
The most common pollutant in Williston, North Dakota is PM2.5.
If the air quality in Williston, North Dakota is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Williston, North Dakota is 14.107 μg/m3.
The current PM10 concentration at Williston, North Dakota is 63.481 μg/m3.
The current carbon monoxide (CO) concentration at Williston, North Dakota is 0.139 ppm.
The current sulfur dioxide (SO2) concentration at Williston, North Dakota is 0.533 ppb.
The current ozone (O3) concentration at Williston, North Dakota is 9.757 ppm.
The current nitrogen dioxide (NO2) concentration at Williston, North Dakota is 3.221 ppb.
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