of Air Quality has the primary responsibility for protecting the health
and welfare of North Dakotans from the harmful effects of air pollution.
The Air Quality Monitoring branch ensures that the ambient
(outside) air quality in
North Dakota is better than the levels required by the state and federal
Ambient Air Quality Standards. To address this responsibility, the
Department operates a network of nine ambient air quality monitors.
to the ambient air quality monitoring sites operated by the Department,
four industrial sources of air pollutants operate air quality monitoring
sites within their immediate spheres of influence. The site locations
selected are based on computer dispersion modeling and prevailing wind
Each year the Department prepares
an annual report on the ambient air quality data complied for the previous
calander year. These and other periodic reports can be found via the links
reports below were prepared specifically for two-sided printing.
Therefore, blank pages will occur in single-sided printed version.
All reports require
Acrobat Reader for viewing.
Annual Reports (*.pdf format)
Each annual report summarizes
all sulfur dioxide, nitrogen dioxide, ozone, ammonia, hydrogen sulfide,
and particulate matter ambient air quality data collected in North Dakota
during that year. Because of the size of the reports, viewing online may
be difficult using dial-up internet connections. If needed, a
printed or electronic copy of a given
report may be requested by contacting the Division of Air Quality.
Quarterly Reports (*.pdf format)
Historical Williston Metals Monitoring Data (*.pdf format)
read our disclaimer before viewing the
historical Williston metals monitoring data.
Williston Monitoring Data
Transboundary Monitoring Network - Estevan, SK - Burke County,