Current air quality
The air quality of the City of Madison and Dane County continue to met US EPA air quality guidelines with the vast number of days categorized as "good" quality air; the best possible rating as measured by the Air Quality Index (AQI). In fact, nearly 80% of AQI measurements in Dane County over the past decade were classified as "good"; demonstrating the consistency of Dane County air quality. However, during the days that poor air quality was reported in our community, the primary drivers were high levels of ozone and and/or fine particulate matter.
Additional information is available in the Madison and Dane County Environmental Health Report Card - 2014.
Outdoor air quality information: