Thank you for visiting the YorkCounts Indicators website.
We are in the process of updating the site with new 2016 data. Look for the update being finalized in the new few weeks.
Air quality is tracked daily based on ozone levels and particle pollution. Shown on the chart, orange and green days are unhealthy for sensitive groups, red and purple days are unhealthy for all. 2011-2013 shows stabilization of high ozone days, with a slight increase in particle pollution for sensitive groups.