Listed below are the Air Quality Index (AQI) calendars which use the 2008 standard of 75 ppb (years 2008-2015).
AQI calendars graphically present the maximum daily eight-hour ozone AQI values for April-October. The Environmental Protection Agency (EPA) AQI conversion calculator is used to convert daily maximum eight-hour ozone averages into an AQI assigned by color-coded general health categories. An AQI of 100 corresponds to the 2008 eight-hour ozone standard. Any value greater than that is considered to be unhealthy.