Forecasted Ozone Exceedance Days

Year 2023

The table below is the current list of forecasted days to have ozone Air Quality Index (AQI) levels of Unhealthy for Sensitive Groups (USG), or worse, anywhere in Connecticut.

Month	Day	Day of the Week	PDF
	Ozone Season Forecasts Start May 1, 2023

*On a day marked with an *, the initial prediction of ozone conditions of "Moderate to Unhealthy for Sensitive Groups", or greater was revised to either "Good", or "Good to Moderate" or "Moderate" by 3 P.M. Therefore, on these days the regulated community is allowed to operate emergency engines, or other regulated equipment, after 3 P.M. on that given day. Any forecast that was "upgraded" that day will not affect the forecast for the regulated community.

2022 Forecasted Unhealthy Ozone Days

2021 Forecasted Unhealthy Ozone Days

2020 Forecasted Unhealthy Ozone Days

2019 Forecasted Unhealthy Ozone Days

2018 Forecasted Unhealthy Ozone Days

2017 Forecasted Unhealthy Ozone Days

2016 Forecasted Unhealthy Ozone Days

2015 Forecasted Unhealthy Ozone Days

2014 Forecasted Unhealthy Ozone Days

2013 Forecasted Unhealthy Ozone Days

2012 Forecasted Unhealthy Ozone Days

2011 Forecasted Unhealthy Ozone Days

2010 Forecasted Unhealthy Ozone Days