Forecasted Ozone Exceedance Days
Year 2025
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 | |
| March | No Forecasted Exceedance Days | - | |
| April | No Forecasted Exceedance Days | - | |
*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" (marked with an **) that day will not affect the forecast for the regulated community.
2024 Forecasted Unhealthy Ozone Days
2023 Forecasted Unhealthy Ozone Days
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
2009 Forecasted Unhealthy Ozone Days
2008 Forecasted Unhealthy Ozone Days
Related Links
Ozone Season Information for the Regulated Community
Daily Air Quality Index Forecast
Content Last Updated May 6, 2025