DEEP: Ozone Forecast for the Regulated Community

Ozone Forecast for the Regulated Community

The ozone forecast for Monday, October 23, 2017 is:

Not Entered Yet

Not Available

Under regulations, permits and orders administered by the Bureau of Air Management, the regulated community (e.g., industry) uses the ozone forecast to determine whether certain operating restrictions apply for the forecasted day.  These restrictions ensure lower emissions of nitrogen oxides (NOx), which contribute to the development of ozone on high ozone days.

  • Owners of most emergency engines (usually diesel powered generators) use the ozone forecast to determine whether they can operate for routine, scheduled testing or maintenance.  Such operations are restricted on days forecasted to have ozone air quality index (AQI) levels classified as unhealthy for sensitive groups (USG, or worse) anywhere in Connecticut.
  • A limited number of sources operate under schedule modification orders that prohibit operation on days forecasted to reach the USG (or worse) AQI level for ozone.

The current ozone forecast for the regulated community is provided through a pre-recorded telephone message (860-424-4167), via email provided to the affected sources and on CTDEEP’s primary AQI webpage.  The web page provides the forecast as a traffic light indicator, with red meaning restrictions are in place for the forecasted day and green meaning that restrictions are not in place for the forecasted day.