Summer officially begins tonight, and it's hitting New Canaan with sizzling temperatures and air quality concerns.

The National Weather Service has issued a heat advisory across the state extending into tonight, or in some cases into Thursday evening. Temperatures will be in the 90s inland, and if you combine that with high humidity we could see heat index values exceed 100 degrees.

First Selectman Rob Mallozzi said town officials and the Office of Emergency Management will be monitoring the situation all day with no issues arising as of 2:30 p.m.

The Connecticut Department of Energy and Environmental Protection is forecasting unhealthy air quality for "sensitive groups" in Fairfield, New Haven, Middlesex and New London counties.

According to the federal website AirNow.gov, "unhealthy for sensitive groups" means "people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air."

People are urged to stay inside in air conditioned rooms, avoid strenuous activity, and drink plenty of water to stay hydrated.

More Information

Fact box