* WHAT. Heat index values up to 103. * WHERE. Portions of northern Connecticut, eastern and southeastern Massachusetts, and northern Rhode Island. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 98. * WHERE. In Massachusetts, Northern Worcester MA, Southern Bristol MA, and Southern Plymouth MA Counties. In Rhode Island, Newport RI and Washington RI Counties. * WHEN. Until 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 101. * WHERE. Southern Worcester MA, Central Middlesex MA, Northern Middlesex MA, Southeast Middlesex MA, Suffolk MA, Eastern Essex MA, Western Essex MA, Eastern Franklin MA, Eastern Hampden MA, and Eastern Hampshire MA Counties. * WHEN. Until 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 99. * WHERE. In Connecticut, Northern Middlesex, Northern New London, Southern Middlesex, and Southern New Haven Counties. In New York, Northeast Suffolk, Southern Nassau, and Southwest Suffolk Counties. * WHEN. Until 10 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 95 expected. * WHERE. In Maine, Interior Waldo, Kennebec, and Coastal Cumberland Counties. In New Hampshire, Cheshire County. * WHEN. From noon to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the first Heat Advisory, heat index values up to 100. For the second Heat Advisory, heat index values up to 100 expected. * WHERE. Portions of southwest and western Maine and central, northern, and southern New Hampshire. * WHEN. For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from noon to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 98 expected. * WHERE. Portions of southwest and western Maine and central, northern, and southern New Hampshire. * WHEN. From noon to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 97 expected. * WHERE. In Maine, Interior Waldo, Kennebec, and Coastal Cumberland Counties. In New Hampshire, Cheshire County. * WHEN. From noon to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Ground Level Ozone, from 11 AM to 11 PM EDT Tuesday. An Air Quality Action day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection website at: https://portal.ct.gov/deep

* WHAT. Heat index values up to 95 to 100. * WHERE. In Connecticut, Northern Middlesex, Northern New Haven, Northern New London, Southern Middlesex, and Southern New Haven Counties. In New York, Northeast Suffolk, Southern Nassau, and Southwest Suffolk Counties. * WHEN. Until 10 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 99. * WHERE. In Massachusetts, Southern Bristol and Southern Plymouth Counties. In Rhode Island, Newport and Washington Counties. * WHEN. Until 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 101. * WHERE. Portions of northern Connecticut, eastern and southeastern Massachusetts, and northern Rhode Island. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 100. * WHERE. Portions of central, eastern, northeastern, and western Massachusetts. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.