* WHAT. Heat index values up to 102. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Eastern Hampden MA, Eastern Hampshire MA, Western Hampden MA, and Western Hampshire MA Counties. * WHEN. Until 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 96. * WHERE. Northern Fairfield and Northern New Haven Counties. * WHEN. Until 6 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 95. * WHERE. Northern Middlesex and Northern New London Counties. * WHEN. Until 6 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 98 expected. * WHERE. In Connecticut, Southern Fairfield County. In New York, Southern Westchester County. * WHEN. From noon Friday to 6 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Southern Middlesex and Southern New London, from 11 AM to 11 PM Friday. Ground level ozone may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at: https://www.ct.gov/deep/aqi

The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: New York, Bronx, Kings, Queens, Richmond, Westchester, Rockland, Orange, and Putnam, Until 11 PM this evening and then 11 AM to 11 PM Friday. Ground level ozone may approach or exceed unhealthy standards. Air Quality Index values for ground level ozone in outdoor air are predicted to be greater than 100. The New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with pre-existing respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. A toll free air quality hotline has been established so New York residents can stay informed on the air quality situation. The toll free number is: 1 800 5 3 5, 1 3 4 5.

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Northern Fairfield, Northern New Haven, and Northern Middlesex, Until 11 PM this evening. Ground level ozone may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at: https://www.ct.gov/deep/aqi

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Southern Fairfield and Southern New Haven Until 11 PM this evening and then 11 AM to 11 PM Friday. Ground level ozone may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at: https://www.ct.gov/deep/aqi

* WHAT. Heat index values up to 104 this afternoon and between 95 and 100 degrees. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Eastern Hampden MA, Eastern Hampshire MA, Western Hampden MA, and Western Hampshire MA Counties. * WHEN. Until 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values 95 to 104 degrees. * WHERE. Portions of northwestern Connecticut, western Massachusetts, east central and eastern New York, and southern Vermont. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values of 95 to 100 degrees. * WHERE. In Connecticut, Southern Litchfield County. In New York, Eastern Dutchess, Eastern Ulster, and Western Dutchess Counties. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: New York, Bronx, Kings, Queens, Richmond, Westchester, Rockland, Orange, and Putnam, From 11 AM to 11 PM on both Thursday and Friday. Ground level ozone may approach or exceed unhealthy standards. Air Quality Index values for ground level ozone in outdoor air are predicted to be greater than 100. The New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with pre-existing respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. A toll free air quality hotline has been established so New York residents can stay informed on the air quality situation. The toll free number is: 1 800 5 3 5, 1 3 4 5.

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, and Northern Middlesex, From 11 AM to 11 PM on Thursday. Ground level ozone may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at: https://www.ct.gov/deep/aqi

The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Ground Level Ozone, from 11 AM to 11 PM EDT Thursday. 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

The Rhode Island Department of Environmental Management has issued an Air Quality Action Day for Ground Level Ozone, from 11 AM to 11 PM EDT Thursday. 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 Rhode Island Department of Environmental Management website at: https://dem.ri.gov/

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, from 11 AM to 11 PM EDT Thursday. An Air Quality Alert means that Ground Level Ozone concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/orgs/massachusetts-department-of-environmental- protection

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, and Northern Middlesex, from 11 AM to 11 PM EDT on Thursday. An Air Quality Action Day means that Ground Level Ozone within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi

The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: Nassau, and Suffolk, from 11 AM to 11 PM EDT Thursday. Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern. When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. A toll free air quality hotline has been established so New York residents can stay informed on the air quality situation. The toll free number is 1 800 5 3 5, 1 3 4 5.