* WHAT. Heat index values of 95 to 104 degrees. * WHERE. Portions of northwestern Connecticut, western Massachusetts, eastern New York, and southern Vermont. * WHEN. Until 8 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Highest heat indices are expected at elevations below 1000 feet. If coverage of heat indices in excess of 105 degrees increases, then upgrades to excessive heat warnings may be needed.

The Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Ground Level Ozone, until 11 PM EDT this evening. 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. Unhealthy levels of ozone can cause throat irritation, coughing, chest pain, shortness of breath, increased susceptibility to respiratory infection, and aggravation of asthma and other respiratory ailments, especially with children and the elderly. These symptoms are worsened by outdoor exercise and heavy activity. * Reduce prolonged or heavy exertion. * Take more breaks, do less intense activities. * Watch for symptoms such as coughing or shortness of breath. * People with asthma should follow their asthma action plans and keep quick relief medicine handy. * Schedule outdoor activities in the morning when ozone levels are lower. 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, until 11 PM EDT this evening. 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

* WHAT. Heat index values up to 100. * 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 101. * WHERE. Portions of central, eastern, northeastern, southeastern, and western Massachusetts and northern Rhode Island. * WHEN. Until 7 PM EDT Thursday. * 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: Nassau, 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.

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, Until 11 PM this evening and then 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

* WHAT. Heat index values of 95 to 104 degrees. * WHERE. Portions of northwestern Connecticut, western Massachusetts, eastern New York, and southern Vermont. * WHEN. Until 8 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Highest heat indices are expected at elevations below 1000 feet.

* WHAT. Heat index values up to 95 to 100. * WHERE. Northern Fairfield and Northern New Haven Counties. * WHEN. Until 8 PM EDT Thursday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 95 to 100. * WHERE. Northern Middlesex and Northern New London Counties. * WHEN. Until 8 PM EDT Thursday. * 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: Fairfield, New Haven, and Northern Middlesex, from 11 AM to 11 PM EDT Today and 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 Connecticut Department of Environmental Protection has issued an Air Quality Action Day for Ground Level Ozone, from 11 AM this morning to 11 PM EDT this evening. 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 Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, from 11 AM this morning to 11 PM EDT this evening. 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 Wednesday and 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 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 Wednesday. 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