AEUS71 KBOX 181319 AQABOX Air Quality Alert Message Relayed by National Weather Service Boston/Norton MA 919 AM EDT Mon May 18 2026 CTZ002-190400- Hartford CT- Including the cities of Hartford and Windsor Locks 919 AM EDT Mon May 18 2026 ...AIR QUALITY ALERT IN EFFECT UNTIL 11 PM EDT THIS EVENING... 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 $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston