New Fairfield has opened up cooling centers as a Heat Advisory takes effect for today and tomorrow.  The Library and Senior Center are open 10 to 7 and 9 to 4 today.  Tomorrow they will be open 10am to 5 and 9 to 3.  Seniors and those with chronic health problems or mental health conditions are at an increased risk of heat related illness. Homes without air conditioning can be much hotter than outdoor temperatures.  A Heat Advisory is issued when the combination of heat and humidity is expected to make it feel like it is the mid 90s to 100 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time.