Thursday July 14 – If you had fog this morning, that is a signal of the high moisture content in the air. That is the main part of this uncomfortable air mass. The dew point, or temperature the moisture condenses and forms the fog is in the mid 70s. So when the actual air temperature reaches the mid to upper 90s, it will be very uncomfortable. When the heat index reaches over 100°F, that is when your body has difficulty cooling off. Thus- A Heat Advisory as been issued for this afternoon until 8 PM. The main area will be along and south of I-95.