A heat advisory is in effect due to the combination of heat and humidity reaching dangerous levels. The advisory is currently set to run through 7 p.m. Friday, but it is likely to be extended into the weekend as the heat continues.

The heat index is expected to climb to 108° or higher, with feels-like temperatures potentially reaching 110 degrees. The actual air temperature is also expected to be hot, reaching 100°.

Further details about the heat advisory and the expected duration of the heat are available from the source, which attributes the heat to a strong ridge of high pressure bringing sinking air that gets compressed and heats up.