A heat advisory is in effect for the New York City area Wednesday and Thursday, with feels-like temperatures expected to exceed 100 degrees as more storms threaten the forecast. Air quality is also a concern for vulnerable groups.

Temperatures soared into the upper 80s and lower 90s across the region on Wednesday. While it may not seem that the heat was extreme, the oppressive levels of humidity made it

NYC could be in play for another heat wave this week, with the potential for more heavy rain, storms and flash flooding due to the hot and humid conditions.

The subway system, which is more than a century old, is relied on by millions of passengers every day and weaves the city into a cohesive network.

Tropical rainstorm along Gulf Coast; flood threat for the Northeast; storms in the Midwest; dangerous heat from coast-to-coast

The heat advisory includes parts of Delaware, Pennsylvania, New York, Connecticut and New Jersey, where two people died in flooding.