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Trivia Tuesday: How high does the heat index need to be for an Excessive Heat Warning to be issued?

Meteorologist Dylan Robichaud has this weeks Trivia Tuesday question.
Trivia Tuesday: How high does the heat index need to be for an Excessive Heat Warning to be issued?
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Extreme heat is on the way, and the National Weather Service has issued Excessive Heat Warnings for the region.

Today's Trivia Tuesday question:

How high does the heat index need to be for an Excessive Heat Warning to be issued?

A. 105°F+
B. 110°F+
C. 107°F+
D. 99°F+

Answer: B. 110°F+

The heat index—or what the temperature actually feels like—must be 110°F or higher within the next 12–24 hours for an Excessive Heat Warning to be issued.

Keep in mind, the actual air temperature doesn't have to reach 110°F. If the humidity is high enough, it can make it feel like 110°F or hotter, which is what triggers the warning.