All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys. Here's what to know.

A heat advisory for Florida's Treasure Coast is in effect from noon through 6 p.m., with heat index values from 109 to 112 possible.

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys. Here's what to know.

Heat index advisories have been issued across Florida, as the National Weather Service expects values between 110-115 throughout the state July 21, creating moderate to extreme heat risk impacts.

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys. Here's what to know.

A temperature above 104ºF. If your dog is showing signs of heat stroke, contact your vet or the nearest emergency vet immediately. In addition to contacting your vet, help your dog cool down.