By Susan Larson
The combination of heat and humidity will cause the heat index to reach 100 degrees by Wednesday afternoon, according to the National Weather Service.
![Heat Is Deadly for People and Pets](https://www.fredericksburgfreepress.com/wp-content/uploads/2015/08/2014-06-Screen-Shot-2014-06-18-at-8.24.40-AM.png)
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By Susan Larson
The combination of heat and humidity will cause the heat index to reach 100 degrees by Wednesday afternoon, according to the National Weather Service.