The reflecting pool offers no reprieve from the heat.
An advocacy group for the homeless is warning residents in the Washington area to be alert for homeless people who may need help in the extreme heat.
The group Miriam's Kitchen said Tuesday that the heat poses a serious health risk for homeless and elderly people, including dehydration, heat stroke and heat exhaustion.
The charity says local businesses and residents should call 911 if they see someone experiencing an emergency because of the heat.
The heat index is expected to be well in excess of 100 degrees through the remainder of the week, according to NBC Washington.
There is also a hyperthermia hotline to call if someone needs a ride to the city's cooling centers. It is 1-800-535-7252.