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The District’s heat index has officially topped 95 degrees, and the city’s Homeland Security and Emergency Management Agency has issued a hyperthermia alert.

If you see someone in need of help, you can call the hyperthermia hotline at (800) 535-7252 to request transport for the person to one of D.C.’s seven emergency cooling facilities for the homeless or 10 cooling centers for senior citizens. Unlike during the winter hypothermia season, overnight shelter is not guaranteed during the summer.

A heat emergency is declared in D.C. whenever the heat index tops 95 degrees. A complete list of open centers, their locations, and hours of operation is available on the city’s 2015 Emergency Heat Plan.