"Cool Shelters" for seniors are open this week at the Citywide Senior Center at 806 Mass Ave in Central Square and at the Public Health Building at 119 Windsor Street.

The Public Health Building's cool shelter will be open from 9:00 a.m. until 8:00 p.m. for both seniors and parents with small infants.

The Citywide Senior Center, which serves between 100 and 130 seniors each day at its Mass Ave location, will be open for Seniors only

High temperatures can also cause problems for the homeless, according to Jim Stewart, director of the First Church Shelter in West Cambridge.

First Church has 14 beds for men and stays open every night from 6 p.m. until 7 a.m. Stewart keeps the shelter open all morning to “get people off the street” when temperatures exceed 95 degrees. The shelter offers extra water on those days, as well as juice-boxes that guests can take to their jobs.

“The risk of dehydration is very high,” Stewart said.

See tips for staying cool during extreme heat at the Cambridge Public Health Department website at: http://www.cambridgepublichealth.org/hot-topic/summer-saftey.php

For more information on "Cool Shelters", call 617-349-6060.