Warning that the extreme heat conditions now being experienced in Boston "can cause regular activities to quickly become dangerous situations,” Mayor Menino this afternoon extended a heat advisory for another day. Temperatures eclipsed the 100 degree mark on Friday afternoon as the region suffered through day four of a July heat wave.

Menino extended the city's plan to offer extended hours for city-run pools and cooling centers through 9 p.m. on Saturday night. For questions about heat-related city services, residents should call the Mayor's 24-Hour Hotline at 617-635-4500. Comprehensive heat safety tips and resources are available on the city website at www.cityofboston.gov/heat.

The following BCYF sites in Dorchester and Mattapan are available as Cooling Centers for Saturday, July 23rd from 9 a.m. to 9 p.m. unless noted otherwise:

Gallivan Community Center 61 Woodruff Way, Mattapan 635-5252

Holland Community Center* 85 Olney Street, Dorchester 635-5144

Leahy-Holloran CC (Murphy School)*1 Worrell Street, Dorchester 635-5159

Madison Park Community Center** 55 New Dudley Street, Roxbury 635-5209

Mildred Avenue Community Center* 5 Mildred Ave., Mattapan 635-1328

*swimming pool

**Pool only, no air conditioned space