Mayor Tom Richards announced that a heat emergency will be in effect Saturday, extending the Cool Sweep program.

The heat advisories are in effect until 8 p.m. tonight in Niagara, Orleans, Genesee, Monroe, Wayne, Ontario, Seneca, Yates and Livingston counties.

The National Weather service says the heat index values could hit as high as 105 degrees.

People are encouraged to limit their outdoor activities.

The City is extending the Cool Sweep program into branch libraries and recreation centers where residents can stay cool.

The Cool Sweep will be held from 10 a.m. to 6 p.m. Saturday.

The city spray parks will be open from 10 in the morning until 8 at night.

The Cool Sweep hydrant locations are open from noon until 4.

Cool Sweep takes effect every time temperatures are expected to hit 85 degrees or higher.

Library cooling areas:

* Arnett Branch Library, 310 Arnett Blvd.
* Lincoln Branch Library, 851 Joseph Ave.
* Maplewood Branch Library, 1111 Dewey Ave.
* Winton Road Branch Library, 611 N. Winton Road

Recreation Center cooling area:

* Carter Street Gym, 500 Carter Street (air conditioning only).

Cool Sweep Hydrant locations are:

* School No. 22 parking lot, 27 Zimbrich St.;
* School No. 41 parking lot, 279 W. Ridge Road;
* Roxie A. Sinkler Recreation Center, 75 Grover St.;
* Baden Park gateway, Vienna Street.

Spray Park locations are:

* Carter Street Community Center Spray Park, 500 Carter St.;
* Edgerton Community Center Spray Park, 41 Backus St.;
* Fourth and Peck Playground (spray feature only, not a full spray park), corner of

Fourth and Peck streets;

* Humboldt Community Center Spray Park, 1045 Atlantic Ave.;
* Manhattan Square Park (spray feature only, not a full spray park), 25 Manhattan

Square Drive;

* David F. Gantt Community Center, 700 North St.
* Thomas P. Ryan Community Center Spray Park, 530 Webster Ave.;
* Troup Street Park (spray feature only, not a full spray park), Troup and Van Auker streets.

Swimming opportunities also are available at:

* Adams Street Community Center Pool, 85 Adams St., noon to 9 p.m. (Cool Sweep hours), Monday to Friday, 9:30 a.m. to 8:30 p.m.; Saturday, 11 a.m. to 6 p.m.; Sunday, 11 to 1 p.m. and 1 to 5:30 p.m. (regular hours)

* Avenue D Community Center Pool, 200 Avenue D., 10 a.m. to 8 p.m. (Cool Sweep hours), Monday through Friday, 11 a.m. to 8:45 p.m.; Saturday, 11 a.m. to 4:30 p.m. (regular hours)

* Durand Eastman Beach, 1000 Lakeshore Blvd. Lot A only, Lifeguards on duty from 10 a.m. to 8 p.m. (Cool Sweep hours), Sunday to Saturday, 11 a.m. to 7 p.m. (regular hours)

* Flint Street Community Center Pool, 271 Flint St., 10 a.m. to 8 p.m. (Cool Sweep hours), 11 a.m. to 7 p.m. (regular hours)

* Genesee Valley Park Pool, 131 Elmwood Ave., noon to 9 p.m. (Cool Sweep hours), Monday through Friday, 1 to 4:45 p.m., 6 to 8:30 p.m.; Saturday, 10 a.m. to 4:45 p.m., 6 to 8:30 p.m.; Sundays 10 to 4:45 p.m., 6 to 8:30 p.m. (regular hours)

* East High School, 1801 East Main St., Monday-Friday, 9 a.m. to 4:30 p.m. (regular and Cool Sweep hours)

* Northeast/Northwest at Frederick Douglass High School Pool, 940 Fernwood Park, (Tennis Court entrance), Monday-Friday, 9 a.m. to 4:30 p.m. (regular and Cool Sweep hours)

* Wilson Foundation Academy at Madison High School Pool, 200 Genesee St. (Dr. Samuel McCree Way entrance), Monday-Friday, 9 a.m. to 4:30 p.m. (regular and Cool Sweep hours)

* Marshall High School Pool, 180 Ridgeway Ave. (Avis Street entrance), Monday-Friday, 9 a.m. to 4:30 p.m. (regular and Cool Sweep hours)

* Monroe High School Pool, 164 Alexander Street (use Pearl St. entrance) Monday-Friday, 9 a.m. to 4:30 p.m. (regular and Cool Sweep hours)