* WHAT...High temperatures in El Paso and Fremont Counties from 92 to 102 both days. Highs in Pueblo County from 95 to 105 both Saturday and Sunday. * WHERE...Pueblo, El Paso and eastern Fremont Counties, including the cities of Pueblo, Colorado Springs and Canon City. * WHEN...For the first Heat Advisory, from noon to 8 PM MDT Saturday. For the second Heat Advisory, from noon to 8 PM MDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.