 A service of Arizona Western College for more than 50 years. Trusted news for Yuma and La Paz counties. An excessive heat warning in effect for both Yuma and Parker through Saturday. Sunny and hot today for Yuma. 113 the high. South winds at 5 to 10 miles per hour. Mostly clear and 90 overnight tonight. Sunny and 114 today for Parker. Southwest winds at 5 to 10 this afternoon. Mostly clear skies and 88 overnight tonight.