Phoenix faces a 110-degree Sunday under an Extreme Heat Warning before monsoon storms bring dust, rain and cooler temperatures next week.

Chicago’s quiet Sunday morning is expected to give way to two rounds of thunderstorms, including a potentially dangerous overnight round with heavy rain. Strong storms could bring damaging winds, hail and flash flooding.

Denver will reach about 97 degrees Sunday under a Heat Advisory, with smoke, gusty shower outflows and a wetter cooldown arriving midweek.