The National Weather Service in Las Vegas predicts showers, thunderstorms, and cooler temperatures due to tropical moisture, with potential flooding and increased heat risks later in the week.

Sacramento is forecasted to have clear skies and warmer days, with temperatures rising into the lower 90s this week; evenings will have mild lows in the upper 50s.

San Antonio expects high heat with temperatures near 95 degrees and heat indices around 100, with slight chances of rain and thunderstorms throughout the week.

Southern California expects showers and thunderstorms, with increased chances in mountain and desert areas, per NWS San Diego.

The Bay Area's early summer heat is giving way to cooler temperatures and a marine layer, with winds and high seas affecting mariners, and potential impacts on aviation.

The article details mixed weather forecasts and air quality concerns for Dallas, with possible showers and high ozone pollution levels prompting an Ozone Action Day alert.

The National Weather Service predicts sunny and calm weather in Memphis, with temperatures rising to the mid-80s before chances of rain increase by mid-week.

Atlanta's weather forecast predicts sunny days with potential rain, high temperatures in the low to mid-80s, and chances of showers increasing towards the weekend.

The article describes New York's weather as mostly sunny with temperatures rising later in the week, and a chance of showers by the weekend. A high rip current risk is noted for Long Island's coastal waters.

The National Weather Service forecasts showers and thunderstorms for Miami, with a 60% chance of precipitation today and a high of 89°F. There's also a risk of severe weather.

Denver's weather forecast indicates a mix of sun and potential showers with fluctuating temperatures and chances of thunderstorms throughout the week.

Houston faces a hot and stormy week with high temperatures and chances of thunderstorms, amidst warnings of poor air quality and the arrival of Saharan dust that could increase heat.

Philadelphia's forecast predicts a 69°F high with brisk winds today, clearing skies at night. The week ahead will see rising temperatures, reaching the low 90s by Thursday, with a chance of showers and thunderstorms by Friday.