Phoenix anticipates extreme heat with highs reaching 113 degrees; slight evening rain chances and gusty winds expected. The National Weather Service advises caution.

Knoxville is set for a wet and stormy day with an 80% chance of rain and thunderstorms, a high of 88 degrees, and possible localized flooding. Clearing skies and heat are expected in the following days.

Portland's weather forecast predicts a week of mostly sunny skies and warm temperatures, with highs ranging from 80 to 89 degrees and occasional gusty winds.

Chicago's weather moderates today with sunny skies and a high of 84 degrees, according to the National Weather Service. The FOX 32 report forecasts a hot Fourth of July.

A study provides new 3D visualizations of glaciers for better understanding their response to global warming, with detailed observations from three glaciers over four years.

Dry thunderstorms might occur in San Francisco, posing fire risks, while the marine layer dominates with typical summer temperatures. A cooling trend is expected with breezy winds.

Las Vegas is set for a cooldown with a drop in temperature, despite a risk of thunderstorms and strong winds, leading to a Red Flag Warning for fire weather zones.

Hawaii's weather, currently experiencing gentle trade winds due to a lingering surface trough, is expected to see a return to stronger easterly winds after mid-week as a high-pressure system moves in, bringing drier conditions.

NWS San Diego predicts a slight cooling in Southern California with a deepening marine layer, before a warming trend resumes by the weekend. Beachgoers should beware of high surf and strong currents.

The NWS forecast predicts a week of sunshine with steady temperatures in the mid-90s, dropping to the low 90s, and clear evenings in the low 60s for Sacramento.

Denver's forecast includes sunny days, potential thunderstorms, and gusty winds. An ozone action alert warns of unhealthy air quality, especially for sensitive groups.

A Heat Advisory is in effect in Salt Lake City until midnight due to expected 100-degree temperatures. People are advised to keep hydrated and avoid direct sunlight.

The National Weather Service forecasts mixed weather for El Paso with scattered showers, thunderstorms, and sunny days. Specific predictions include afternoon showers, varying temperatures and wind directions, with a sizzling weekend ahead.