A historic heatwave is gripping the Southwest, with Arizona communities reporting record-breaking March temperatures. The town of Martinez Lake hit a staggering 110 degrees Fahrenheit, marking the highest March temperature ever recorded in the U.S. Phoenix also experienced extreme heat, with the city reaching its earliest 105-degree day and smashing previous records with temperatures topping at 102 degrees. The effects of the intense heat are evident, as popular hiking trails in Phoenix have been closed for safety and outdoor events, including weddings, faced last-minute adjustments. Local authorities are on high alert, prepared for heat rescues, and special measures have been implemented for vulnerable populations, such as extended hours for day centers catering to homeless seniors. As the region endures this relentless heat, discussions about climate change and its impact on weather extremes are intensifying.