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MOST ACCURATE FORECAST: First triple-digits of 2025 coming to Phoenix!

Phoenix is heating up fast this week with triple-digit temperatures expected tomorrow! High pressure is building in from the southwest, keeping our forecast dry and temperatures on the rise. By the end of the week, we'll be around 10 to 15 degrees above normal and flirting with daily heat records across Arizona.

By: Amber Sullins

Posted 10:30 AM, Apr 09, 2025

and last updated 4:45 AM, Apr 10, 2025

PHOENIX — Phoenix is heating up fast with our first triple-digits of the year expected on Thursday.

On average, Phoenix sees its first 100-degree day in early May, so this early-season heat comes with a minor to moderate risk of heat exhaustion or heat stroke, especially for children, seniors and outdoor workers.

Stay hydrated, limit your time outside in the afternoon, and never leave kids or pets in your car for any amount of time.

Phoenix could tie or even break the record high of 100 degrees on Thursday, set in 2018, and potentially tie the record for the fourth earliest triple digit day of the year.

The daily heat records of 99 degrees on Friday and Saturday could be broken too as temperatures continue in the low 100s.

High pressure is bringing the heat, but it's also leading to stagnant air which allows pollution to build up.

Another Ozone High Pollution Advisory is in effect on Thursday in the Valley.

If you have asthma, COPD, or any other respiratory issue, limit your time outside in the afternoon hours or you may have difficulty breathing.

Exposure to ozone can increase the number and severity of asthma attacks, cause or aggravate bronchitis or other lung disease, and reduce the body's ability to fight infection.

Kids, older adults and anyone trying to exercise outside may experience health impacts from this ozone pollution, too. Symptoms may include itchy eyes, nose and throat, wheezing, coughing, shortness of breath, chest pain and upper respiratory issues.

To prevent the pollution problem from getting worse, try to carpool, take public transportation or work from home. Even refueling your vehicle after dark will help.

Air quality will improve and temperatures will drop over the weekend as winds pick up.

Those stronger winds could increase fire danger across our state, especially across the high country where peak gusts could hit 40 mph.

Here in the Valley, expect breezes Saturday and Sunday with gusts near 25 mph.

Temperatures will drop back into the low to mid 90s heading into next week.