Phoenix, Ariz. – Sweltering heat and worsening air quality continue to grip the Phoenix metro area, with state officials urging residents to limit outdoor activity through Thursday. Drivers across Maricopa County, especially along I-10, could face reduced visibility and breathing difficulties as ozone levels rise.
According to the Arizona Department of Environmental Quality, an Ozone High Pollution Advisory remains in effect until late Wednesday and may extend into Thursday. The National Weather Service reports highs reaching 104 degrees Thursday, with storms possible by evening. Sensitive groups, including children, older adults, and those with asthma, should avoid strenuous outdoor activities.
Officials recommend carpooling, reducing gasoline-powered equipment use, and shifting errands to later in the day when ozone levels ease. Those with breathing issues should keep medications handy and remain indoors during peak afternoon hours.
Thursday will start mostly sunny, but clouds build by late morning. A 40 percent chance of showers and thunderstorms develops after 11 a.m. Some storms could bring heavy rainfall and lightning, slowing evening commutes on I-10 and Loop 202.
Friday brings another round of scattered storms, with slightly cooler highs near 94. The weekend looks mixed, with sunshine early Saturday before isolated showers return in the afternoon. Sunday warms into the upper 90s with calmer conditions.
Warnings remain in place through Thursday, and additional advisories could follow if ozone levels stay elevated.
Five-Day Forecast for Phoenix, AZ
- Thursday: High 100, storms likely after 11 a.m.
- Friday: High 94, scattered storms possible.
- Saturday: High 96, slight storm chance late.
- Sunday: High 98, mostly sunny.
- Monday: High 102, sunny, calmer winds.




