Phoenix will reach the upper 90s Thursday and could top 100°F Friday. City cooling centers and safety tips are available for anyone who needs relief.

Stinknet’s yellow “ball” blooms are back in the Valley. Officials warn homeowners to pull and bag the plants now to limit seeds, fire fuel and allergy problems.

Phoenix will climb into the upper 90s and low 100s this week. Expect gusty winds Saturday and check cooling centers if you need relief.

Phoenix spikes to near 98°F Tuesday with 100°F+ days likely through the week. Cooling centers are available and officials urge heat precautions.

EPA proposed approving Arizona’s interstate transport plan, saying modeled contributions fall below the agency's 1‑ppb threshold — even as Phoenix keeps logging unhealthy ozone days. Local advocates and industry are sharply divided.

More than 400 people were treated and 25 hospitalized at Luke Days as an early heat wave pushed Phoenix past 100°F.

A sudden surge of grasshoppers is coating cars and yards across Phoenix; experts point to spring growth and species biology as likely causes. Practical tips follow.

Preliminary ASU field measurements suggest Phoenix‑area data centers are warming nearby neighborhoods by several degrees, raising health and regulatory concerns.

A major heat wave builds midweek with triple-digit highs and limited overnight relief.

A rare early-season heat wave will push Phoenix into the 100s midweek. City cooling centers and safety tips are standing by.

An Extreme Heat Watch covers March 19–22 as Phoenix nears an earliest‑ever 100°F. Cooling centers and safety tips inside.

Sunny this morning with a high near 93°F; a much stronger heat wave could push Phoenix past 100°F by midweek. Cooling centers will be available downtown.

Sunny and dry today with highs near 92°F. NWS says triple‑digit heat is likely by Tuesday.