FORECAST: Any relief from the 100s?

High pressure is now slowly moving east as low pressure approaches from the southwest, so temperatures are gradually dropping.

By: Amber Sullins

PHOENIX — It's been a hot week in the Valley!

High pressure is now slowly moving east as low pressure approaches from the southwest, so temperatures are gradually dropping.

Phoenix will top out in the upper 90s to low 100s on Saturday and Sunday with overnight lows in the 70s.

A storm system passing to our north will drop us out of the triple digits while picking up winds and increasing fire danger across our state over the weekend.

Expect Valley highs down in the low to mid 90s by Sunday and Monday.

We're also tracking an Ozone High Pollution Advisory on Friday. So plan on limiting your time outside if you have any respiratory issues like asthma, bronchitis or COPD.

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. Symptoms may include itchy eyes, nose, and throat, wheezing, coughing, shortness of breath, chest pain, and upper respiratory issues.

Please help reduce ozone pollution by driving as little as possible, carpooling or using public transit. Even waiting to refuel your vehicle until after dark and avoiding idling in long drive-thru lines helps too.