🟡 Moderate

Heat Advisory

North Oregon Coast Range Lowlands; Central Oregon Coast Range Lowlands; Lower Columbia River; Tualatin Valley; West Hills and Chehalem Mountains; Inner Portland Metro; East Portland Metro; Outer Southeast Portland Metro; West Central Willamette Valley; East Central Willamette Valley; Benton County Lowlands; Linn County Lowlands; Lane County Lowlands; Cowlitz County Lowlands; North Clark County Lowlands; Inner Vancouver Metro; East Clark County Lowlands; South Washington Cascade Foothills

Heat Advisory issued August 2 at 10:16AM PDT until August 5 at 11:00PM PDT by NWS Portland OR

Alert Description

* WHAT...Afternoon high temperatures of 95 to 100 degrees and morning low temperatures of 60 to 65 degrees expected. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...From noon Tuesday to 11 PM PDT Wednesday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Wildfire smoke is expected to increase west of the Cascades early in the week, which may limit high temperatures by approximately 1-3 degrees. However, temperatures will still be hot enough to bring an increased risk of heat-related illnesses even if temperatures are dampened a few degrees from smoke.

Safety Instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Time Information

Effective

Aug 4, 2026, 7:00 PM

Expires

Aug 3, 2026, 7:00 PM

Issued

Aug 2, 2026, 5:16 PM

Alert Details

Severity

Moderate

Urgency

Expected

Certainty

Likely

Issued By

NWS Portland OR

National Weather Service