Just a bit more heat is expected before residents of the Puget Sound region may get a chance to experience petrichor, one of our favorite olfactory treats.

That’s the name for the unique and earthy scent produced when rain falls on dry soil, created by the combination of water with certain compounds such as ozone, geosmin (a compound released from soil into the air by raindrops) and plant oils.

Tuesday temperatures are forecast to reach the low to mid-80s, according to Dana Felton, a meteorologist with the National Weather Service in Seattle.

A person dives into the water from a pedestrian bridge at Lake Union Park into the water during a heat wave hitting the Pacific Northwest, Sunday, June 27, 2021, in Seattle. Yesterday set a record high for the day with more record highs expected today and Monday. (AP Photo/John Froschauer)


Then we get a chance of showers Tuesday night into Wednesday morning and a more significant cooldown with highs Wednesday expected to be in the low to mid-70s, he said.

“The clouds are already on the coast,” Felton said. We’ll see a little cooling Tuesday and more Wednesday, he said.

We’ll settle into “more normal August weather” after that with high temperatures right around 80 degrees through the weekend, Felton said.


Though we could still see very high heat again this summer — 10% of our 90-degree days have occurred after Aug. 17, Felton said — the chances begin to drop quickly.

Sunday and Monday’s highs did not have nearly the impact of our six-day stretch of 90-degree-plus days in July. For one thing, overnight lows have been in the lower 60s as opposed to the upper 60s, and that makes a big difference, he said.

“Three to four hours of 62 to 63 degrees takes the edge off,” Felton said.