The Bay Area starts the week boasting some glorious shorts and sandals weather, but allergy sufferers must remain on guard because many plants are in full pollen-releasing mode.
Temperatures are expected to continue to be toasty, in the mid- to upper 80s around the Bay Area on Monday and Tuesday in the East Bay and South Bay, according to the National Weather Service in Monterey.
Then on Wednesday and Thursday, it's expected to gradually cool, bringing temperatures in the upper 60s and lower 70s in San Jose and Concord, and lower 60s in Oakland. The hills could see strong gusts of wind Monday and Tuesday, especially in the northern part of the Bay Area.
Normally, the Bay Area is cooled by winds from the ocean. A high-pressure area over the region and over the Pacific Northwest has turned winds slightly offshore, causing the warmer air along the coast.
Allergy sufferers won't get much relief, as flowers, crape myrtle, jacaranda, oaks and grass continue to shed pollen. The forecast on the website pollen.com is for medium-high pollen counts in San Jose, Walnut Creek and Oakland.
Fruit trees have finished blooming, but some trees and plants are just getting started.
Grasses are by far the biggest source of itchy eyes and runny noses in Northern California, but trees such as oak, juniper and pine also are producing pollen, according to the American Academy of Allergy Asthma and Immunology.
Although spring is always high season for hay fever, because most annuals and perennials are in full bloom, experts say recent weather has made things that much worse.
Kathy Mercure, plant specialist at Almaden Valley Nursery in San Jose, said dry winds have sucked the moisture out of the ground and desiccated plants such mustard, dandelion and rye.
"With this wind we've had, everything dries out much quicker and goes to pollen," said Mercure. "That's why our foothills were green, and then within two days, they're brown."
The hot weather doesn't mean an early summer. Temperatures should be back in the high 60s to mid-70s by the week's end.
Contact Pete Carey at 408-920-5419 Follow him on Twitter.com/petecarey.
Here are this week's expected low and high temperatures:
San Jose: Monday 60-88; Tuesday 57-83; Wednesday 56-78; Thursday 48-72; Friday 46-73
Concord: Monday 57-87; Tuesday 57-82; Wednesday 49-76; Thursday 45-67; Friday 44-71
Oakland: Monday 50-77; Tuesday 50-78; Wednesday 48-66; Thursday 47-63; Friday 44-65
Santa Cruz: Monday 56-78; Tuesday 47-72; Wednesday 47-69; Thursday 43-67; Friday 44-73
Mountain View: Monday 56-87; Tuesday 55-82; Wednesday 55-77; Thursday 49-70; Friday 48-71
Redwood City: Monday 5 51-87; Tue 49-82; Wednesday 48-76; Thu 43-68; Friday 43-69
San Francisco: Monday 48-66; Tuesday 48-68; Wednesday 46-60; Thursday 46-59; Friday 43-59
Source: National Weather Service, Monterey