"That does make the plants begin to pollinate. The warm weather definitely gets them going and at higher levels in the air, absolutely. When we're seeing a bit more windy days, that can also increase that amount of pollen that's in the air."
"When we do get those rainy days, it does clean the air a bit and remove some of that pollen from the air. We are expecting a significant warmup by this upcoming weekend, where we could see temperatures approach 80 degrees in the city."
"There's currently no relief in sight, with zero precipitation forecast for the Bay Area for the next two weeks. Additionally, temperatures are expected to stay about 15 to 20 degrees above the seasonal average in the Bay Area, thanks to a ridge of high pressure building over the region."
The Bay Area is experiencing severe spring allergy conditions due to unseasonably warm, dry, and windy weather. The National Allergy Bureau detected high tree pollen levels in San Jose, with temperatures reaching 76 degrees in San Francisco and expected to approach 80 degrees by the weekend. Warm weather triggers plants to pollinate at higher levels, while wind disperses pollen further. The lack of rainfall since early March exacerbates symptoms, as rain typically cleanses pollen from the air. Meteorologists forecast no precipitation for the next two weeks and temperatures 15-20 degrees above seasonal averages. Allergists recommend avoiding outdoor activities during morning and evening hours when pollen levels peak.
Read at SFGATE
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