UW News
Logan Dearborn
November 3, 2025
UW-led study links wildfire smoke to increased odds of preterm birth
In mid-pregnancy, exposure to any smoke was associated with an elevated risk of preterm birth, with that risk peaking around the 21st week of gestation. In late pregnancy, elevated risk was most closely associated with exposure to high concentrations of wildfire PM2.5, above 10 micrograms per cubic meter.
April 2, 2025
Children exposed to higher ozone levels early in life are more likely to develop asthma
Children exposed to higher levels of ozone in their first two years of life were significantly more likely to be diagnosed with asthma or wheezing at ages 4-6 — but researchers didn’t observe the increased risk of asthma at ages 8-9.
