Not sure how the Tule fog related to the SF fog, but: https://news.berkeley.edu/2019/04/10/falling-levels-of-air-pollution-drove-decline-in-californias-tule-fo

Not sure how the Tule fog related to the SF fog, but: https://news.berkeley.edu/2019/04/10/falling-levels-of-air-pollution-drove-decline-in-californias-tule-fog/ https://news.berkeley.edu/2019/04/10/falling-levels-of-air-p...