The last few years’ fires are all blurring into one for Jessica Tovar, an Oakland resident and advocate at the nonprofit Local Clean Energy Alliance, a renewable energy advocacy group. “I had an office that you could see the port of Oakland from, and in those times, you could not see the port because the smoke was so thick,” she said. Oakland was among the worst-hit cities when smoke from the 2017 Tubbs wildfires spread to the areas around San Francisco Bay, lowering air quality to levels comparable to Beijing, some of the worst in the world. As California’s fall wildfire season approaches, mask shortages mean Oakland residents are at risk of exposure to both coronavirus and to toxic smoke. Tovar, who frequently interacts with underserved Oakland residents, echoed the concerns of advocacy organizations that distribute masks.