Exposure to air pollution can irritate the lungs, cause inflammation, and alter immune function, making it more difficult to fight respiratory infections such as COVID-19. Wildfire smoke is a complex mixture of different air pollutants that causes episodes of extremely poor air quality. When conditions are smoky, more people who are exposed to the novel coronavirus may develop COVID-19 and some cases of COVID-19 may become more severe. This webinar will cover the existing evidence, populations most at risk, and strategies for health protection during the ongoing pandemic.