Wildfire Smoke Prompts Public Health Advisories Across U.S.

Why it matters locally: While the immediate impact of Canadian wildfire smoke is generally less severe in California compared to states closer to the source, prolonged or widespread events could still necessitate public health advisories from agencies like the California Air Resources Board (CARB) or local air quality districts, due to California's existing challenges with air quality.

Smoke from Canadian wildfires has impacted air quality across the United States. Public health officials are advising residents on how to protect themselves from the resulting air pollution. On Thursday, people in Chicago wore masks as smoke from Canadian wildfires affected the city's air. City officials recommended that individuals remain indoors. Data indicated that Chicago experienced some of the lowest air quality among large cities globally on that day.