It is important to pay attention to air quality alerts and follow the guidance provided by the Air Quality Health Index. This typically means reducing exposure by limiting time outdoors during severe pollution episodes, especially for vigorous physical activity. When indoors, keep doors and windows closed and use filtration, such as a central HVAC system with an air filter or an indoor air purifier. If you cannot otherwise avoid exposure, consider wearing a well-fitting N95 mask that provides protection from smoke particles.