Experts Urge Indoor Air Precautions as Canada Wildfire Smoke Pushes AQI Above 300
Updated
Updated · The New York Times · Jul 17
Experts Urge Indoor Air Precautions as Canada Wildfire Smoke Pushes AQI Above 300
3 articles · Updated · The New York Times · Jul 17
Summary
AQI readings above 300 can signal hazardous outdoor conditions, and experts say people should assume indoor air may also worsen as smoke from Canada’s wildfires spreads across wide areas.
Wildfire smoke carries tiny toxic particles that can penetrate homes through ventilation systems, natural airflow and building facades even when people stay inside and shut windows and doors.
Children, older adults, pregnant people and those with asthma or other chronic respiratory illnesses face higher risks, with symptoms ranging from coughing and wheezing to chest pain, rapid heartbeat and fatigue.
Weather apps commonly track the Air Quality Index; experts say readings above 150 are unhealthy and can help households judge when stricter indoor precautions are needed.