Wildfire smoke from Canada is affecting air quality in major cities across the US. The smoke is being carried south by the wind, bringing polluted air to over 100 million people. Air Quality Alerts have been issued for 18 states and the District of Columbia, warning that even healthy adults may be affected by the poor air quality.

Further details on the air quality situation are available from WSVN 7 News and other sources, including the impact on specific areas and the expected duration of the poor air quality.