The Centers for Disease Control and Prevention in the United States has issued a warning that 19 states have air quality alert status nationwide | Canada | Centers for Disease Control and Prevention in the United States
Affected by the smoke generated by the worst forest fire in Canadian history, air pollution in many parts of the United States has been severe recently, posing a health threat to the public.
On the same day, the Centers for Disease Control and Prevention in the United States issued a warning, reminding the public to pay attention to the potential health effects of smoke, such as headaches, eye discomfort, poor breathing, coughing, and other symptoms.
According to data from the US Flight Tracking website, as of noon on June 30th, more than 2000 flights were delayed and over 300 flights were cancelled on the East Coast of the United States due to the impact of smoggy weather.
![The Centers for Disease Control and Prevention in the United States has issued a warning that 19 states have air quality alert status nationwide | Canada | Centers for Disease Control and Prevention in the United States](https://a5qu.com/upload/images/1fd0b95b11747945b2e882c20535771a.jpg)
The latest data from the Canadian Interdepartmental Forest Fire Center shows that there have been over 3000 forest fires in Canada since the beginning of this year, with an area of over 80000 square kilometers affected by fires, setting the highest level on statistical records. As of the early morning of July 1st local time, there are still over 500 forest fires burning across Canada, with nearly half of them in a state of loss of control.