Authorities in many states in the northern and eastern United States have therefore again issued air quality warnings for up to 70 million people. An air quality score (AQI) of over 150, classified as “unhealthy”, has been measured in Georgia, Tennessee, North Carolina, South Carolina, Vermont and New Hampshire.
In Midwestern states, residents have been advised not to stay outside too long, while in New York authorities have advised not to leave the house. Smoke warnings have also been issued in the Canadian cities of Calgary, Montreal, Quebec and Toronto. Canada is currently experiencing the worst wildfire season in its history, so far more than 10 million hectares of forest have been destroyed. There are currently nearly 900 wildfires, of which 580 are considered “out of control”. Although wildfires can have multiple causes, human-induced climate change makes weather conditions such as heat and drought more likely that can lead to wildfires. These in turn release CO2, which further fuels climate change.
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