The entire US right now:

The video likely resonated due to its timely and alarming depiction of a widespread environmental issue affecting a large population. The use of clear, impactful on-screen text and relatable state names made the information easily digestible and shareable.

The video displays alarming air quality alerts across Michigan, Wisconsin, Pennsylvania, and the Northeast US, showing hazardous levels due to wildfire smoke. It contrasts the severe air quality with typical weather information for Philadelphia and Michigan.