It's 5 hours later, so the data may be different but the largest red blob I see right now is in the region of the Gulf Coast near Corpus Christi. Since it's sh

It's 5 hours later, so the data may be different but the largest red blob I see right now is in the region of the Gulf Coast near Corpus Christi. Since it's showing PM 2.5 readings, I suppose it could be a strong offshore wind picking up dust/sand from the long barrier island there.