The North American wildfire season was predicted to be severe, with record drought conditions and high spring temperatures in the West.[4] There were 311 early wildfires in the first four months of the year in Arizona, compared to 127 in the same period in 2020.[5] Haze from West Coast fires reached East Coast cities, [6][7] and particulate pollution caused unhealthy air quality in New Hampshire in July, 2021.[8]