An air quality alert issued today from the Clark County Division of Air Quality warns that wildfire smoke from Southern California will create poor air conditions

Most of the state will see some improved air quality levels on Wednesday. But levels will still be unhealthy for Grafton, Sullivan and Cheshire counties.

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have sent smoke pouring across large sections of the country — a problem that’s set to linger for days.