Forecast Discussion

Date: Wednesday, October 18, 2018 - 15:00 ET

Forecast Valid: Thursday, October 19, 2018

Today's Air Quality Conditions: Ozone and particle pollution readings are low and within the Code Green range statewide. For a display of the most recent air quality conditions throughout the remainder of this afternoon, please visit the US EPA's AIRNOW web site.

General Forecast Discussion: Clear and cool weather is expected statewide tomorrow with light winds out of the north as high pressure builds over the Ohio Valley. The incoming airmass is generally clean in nature, so ozone and particle pollution readings should remain low and in the Code Green range statewide tomorrow.

Outlook: Dry and cool weather Friday will give way to cloudy skies with areas of light rain as a cold front approaches on Saturday. Ozone and particle pollution readings in the Code Green range are expected statewide through Saturday.

Extended Air Quality Outlook
Forecast Day
AQI Range
Category Range
Thursday 30-40 Green
Friday 35-45 Green
Saturday 25-35 Green

(Tardif - NC Division of Air Quality)


Date: Tuesday, October 16, 2018 - 15:00 ET

Forecast Valid: Wednesday, October 17, 2018

Today's Air Quality Conditions: Ozone and particle pollution levels are well within the Code Green range across the state. For a display of the most recent air quality conditions throughout the remainder of this afternoon, please visit the US EPA's AIRNOW web site.

General Forecast Discussion: Tomorrow, a digging upper level shortwave will push eastward and drag a strong surface cold front through the region. Air quality levels will likely remain in the Code Green range across the state.

Outlook: On Thursday, high pressure will continue to deliver the clean, crisp, cool and dry air mass into the region on light northerly winds keeping air quality levels in the Code Green range. By Friday, the high will begin to slide offshore but the cool air mass in place should continue to hold air quality levels in the Code Green range.

Extended Air Quality Outlook
Forecast Day
AQI Range
Category Range
Wednesday 35 Green
Thursday 25-35 Green
Friday 25-40 Green

Note: Ozone is forecast from April 1 to October 31. During the cool season ozone is typically in the Code Green range.

McLamb - NC Division of Air Quality)