Forecast Discussion

Date: Sunday, June 16, 2019

Forecast Valid: Monday, June 17, 2019

Today's Air Quality Conditions: Particle pollution readings are holding in the lower Code Yellow range in the Western Valleys with Code Green conditions elsewhere. Ozone readings are rising into the upper Code Green range elsewhere. 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: Warm and humid conditions will continue statewide tomorrow with assertive southerly and southeasterly winds remaining in place courtesy of an area of high pressure parked off the coast. Some isolated showers and thunderstorms will be possible over the interior late tomorrow afternoon into tomorrow evening. Ozone readings may rise into the lower Code Yellow range over the Western Ridge Tops as well as over the Charlotte and Triangle regions, but the latter two will be somewhat dependent on rainfall timing with Code Green conditions more likely with earlier rainfall onset. Code Green conditions are otherwise expected over the rest of the state and particle pollution readings in the Code Green range are expected statewide tomorrow.

Outlook: Warm, humid and unsettled weather will prevail through the middle of the week as a series of upper-level troughs translate eastward across the eastern U.S. Ozone readings in the Code Yellow range can't be ruled out over the Western Ridge Tops, Charlotte and Triangle regions through Wednesday, but Code Green air quality is otherwise expected over the rest of the state Tuesday and Wednesday.

Extended Air Quality Outlook
Forecast Day
AQI Range
Category Range
Monday 35-51 Green-Yellow
Tuesday 35-61 Green-Yellow
Wednesday 35-61 Green-Yellow

The forecast Air Quality Index value for each pollutant represents the highest value expected within the forecast region, so some areas and monitors may see lower values. We use the best information and techniques available to ensure the quality and accuracy of the forecasts we provide to the public.

(Tardif - NC Division of Air Quality)


Date: Saturday, June 15, 2019

Forecast Valid: Sunday, June 16, 2019

Today's Air Quality Conditions: Ozone readings are rising into the lower Code Yellow range in the Fayetteville, Charlotte, Triangle and Western Ridge Top regions with Code Green conditions observed elsewhere. Particle pollution readings near the Code Green/Code Yellow threshold are being observed in the Fayetteville region with Code Green conditions elsewhere. 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: Partly cloudy skies with warm and humid conditions are expected tomorrow, as high pressure remains parked off the Carolina coast with winds out of the south and southwest. The overall wind pattern should bring a generally clean air mass into the state and allow for ozone and particle pollution to remain generally low statwide. Low Code Yellow ozone readings can't be ruled out in the Charlotte, Triangle and over the Western Ridge Tops, but Code Green conditions are otherwise likely over the rest of the state. Particle pollution readings may also be near the Code Green/Code Yellow threshold in the Mountains, with Code Green conditions expected elsewhere.

Outlook: Warm and humid conditions with occasional afternoon showers and thunderstorms will be expected to start the workweek. Ozone readings in the lower Code Yellow range will be possible in the Western Ridge Tops, Charlotte and Triangle regions, with Code Green conditions elsewhere. Particle pollution readings in the Code Green range are expected statewide.

Extended Air Quality Outlook
Forecast Day
AQI Range
Category Range
Sunday 40-61 Green-Yellow
Monday 35-64 Green-Yellow
Tuesday 35-61 Green-Yellow

The forecast Air Quality Index value for each pollutant represents the highest value expected within the forecast region, so some areas and monitors may see lower values. We use the best information and techniques available to ensure the quality and accuracy of the forecasts we provide to the public.

(Tardif - NC Division of Air Quality)