The North Carolina Division of Air Quality issues forecasts for fine particulate matter year-round and ozone from March through October. Forecasts and discussions are updated each afternoon for the next three days, and are sometimes updated in the morning to reflect the latest ambient conditions.
This forecast was issued on Friday, June 9, 2023 at 12:26 pm.
This is an old forecast that is no longer valid.
Today's Air Quality Conditions
Current fine particulate concentrations are in the Code Orange range in the Triangle and northern Coastal Plain, with Code Yellow values elsewhere statewide. Current ozone concentrations are nearing or over the Code Yellow threshold in the ridge tops, with Code Green concentrations elsewhere thus far this morning.
General Forecast Discussion
This morning, a Code ORANGE Air Quality Action Day for FINE PARTICULATES is being expanded from the Triangle northeast to the Virginia border and Coast effective immediately until midnight tonight (12AM EDT 6/10/23). This includes: Wake, Johnston, Franklin, Nash, Wilson, Warren, Halifax, Edgecombe, Martin, Northampton, Bertie, Hertford, Gates, Camden, Currituck, Pasquotank, Perquimans and Chowan Counties. Very localized elevated PM2.5 values have occurred overnight and into the morning in/around the Triangle area. This swath of low-level smoke is moving eastward as noted in observations and satellite imagery. Model guidance suggests additional smoke intrusion into the afternoon in this same NE region of the state concurrent with robust low-level mixing, which may bring this smoke down to ground level and result in higher fine particulate readings today into tonight. No changes are being made to the ozone forecast at this time.
Extended Air Quality Outlook
The forecast Air Quality Index value for each pollutant represents the highest value expected within each county, 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. Note that ranges do not include the nine-county Triad region, which is covered by the Forsyth County Office of Environmental Assistance and Protection.
(Elevation > 4,000 feet)