Forecast Discussion
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 Tuesday, June 17, 2025 at 3:54 pm.
This forecast is currently valid.
Today's Air Quality Conditions
Air quality concentrations across the state remain in the Code Green range this afternoon.
For a display of the most recent Air Quality Index (AQI) conditions throughout the day, visit the Ambient Information Reporter (AIR) tool.
General Forecast Discussion
A humid air mass will continue to interact with a mid-level trough axis to the west and produce scattered to numerous showers and thunderstorms through Thursday. Air quality levels are expected to remain in the Code Green range.
Outlook
By Friday, the upper level trough axis will have finally crossed the region an will be east of the Carolinas. A weak surface front and attendant drier air are also modeled to push into the region. Concurrently, a weak area of high pressure -- in the area of NVA behind the upper trough axis -- will assist in pushing the front into the region and creating mostly sunny skies with warming surface temps and reduced relative humidity. These are all favorable ingredients for ozone formation, with the main inhibitor being the relatively clean (and previously rain-cleansed) air mass in place. Will continue to monitor trends but project low to mid Code Yellow in the major metropolitan regions, with upper Code Green forecast elsewhere for now. Friday will likely herald the start of an increasingly warm period, with ozone likely to become more active through the weekend and on into next week.
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.
Forecast Day
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(Elevation > 4,000 feet)