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AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action Day
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Air Quality Forecast
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Air Quality Index (AQI)
Health Message: None
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Forecast Discussion: Ground level ozone concentrations should remain green on this Saturday afternoon, except some readings around Catawba and northeast Upstate area are creeping towards code yellow. High pressure will remain in charge for one more day on Sunday. Mostly sunny skies are expected throughout the state. A backdoor frontal boundary will drift southward through the Mid-Atlantic and should enter the northeast portion of the state by sunset. A 30% chance of showers and/or storms are expected in Catawba and Pee Dee during the afternoon with just a slight chance of rain elsewhere. The atmosphere is fairly loaded with precursors across North Carolina and Virginia this afternoon. This loading should pivot into, especially the western half of the Palmetto state on Sunday. Expect the current precursor loads to disperse a little as we head deeper into the weekend. Having said that, there should be enough sun and remnant workweek precursors on Sunday to warrant a CODE YELLOW (Moderate) forecast for Upstate, Catawba, CSRA, and Midlands. Pee Dee and Trident should remain GREEN on Sunday due to cleaner airmass over the eastern half of the state.

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