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A cold front and associated low will bring showers and a chance for severe thunderstorms on Tuesday.
Temperatures will be cooler today, but humidity will continue to be an issue.
These storms could be severe, with heavy downpours and damaging winds.
A Code Purple Air Quality Alert means that air pollution concentrations within the region are very unhealthy for the general population.
Unhealthy air quality in parts of the Shenandoah Valley.
Wildfire smoke will create unhealthy air quality and poor visibility at times.
The haze is part of a recurring pattern that has affected large portions of the United States in recent wildfire seasons.
Combined with the increase in humidity, it will feel more like 100 to 105 degrees.
Officials warn that the combination of high temperatures and elevated humidity may increase the risk of heat-related illnesses.
Temperatures and humidity to climb.