News & Events

Weekend Forecast

Thursday, June 17, 2010

Current Conditions:
Mostly sunny skies and dry conditions have been left in the wake of yesterdays unsettled weather. Scattered afternoon clouds will diminish as we head toward sunset with temperatures topping out in the upper 70s. A northwest breeze will keep us comfortable, with low pollution levels throughout the day. *** Friday's forecast: On Friday, a large area of high pressure will move over Pennsylvania. As a result, winds will become light, and skies will be mostly clear throughout the afternoon. Temperatures will rise into the mid 80s, but humidity levels will remain tolerable making for a wonderful afternoon across the entire state. A full day of sunshine will allow Ozone concentrations to build into the lower Moderate range by nightfall. Overnight, skies will remain clear and winds will be light. *** Extended forecast: The final weekend of spring will have a summer-like feel as high pressure slides off the eastern coast of the United States. Temperatures, as well as humidity levels, will be on the rise as Saturday afternoon progresses. Expect mostly sunny skies with a southwest breeze for much of the day, with high temperatures in the upper 80s. A stagnant airmass combined with full sunshine could allow pollutant concentrations rise past the Unhealthy threshold during the afternoon hours. We may see an Ozone Action Day issued on Saturday as a result. On Sunday, unseasonably warm temperatures and humid conditions will continue as a ridge of high pressure dominates our weather pattern. An isolated shower or thunderstorm can not be ruled out, however most precipitation will stay well to our north until next week. Air quality will remain in the upper Moderate range. A frontal system could make a run at our area by early next week, bringing temporary relief from the summertime heat and humidity in place over the region.

This forecast is brought to you by the Pennsylvania Department of Environmental Protection (PA DEP) and the Air Quality Partnership of the Lehigh Valley - Berks Area.