News & Events

Back to Code Green in Lehigh Valley - Berks

Wednesday, April 29, 2009

Current Conditions: Much cooler conditions this afternoon as a break in the heat wave has occurred. Temperatures are some 20-30 degrees lower today than readings of earlier in the week. With the change in air masses, both ozone and PM2.5 levels have dropped considerably, and are well down into the good range. Partly to mostly cloudy tonight. Lows will drop into the upper 30s in the colder spots.Thursday's Forecast: During the day Thursday, the front that resulted in the heat wave breaking will attempt to come back northward as a warm front. This could spark some showers during the day, and with more clouds, temperatures may have a hard time reaching the lower 60s. Fine particle levels could rise some Thursday morning, but then drop in the afternoon as low level mixing gets going. Overall averages for the day will not rise above the good range. Thursday night should bring areas of rain as the warm front passes to the north of us by late in the night. Low temperatures should average 48-53. Extended Outlook: An overall active weather pattern is in store for the upcoming weekend into the early part of next week. More clouds than sunshine should limit ozone formations. A warm and humid flow from the southwest with some sunshine on Friday might send PM2.5 levels into the moderate range once more. Temperatures Friday afternoon could rise into the 70s. Slightly cooler on Saturday with clouds and some sunshine with overall good air quality. Another wave of low pressure might attempt to bring in some showers from the southwest on Sunday. Other areas of low pressure should keep the weather pattern unsettled into the early part of next week. Below normal temperatures are expected early next week, with warming later on next week.

Remember to follow the navigation links on this site to sign up for daily Air Quality forecasts, brought to you by the Pennsylvania Department of Environmental Protection (PA DEP) and the Air Quality Partnership of Lehigh Valley - Berks.