News & Events

October 24 Air Quality (PM2.5) Forecast

Friday, October 24, 2008

Friday, October 24, 2008:
Fine Particulates (PM 2.5) – Code GREEN

Regional Maximum PM 2.5 Concentrations:
Wednesday October 22, 2008:
PM 2.5 – GREEN (16 AQI or 4.9 µg/m3)


Short-Term Discussion: Mostly sunny across the region with temperatures just starting to make their way past the 50-degree mark. Southeasterly winds will set up on-shore flow across most of the region, which should raise humidity levels a bit ahead of the next storm system that is expected to arrive on Saturday. Most areas are seeing very low levels of fine-particulates right now though concentrations should begin to rise on Friday.

Mainly clear and quite chilly overnight with temperatures falling into the mid to upper 20s by sunrise (expect heavy frost by morning). Becoming mostly sunny with afternoon temperatures expected to peak near the 60-degree mark. Some high clouds may move into our region later in the afternoon or evening ahead of an approaching storm system. Friday’s fine-particulate concentrations should climb during the day but still remain low enough to stay in the code GREEN (good) range.


Extended: A large area of low pressure is stretched across the country’s midsection at the moment. Clouds and showers currently over the lower Mississippi and Gulf Coast will work their way towards the Northeast on Friday and probably arrive in our region sometime Saturday. Rainfall could be substantial with the bulk of the rain expected Saturday afternoon and evening. We will get some brief clearing for Sunday before a strong cold front arrives on Monday. Air-quality readings should remain in the good range for most of the extended period.