Fine Particulates (PM 2.5) – Code YELLOW
Regional Maximum PM 2.5 Concentrations:
Tuesday, March 11, 2008:
PM 2.5 – YELLOW (79 AQI or 29.6 µg/m3)
Short-Term Discussion: A passing cold front earlier this morning is responsible forthis afternoon’s blustery winds. Skies should clear out and winds should diminish later this evening before the next storm system arrives on Thursday. Fine-particulate concentrations are holding in the moderate range at the moment.
Partly cloudy overnight with temperatures expected to fall into the upper 20s. Increasing clouds on Thursday as another area of low pressure approaches the region. There is a slight chance of a late afternoon shower with afternoon temperatures expected to push towards the 50 degree mark. Thursday’s fine-particulate concentrations should remain in the code YELLOW (moderate) range in portions of the forecast area.
Extended: Clouds and occasional showers look like they will persist through the first half of this weekend as a series of storms pass through the region. Temperatures should be warm enough so that the bulk of the precipitation will fall as rain. The last in a series of storms is forecast to pass south of the forecast area on Saturday though this could change. Without any real air-mass changes we expect air-quality readings to remain in the moderate range for the foreseeable future.
Tags: air quality forecast
