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Lehigh Valley Ozone/PM2.5 Forecast

Small map of Pennsylvania showing counties involved in the lv partnership.
Forecasted AQI for Ozone Air Quality Index Scale Forecasted AQI for PM2.5
July 30, 2015

 

Date: Thursday, July 30, 2015
Action Day?:  No
Temperature: 86-90 Thursday
Discussion:
A cold front moving through the area late in the day Thursday will bring showers and thunderstorms out ahead of it. Clouds and convection should mean ozone levels get no higher than the upper good range, with fine particulate remaining in the moderate zone. Afternoon temperatures will still get to the upper 80s. Clearing and a little cooler Thursday night with lows in the lower to middle 60s.

Extended:
Drier, but not much cooler air will move in behind a cold front for the day Friday. A stronger west to northwest flow will limit both fine particulate and ozone to the good range. High temperatures will reach into the upper 80s with a good deal of sunshine. A weak frontal system will cross the area late Saturday or Saturday evening, and could bring an isolated shower with it. Most areas will likely not see any rain. Ozone may rise to the upper good range, with PM2.5 possibly going moderate under sunshine and puffy clouds. Another area of high pressure will keep the weather dry, but warm Sunday into Monday with moderate levels of PM2.5, and upper good to low moderate levels of ozone. A stronger cold front crossing the area Monday night will bring cooler and less humid air in by the middle of next week with good air quality.---McAuliffe

 

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