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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
April 30, 2016

 

Date: Saturday, April 30, 2016
Action Day?:  No
Temperature:  Upper 50s to Low 60s
Discussion:
*** Saturday’s Forecast: Saturday will be the driest day of the forecast period, but skies should remain mostly cloudy to overcast once again for the day. Light easterly flow will continue, which should help to keep PM-2.5 concentrations mostly inside the good range. For the most part, concentrations should be in the higher end of the good range with a chance for a few scattered moderate level readings across the region. Temperatures should manage to climb a little higher than that of Friday, but may be limited to only the upper 50s to low 60s. Rain showers will begin to push in from the west during the evening hours and continue through the overnight hours into Sunday.

Extended Forecast

Date

4/30/2016

5/1/2016

5/2/2016

Ozone

WHITE

WHITE

WHITE

PM

GREEN

GREEN

GREEN


Extended:
*** Sunday’s Forecast: These showers overnight Saturday and into Sunday will be light to moderate in intensity, but should help a relatively clean air mass remain rather clean. Breezy conditions will also assist in keeping the air mass well mixed. Any area that saw PM-2.5 concentrations close to or just inside the moderate range on Saturday will certainly return to the good range on Sunday. Temperatures will be similar to that of Saturday as well, though still a few degrees below normal for late April, with highs reaching the upper 50s to low 60s. *** Monday’s Forecast: Showers will linger into the early hours on Monday before becoming more scattered and lighter as the day progresses. PM-2.5 concentrations should remain at levels inside the good range after the rainfall on Sunday and early Monday helps to keep the air mass mostly clean along with the continuation of a lighter breeze. Temperatures will again remain a little below normal, but the low to mid 60s as things start to dry up shouldn’t feel too bad. *** Extended Outlook: High pressure will try to build over the region on Tuesday with some breaks in the clouds finally. Temperatures will be in the mid to upper 60s. The area of high pressure will not hang around all too long as another chance for rain showers will arrive as early as Wednesday afternoon. Even with more showers likely on Thursday to dampen spirits, air quality will at least be mostly good for the week. --- Roble

 

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