Air Quality Action Day declared for Friday, June 29

 
 
 
 

A(n) Air Quality Action Day has been declared for Susquehanna Valley, PA, on Friday, Jun 29
 
Tomorrow’s Forecast
Friday, Jun 29: 110 AQI Unhealthy for Sensitive Groups Ozone
  70 AQI Moderate Particle Pollution (2.5 microns)

Extended Forecast
Saturday, Jun 30: 90 AQI Moderate Ozone
  75 AQI Moderate Particle Pollution (2.5 microns)
Current Conditions as of 2 PM on Thursday: The start of a potential heat wave has arrived as temperatures this afternoon are already approaching the 90 degree mark. Temperatures in the 90s will be here to stay the next couple days, along with deteriorating air quality conditions. It is likely that we will see scattered Code Orange level concentrations around the region over the next few days. *** Friday’s Forecast: Hot conditions will continue on Friday as temperatures again will climb well into the 90s. There is potential for a small scale convective system to move into the Commonwealth during the early morning hours to bring some localized showers for a short time period. Clearing skies will occur early enough that Ozone formation will be enhanced once again to see values reach at least the moderate range. Some locations, due to the variability of the early morning system, can possibly even see Code Orange levels of Ozone despite the chance for an early shower. Winds will become breezy out of the northwest as conditions are quick to dry out by late morning. Dew point temperatures will increase early, but fall off slightly in the afternoon with the clearing skies. PM 2.5 levels should reach the moderate range but will struggle to climb with the drier and breezy afternoon winds. *** Extended Forecast: We will sit along the outer edge of an area of high pressure as we progress into the weekend as the high heat continues to bear down on the east. This “ring of fire” scenario provides a potential for some disturbances to cross the region, bringing a chance for a quick shower or thunderstorm. This probability for a scattered shower or thunderstorm could impact air quality conditions for the weekend. The instability with these features could develop cloud cover that would limit just how high Ozone levels will climb. Weaker disturbances would have less of an impact, therefore creating potential to see Code Orange levels continue. Forecast highs will be in the mid to upper 90s with dew point temperatures hanging around the mid 60s to near 70 degrees. PM 2.5 levels should remain in the moderate range despite some mixing with an afternoon breeze. The heat will continue into early next week along with the threat for a scattered shower or two. Without a big change in the weather pattern likely at the present time, scattered moderate to Code Orange levels of Ozone could continue into early next week. PM 2.5 levels will also likely remain at least moderate with moderately high dew point temperatures. One thing to keep an eye on is transport of smoke from wildfires to the west, if any of it were to reach this far east, and a smaller scale wildfire currently in northern Virginia. Smoke could play a role in how both Ozone and PM 2.5 levels react over the forecast region. As holiday festivities begin to kickoff, PM 2.5 and Ozone could also become impacted by firework activity. — Roble

Here are some Air Quality Action Day tips you can follow to help reduce pollution:

Days when ozone levels are expected to be high:

* Conserve electricity and set your air conditioner at a higher temperature.
* Choose a cleaner commute—share a ride to work or use public transportation. Bicycle or walk to errands when possible.
* Refuel cars and trucks after dusk.
* Combine errands and reduce trips.
* Limit engine idling.
* Use household, workshop, and garden chemicals in ways that keep evaporation to a minimum, or try to delay using them when poor air quality is forecast.

Days when particle pollution levels are expected to be high:

* Reduce or eliminate fireplace and wood stove use.
* Avoid using gas-powered lawn and garden equipment.
* Avoid burning leaves, trash and other materials.

This forecast is brought to you by the Pennsylvania Department of Environmental Protection (PA DEP) and the Air Quality Partnership of the Susquehanna Valley. 

* For more information on the health effects of PM 2.5 and ozone, visit the EPA Airnow website.
* To see the current forecast and monitoring information for the Southwest PA Region, visit us online at the PA DEP Forecast and Monitoring Site.
* To find out more information about the Air Quality Partnership of the Susquehanna Valley, visit the AQP of SV Website.

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