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Air Quality Action Day, Dec. 20

A(n) Air Quality Action Day has been declared for Susquehanna Valley, PA, on Sunday, Dec 20
Tomorrow’s Forecast
Sunday, Dec 20: 103 AQI Unhealthy for Sensitive Groups Particle Pollution (2.5 microns)

Extended Forecast
Monday, Dec 21: 64 AQI Moderate Particle Pollution (2.5 microns)
Tuesday, Dec 22: 39 AQI Good Particle Pollution (2.5 microns)
Current conditions: An Air Quality Action Day is effect for the day Sunday. Stagnant surface winds, a moderately strong inversion, and snow cover will all act to bring fine particulate matter (PM2.5) concentrations to the code ORANGE range Sunday. Concentrations will be highest during the morning hours, and then fall some during the afternoon with a slight south wind. The day will turn out mostly cloudy with only a rain or snow shower. *** Monday’s forecast: Another weak weather system will bring a rain or snow shower later Monday or Monday evening with enough low level mixing from the south and southwest to where only moderate PM2.5 concentrations are expected. *** Extended forecast: Better air quality in the good range is expected by Tuesday, as a northwesterly flow will increase and be rather brisk in the afternoon. High pressure builds back in by Wednesday, but then a strong cold front brings rain to the area Christmas eve. A blast of very cold air will then follow for Christmas day and Saturday. Air quality should be in the good range Wednesday through Saturday.—McAuliffe


Residents and businesses within the ozone Air Quality Action Day area are strongly encouraged to voluntarily help reduce air pollution by:

• Conserving electricity by setting air conditioning to a higher temperature;
• Combining errands to reduce vehicle trips;
• Limiting engine idling; and
• Refueling cars and trucks after dusk.

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.

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