Air Quality Action Day has been declared for Susquehanna Valley, PA, on Saturday, Jul 2 and Sunday, Jul 3

Forecast
Saturday, Jul 2: 110 AQI Unhealthy for Sensitive Groups Ozone
Extended Forecast
Sunday, Jul 3: 105 AQI Unhealthy for Sensitive Groups Particle Pollution (2.5 microns)

Current Conditions: As of 2 PM on Friday, mostly sunny skies prevail across the region as high pressure settles in across the eastern US. This high pressure is also keeping our winds light out of the northwest, which is allowing drier air to continue to filter into the region. Right now, temperatures are rising into the low 80s. Air quality levels have begun to rise as well. The sunshine today has helped to drive ozone levels into the moderate range while the low dewpoints are helping to keep most areas (for PM 2.5) in the good range (some isolated areas are reaching into the moderate status though). Expect the air quality to continue to deteriorate over the weekend as a warm and moist air mass focuses in over the region. Now onto the day-to-day details… *** On Saturday, mostly sunny skies should persist for much of the day as we remain under the influence of high pressure. Resonating over our area for another day, this high pressure will allow the winds to die down even further, limiting mixing within the boundary layer. This limit in mixing coupled with the warmer, more humid conditions building in will force air quality levels to rise. So as temperatures approach the 90 degree mark, expect ozone levels to reach into the Code ORANGE status. PM 2.5 levels are expected to rise into the mid to upper moderate range. *** For Sunday, mostly sunny skies early on will give way to increasing clouds by midday as a frontal system approaches our region from the west. This frontal system will help to concentrate the warm and moist conditions over our area. Light winds in the morning combined with the high dewpoints will lead to increased stagnant conditions, resulting in poor air quality. As a result, PM 2.5 levels are expected to reach into the Code ORANGE range. Even though afternoon temperatures should continue to be warm with highs ranging near the 90 degree mark, expect the afternoon cloudiness and chance of rain during the day to limit ozone formation to the moderate range. ***

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