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AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
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Air Quality Index (AQI)
Moderate Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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Particles (PM2.5)
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Forecast Discussion: FORECAST SUMMARY: Tuesday, August 19h, 2014 through Thursday, August 21st, 2014 Ozone: 8-hour concentrations are expected to be Good to Low Moderate through forecast period… PM-2.5: 24-hour Fine Particulate concentrations are expected to be mostly Moderate through the forecast period… FORECAST DISCUSSION: An upper air low pressure system combined with a weak surface low will provide convective activity during the day Tuesday. Such activity will keep ozone formation in check although fine particulates will remain in mostly the Moderate range. Wednesday will dry out although warmer and more humid air will be advancing toward Michigan behind a warm front. There is a good chance for unsettled weather Thursday night into Friday as the warm front moves northward. The warm front should be through later Friday and some high pressure ridging will building in during Saturday. That should keep most shower activity at bay although the chance of pop-up showers will remain. With that will be some of the warmest and most humid air of the summer. Some Air Quality issues could form within that air mass although it should not be too severe. We will review the most recent air quality models on Thursday and get a better idea about the weekend. EXTENDED FORECAST: Cooler weather should return to the region early next week… Forecast updated by Jim Haywood: Tuesday, August 19th, 2014 Next forecast update: Thursday, August 21st, 2014

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