Numerous wildfires have been ongoing across southern Ontario, filling the skies across southern Canada, the Great Lakes, and Northeast will smoke the last couple of days.
With high pressure nearby, the smoke has also made an appearance locally in the Stateline, although a little more prominent in central Illinois. However, it won't be long until we start to see more smoke not only filtering out the sun the next couple of days but also moving down closer to the surface of the earth.
Air Quality Alerts have been issued for McHenry County through Wednesday evening and for Green, Rock, and Walworth counties until Noon Thursday. I wouldn't be surprised to see those alerts extended both in time and overall coverage as wildfire smoke is currently forecast to shift further down the Great Lakes and Wisconsin, eventually into northern Illinois as early as Wednesday night.
The position of high pressure to our south will essentially cause the incoming smoke to 'stall' close to the state line/northern Illinois through Thursday. The impact of this could very well cause our visibility to drop into Thursday morning, as well as impacting those who have breathing issues or are more susceptible to air pollutants/particulates.
While the heat has taken center stage the last couple of days, and rightfully so, our attention should also be on the potential for increasing smoke through the end of the week.
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