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Air quality alert issued for all of Wisconsin | By Wisconsin DNR

August 17, 2023 – Washington Co., WI – The Wisconsin Department of Natural Resources has issued an Air Quality Advisory from 6 a.m. CDT Thursday until 6 a.m. CDT Monday. This advisory affects the entire state of Wisconsin.


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Smoke originating from wildfires in Canada will move into the state from the northwest Thursday morning and travel south southeast throughout the day.

The PM2.5 Air Quality Index is expected to range from the UNHEALTHY FOR SENSITIVE GROUPS level to the UNHEALTHY level.

Remember, the UNHEALTHY Air Quality Index (AQI) level is unhealthy for everyone. People with heart or lung disease, older adults, and children should consider avoiding prolonged or heavy exertion and everyone else should consider reducing prolonged or heavy exertion.

The best chance for UNHEALTHY AQI PM2.5 will reside across western Wisconsin on Friday, as high pressure moves over the state and limits atmospheric mixing. Over the weekend, the ozone AQI is expected to range from the UNHEALTHY FOR SENSITIVE GROUPS level to the UNHEALTHY level, due to favorable weather conditions alongside the presence of wildfire smoke.

On both Saturday and Sunday, mostly UNHEALTHY FOR SENSITIVE GROUPS Air Quality Index ozone concentrations are expected inland of the lake breeze, while those areas within the lake breeze will have a better chance of reaching UNHEALTHY AQI ozone concentrations. Remember, ozone concentrations are typically maximized during the afternoon or evening before decreasing overnight into the next morning.

For more information on current air quality, click HERE.

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