Madison, WI – According to the Wisconsin Department of Natural Resources (DNR), Wisconsinites are urged to limit their time outdoors due to poor air quality caused by smoke from Canadian wildfires. The DNR issued a recommendation on June 3, 2025, advising residents to reduce outdoor activities through June 4, 2025, as air quality advisories remain in effect across the state. This alert comes as smoke from wildfires burning in Canada has drifted south, impacting air quality and posing potential health risks, especially for vulnerable populations.
The presence of wildfire smoke can lead to a variety of health concerns, including respiratory issues, eye irritation, and exacerbation of pre-existing conditions such as asthma or heart disease. The DNR emphasizes that children, older adults, and individuals with respiratory or cardiovascular conditions are particularly at risk during periods of poor air quality. To mitigate these risks, the department advises staying indoors as much as possible, keeping windows and doors closed, and using air purifiers if available. For those who must go outside, wearing a mask rated to filter fine particles, such as an N95, is recommended to reduce exposure to harmful pollutants.
The Wisconsin DNR is closely monitoring air quality levels in collaboration with the Wisconsin Department of Health Services and other regional partners. Real-time air quality data is accessible through the AirNow website, which provides updates on conditions across the state and offers guidance on protective measures. The DNR also encourages residents to stay informed by checking local news and weather reports for the latest updates on air quality advisories. As of the latest reports, the smoke is expected to linger over Wisconsin for at least another day, though changing wind patterns could alter the duration and intensity of the impact.
This event underscores the broader implications of wildfire activity beyond national borders and highlights the importance of preparedness for such environmental challenges. Wildfires in Canada, often fueled by dry conditions and high temperatures, have become more frequent and intense in recent years due to climate change. The resulting smoke can travel hundreds of miles, affecting air quality in regions far from the fire’s origin. Wisconsin, like many other states in the Midwest and Northeast, has experienced similar episodes in the past, prompting officials to refine response strategies and public communication efforts to better protect communities.
In addition to health recommendations, the DNR is advising against outdoor burning during this period, as it could further degrade air quality. Activities such as campfires, brush burning, and other open fires should be postponed until conditions improve. The department also reminds residents that state parks and trails remain open, but visitors should exercise caution and limit strenuous activities if they choose to venture outdoors. This guidance aligns with the DNR’s broader mission to safeguard public health while maintaining access to natural resources and recreational opportunities.
To provide context on the scale of the issue, data from the National Interagency Fire Center indicates that as of early June 2025, over 2 million acres have burned in Canada due to wildfires this year alone, contributing to widespread smoke dispersion across North America. This statistic highlights the significant environmental impact of these fires and the challenges faced by regions downwind, including Wisconsin. Furthermore, a specific example of the impact can be seen in communities along Wisconsin’s northern border, such as those near Lake Superior, where air quality indices have reached unhealthy levels in recent days, prompting local schools to cancel outdoor activities and events.
The DNR’s response to this air quality event is part of its ongoing commitment to protecting Wisconsin’s environment and ensuring the safety of its residents. By issuing timely advisories and providing actionable recommendations, the department aims to minimize the health risks associated with wildfire smoke while fostering awareness of broader climate challenges. As conditions evolve, the DNR will continue to provide updates and resources to help residents navigate this temporary but significant environmental issue. The department also encourages community members to support efforts in conservation and sustainability to address the root causes of such events over the long term.
For more information, visit Wisconsin Department of Natural Resources.