Wisconsin Sees Allergy Surge as Tree Pollen Peaks in Spring

The Wisconsin Department of Health Services has issued warnings about rising respiratory illnesses tied to spring pollen, particularly from trees like birch, oak, maple, pine, ash and cottonwood, which dominate early season allergens from late March into April.[2][3] As warmer temperatures trigger blooming, pollen counts soar, exacerbating asthma and allergies statewide. Doctors in southern Wisconsin, including those at Group Health Cooperative and UW Health, report increased patient visits for symptoms like runny noses, itchy eyes, sneezing, coughing and sore throats.[4][5][6] In Milwaukee and surrounding areas, the surge aligns with peak tree pollen in early spring, transitioning to grass pollen like Kentucky bluegrass by May through July.[2] The DHS recommends practical steps: shower after outdoor time to remove pollen, use air conditioning with windows shut during high counts, vacuum frequently and avoid mowing or leaf piles.[3] Apps like My Pollen Forecast or WeatherBug's Live Pollen Map help residents track local levels and time medications such as Flonase nasal sprays or saline rinses.[5] While not as severe as winter's respiratory viruses, the allergy uptick strains clinics from ThedaCare communities to Madison's UW Health facilities.[1][6] Over-the-counter remedies provide relief, but providers advise consulting doctors for persistent symptoms, emphasizing action plans for asthmatics. With outdoor season underway, Wisconsinites are advised to garden wisely, skip fertilizers and keep pets pollen-free by wiping them down.[3][5]