Soybean aphid populations continue to increase in scattered fields especially across the upper Midwest in Minnesota and Wisconsin. Recent and anticipated heavy rain events through mid-week this week and expected heat later this week across mainly the western reaches of the risk area may limit population increases for the time being. Nonetheless, with many soybean fields in the critical early reproductive stages of growth, growers are urged to monitor population dynamics where soybean aphids are present in the next week most notably from eastern South Dakota into Minnesota and Wisconsin. Low risks extend from the central Dakotas east through Minnesota, northern Iowa, Wisconsin, and into lower Michigan and southern Ontario, Canada, as well. Population increases may become more favorable by next week with less heat and potentially fewer and less intense rain events especially across the upper Midwest.