A cold front is expected to stall out across the area on Sunday. Along the front and points south and west, look for continued hot and humid conditions. Scattered showers and thunderstorms are forecast during the afternoon/early evening hours. Brief downpours and gusty winds are possible in the strongest storms. Farther northeast, drier and cooler weather is in store behind the front but some patchy smoke from wildfires in northern Minnesota and southern Canada may move into western and south-central Illinois.