Brookfield is a small city located in north-central Missouri with a humid subtropical climate. Summers are hot and humid, with temperatures averaging around 85°F, while winters are cold with temperatures averaging around 30°F. Brookfield is situated near the source of the Yellow Creek, which feeds into the Chariton River. The primary hydrological constituents in the area include nitrate, total suspended solids, and bacteria. The city offers several outdoor recreation opportunities, such as bird watching at the Swan Lake National Wildlife Refuge, fishing at the Brookfield City Lake, and hiking along the Katy Trail State Park.