A chart in the 2020 Chicago Region Tree Census Report shows Chicago’s canopy coverage has dropped from 19 percent in 2010 to 16 percent in 2020. [The Morton Arboretum]

Aldermen are scheduled on Monday to discuss the urban heat island effect in Chicago and consider various ways to combat the phenomenon that causes temperatures to soar in areas with little tree cover.

The subject matter hearing, scheduled at 10 a.m. in the City Council Committee on Environmental Protection and Energy, is the result of a resolution (R2020-452) introduced by Ald. George Cardenas (12), who chairs the committee.