Five Things You Need to Know Today: June 20

1. Hot, hot, hot! , with highs in 90s and a heat index around 103. Make sure to stay cool, keep hydrated and remember to check on the elderly. 

2. New website. Historic Newton has a new website! Check out the new look. 

3. The story of the Charles River clean-up. Kate Bowditch, director of projects at Charles River Watershed Association, on the story and process behind cleaning up the Charles River. The event starts at 7 p.m. and admission is $5. The Waterworks Museum is just over the Newton line at 2450 Beacon St. in Boston.

4. Summer Film Festival.  will host its starting tonight at 7 p.m. The film, which will focus on the topic of "pilgrimage", will be followed by a discussion. The event is free and open to everyone. 

5. Committee meetings. The Board of Aldermen's Public Safety & Transportation, Public Facilities and Programs & Services Committees will meet tonight in rooms 202, 209 and 222, respectively. Public Facilities and Public Safety will start at 7 p.m. while Programs & Services will start at 7:45 p.m. To view the agendas for these meetings, click the .pdfs above.