1. It should be a nice spring day, with sunny skies and temperatures reaching 56 degrees, according to the National Weather Service. The overnight low is 38 degrees.

2. A public open-house-style meeting on the Mass Ave Corridor Project is set for Wednesday, April 4, from 6 to 8 p.m. in the Hardy School cafeteria. At the meeting, the 75 percent design plans recently submitted to the state Department of Transportation (MassDOT) for their review will be on display for residents and business owners to drop in, take a look and ask questions, according to the town. The plans show new landscape and streetscape details and a street alignment change at Linwood Street that makes the eastbound (toward Cambridge) direction two lanes for the entire project. The updates plans can also be viewed online.

3. Arlington’s Sean Dorrance Kelly, an author and chair of Harvard’s philosophy department, will discuss his New York Times bestseller, “All Things Shining: Reading the Western Classics to Find Meaning in a Secular Age,” at 7:30 p.m. tonight in the Arlington High School Commons. The talk is one of Arlington Community Education’s “Tuesday Night Conversations” this spring, which are co-sponsored by Robbins Library. Tickets are $5 in advance or at the door – Arlington High School students get in free. For more information contact Community Education at 781-316-3568 or by visiting its website.

4. The spring sports season started Friday but really gets underway today, as 10 local teams are in action.

Arlington High School:

Boys’ track at Wakefield, 3:30 p.m.
Girls’ track hosts Wakefield, 3:30 p.m.
Boys’ tennis at Boston Latin, 4 p.m.
Girls’ lacrosse at Watertown, 4 p.m.
Boys’ lacrosse hosts Watertown, 6:30 p.m.

Arlington Catholic:

Boys’ tennis hosts Cambridge, 3:30 p.m.
Girls’ tennis at Archbishop Williams, 3:30 p.m.
Boys’ track at Bishop Fenwick, 3:30 p.m.
Girls’ track at Bishop Fenwick, 3:30 p.m.
Boys’ lacrosse at Weymouth, 4 p.m.

5. Meetings: The Vision 2020 Spy Pond Committee will meet at 7:30 p.m. in the Town Hall Annex. The Permanent Town Building Committee will also meet at 7:30 p.m. in the Town Hall Annex.