Sea Lion Aquatic Park

2026 Season Hours & Closures

Dates and times are subject to change without notice. The pool will be closed if the wind chill is below 70 degrees or at the manager's discretion based on inclement weather, low attendance, staffing, state and local guidelines, or unusual circumstances. Refunds will not be given - see rain check policy below for further details. For daily updates, call 630-964-3410, ext. 2, opt. 2.

RAIN CHECK POLICY: A re-entry pass will be issued to person(s) who paid a daily fee when within two hours of purchase, the facility closes for the day due to inclement weather. Rain check re-entry passes will be valid until the end of the season in which the pass was issued. In order to receive a rain check re-entry pass, patron must show a valid entry receipt.

WEATHER & AMENITY CLOSURES: The pool may close without prior notice for inclement weather, air temperature or windchill below 70 degrees, attendance less than 30, mechanical issues or pool maintenance. Refunds will not be issued. In addition, certain amenities may be closed for partial usage at staff's discretion.

Daily Open Swim

Guests are welcome to arrive any time during Open Swim. A discounted admission rate is offered for those entering the facility after 6:00pm.

Senior Swim

Adults age 50 years and older are allowed early admittance to the pool on Sundays only. All who wish to stay for Open Swim must exit the facility and pay the daily fee to re-enter. Free for Season Passholders.

2026 POST SEASON: Now - September 7*

ENTRY
DATE
DAY
TIME
OPEN SWIM August 15 - September 6 Open Saturday & Sunday
Closed Monday–Friday
11:00am
Early Admittance for Passholders
11:30am - 6:00pm
SENIOR SWIM August 16 - September 6 Sunday 10:00 - 11:00am
LABOR DAY Last Day of Season
September 7
Monday 11:00am
Early Admittance for Passholders
11:30am - 6:00pm

*Starting August 10, the aquatic park is closed Monday-Friday, excluding Labor Day, the last day of the 2026 season.

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