When is Halloween @ the Mercury!?

It is on Saturday, October 31, 2026, from 9 PM to 4 AM, on Halloween itself.

Where is Halloween @ the Mercury!?

It takes place at Mercury Machinewerks, 1009 E Union St, Seattle, WA 98122-3824, United States.

Is Halloween @ the Mercury! 21+?

Yes. The listing says guests must be 21 or older.

How long is Halloween @ the Mercury!?

It runs for about 7 hours, from 9 PM to 4 AM.

Halloween @ the Mercury!: 21+ Halloween Party in Seattle, Sat Oct 31

Name: Halloween @ the Mercury!
Start: 2026-10-31T21:00:00-07:00
End: 2026-11-01T04:00:00-07:00
Location: Mercury Machinewerks

Halloween @ the Mercury!

Mark Saturday, October 31: Halloween @ the Mercury! is a 21+ Halloween party at Mercury Machinewerks in Seattle, WA, from 9 PM to 4 AM. The date lands on Halloween itself. Guests must be 21 or older. Seattle has 63 other Halloween events within three days of this one.

Date & Time

Saturday, October 31 · 9 PM – 4 AM

UTC-07:00

Location

Mercury Machinewerks | Seattle, WA

Halloween is on a Saturday! More details TBA!
dj Hana Solo & guests
Saturday, October 31st
9pm - 3am
$10 21+ w/valid ID
Mercury @ Machinewerks
1009 E Union Lower
Seattle, WA
Safe space for LGBTQIA+ & BIPOC.
No creeps. No haters.
Respect consent. Zero tolerance for anything else.
Respect the venue and staff.
Tip your bartenders.
The Mercury is non-smoking / non-vaping.
Cash-only! There is an ATM on site.
Dress code will be enforced any time the club is open. General dress code is: no blue jeans, no khakis, no sports attire, or anything the staff deems offensive.
The Mercury@Machinewerks is a private club for members and their guests.