Can I bring it?
Can I bring weather barometer or thermometer (mercury) on a plane?
Can I bring weather barometer or thermometer (mercury) on a plane?
Rule at a glance
Weather Barometer or Thermometer (Mercury) baggage decision
- Carry-on
- Allowed · review TSA Special Instructions
- TSA lists this as allowed with Special Instructions. Check the official item page for any packing or declaration requirement before travel.
- Checked baggage
- Not allowed
- Not permitted in checked baggage.
- Scope
- This answer is based on published guidance from Transportation Security Administration. It addresses departure-security screening; your airline, transit point and destination country can apply additional restrictions.
Send this rule directly to the person you are travelling with.
Why?
This result follows the TSA listing for Weather Barometer or Thermometer (Mercury). Airline, route, quantity, packaging, and destination rules may add restrictions.
Before you pack and screen
Check the bag type before packing
A restriction in one bag does not automatically mean the item is allowed in the other. Review both results on this page, the official source, and any operating-airline condition.
Before you fly
- 1Check the departure-security rule and the Transportation Security Administration source again before travel.
- 2Check the item’s components, sharp parts, battery and fuel status.
- 3Also check your operating airline’s baggage policy and destination import rules.
Official source
Transportation Security Administration
Last verified · Sep 2026
This finder result links to the official source and is not published as a standalone search landing page.
Frequently asked questions
Can I bring weather barometer or thermometer (mercury) in carry-on baggage?
TSA lists this as allowed with Special Instructions. Check the official item page for any packing or declaration requirement before travel.
Can I pack weather barometer or thermometer (mercury) in checked baggage?
Not permitted in checked baggage.