Can I Bring Thermometer containing mercury on a Plane to Canada?
Thermometer containing mercury
Not Allowed
Prohibited in both
According to CATSA guidelines, thermometer containing mercury: Permitted in carry-on baggage only if carried by a representative from a government weather bureau or similar official agency. May be permitted in checked baggage if approved by air carrier.
The final decision rests with the CATSA officer on whether an item is allowed through the checkpoint. Official CATSA Rules →
Quick Rule
Carry-on baggage
Not Permitted
Checked baggage
Airline Rules Apply
CATSA Officer
Makes the final decision
Source: Official CATSA Regulations ↗Updated: May 20, 2026
Also known as
Thermometer containing mercury
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