Yesterday Lytton, BC, Canada hit a record high heat of 49.5 C (121.1 F).
Only the United States (in Death Valley), Mexico and Australia have beaten that record (not counting Asia, the Middle East and Africa - each region has multiple countries to have higher record heats).
The United States record is a bit ... iffy. Nobody denies that the death valley is hot. However, that is one of only two recorded temperatures in the history of the world greater than 130 F (the other being French Tunisia, 1931). To put things in perspective, the hottest temperature ever recorded in Las Vegas is 47.2 C (117 F). The hottest temperature ever recorded in Europe was 48.0 C (118.4 F) in Athens, 1977.
If you want a complete list of countries which have recorded temps above 120 F: