How to say “Has our thermometer stopped working, or is it really getting warmer in here?” in Japanese

In Japanese

この温度計(おんどけい)、壊(こわ)れたのかな。それとも本当(ほんとう)に庫内(こない)の温度(おんど)が上(あ)がってる？

Kono ondokei, kowareta no kana. Soretomo hontō ni konai no ondo ga agatteru?