The Times of India today (April 15th , page 9) printed a photo of the Indian Meteorological department with a temperature indicator saying 35.6 deg C titled “GADGETS SUFFER HEAT STROKE”
Below the photo was written ” The temperature board at the India Meteorological department shows 35.6 deg C as the maximum temperature even though the figure was 39 degrees C on Monday”
The photo you have shown is that of the right side of the gate which shows current temperature not maximum temperature. The board on the left side of the gate shows max , min temperature and rainfall.
Going by your reports , I would guess you need to protect yourself from the heat and not the instruments at the IMD.