Yesterday my fiancé went into the supermarket to do a shop. My daughter around the same age as this child was really cranky so I decided to stay in the car with her because my partner can do the shop in about 20 mins whereas it takes about an hour with me and baby. So decided to give her a drink and snack in the car and read her a book. He left the front window open about 1/3 and it was 21 degrees. I noticed after about 10 mins she was going red in the face and when I felt her she was getting slightly damp/sweaty.
I opened all the doors and it cooled down almost immediately, but it brought home in a very real how dangerous a hot car is. And also, I hadn’t felt THAT hot, but obviously small children can’t regulate their temperature the same. That poor child.