Went to the park with 7 month old baby today. It was super cold, quite windy but also perfectly clear with blue skies. I had the hood of her pram down intermittently. I've noticed now after coming home that her cheeks are slightly red. I'm kicking myself for not being more careful but I'm also not sure what it is. Could it be from the wind or cold rather than the sun? Is she likely to get sunburned in March? Is there any way to tell? I guess I could see if it starts peeling in a few days.
Her cheeks did go red a few times in the cold in winter but because today was such s clear day I'm not sure what it is.
South Asian skin but she's fairly light coloured.
I'm so upset that I've let this happened. I'm never sure where to draw the line in terms of sun exposure to make sure they get a bit of vitamin d but today I was just being careless. 
In what circumstances do other People use sunscreen normally?