Chief executive of the mental health charity Sane, Marjorie Wallace, has told Daybreak that 'celebrities are sending out the wrong message on drug use'.
She said: "It is difficult to educate young people on drug abuse when celebrities are saying its fine.
"We need to say to these people, you are playing Russian roulette with your brain."
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The seven-month-old baby girl is believed to have been left in a car in Co Tipperary for several hours.
At times a little fair weather cloud may bubble up - and there will be a fairly brisk southeasterly breeze - but it will still feel hot.
Analysis of data from hospitals in England showed patients were waiting longer for ambulances, treatment and admission.