Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Diarrhea is of viral origin, heat may be a factor, putting toys like stuff in the mouth is a major factor at this age and anything by mouth other than breast milk is also a culprit. AC temperature is fine. It is safe and best for the overall health of your daughter for walk in frame taking care to avoid exposure to excess heat, dusty atmosphere at least. Suggestions for better recovery: • Avoid any commercial milk products of powder formulations • Maintain hydration with boiled water, ORS, and sufficient breastfeed • Take care she is not putting any stuff in the mouth • In our clinic, we recommend antibiotics with or without zinc preparations according to the case. Need watch for her urine output or fever if any Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Bhagyesh V. Patel