The heatwave conditions are expected to affect residents in Mumbai, Raigad, Ratnagiri, Sindhudurg, and Thane. Prolonged exposure to high temperatures can lead to heat-related illnesses such as dehydration, heat exhaustion, and heatstroke, particularly for vulnerable groups like the elderly, children, and outdoor workers. The hot and humid conditions in Thane may exacerbate discomfort and health risks. Residents are advised to stay hydrated and avoid outdoor activities during peak heat hours.