KARACHI, June 20: The meteorological office has forecast a hot and humid day with chances of dust, thunderstorm and a light rain in the metropolis for Thursday. An official of meteorological department said a system currently developing over Bombay was moving slowly towards Sindh coastal areas. The system would take a few days to reach Karachi, he said, adding that the maximum temperature on Thursday is expected to remain between 35 and 37 degrees centigrade.—APP