1 / 4Delhi reeled under sweltering heat as the maximum temperature soared to 44 degrees Celsius the season’s highest on Friday.2 / 4Head of the Indian Meteorological Department’s regional weather forecasting Centre in Delhi, Kuldeep Srivastava, said this is the highest temperature of the season so far3 / 4The heatwave conditions are expected at isolated places, he added. However, a duststorm and cloudy sky under the influence of a fresh western disturbance may provide some relief from Saturday evening onwards.4 / 4Delhi’s 24-hour Air Quality Index (AQI) was recorded in the ‘poor’ category with a reading of 227 An AQI between zero and 50 is considered ‘good’, 51 and 100 ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor’ and 401 and 500 ‘severe’.The city experienced a long spell of cloudy weather and sporadic rainfall from April 21 to May 7, which is rare during this time of the year. May has been historically the hottest month in Delhi, with a mean maximum temperature of 39.5 degrees Celsius.