A dust haze engulfed the national capital's skyline today even as Delhiites continued to reel under hot conditions with minimum temperature climbing to 34.7 degree Celsius. The minimum temperature was highest in the last 15 years in the month of June.<br/> The dust haze also affected movement of vehicular traffic as visibility dropped to 500 metres in some areas of the city. Met office says the dust haze has occurred due to an approaching western disturbance and strong dust storm in parts of Rajasthan. <br/>Air spoke to Dr Vikram Jaggi, Medical Director of Asthama Chest and Allergy centre on the impact of the Dust strom on the Asthmatic patients.<br/>