In May 2014, the stated that the urban in Delhi is not fit for breathing. It mentioned that according to the Central Pollution Control Board in India, the PM 2.5 level in Delhi air was 286 microgrammes per cubic metre in 2013. PM 2.5 is the fine particulate matter with diameter of 2.5 micrometres or less, for which the WHO-specified safe limit is 10 microgrammes per cubic metre. Also Read - Maharashtra: 35 Percent Schools Reopen After 8 Months, Only 5 Percent Students Attend

However, Delhi seems to be breathing easier for the last few days as sudden shower spells on Sunday and Monday has washed off the suspended particles in the air. According to Gufran Beig, System of Air Quality Weather Forecasting and Research (SAFAR), “Particulate matter levels are within safe limits these days and expected to remain so on Tuesday and Wednesday too. Ozone levels are low too as ozone production depends on sunlight. However, gases like sulphur dioxide (SO2) and oxides of nitrogen will still be present in the air.” Also Read - Puducherry Proposes 10% Quota For Government School Students in Medical Courses

In the recent months, in Delhi has been ‘severe’ or ‘hazardous’ as per the analysis of real-time air quality data by the Centre for Science and Environment (CSE) in the city. On Monday, the Delhi Pollution Control Committee recorded that the PM 2.5 levels dipped down to 17 microgram per cubic metre to 25 microgram per cubic metre at Punjabi Bagh from 10.30am to 3.30am. However, after 5 pm, the levels rose again 135 microgram per cubic metre due to heavy traffic. At Mandir Marg, the PM 2.5 level was noted as 25 to 60 microgram per cubic metre between 10.30am and 6.30pm. Also Read - West Bengal MBBS Seats Increased to 4,000: CM Mamata Banerjee

Higher PM 2.5 levels are linked to respiratory and cardiac conditions like acute bronchitis, chronic obstructive pulmonary disease, asthma, arrhythmias and ischaemic heart disease.

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