Ahead of the Diwali festival, there is a respiratory crisis in the country’s capital, Delhi. On Sunday, a decrease in the air quality index was recorded. Due to deteriorating air quality index, Delhi’s average AQI was recorded at 356 today, which is in the ‘very poor’ category. Now the question is why Delhi’s air is deteriorating before Diwali, then it is important to know what factors are responsible for spoiling Delhi’s air and what is their contribution.