"It is not even 24 hours since the Diwali celebrations, every person is breathing normally and no person is having difficulty in breathing. There is no smog," he said.
Vardhan said his ministry had "prepared even more" this year.
"I personally wrote to 2-2.5 lakh school principals across the country. In Delhi, thousands of children campaigned for green and 'Harit Diwali' for the past two months... It is the result of these (steps) that this year (the air quality) is much better," he said.
However, SAFAR has predicted a relatively cleaner post- Diwali air due to favourable meteorological conditions, which are helping prevent the smoke-filled air from the agricultural belt of Haryana and Punjab from entering the national capital.
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Vardhan said that for monitoring of air quality days have been classified into 'good', 'satisfactory' and 'moderate'.
"'Poor' and 'very poor' days significantly came down. 'Severe' days did not even happen this year," he said.
Last year, the air quality in Delhi and surrounding areas deteriorated significantly due to rampant cracker bursting. This year, the Supreme Court banned the sale of firecrackers in Delhi-NCR before Diwali and the ban would continue till November 1.
The Union minister said he has held meetings with officers from the states of National Capital Region on stubble burning and efforts were on to provide farmers with an alternative. He reiterated that scientists have been asked to develop "zero-pollution" crackers to tackle pollution.
An environment ministry statement said that comparison of air quality until this period with last year showed positive changes.
The year 2017 has seen a few 'good' days (AQI<50), unlike last year when there were no 'good' days. The number of 'satisfactory' days (AQI between 51 and 100) up to October 19 has nearly doubled, it said. AQI refers to air quality index.
The number of 'moderate' days (AQI between 101 and 200) has increased nearly 22 per cent while the number of 'poor' (AQI between 201 and 300) days has declined almost by 10 per cent, it said.