It just takes a day for things to change in Delhi.

Just when the week begin post G20 Summit the air quality dropped from "Good" to "Satisfactory" on Monday.

By the end of Monday the air quality was 53.

With restrictions being removed from Delhi and things being back to normal the air quality of Delhi again started deteriorating.

On Monday, the maximum temperature at the city's base station was 33.5 degrees Celsius, the season's normal against 28.3 degrees Celsius a day earlier. The minimum was 23.7 degrees Celsius, two notches below normal against 23.5 degrees Celsius a day earlier.

According to Central Pollution Control Board (CPCB), the AQI was on Sunday was 45, the cleanest air that residents have breathed so far this year.

The CPCB data show that the 24-hour average PM10 concentration for Delhi-NCR was 30.1 micrograms per cubic metre on Monday at 7am but it rose to 48.1 micrograms per cu metre at 7pm.

Source: TimesofIndia