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Delhi had recorded over 1,700 pollution violations in December, the maximum being construction and demolition activity, followed by open dumping of garbage.
According to System of Air Quality and Weather Forecasting And Research (SAFAR), the overall Air Quality Index (AQI) was recorded at 283 till 9:45 am, which falls in the 'poor' category.
Air quality was in the ‘severe’ category on Sunday as wind speed came down in the national capital.
This is despite two NCAP-like plans enforced in Hyderabad. The erstwhile Andhra Pradesh government had implemented an air pollution control programme in Hyderabad from 2003 to 2010.
According to CPCB data, the overall air quality index in Delhi was 410, which falls in the 'severe' category.
The city’s air quality was recorded in the ‘poor’ category on Wednesday and Thursday, as increased wind speed helped in dissipating pollutants and cleansing the air.
Air quality in the country has deteriorated to critical levels in recent years, with the capital New Delhi and 13 other Indian cities in the top 15 of a UN list of the world's most polluted cities.
The maximum temperature on Friday is likely to hover around 21 degrees Celsius along with moderate fog in the morning.
Despite the improvement, air quality still remained in the "very poor" category.
Researchers have found that roadsides that only had hedges were the most effective at reducing pollution exposure, cutting black carbon by up to 63 per cent.
After a day of slight improvement, air quality in the national capital oscillated between ‘severe’ and ‘very poor’ on Saturday.
According to Central Pollution Control Board data, the overall Air Quality Index in the city reached 386, which falls in the very poor category.
Authorities have said that during the nights, combination of calm wind and colder conditions was elevating the pollution level.
Delhi’s air quality remained ‘very poor’ on Saturday, as the weather continued to be unfavourable for dispersion of pollutants.
Delhi’s air quality remained ‘very poor’ on Friday as weather conditions continued to be unfavourable for dispersion of pollutants.