The air quality of the national capital has improved to the `poor` category with the Air Quality Index (AQI) dropping to 211 on the morning on Saturday, said Centre-run System of Air Quality and Weather Forecasting And Research (SAFAR). The concentrations of PM 2.5 and PM 10 stood at 201 in the `moderate` category and 94 in the `poor` category respectively.SAFAR in its bulletin said that an increase in temperature and boundary layer height has helped in pushing the national capital`s overall air quality from the `very poor` to `poor` category. "The overall Delhi air quality is in the poor category as forecasted. AQI is forecasted to fall well within the Poor category on 27th and 28th Feb. An AQI between 0-50 is marked good, 51-100 is satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor and 401-500 is considered severe.

Source: dna February 27, 2021 04:41 UTC