Delhi: Air quality deteriortates beyond severe
The air quality in Delhi deteriorated beyond the "severe" level because of a ground-level dust storm in western India which increased coarser particles in the air, the Central Pollution Control Board data showed.
The CPCB data showed that the PM10 (particles with diameter less than 10mm) level was beyond "severe" at 778 in Delhi-NCR area and 824 in Delhi particularly, leading to hazy conditions and limiting visibility.
Gufran Beig, a scientist at the Centre-run System of Air Quality and Weather Forecasting and Research institute, said the dust storm deteriorated the air quality in Delhi-NCR.
"There
was
a
ground-level
dust
storm
in
the
western
part
of
the
country
that
increased
drastically
coarser
particles
in
the
air,
causing
a
spike
in
pollution
levels
in
Delhi,"
he
said.
But
the
air
quality
should
improve
later
today,
he
said.
"Such dust storms accompanied by high-speed winds (30-40 kmph) do not last too long due to which the air quality will return to normal by this evening," Beig added.
According to CPCB, the air quality index at several places in Delhi crossed the 500-mark, with east Delhi's Anand Vihar area recording an AQI of 891.
An AQI between 0-50 is considered Good, 51-100 Satisfactory, 101-200 Moderate, 201-300 Poor, 301-400 Very Poor, and 401-500 Severe.