Sunday, 26 June, 2022
HomeEnvironmentDelhi's AQI deteriorates to 'poor' on Saturday after a day of showing...

Delhi’s AQI deteriorates to ‘poor’ on Saturday after a day of showing improvement

Delhi's AQI was 209 at 9am Saturday as opposed to 137 Friday, when stronger winds and a drastic reduction in stubble burning contributed to cleaner skies.

Text Size:

New Delhi: Delhi’s air quality slipped back into the “poor” category on Saturday, a day after it had improved significantly due to favourable wind speed.

The city’s air quality index (AQI) was 209 at 9 am.

The 24-hour average AQI was 137 on Friday, 302 on Thursday and 413 on Wednesday.

An AQI between zero and 50 is considered “good”, 51 and 100 “satisfactory”, 101 and 200 “moderate”, 201 and 300 “poor”, 301 and 400 “very poor”, and 401 and 500 “severe”.

Stronger winds and a drastic reduction in the contribution of stubble burning were two major reasons for cleaner skies over Delhi on Friday.

The winds slowed down at night allowing the pollutants to accumulate.

The maximum wind speed was 18 kmph on Friday. It is likely to be 15 kmph on Saturday, according to the India Meteorological Department (IMD).

The share of stubble burning in Delhi’s pollution has also reduced significantly as the harvesting season has ended.

The contribution of stubble burning in neighbouring states to Delhi’s PM2.5 levels was just two per cent on Friday and one per cent on Thursday, according to the Ministry of Earth Sciences’ air quality monitor, SAFAR.

The weather department said the maximum temperature was likely to settle around 26 degrees Celsius on Saturday.

Calm winds and low temperatures trap pollutants close to the ground, while favourable wind speed helps in their dispersion.

Also read: India has practically achieved pre-2020 climate targets, says Environment Minister Javadekar


Subscribe to our channels on YouTube & Telegram

Why news media is in crisis & How you can fix it

India needs free, fair, non-hyphenated and questioning journalism even more as it faces multiple crises.

But the news media is in a crisis of its own. There have been brutal layoffs and pay-cuts. The best of journalism is shrinking, yielding to crude prime-time spectacle.

ThePrint has the finest young reporters, columnists and editors working for it. Sustaining journalism of this quality needs smart and thinking people like you to pay for it. Whether you live in India or overseas, you can do it here.

Support Our Journalism

Most Popular