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nitrogen dioxide news

Preventing a decade of poor winter air quality

Poor AQI in winter
climate change
Updated on Feb 11, 2026 04:41 pm IST

High nitrogen dioxide levels choked Delhi's January air at many stations: Study

High nitrogen dioxide levels choked Delhi's January air at many stations: Study
delhi news
Published on Feb 04, 2026 06:58 pm IST

CSE study: Vehicles key culprit behind pollution load

Dense early-morning fog seen in Dwarka on Monday. (Vipin Kumar/HT Photo)
delhi news
Published on Dec 02, 2025 03:38 am IST

Delhi’s NO2 levels 3 times the safe limit at hot spots

Vehicles moves through a thick layer of smog, at ITO Yamuna Bridge in New Delhi, on Friday. (RAJ K RAJ /HT PHOTO)
delhi news
Published on Nov 08, 2025 05:28 am IST

Amid spike in pollution, Delhi’s high NO2 levels a sign of worry

Heavy smog in New Delhi on Tuesday. (Raj K Raj/HT PHOTO)
delhi news
Updated on Nov 08, 2023 05:34 am IST

CSIR-IITR Pre-Monsoon Report 2023: Pollution in Lucknow down from last year but still above NAAQ standard

Aliganj most polluted among residential areas, air in Chowk most contaminated among commercial areas; Gomti Nagar, Alambagh & Charbagh among the noisiest, reveals study. (HT Photo)
others
Updated on Jun 04, 2023 11:21 pm IST

Do you live near a busy road? Know its effect on blood pressure as study shows…

people who had high exposure to both traffic noise and air pollution had the highest hypertension risk, showing that air pollution plays a role as well.
science
Published on Mar 26, 2023 04:17 pm IST

EU sues Portugal for poor air quality caused by nitrogen dioxide

More than 70% of Covid-19 cases in Portugal’s Lisbon region are from the Delta variant, which is said to be rapidly spreading to other parts of the country.
world news
Published on Nov 12, 2021 05:48 pm IST

All about respiratory allergies: 5 facts that you should know of

Respiratory allergies are not to be taken lightly, as negligence can lead to asthma, bronchial allergies and other pulmonary disorders.
brand stories
Published on Feb 12, 2021 01:49 pm IST

‘PUC certificates don’t cover major pollutants’

HT Image
mumbai news
Updated on Dec 11, 2019 12:06 am IST

Plants better than tech for reducing air pollution

Plants and trees may be better and cheaper options than technology to mitigate air pollution, says a new study.
lifestyle
Updated on Nov 10, 2019 09:53 am IST

Pollution body starts monitoring metals in Delhi’s air

The concentration of some of these toxic metals such as barium has been found to shoot up by at least nine times above the safe standards a day after Diwali. The roads are covered with a white layer of aluminium dust.
delhi news
Published on Nov 03, 2018 10:06 am IST

Pune’s falling air quality index cause for alarm

The quality of air in the city has slipped from the ‘good’ benchmark to ‘satisfactory’ benchmark within a short period of one year.
pune news
Updated on Jun 06, 2018 02:41 pm IST

Dirty Money: VW apologises for conducting diesel tests on animals

business
Updated on Apr 25, 2018 01:13 pm IST
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