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As pollution soared on Diwali night, Delhi’s air monitors fail at key moments

Updated on Oct 22, 2025 01:45 IST

The majority of Delhi’s 39 continuous ambient air quality monitoring stations (CAAQMS) went offline for hours, creating significant data gaps.

Mumbai’s morning after Diwali sees ‘very poor’ AQI in BKC, Colaba | Details

Updated on Oct 21, 2025 06:48 IST

Delhi chokes under post-Diwali smog; citizens say ‘we’re gasping, not living’

After Diwali night, Delhi citizens voiced concern on social media as dense smog blanketed the city.

Published on Oct 21, 2025 03:19 IST

Technical faults, tender delays cripple two of four Gurugram air stations

Smog engulfs South City 1 near Sector 44 in Gurugram on Sunday morning. (Parveen Kumar/HT)

Published on Oct 19, 2025 22:20 IST

Ghaziabad air worst in country, region braces for further decline

The Stage 1 of the Graded Response Action Plan (Grap) remain enforced since October 14 (Sakib Ali / HT)

Published on Oct 18, 2025 22:02 IST

Delhi's AQI 'poor' for 5th consecutive day on Dhanteras, Ghaziabad most polluted

A layer of smog seen engulfed deteriorating the air quality in early hours of the morning at Shadipur in New Delhi, on Saturday, October 18, 2025.

Updated on Oct 18, 2025 13:55 IST

CPCB’s Sameer app now has map, calendar for AQI updates

CPCB’s Sameer app now has map, calendar for AQI updates

Published on Sep 22, 2025 22:42 IST

Delhi breathes its cleanest July air in 10 years

Till 5.30pm on Wednesday, the Safdarjung weather station clocked 15mm of rainfall. (Sanchit Khanna/HT Photo)

Updated on Jul 30, 2025 23:10 IST

Delhi breathes cleanest air in Jan-March period in 3 years; GRAP fully lifted

As of 7 pm on Saturday, the Anand Vihar air quality monitor recorded an AQI of 80, CPCB data showed.

Updated on Mar 15, 2025 16:27 IST

CPCB says Sangam water ‘unsafe’ due to high BOD level. What is it? Explained

Pilgrims take a holy dip in Sangam, the confluence of Ganges, Yamuna and mythical Saraswati rivers, on the occasion of Maghi Purnima during the Maha Kumbh Mela festival in Prayagraj on February 12, 2025. (File)

Published on Feb 20, 2025 04:54 IST

10 locations in city breaches PM2.5 limits on 50 days: Report

10 locations in city breaches PM2.5 limits on 50 days: Report

Updated on Jan 10, 2025 01:48 IST

Delhi's AQI back to ‘severe’ as cold wave continues to grip national capital

According to CPCB, air quality index between 401 and 450 is considered 'severe'.

Published on Dec 22, 2024 03:08 IST

Cold wave in Delhi continues with temperatures as low as 5°C, AQI still ‘poor’

People have been using bonfires, thick blankets, and layered clothes to beat the cold wave in Delhi.

Published on Dec 15, 2024 04:23 IST

CPCB asks Delhi to act on Saidulajab forest encroachment

A complaint over encroachment of forest land was filed with the National Green Tribunal this May. (Representative photo/HT Archive)

Updated on Dec 11, 2024 24:10 IST

Lucknow air inches towards ‘very poor’, Talkatora leads pollution chart

An aerial view of Gomti Nagar amid smog. (HT Photo)

Updated on Nov 20, 2024 15:15 IST

AQI still ‘severe’ in smoggy Delhi, Haryana allows partial school closure

An Anti smog truck spraying mist to settle down the dust particles after the AQI in Delhi is increased at Kartavya Path in New Delhi

Updated on Nov 17, 2024 06:33 IST

How do AQI readings work? Why do the pollution board and IQAir data differ?

Commuters drive amid dense smog in New Delhi

Published on Nov 13, 2024 06:46 IST

Noida and Greater Noida’s AQI see post-Diwali decline, air quality improves to ‘poor’

Noida, India- November 01, 2024: A mild wave of pollution continues in the city early in the morning on the day after Diwali , in Noida, India, on Friday, November 01, 2024. (Photo by Sunil Ghosh / Hindustan Times) (Sunil Ghosh/HT Photo)

Updated on Nov 3, 2024 01:08 IST

Haryana: At 331, Sonepat’s air quality worst in country

According to the Central Pollution Control Board, AQI is calculated only if data is available for a minimum of three pollutants out of which one should necessarily be either particulate matter (PM) 2.5 or PM10. (Picture only for representational purpose)

chandigarh news

Updated on Oct 23, 2024 04:16 IST

CPCB cracks down on illegal dyeing units in NCR

The Najafgarh drain carries water from Haryana to Delhi and joins the Yamuna. (HT Archive)

Updated on Oct 17, 2024 23:36 IST

CPCB to HC: Need four months for report on effluent from STPs in Punjab

The Punjab government has been told that amount be deposited within two days with high court and in case of failure, additional sum of <span class='webrupee'>₹</span>1 crore per day be deposited beyond this period.

chandigarh news

Updated on Oct 3, 2024 03:54 IST

Delhi breathes cleanest air of 2024

Dark clouds and light rainfall at Connaught Place. (RAJ K RAJ /HT PHOTO)

Updated on Aug 8, 2024 22:51 IST

NGT asks Maha to submit response on fake pollution certificates till Nov

As per the NGT order, these EPR certificates are used by companies that utilise plastic packaging to meet legal obligations by ensuring that a percentage of the plastic used by them is recycled. (HT FILE)

Updated on Jul 31, 2024 17:31 IST

Delhi records best air quality of the year with AQI at 56

A person commutes in Delhi covering his face amid air pollution in November 2023. (File Photo)

Published on Jul 7, 2024 15:17 IST

Air pollution takes toll on mental health: Delhi govt informs NGT

The tribunal, noting CPCB's reply, said there was no monitoring of certain air pollutants, including ammonia, lead, nickel arsenic and Benzo(a)pyrene. (Arvind Yadav/ Hindustan Times)

Published on Apr 10, 2024 02:03 IST

MPCB to take action against establishments violating pollution norms

The MPCB before the action on Monday (February 26) issued a public notice instructing all establishments to follow the guidelines issued by the CPCB in past. (REPRESENTATIVE PHOTO)

Published on Feb 28, 2024 14:19 IST

Pavana River enters ‘priority 1’ category due to increase in pollution

Earlier, the river was less polluted and had been categorised as priority 2 by the CPCB. (HT PHOTO)

Updated on Feb 26, 2024 24:34 IST

Calm winds behind air quality drop, say experts

HT Image

Updated on Feb 17, 2024 01:26 IST

Centre holds off stricter curbs for now even as Delhi AQI turns severe

Air quality in Delhi turned ‘severe’ on Wednesday. (File Photo)

Published on Jan 25, 2024 01:04 IST

CPCB no longer sharing hourly air quality data

New Delhi, India- December 01, 2023: Commuters on Mayur Vihar Road in smoggy morning, in New Delhi, India, on Friday, December 01, 2023. (Photo by Sunil Ghosh / Hindustan Times)

Updated on Dec 1, 2023 19:43 IST

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