Delhiites wake up to hazardous air, AQI crosses 400 at 27 stations
New Delhi (PTI): Delhi woke up to choking air on Tuesday morning as thick fog and haze engulfed the city, with AQI levels crossing 400 (severe category) at 27 monitoring stations and several others slipping into the 'severe plus' range, exposing residents to extremely hazardous pollution.
At 9 am on Tuesday, the city recorded an AQI of 415, slipping from the 'very poor' category a day earlier, as pollution levels continued their upward climb, according to data from the Central Pollution Control Board (CPCB).
Out of 40 monitoring stations, 27 recorded severe air quality with AQI readings above 400, a level known to have serious health impacts.
Five stations were in the 'severe plus' category with AQI readings above 450, with Anand Vihar recording an AQI of 470, Nehru Nagar (463), Okhla (459), Mundka (459) and Sirifort (450), as per data from the CPCB's SAMEER app.
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According to the CPCB standards, an AQI from 0-50 is considered 'good', 51-100 'satisfactory', 101-200 'moderate', 201-300 'poor', 301-400 'very poor', and 401-500 'severe'.
On the weather front, dense fog led to a sharp drop in visibility, with Palam recording 50 metres visibility under dense fog conditions with west-southwesterly winds at 5 kmph at 8 am, while Safdarjung reported 100 metres visibility with calm winds at the same time.
Visibility improved slightly by 8.30 am, with Palam recording 100 metres visibility under dense fog with west-southwesterly winds at 5 kmph and Safdarjung reporting 150 metres visibility with calm winds.
Delhi's minimum temperature dropped to 8.8 degrees Celsius, which is 1.3 degrees above normal, the India Meteorological Department (IMD) said.
The maximum temperature is expected to hover around 23 degrees Celsius, with the forecast indicating dense fog conditions during the day.
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ISRO successfully conducts second integrated air drop test for Gaganyaan mission
New Delhi (PTI): Space agency ISRO has successfully conducted the second integrated air drop test (IADT-02) for the upcoming Gaganyaan mission at the space station in Andhra Pradesh's Sriharikota.
The system is essential to ensure a safe recovery of the crew module -- the capsule in which astronauts sit during a human flight -- during re-entry and landing.
Union minister Jitendra Singh congratulated the Indian Space Research Organisation (ISRO) for successfully conducting the test.
"Congratulations #ISRO for the successful accomplishment of Second Integrated Air Drop Test (IADT-02) for #Gaganyaan, India's first Human Space flight scheduled next year. The second Integrated Air Drop Test (IADT-02) was successfully conducted at Satish Dhawan Space Station Sriharikota," Singh said in a post on X.
The IADT-02 follows the successful completion of the first IADT, which took place on August 24, 2025, at the Satish Dhawan Space Centre in Sriharikota.
Air drop tests recreate the last leg of a spacecraft's return to Earth. An aircraft or helicopter drops the spacecraft from a height to test various systems under different scenarios.
These are the deployment of the parachute system in case the mission is aborted mid-flight, system performance when one parachute fails to open and the spacecraft's orientation and safety during splashdown etc.
In the IADT-02 test, a simulated crew module, weighing about 5.7 tonnes, was lifted by an Indian Air Force Chinook helicopter to an altitude of about three kilometres and released over a designated drop zone in the sea, near the Sriharikota coast.
In a statement, the ISRO said, "Ten parachutes of four types were deployed in a precise sequence during the descent of the crew module, gradually reducing the velocity for safe touchdown. Subsequently, the simulated crew module was successfully recovered in coordination with the Indian Navy."
