The AQI for Delhi fell to 302 on Thursday, which is classified as "Very Poor," from "Severe" levels earlier this week. The overall AQI was 294 on Friday.
Following Wednesday's rainfall, which helped lower the AQI and led authorities to lift the GRAP 4 restrictions, the fog situation appears to have improved in Delhi and the surrounding cities.After a significant improvement in air quality, the Commission for Air Quality Management (CAQM) on Thursday annulled Stage-IV measures of the Graded Response Action Plan (GRAP) for Delhi and the National Capital Region (NCR).
The Air Quality Index (AQI) for Delhi fell to 302 on Thursday, which is classified as "Very Poor," from "Severe" readings of more than 400 earlier this week. The overall AQI on Friday morning was 294.
"Good" is defined as having an AQI between zero and fifty, "satisfactory" as between fifty and one hundred, "moderate" as between 101 and 200, "poor" as between 201 and 300, "very poor" as between 301 and 400, and "severe" as between 401 and 500.
Weather in Delhi | Delays in flights
Friday's weather is expected to be partly cloudy, with smog and dense fog expected in most places in the morning and extremely dense fog in a few isolated spots, according to the India Meteorological Department (IMD).
According to IMD, there may be lingering shallow fog or haze in the evening and at night.
News agency ANI posted a video of the Indira Gandhi International (IGI) airport's flight chart, which revealed that multiple planes were delayed on Friday morning.
At 7:50 a.m., Delhi Airport issued a warning that flights that are not CAT III compliant might be impacted, advising travelers to check with the airline in question to stay informed about the schedule.
Aircraft can operate in reduced visibility thanks to CAT III facilities.
After rain, Delhi had bright sky on Thursday. According to officials, the minimum temperature was 10.3 degrees Celsius, which is 2.7 degrees higher than usual.
The India Meteorological Department (IMD) reported 3.7 mm of rainfall at Safdarjung, Delhi's main meteorological station. Rainfall totals at other meteorological stations were 8.6 mm at Palam, 7.5 mm at Pusa, and 4 mm at Mayur Vihar.
Delhi's highest recorded temperature was 19.6 degrees Celsius, which is typical for the season.
According to the IMD, Delhi witnessed extremely heavy fog on the morning of January 15, with visibility at Safdarjung and IGI Airport reaching zero at 8:30 am and continuing till 11:30 am. It further stated that CAT-III activities continued till 9:30 am and that this was the first time of the season that there was heavy fog.
The Center's panel on Delhi-NCR air quality annulled the GRAP 4 limitations on Thursday, a day after they were announced, due to a decrease in pollution levels. Due to the accumulation of pollutants in the area caused by low temperatures, fog, and calm winds, curbs were enforced on Wednesday.
All construction operations are prohibited, non-essential polluting trucks are not allowed in Delhi, and school classes—aside from those in classes 10 and 12—must switch to hybrid modes as part of the stage 4 limits.
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