Delhi records AQI of 329, keeping the capital in the very poor air quality category even as conditions showed marginal improvement from the severe smog that paralysed the city for three consecutive days. The Central Pollution Control Board (CPCB) said that the air quality in Delhi at 7 a.m. on Wednesday was still below the severe level, with a few areas falling into the poor category. Pollution levels decreased from the emergency-like conditions earlier in the week, when visibility drastically reduced, and daily life was severely disrupted, thanks to stronger surface winds and a gradual thinning of the fog.

Despite a brief weather reprieve, the 24-hour average AQI stabilized at 354, indicating persistent pollution. By Wednesday morning, the heavy pollution that had clogged highways, delayed flights, and caused numerous traffic accidents had significantly subsided. However, medical professionals continue to caution that extended exposure to extremely low air quality can potentially exacerbate cardiovascular and respiratory diseases, especially in children, the elderly, and people with pre-existing disorders.

Weather Conditions and Air Quality Dynamics

Although the reduction in pollution levels may be temporary, meteorological variables were crucial. Delhi and the surrounding areas are expected to see moderate fog throughout the day, according to the India Meteorological Department (IMD). This could once more trap pollutants close to the surface.

Essential observations about pollution and weather include:

• Wind support: On Tuesday, somewhat stronger winds aided in the dispersal of stored pollutants.
• Fog influence: Although previous fog made it harder to see, by Wednesday morning, receding fog helped spread pollutants.
• Temperature trends: It is anticipated that the highest and lowest temperatures will be approximately 24°C and 10°C, respectively.
• Winter anomaly: Delhi’s usually severe winters are conspicuous by their absence, as the city has not yet seen a cold wave this season.

Rather than being caused by traditional winter cooling, the fog that has engulfed the National Capital Region (NCR) has been chiefly caused by pollution. Hazardous air particles frequently exacerbate fog formation, which worsens visibility and health effects at the same time, according to experts.

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Emergency Curbs and Government Response

While Delhi records an AQI of 329, authorities continue to enforce stringent emergency measures under the Graded Response Action Plan (GRAP) IV, the strictest set of pollution curbs. During periods of high pollution, these limitations are intended to reduce emissions from automobiles, construction, and industrial sources.

Currently implemented measures consist of:

• Fuel restrictions: Fuel is not allowed for vehicles without current Pollution Under Control (PUC) certificates.
• Vehicle bans: Non-Delhi automobiles that don’t meet BS-VI emission standards are not allowed to enter.
• Activity restrictions: There are stringent restrictions on construction and demolition operations.
• Transport advisories: People are urged to stay indoors as much as possible and to take public transportation.

In a half-apology, Delhi Environment Minister Manjinder Singh Sirsa acknowledged public anguish while emphasizing that no administration could eradicate pollution in 9 to 10 months. The IMD has predicted that minimum temperatures in northwest India will not change immediately over the next three days, but will gradually rise by 2-4°C, which may further affect dispersion conditions. As Delhi records an AQI of 329, authorities and residents remain on high alert, with weather conditions and policy enforcement jointly shaping the capital’s fight against persistent air pollution.

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