Weather Patna: Air Pollution Update
Patna has been confirmed as the second-most polluted city in India during the 2024-25 period, following Delhi, which recorded the highest annual PM2.5 levels. The alarming air quality in Patna is largely attributed to persistent atmospheric stagnation and specific meteorological conditions.
According to a study by Climate Trends, Delhi continues to face the most severe pollution crisis nationally, with the highest annual average PM2.5 levels and the longest stretches of ‘severe’ or ’emergency’ category air days. In Patna, the situation is similarly dire, with high PM2.5 concentrations driven by strong atmospheric stagnation.
Weather patterns play a crucial role in influencing air quality. Meteorological conditions can shift PM2.5 levels by up to 40%, even without any change in emissions. Low wind speeds, high humidity, and atmospheric stagnation are key factors that intensify PM2.5 levels, particularly in winter.
Over 70% of days in both Delhi and Patna fall under low-wind, high-humidity meteorological regimes, which exacerbate pollution levels. The Indo-Gangetic Plain, where both cities are located, is particularly vulnerable to high pollution levels due to its geography and seasonal weather patterns.
During the winter months, Delhi implemented Stage III restrictions for about 53 days when air quality reached the ‘severe’ category, with Stage IV measures lasting around 15 days during extreme episodes. These measures highlight the urgent need for effective pollution control strategies in both cities.
As the air quality crisis intensifies, observers are concerned about the long-term health impacts on residents in Patna and Delhi. The persistent high levels of PM2.5 pose significant health risks, particularly for vulnerable populations.
Details remain unconfirmed regarding specific measures that may be implemented in Patna to combat this escalating pollution crisis. However, the need for immediate action is clear as both cities grapple with the consequences of poor air quality.
