Patna has been confirmed as the second-most polluted city in India, following Delhi, during the 2024-25 period, with persistently high PM2.5 levels. This alarming trend highlights the ongoing environmental crisis affecting the Indo-Gangetic Plain.

According to a recent study by Climate Trends, Delhi recorded the highest annual PM2.5 levels and extended periods of ‘severe’ air quality, leading to Stage III restrictions for 53 days and Stage IV measures for 15 days. Patna’s situation is similarly dire, with atmospheric stagnation contributing to its pollution crisis.

Meteorological conditions play a significant role in exacerbating air quality issues. Research indicates that these conditions can shift PM2.5 levels by up to 40%, even without changes in emissions. In both Delhi and Patna, over 70% of days fall under low-wind, high-humidity meteorological regimes, which are conducive to high pollution levels.

Low wind speeds and high humidity are key factors that intensify PM2.5 concentrations during the winter months. The Indo-Gangetic Plain, where both cities are located, is particularly vulnerable due to its geography and seasonal weather patterns.

“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, driven by local emissions and regional factors,” stated Climate Trends. This statement underscores the gravity of the situation not only in Delhi but also in Patna.

As Patna grapples with its air quality challenges, observers are concerned about the long-term health implications for residents. The persistent high PM2.5 levels indicate an intensifying crisis in the eastern Indo-Gangetic Plain, which requires urgent attention and action.

Details remain unconfirmed regarding specific measures that may be implemented to address the pollution crisis in Patna. However, the need for effective strategies to combat air quality issues is increasingly urgent.

In summary, the weather in Patna is not just a matter of climate; it is deeply intertwined with the air pollution crisis that poses significant health risks to its residents. The situation calls for immediate and sustained efforts to improve air quality and protect public health.

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The recent air quality index (AQI) readings in Bihar raise a pressing question: how polluted is the air in this region compared to other cities? The answer reveals concerning levels of pollution, particularly in Saharsa and Patna.

Saharsa reported the highest pollution level in Bihar with an AQI of 219, categorizing it as poor. Patna followed closely, recording an AQI of 215 around Gandhi Maidan and 209 in the Planetarium area. Overall, Patna’s average AQI stood at 168, indicating moderately polluted conditions.

In contrast, Munger recorded the cleanest air in Bihar with an AQI of 46, falling within the good category. This stark difference highlights the variability of air quality within the state.

Comparison with Other Cities

When compared to other major cities, Delhi’s air quality was recorded as poor with an AQI of 236 on Monday morning. This places Delhi in a worse position than both Saharsa and Patna. Meanwhile, Tehran’s air quality remained significantly better, with AQI levels between 33 and 42.

Additionally, Bengaluru reported an AQI of 142, indicating a moderately polluted status. These comparisons underscore the challenges faced by various urban areas in managing air quality.

Factors Contributing to Pollution

The rise in pollution levels in Bihar is linked to changing weather conditions, including partial cloud cover and reduced wind speeds. Furthermore, ongoing construction activities in several cities have added to the pollution burden, exacerbating the already poor air quality.

AQI levels are categorized as follows: 0–50 good, 51–100 satisfactory, 101–200 moderately polluted, 201–300 poor, 301–400 very poor, and above 401 severe. The current readings in Bihar indicate a pressing need for measures to improve air quality.

As the situation evolves, it remains crucial for residents to stay informed about air quality levels and potential health impacts. Details remain unconfirmed regarding future measures to address these pollution levels.

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