Patna has been confirmed as the second-most polluted city in India, following Delhi, during the 2024-25 period. The city has recorded persistently high PM2.5 concentrations, driven by strong atmospheric stagnation and adverse meteorological conditions.

According to a recent study by Climate Trends, Delhi continues to face the most severe pollution crisis nationally, with the highest annual average PM2.5 levels and extended periods of ‘severe’ air quality. In contrast, Patna’s situation highlights an intensifying crisis in the eastern Indo-Gangetic Plain.

Over 70% of days in both Delhi and Patna fall under low-wind, high-humidity meteorological regimes, which significantly contribute to the poor air quality. Meteorological conditions can shift PM2.5 levels by up to 40%, even without any change in emissions, underscoring the impact of local weather on pollution levels.

Key factors such as low wind speed, high humidity, and atmospheric stagnation have been identified as crucial in intensifying PM2.5 levels during the winter months. This seasonal pattern poses a significant health risk to residents.

During the winter of 2024-25, Delhi implemented Stage III restrictions for about 53 days when air quality reached the ‘severe’ category, and Stage IV measures lasted for around 15 days during severe air quality episodes. These measures reflect the urgent need for action in both cities.

The Indo-Gangetic Plain, where both cities are located, is particularly vulnerable to high pollution levels due to its geography and seasonal weather patterns. This region has been consistently recording some of the highest PM2.5 pollution levels in India.

As the situation evolves, observers are closely monitoring the air quality trends in Patna and Delhi, with expectations for further studies to confirm the ongoing environmental challenges. Details remain unconfirmed regarding any immediate policy changes or interventions aimed at improving air quality.

The post Weather Patna: Air Quality Update appeared first on berightnews.

Recent data indicates that the Air Quality Index (AQI) in Bihar has reached alarming levels, particularly in Saharsa, which reported an AQI of 219, categorizing it as poor. This raises concerns about the health implications for residents in the area.

Patna, the state capital, also recorded high pollution levels, with an AQI of 215 around Gandhi Maidan and 209 in the Planetarium area. The overall average AQI for Patna stood at 168, indicating moderately polluted conditions.

In contrast, Munger reported the cleanest air in Bihar, with an AQI of just 46, which falls within the good category. This stark difference highlights the varying air quality across the state.

When comparing Bihar’s air quality 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 similar predicament as Bihar, where pollution levels are also a pressing concern.

Internationally, Tehran’s air quality remains relatively better, with AQI levels ranging between 33 and 42. Bengaluru’s AQI was recorded at 142, indicating moderate pollution but still better than many Indian cities.

The rise in pollution levels in Bihar is attributed to changing weather conditions, including partial cloud cover and reduced wind speeds, which have exacerbated the situation. Additionally, ongoing construction activities in several cities have contributed to the pollution burden.

AQI levels are categorized as follows: 0–50 is considered good, 51–100 satisfactory, 101–200 moderately polluted, 201–300 poor, 301–400 very poor, and above 401 severe. The current figures in Bihar and Delhi highlight the urgent need for measures to improve air quality.

As the situation develops, it remains crucial for local authorities and residents to monitor air quality and take necessary precautions. Details remain unconfirmed regarding any immediate actions being taken to address these pollution levels.

The post Aqi: Current Levels in Bihar and Other Cities appeared first on berightnews.