Kolkata & Howrah AQI hits 'very unhealthy'; Health risks surge for vulnerable groups

Air quality in Kolkata and Howrah has deteriorated significantly, with Air Quality Index (AQI) levels ranging from 222 to 293 as of Tuesday. These levels fall into the "Very Unhealthy" and "Unhealthy" categories, highlighting a severe air pollution crisis. AQI levels in Howrah have been reported to be higher and more concerning than in Kolkata.

Data from Kolkata's seven AQI monitoring stations revealed varying levels of pollution. Two stations recorded AQI levels between 223 and 227, classified as "Very Unhealthy," a category that signals adverse health effects for everyone. The remaining five stations reported levels between 176 and 195, categorized as "Unhealthy," which poses health risks for sensitive individuals and potential health effects for the general population.

In Howrah, AQI levels exceeded Kolkata’s across multiple stations. Additionally, two stations in the region recorded AQI levels of 137, categorized as "Unhealthy for Sensitive Groups." This classification indicates a significant risk to individuals with existing respiratory and cardiovascular conditions, children, pregnant women, and elderly people.

The sharp rise in pollution levels is attributed to a combination of factors, including emissions from traffic, construction activities, industrial operations, and unfavorable weather conditions that limit pollutant dispersion. These factors have created stagnant air, trapping pollutants near the surface and worsening the situation.

Adverse effects of prolonged exposure to such AQI levels include respiratory irritation, reduced lung function, and aggravated symptoms of asthma and bronchitis. Public health measures are being recommended, such as minimizing outdoor exposure, wearing masks, and using air purifiers. Sensitive groups have been advised to stay indoors, especially during peak pollution hours.