Karachi and Lahore Rank Among World’s Most Polluted Cities
- Fahad Bin Khalid
- October 28, 2024
- 1:08 pm
- 22
- Trending
In October 2024, Pakistan's two largest cities, Karachi and Lahore, are in the news for alarming reasons. They are among the world's most polluted cities. Karachi's AQI is 198, in second place. Lahore is third at 192. These figures are unsettling, especially with winter coming. It's a season known for increased pollution in South Asia. High pollution levels harm the health of millions in these cities. They also damage the environment.
Air Quality Index (AQI) – An Alarming Indicator
The AQI is a key tool for assessing air quality. It focuses on harmful particles, like PM2.5 and PM10, in the air. These tiny particles, especially PM2.5, are very harmful. They can enter the lungs and bloodstream, raising the risk of respiratory and heart diseases. An AQI of 151-200 is "unhealthy." Above 200 is more dangerous. It puts everyone, especially those with preexisting conditions, at greater risk.
This year, New Delhi, India, has the highest AQI of 252 among the most polluted cities. It's dangerous. As winter nears, pollution levels in South Asian cities worsen. This is due to changes in atmospheric conditions. It leads to poor air quality and health risks for millions.
The Winter Effect on Air Quality
In winter, pollution levels rise. Denser air traps pollutants, creating a harmful smog layer. This smog consists of carbon, smoke, and toxic particles. It comes mainly from factories, vehicles, and the open burning of coal, garbage, oil, and tires. Karachi has natural winds from the Arabian Sea. In winter, these winds weaken. They usually help to disperse pollutants. In Lahore, pollution accumulates due to a lack of natural dispersal. This is worse in winter's colder, denser air.
Health Risks Linked to Air Pollution
The implications of these AQI levels on public health are profound. Residents of Karachi and Lahore face a growing risk of health issues from air pollution. These include respiratory and cardiovascular problems. For vulnerable groups, like children, the elderly, and those with lung issues, the risk is even higher. Without intervention, the exposure could cause chronic diseases. It could shorten lives and reduce quality of life.
The Urgent Need for Action
To address this escalating crisis, immediate and long-term solutions are essential. Authorities must act. They should enforce stricter rules on industrial emissions. They should also improve waste management to reduce burning harmful substances. Increasing urban green spaces could help absorb pollutants. Public campaigns could encourage waste reduction and cleaner energy use. Also, upgrading public transport and promoting carpooling could reduce road traffic. This would cut emissions.
In Karachi and Lahore, winter brings more than cold weather. It reminds us of the urgent need for sustainable measures. This pollution crisis isn't just about improving AQI ratings. It's about protecting the health of millions of residents.
As winter nears, pollution in Karachi and Lahore is among the worst in the world. It poses serious health risks to their residents.
