The Hidden Dangers of Invisible Air Pollution

Everyone craves a refreshing breath of clean air. Sadly, the air we breathe is often anything but fresh, especially in the world’s most polluted cities.

The Problem Goes Beyond Smog

For millions living in cities like New Delhi, Dhaka, Bangkok, and Jakarta, smog can seem inescapable. However, according to Tanushree Ganguly from the Energy Policy Institute of Chicago in India, just because the sky is blue, doesn’t mean the air is clean.

“Blue skies can’t guarantee you clean air,” she warns.

Where Does Air Pollution Come From?

Air pollution stems from various sources. The primary culprits are the combustion of fuels such as coal, natural gas, diesel, and gasoline. This includes industrial boilers and the vehicles that power our daily lives. Additionally, the burning of crops, trees, and agricultural waste can release harmful pollutants into the air during wildfires and agricultural seasons.

The Hidden Threats of Invisible Pollutants

Hidden dangers include gases like nitrogen dioxide and sulfur dioxide, which are byproducts of fuel combustion. These pollutants are hazardous to human health and contribute to global death rates, with air pollution being the second-largest risk factor after high blood pressure.

“Short-term exposure can trigger asthma attacks and increase the risk of heart attacks and strokes, especially in the elderly or those with pre-existing conditions,” Anumita Roychowdhury, an expert from the Center for Science and Environment in New Delhi, explains.

Chronic exposure to such pollutants can lead to serious long-term health issues, including heart disease, chronic obstructive pulmonary disease (COPD), and lung infections, all of which can be fatal.

Children Bear the Brunt of Air Pollution

A UNICEF analysis revealed that more than 500 million children in East Asia and the Pacific breathe unhealthy air. This pollution is linked to the deaths of 100 children under five every day. June Kunugi, UNICEF Regional Director for East Asia, emphasizes the profound impact of polluted air on children. “Every breath matters, but for too many children, every breath can bring harm,” she said.

Understanding Air Quality Index (AQI)

Over 6,000 cities worldwide now monitor air quality, often providing this information through weather apps. However, interpreting these numbers can be confusing. To simplify this, many countries use an Air Quality Index or AQI. It’s a numerical scale where higher numbers indicate worse air quality, often with color-coded indicators showing clean or polluted air.

Despite these measures, different countries set varying standards, leading to inconsistencies. For example, India’s daily PM 2.5 limit is more than 1.5 times higher than Thailand’s and four times higher than the World Health Organization (WHO) standards.

Protecting Yourself from Air Pollution

The best defense is to limit exposure during times of high pollution. This means staying indoors or wearing a mask outdoors. However, this isn’t always feasible, especially for those who must work or live outside.Danny Djarum, an air quality researcher from the World Resources Institute, notes, “They can’t really afford not going out.”

Personal Strategies for Protection

Residents of heavily polluted cities like Bangkok often take precautions. Pakaphol Asavakomolnant, an office worker, wears a mask daily and avoids using motorbikes. “I get a sore throat in the mornings, and I forget to wear my mask,” he shares.

The Importance of Indoor Air Quality

It’s not just outdoor air that poses a threat. Indoor spaces can also have poor air quality due to common activities like cooking or burning incense sticks. Air purifiers can help mitigate indoor pollution, but they are often expensive and ineffective in large open areas.

Rajasekhar Balasubramanian from the National University of Singapore explains, “If we have a tiny air purifier in a large room, it won’t be effective.” Furthermore, air purifiers are not feasible for most people in developing countries.

“The majority of people affected by air pollution can’t really afford air purifiers,” WRI’s Djarum notes.

What Can You Do?

While air pollution is a global issue, taking small steps can make a difference in reducing your exposure and helping others. Inform yourself about local air quality conditions through official sources or apps, limit outdoor activities during high-pollution times, and consider indoor air purification solutions if feasible.

Supporting policies and initiatives that aim to reduce air pollution can also have a significant impact on both local and global air quality.

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