Pollution problems the top 10 cities pollution problems like untreated toxic industrial discharge, disease causing smog, and untreated sewage entering the food chain are just a few of the problems lying in wait for the unwary traveller. Air pollution is a growing threat and causes an estimated 33 million deaths worldwide every year a city's air pollution is measured by its air quality indexthe air quality index is used by government as means to communicate to people how polluted the air is in real-time, and its forecast. Delhi is a highly populated city in india, with approximately more than 16 million people living in 1,484 kilometers square area according to 2011 census that means the density of the population is about 11 thousand people living in each kilometer square. This site brings together and presents air pollution data for hundreds of cities across china the pollution readings are assembled in a fairly easy to read format data include the air quality index (aqi) and six individual pollutant measurements: pm 25, pm 10, ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide.
Urban air pollution is on the rise and, to little surprise, those living in some of the world's poorest cities are breathing in the worst of it. Some cities are synonymous with smog, such as beijing, in which pollution has soared to hazardous levels around 20 times the limit recommended by the world health organization. The chinese government has admitted for the first time that so called 'cancer villages' exist, as decades of pollution take their toll on the health of chinese citizens for years environmental campaigners in china have said that cancer rates in villages near factories and polluted rivers are. Smog in the chinese city of shanghai hits its highest level since january, as china repeats its promise to reduce air pollution in the run-up to the 2022 winter olympics.
To identify the 20 most polluted cities, 24/7 wall st reviewed the metropolitan statistical areas with the highest levels of ozone pollution, measured in days in a year when the concentration of. Many frequent and severe air pollution incidents have emerged across the vast parts of china recently the identification of factors and mapping social vulnerability has become extremely necessary. Khorramabad, a city in western iran, had the country's highest air pollution levels one of the most populous cities in iran, khorramabad is an agriculture hub, which likely contributes to its air pollution problems. Pollution from the traffic may put you at greater risk of harm people who work or exercise outside face increased risk from the effects of air pollution millions of people are especially vulnerable to the effects of air pollution, including infants, older adults and people with lung diseases like asthma. According to the world bank, the chinese cities with the highest levels of particulate matter in 2004 of those studied were tianjin, chongqing, and shenyang  in 2012 stricter air pollution monitoring of ozone and pm25 were ordered to be gradually implemented so that by 2015 all but the smallest cities would be included.
In many cities the levels of fine particulate matter - a key pollutant in terms of its impact on human health - are exceeding the critical limit (as defined by the who), specifically in densely populated, fast-growing and less developed countries like china, india, pakistan and bangladesh. The importance of these increased health risks is greater than in developed countries because air pollution in china is at much higher levels and because the chinese population accounts for more than one-fourth of the world's total population. Over the next ten years, china plans to spend as much as $64 trillion building cities and towns for an urban population forecasted to hit 400 million people by 2022 as if omnisciently, the ministry of environmental protection announced plans in early december to spend $56 billion by 2015 on curbing air pollution in 117 major cities across china.
Hazardous index in the winter, china's smog is especially bad in the north as cities burn coal for heat, one of the contributors to the country's pollution problem. China's pollution is causing a headache nationwide, with many rivers and lakes clogged with garbage, and heavy metals in the soil bad air sometimes causes flight delays. Air pollution has become so bad in beijing, for example, that chinese officials aim to slash its local coal consumption by 30% in 2017 meanwhile, the us — which currently ranks eighth on the.
China's state environment protection agency is responsible for measuring the level of air pollution in china as of 28 august 2008, sepa monitored daily pollution level in 86 of its major cities as of 28 august 2008, sepa monitored daily pollution level in 86 of its major cities. Roughly 92% of the world population live in areas where ambient air pollution exceeds the safe limit established by the world health organization (who) one indicator is the amount of airborne particulate matter less than 2 5 micrometers in diameter (pm25) exceeding 10 micrograms per cubic meter. Air pollution has become a major issue in china and poses a threat to chinese public health in 2016, only 84 out of 338 prefecture-level (administrative division of the people's republic of china (prc),ranking below a province and above a county) or higher cities attained the national standard for air quality. Air pollution is most common in large cities where emissions from many different sources are concentrated sometimes, mountains or tall buildings prevent air pollution from spreading out sometimes, mountains or tall buildings prevent air pollution from spreading out.