Global air quality has deteriorated due to human activity such as manufacturing, burning and transport. Poor air quality is typically linked with health affects such as lung disease and heat attacks. Read more to learn about the air quality in the major cities around the world, including India, China and the USA.
Reports of Dhaka and Bangladesh’s air pollution being the ‘worst’ in the world feature often in the news. But how much of a problem is air pollution in Bangladesh and Dhaka, really? This article provides an overview of Bangladesh’s air pollution: how bad is Bangladesh and Dhaka’s air pollution and …
On paper, China’s “war” on air pollution is still underway. But with COVID-19 disrupting the first half of 2020, has air quality really improved? Smart Air analyzed PM2.5 data for 11 of China’s major cities to get to the bottom of it. The data showed average PM2.5 reduced 9% compared …
Cases analysis data from China suggests that by far the riskiest environment for COVID-19 is where most people are right now. We probed the data on where the riskiest places are to catch COVID-19 and where should we be taking the most caution. People have jumped on practical …
The lockdown caused by the COVID-19 epidemic saw the numbers of trucks and buses on the road reduce by 77% and 36%, respectively. Hundreds of factories were also closed for an extended period of time. Despite Smart Air analysis showing an increase in PM2.5 levels during February, there have been …
Delhi often makes headlines as one of the most polluted cities in the world, but has the coronavirus lockdown starting March 25th dramatically cut pollution in the capital? News outlets have reported reductions in pollution, but reports of reductions in Beijing were later disproven by data on the ground. A …
Recent news reports have proclaimed a dramatic reduction in China’s air pollution during the coronavirus lockdown, yet data shows Beijing has actually seen pollution levels rise during this period. The headlines are based on images from NASA, finding that air pollution dropped 10-30% compared to the same period in 2019. …
After a big improvement in 2018, new data shows China’s war on air pollution is slowing down. A Smart Air analysis of 2019 PM2.5 data for China’s 15 largest cities found that more than half saw worse air quality over 2018. Maps comparing average PM2.5 in December 2018 to December 2019 …
When Delhi’s air pollution spikes, netizens in the nation’s capital often bring up the solution of planting trees. For instance, this user on the question-answer site Quora asks “how many trees does Delhi need to combat its air pollution problem?” However, environmental research suggests that planting trees are an incredibly …
Many purifier companies offer air purifier rental services as part of their business model. It sounds great: they offer to rent you an air purifier short term, and you save money in the process. This simple analysis will show why that system is flawed, and how renting air purifiers is …
