Kolkata's air pollution in 2020 did not improve

Did Kolkata’s Air Quality Improve in 2020?

How was Kolkata’s air quality in 2020? Did Kolkata’s air quality improve in 2020 compared to recent years? Air pollution in 2019 averaged levels nearly 7 times the World Health Organization’s (WHO) recommended limit for PM2.5 levels. Smart Air dove into the data to see if there was any improvement … Read more

Did Delhi's Air Quality Improve In 2020?

Did Delhi’s Air Quality Improve in 2020?

How was Delhi’s air quality in 2020? Did Delhi’s air quality improve in 2020 compared to recent years? For the previous three years, Delhi has seen little improvement in air quality. Air pollution levels have hovered around 10x the World Health Organization’s (WHO) recommended limit for PM2.5 levels. Smart Air … Read more

WHOs Air Quality Guidelines Are Actually Unsafe

Here’s Why the WHO Air Quality Guidelines Are Unsafe

In 2005, the World Health Organization (WHO) released its most recent guidelines on safe air quality and pollution levels. The problem? More recent research shows these WHO air quality recommendations are actually NOT safe. What Are the WHO Recommended Safe Air Pollution Levels? The WHO gives recommendations for 5 air pollutants: PM2.5, … Read more

How far can wildfire smoke travel?

How Far Can Wildfire Smoke Travel?

Smoke from wildfires is a serious health concern. So questions often come up: How far can wildfire smoke travel? Can someone in New York be affected from the California wildfires thousands of miles away? Do Australian bushfires affect the entire country? During the ravaging California wildfires in September of 2020, … Read more

2020 India Air Pollution Report: Did Air Quality Improve?

Did India’s air quality improve in 2020? How did COVID-19 affect air quality in India? Smart Air analyzed 2020 India air pollution data for five of India’s major cities: Delhi, Mumbai, Kolkata, Chennai, and Hyderabad. 2020 India Air Quality Report Of the five major Indian cities analyzed in 2020, all … Read more

Calgary Canada one of least polluted cities in the world

25 Least Polluted Cities in the World (2020 Rankings)

Air pollution is one of the leading causes of death around the world. Therefore you may be curious: “What are the least polluted cities in the world?” Smart Air analyzed 2020 air pollution data from 540 major cities in the world to create the 2020 ranking of the “25 Least … Read more

Dhaka Bangladesh air pollution sources

Where Does Bangladesh and Dhaka’s Air Pollution Come From?

Bangladesh’s air pollution levels reached an average of 86 micrograms in 2019. That means Dhaka, Bangladesh’s pollution levels are almost 9 times the WHO safe limit. With such high pollution levels, many may wonder where Dhaka and Bangladesh’s pollution actually comes from. Learn more: Overview of Bangladesh & Dhaka Air … Read more

Bangladesh & Dhaka Air Quality – 2020 Update

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 … Read more

Xian Air Pollution

What Is The Most Polluted City in China? (2020)

Cities in China have consistently ranked among the most polluted in the world. Just how bad is it? Smart Air analyzed 2020 pollution data from 52 cities in China to find the most polluted cities in in China. Rankings: Most Polluted Cities in China (2020) 1) Anyang, Henan Province (44 … Read more

Can open window fight protect from COVID-19 coronavirus transmission

Does Opening Windows & Doors Help With COVID-19 ?

Data shows that having good indoor ventilation can reduce the chance of virus transmission. Armed with that knowledge, can something as simple as opening a door or a window help to fight COVID-19 and reduce coronavirus transmission indoors?   Recommended Air Changes Per Hour   Before we can say how … Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifier and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.