WHO Updates Air Quality Guidelines, But Are They Safe?

After over 16 years, the World Health Organization (WHO) updated its air quality guidelines, including its recommended limits for one of the world’s biggest killers, PM2.5 air pollution. The WHO lowered their annual PM2.5 limit by half, from 10 micrograms to 5 micrograms per meter cubed.  This comes to welcome … Read more

Delhi smog tower

Delhi Unveils Smog-Fighting Purifier Tower, But Does It Work?

Delhi is one of the most polluted cities in the world. PM2.5 pollution levels reach more than 10 times the World Health Organization’s annual limit. To combat air pollution, the Delhi government recently installed a new smog tower in the center of the city. But will this Delhi smog tower have an effect … Read more

The Dangers of High Carbon Dioxide (CO2) Levels

Although carbon dioxide (CO2) is a byproduct of many natural processes, high levels of CO2 can cause a variety of health effects on humans. In this article, we explain at what levels CO2 becomes dangerous and the negative health effects of these high CO2 levels. Also, how do CO2 levels … Read more

Manama Bahrain Air Pollution One of Worst in World

25 Most Polluted Cities in the World (2021 Rankings)

Air pollution is one of the leading causes of death around the world. But which cities and countries are the most polluted in the world? Smart Air analyzed 2021 air pollution data for 540 major cities from 182 countries around the world to produce the 2021 ranking of the “25 … Read more

Current Portland Air Quality (2021 Wildfire Live Readings)

Current Portland Air Quality (2021 Wildfire Live Readings) Portland air quality exceeded the WHO annual limits on nearly one-fifth of days from 2020 to 2021. Despite the low percentage, Portland’s air quality averaged over 40 times the WHO recommended limit of dangerous PM 2.5 pollutants on its worse day in … Read more

Current Seattle Air Quality (2021 Wildfire Live Readings)

Seattle air quality exceeded the WHO annual limits on about 1/6 of days from 2020 to 2021. Seattle air quality averaged nearly over 18 times the daily recommended limit of dangerous PM 2.5 pollutants on its worse day in 2020. Seattle’s air quality worsened to these dangerous levels largely due … Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifiers 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.