What we measure

We use low-cost IQAir sensors to measure air quality around the cities of Aires Nuevos every hour of every day.

We use low-cost IQAir sensors to measure air quality around the cities of Aires Nuevos every hour of every day. Fine Particulate Matter (PM2.5), Coarse Particulate Matter (PM10), Carbon Dioxide (CO2), temperature, humidity, and Outdoor AQI data are all measured with these sensors. 

Why do we measure particulate matter?

Particulate matter (PM) is a major component of ambient air pollution and accounts for a substantial burden of diseases and fatality worldwide. 

This burden starts even in the womb of the mother. Maternal exposure to PM during pregnancy is particularly harmful to children’s health: they are more likely to birth prematurely, and have small, low birth-weight. Air pollution also impacts neurodevelopment and cognitive ability and can trigg er asthma, and childhood cancer. Children who have been exposed to high levels of air pollution may be at greater risk for chronic diseases such as cardiovascular disease later in life.

“The evidence is clear: air pollution has a devastating impact on children’s health.”


According to the latest WHO guidelines, annual average PM2.5 concentrations should not exceed 5 g/m3, and 24-hour average exposures should not exceed 15 g/m3 for more than 3 – 4 days per year. 

Most of the cities monitored by Aires Nuevos sensors in Latin America exceed the recent WHO guidelines, confirming that there is no safe place for children in terms of air quality.

Countries can reduce the burden of disease and long and short-term illnesses by lowering air pollution levels. Despite significant proof of the harm air pollution does to human health at even lower concentrations than previously thought, Latin American countries have very heterogeneous air quality standards to safeguard their populations.

National Ambient Air Quality Standards by Aires Nuevos´countries

While air quality standards vary considerably across the region, most countries follow the second WHO Interim Target for Particulate Matter. The guideline’s goal is for all countries to achieve recommended air quality standards, and WHO has proposed interim targets to facilitate stepwise improvement in air quality and thus gradual, but meaningful, health benefits for the population.

Why did we start measuring? (READ MORE)