Toward a Cleaner Sky: The Technology That Can Improve Air Quality STORY INLINE POST The problem of air pollution is increasingly worrying in Mexico, mainly in Mexico City and its metropolitan area, as well as in other large cities in the country, such as Monterrey and Guadalajara, and even in Puebla, Leon, and the Bajío area in general, where the combination of industry, traffic, fires and grassland fires (during certain periods) complicates the situation each year. This leads to an increase in environmental contingencies, both in number and duration. In Mexico City, from having a single contingency during all of 2020 (thanks, in large part, to the confinement caused by COVID), we went on to add six contingencies in 2021; three each year between 2022 and 2023, and 12 in 2024, which meant an increase of 500% year-on-year. How is 2026 going? In the first 77 days of the year, according to data from the Environmental Commission of the Megalopolis (CAMe),[1] Mexico City and the State of Mexico have accumulated five environmental contingencies, which added up to 10 days under restriction measures ,such as the well-known Double Hoy No Circula (doubling what was recorded in the same period of 2025, according to press [2]reports). In a simple random exercise, on the day I wrote the introduction for this article (March 17), the Directorate of Atmospheric Monitoring[3] reported that the air quality in Mexico City due to ozone was bad, and the level of risk, high. As we already know, air pollution wreaks havoc on people's health, both in the short and long term, including the likelihood of developing chronic respiratory diseases, among many others, but it can also have a negative impact on the health of businesses and the country's economy, as restrictions on mobility generate interruptions in supply chains,