There are [1] but the bigger issue is that where NO2 is high, other toxins are also often high. You just can't measure them from space. Benzine is just one exa

There are [1] but the bigger issue is that where NO2 is high, other toxins are also often high. You just can't measure them from space. Benzine is just one example of a carcinogen that can be higher in these areas. The data would need to be overlaid with ground sample data in the red zones. [1] - https://www.airnow.gov/sites/default/files/2018-06/no2.pdf https://www.airnow.gov/sites/default/files/2018-06/no2.pdf