Air pollution is considered to be one of the largest environmental health impacts globally. Air quality can vary within city districts and even within street sections. Project Air View in Hamburg is a scientific project of Google and HafenCity University (HCU) to measure, map, and publish hyperlocal air quality data in Hamburg. Project Air View uses an all-electric vehicle equipped with air quality sensors from Aclima to measure fine particulate matter (PM 2.5), nitric oxide (NO), nitrogen dioxide (NO2), carbon monoxide (CO), carbon dioxide (CO2), and ozone (O3), which are harmful to both our climate and human health. Project Air View’s goal is to bring detailed air quality maps to the Environmental Insights Explorer, open to scientists, city planners, and everyday people to help inspire action that can help further improve the living environment. Hamburg is the first German city with a Project Air View initiative and among the first five European cities. The data collected by Project Air View is not related to the measurements and modeling carried out by the immission control authority in Hamburg (BUKEA) on the basis of the 39th BImSchV to assess air quality.