Yes, the number of pollution monitoring sites in Tokyo is quite extensive. They measure PM2.5,PM10,O3,NO2,SO2,and CO. https://aqicn.org/map/tokyo/ https://aqicn

Yes, the number of pollution monitoring sites in Tokyo is quite extensive. They measure PM2.5,PM10,O3,NO2,SO2,and CO. https://aqicn.org/map/tokyo/ https://aqicn.org/map/tokyo/ This site keeps a detailed history. I've witnessed the construction in Tokyo. I'm greatly impressed by the steps they take to monitor and reduce impact. I've seen many sites with noise monitors displaying in decibels the current noise inside and outside the construction site. When a building across the street from my apartment was renovated I was sent detailed construction plans. The work was scheduled so that any noise would never interrupt sleep or evening relaxation. Also include was how the sunlight and shade from the new construction would change. Included was steps to take if one wished to protest the construction.