This statistic depicts the nitrogen dioxide level in large cities in China in 2019. That year, the NO2 level in Tianjin was 42 micrograms per cubic meter.
The U.S. Environmental Protection Agency, Fused Air Quality Surface Using Downscaling (EPA FAQSD) presents modeled PM2.5 (daily average) and O3 (daily 8-hr maximum) surfaces. Predictions are generated