All Regions Weather Blog Nitrogen Dioxide in the Neighborhood A team of scientists mapped nitrogen dioxide in California’s air at the neighborhood scale and found hotspots of the air pollutant near high-rise buildings and food processing facilities. Read More… About Author OTW Observer See author's posts Post navigation Previous Mayotte’s LagoonNext Nitrogen Dioxide in the Neighborhood Related Stories Exact date London set to be hotter than Greece in 36C heatwave All Regions Europe Exact date London set to be hotter than Greece in 36C heatwave July 22, 2026 A Week of Smoky Skies Across North America Weather Blog A Week of Smoky Skies Across North America July 22, 2026 NISAR’s L-Band Radar Reveals ‘Hummingbird’ in Antarctica Weather Blog NISAR’s L-Band Radar Reveals ‘Hummingbird’ in Antarctica July 22, 2026