Satellite image of smoke (brown) from wildfires in Quebec, Canada, over New York and Pennsylvania, USA, on 7th June 2023. A coastal low directed the smoke southwards in surface-level air causing the worst smoke-polluted air in the northeastern US states since records began in 2006. At the time hundreds of wildfires were burning across Canada after a heatwave and an abnormally dry spring. Image obtained by the Geostationary Operational Environmental Satellite 16 (GOES-16).