This is an image from MODIS showing aerosol optical depth over Europe on 16th October 2017. The areas in red have high aerosol optical depths.

This photo was taken on the 16th October 2017 in Reading, UK and it shows the sky looking like a orange haze with a red sun, which was caused by Saharan dust and smoke from Spanish and Portuguese wildfires.

https://atmosphere.copernicus.eu

This image shows data from GOME-2 aboard Metop-A/B showing large amounts of dust aerosol’s being transported from the Sahara to Greece, Turkey and all the way to Bulgaria.

Tropospheric NO2 pollution In Los Angeles on 26th November 2017 measured by GOME-2. The main sources of tropospheric NO2 are industry and traffic.

Tropospheric NO2 pollution In Los Angeles on 6th December 2017 measured by GOME-2. The enhancement of levels compared to the 26th November is due to wild fires.

A burst of BrO was observed by GOME-2 over Hudson Bay sea ice in late January 2018.

CAMS global forecast of aerosol optical depth for 2nd March 2018

https://atmosphere.copernicus.eu

Aerosol optical death in Europe on the 17th October 2017, when dust from Portuguese wildfires and Saharan sandstorms turn the Sky yellow in the UK.

http://www.copernicus.eu