The sun and sky had a much more eerie appearance to it on Saturday evening and Sunday morning. It was a sign that smoke from wildfires burning more than 4,000 miles (6,400km) away in central Canada had made it across the Atlantic to sit in the skies over the UK. BBC WeatherWatchers from all corners of the country were out capturing the spectacle. …The change in the appearance of the sun and sky is due to smoke particles in the atmosphere scattering the blue wavelengths of light more, allowing predominantly orange and red hues to reach our eyes. …The presence of wildfire smoke from North America over the UK, whilst not common, does occasionally happen during the summer months. …Here in the UK, the smoke plume is at too high an altitude to affect our air quality.