High air pollution alerts have been issued for Bergen, Trondheim, and Stavanger due to increased levels of particulate matter, posing health risks especially to vulnerable groups.

Milton grew quickly into a Category 5 storm Monday morning and is forecast to make landfall in Florida midweek.

The smoke particles have already reached high into the atmosphere, so they won't cause health problems or unusual odours. The most colourful sunset is expected on Tuesday evening.

The isotope measured in air in Tromsø for now is unknown. The isotope comes from a nuclear reactor, and is used in medial diagnostic.

A fire destroyed a Peter Pan Seafoods facility in Sand Point, Alaska, causing a pervasive smell of burning plastic from fishing gear stored on-site.

Authorities say at least seven people have been killed after a “superfog” of smoke from south Louisiana marsh fires and dense fog caused multiple massive car crashes involving 158 vehicles.

The smoke is from numerous wildfires burning in Canada’s Yukon Territory.

Grieving parents who lost their nine-year-old boy last week say their son died after a severe asthma attack made worse by wildfire smoke engulfing parts of British Columbia.

Air quality in parts of Trinidad are being impacted by Sahara Dust and causing respiratory symptoms for residents.

Smoke from Canadian wildfires will make breathing outdoors difficult today for millions of people across the six largest provinces and into the United States.

Air quality in Calgary remains poor as wildfire smoke blankets the city. The situation is expected to last through the long weekend.

Kotzebue experienced one blizzard after another in March, and now with so much piled up and drifted snow, the community is struggling to dig out.

Kirkenes had a record warm moon and Kongsberg has had more than twice as much accumulation as they usually do in January.

Officials say a wildfire in Southwest Washington that ballooned Sunday, causing regional air quality issues, may have been started by a firework or firearm.