A haze visible through Southcentral Alaska on Wednesday was caused by smoke from fires burning in Siberia that began flowing into Alaska in early July.

Gallery | The forest fires have covered an area larger than Greece and are emitting black smog that harms nearby populations.

All forest fires have been extinguished in Chukotka, where thousands of hectares of natural areas have been blazing before, according to the region's Department of Natural Resources and Ecology. RIA Novosti, 20.07.2020

Photos of Yugorsk and other cities showed residential buildings fuzzy under a blanket of white smog.

Smoke from wildfires in Siberia drifted to Alaska last year as well, according to the National Weather Service, but Alaska already had hazy skies from local wildfires.

Most of the blazes are in a region that saw possibly the hottest-ever temperature above the Arctic Circle this month.

Saint Lucia’s Ministry of Health has advised citizens to take measures to protect themselves from the ill effects of Saharan dust.

Air quality sinks to hazardous levels as biggest cloud seen in a generation swamps region after transatlantic journey

The dust should suppress Atlantic hurricane activity, at least temporarily.

The yellow tinting in ocean water has been identified by the Tanana Valley Clinic as spruce pollen, but it remains to be seen why the pollen counts are so high this year.

Toxic fuel from 21,000 ton leak reaches pristine lake, bypassing floating booms, as rivers of diesel pollution cover-up is exposed.

Ocean water may be tinted yellow from pollen.

Elevated pollen levels in Anchorage and across Alaska raise questions about changes in respiratory health and the importance of having good air quality during the coronavirus pandemic.

Wildfires in Russia have burned across a combined area the size of Greece so far in 2020, surpassing official estimates threefold. Experts warn that this year’s blazes could become the most destructive in history.

Unusually high levels of seasonal pollen create a visible sheen on water.

Seeing pollen in rainwater is unusual.

Warm temperatures are causing birch buds to burst, sending large amounts of pollen in the air. In Chuathbaluk, there was so much pollen, it was visible as a tornado.

Abnormally hot May weather resembles midsummer with air temperatures as high as +35C.

After a cold winter and spring, high temperatures around the Interior prompted birch tree buds to burst, sending record-setting levels of pollen into the air.

Hunters in Pond Inlet, Nunavut, say that iron ore dust from the Mary River Mine is discolouring the land around Milne Inlet, deterring animals and making it hard to get clean water when people are camping.