Multiple wildfires across Finnish Lapland this week prompted dozens of rescue responses, with Border Guard and Defence Forces helicopters assisting amid dry conditions and an open fire ban.

The total area of active forest fires in the Sakha Republic (Yakutia) grew from 265 ha to 1,462.5 ha on July 22, with 10 fires being fought by 306 personnel and 14 units of equipment.

Authorities in Russia’s Tyva Republic declared a state of emergency after eight wildfires grew to over 324 hectares, banning public entry to forests.

Warm, dry weekend conditions in Manitoba increased wildfire behaviour across nearly all active blazes, prompting evacuations, air quality warnings and challenges for aerial suppression.

Many residents sought medical attention for respiratory discomfort and eye irritation caused by volcanic smog and air pollution lingering over Reykjavík and nearby areas.

A wildfire near Lake Spokane in southern Stevens County grew to over 2,000 acres by Sunday, prompting evacuations as thick smoke blanketed the region.

Volunteer firefighting flights in Norrbotten faced their most hectic period ever when a Sunday thunderstorm sparked multiple lightning-ignited wildfires, creating a “wall of lightning” that hindered access across Gällivare, Kiruna, Pajala and Porjus.

Lightning strikes from passing thunderclouds have ignited forest fires in several inland municipalities in Norrbotten County, Sweden, prompting rescue services to work to extinguish them.

New fissures on the Reykjanes Peninsula have sent lava eastward and prompted fresh hazard warnings, with high sulfur dioxide levels and drifting volcanic fibers adding to safety concerns.

The increase in tree "fluff" is likely a stress response from poplars, aspen and willows reacting to the dry conditions from the past few years, according to the N.W.T.'s department of Environment and Climate Change.

A forest fire near Musquodoboit Harbour on Nova Scotia’s Eastern Shore has stabilized after rainfall, allowing some evacuees to return home while others remain displaced as crews continue to monitor the 30-hectare blaze.

Smoke from Canadian wildfires is drifting into Southeast Alaska’s Chilkat Valley, prompting an air quality advisory for Haines and Skagway as hazy conditions persist.

Other new fires were reported near the Eureka Roadhouse along the Glenn Highway and near the Denali Park community. Forty new fires were reported Thursday.

Levels of fine particulate matter have risen in Reykjavík, likely due to smoke from Canadian wildfires, prompting health advisories for those with respiratory issues.

Smoke from wildfires burning in the Canadian Prairies is degrading air quality in northeastern British Columbia, prompting Environment Canada to issue special air quality statements and advise residents to limit outdoor exposure.

The fires have forced thousands of Canadians to flee their homes and sent smoke as far as Europe.

Smoke drifting into Yellowknife on May 29, 2025, mainly originated from wildfires in Alberta, with additional smoke forecast from northern British Columbia, according to FireSmoke Canada projections.

Authorities in Buryatia have declared a state of emergency as rapidly spreading wildfires, blamed on human activity, devastate the Zabaikalsky region and the Republic of Buryatia, producing heavy smoke and burning homes.

Strong winds and dry weather are fueling rapidly spreading wildfires across Russia’s Zabaikalsky region, with over 456,000 hectares burning and firefighters racing to protect populated areas.

Anchorage is experiencing the highest tree pollen counts in nearly a decade, with counts reaching thousands of grains per cubic meter from birch, poplar, cottonwood, aspen, willow, and alder, triggering widespread allergy symptoms.