Strong northwest winds are resuspending ash from the 1912 Novarupta-Katmai eruption, prompting an NWS Special Weather Statement for southern Kodiak Island and an aviation advisory up to 6,000 feet. Communities including Karluk, Akhiok, and Larsen Bay may see haze and trace ash; sensitive groups are advised to limit outdoor activity until winds ease Saturday.

Norton Sound Health Corporation issued an air quality alert for Nome after PM10 levels exceeded 301 (hazardous) on Oct. 23. Officials cite recent freeze–thaw cycles and dry conditions for the unusual late-October dust; residents are advised to limit outdoor exposure and use N95 masks.

Smoke from Central Washington wildfires pushed into Spokane on Thursday, raising air quality to unhealthy for sensitive groups and likely lingering into Friday. Forecasters cited the Labor Mountain and Lower Sugarloaf fires and gusty winds as primary drivers, with conditions expected to ease slightly Friday.

In September 2025, multiple wildfires were observed near E.C. Manning Provincial Park, BC, highlighting the increasing prevalence and intensity of wildfires in the region.

Environment Canada has issued a special air quality statement for much of British Columbia as wildfire smoke from B.C., Yukon and the Northwest Territories spreads over the next 24–48 hours. Officials warn of health impacts, especially for vulnerable groups, and advise reducing outdoor exertion and keeping indoor spaces cool and sealed.

British Columbia set a new national September heat record with 40.8 C in Cache Creek, as wildfire smoke triggers widespread air-quality alerts. Multiple heat warnings remain in effect across the province.

Wildfires forced closures of the Coquihalla Highway between Hope and Merritt and Highway 20 east of Bella Coola in B.C., as the Mine Creek fire grew rapidly and jumped Highway 5. Evacuation orders and alerts were issued, and air quality degraded across the province.

Wildfire smoke drove air quality in Yellowknife to high-risk levels, prompting Chief Public Health Officer Dr. Kami Kandola to issue an advisory urging residents to limit outdoor activity and take health precautions. The advisory highlights vulnerable groups and directs people to the Air Quality Health Index for up-to-date information.

Firefighters extinguished one 17 ha wildfire in Vilyuysky District over the past day, while aerial monitoring detected another 1 ha fire in Olekminsky District; four fires remain active across three districts covering 711 ha.

The plume is expected to persist in the region for at least 18 hours, according to an advisory issued Tuesday morning. 

An eruption of ash from the Klyuchevskoy volcano prompted a red aviation alert and suspended flights between Kamchatka and Chukotka on August 11, 2025.

Smoke from Canadian wildfires is expected to drift over Finland by Saturday evening, brightening sunsets but not affecting air quality, according to the Finnish Meteorological Institute.

The Wesley Ridge wildfire near Qualicum Beach on Vancouver Island has expanded to nearly 590 hectares, and smoke is expected to linger across the region through the summer.

Wildfire smoke drifting east from Saskatchewan and Manitoba prompted air quality advisories across much of the Kivalliq Region but is expected to clear by Thursday.

Russia’s Krasheninnikov volcano on Kamchatka erupted on August 3, 2025 for the first time in six centuries, following major seismic activity, sending ash up to six kilometers into the sky.

On August 2, 2025 multiple wildfires broke out in Lapland’s Ranua and Posio areas, with additional fires reported in Tervola, Sodankylä, Rovaniemi and Kolar. The largest wildfire, spanning 500 × 500 m, burned near Alavaarantie in Ranua by late afternoon.

Dense wildfire smoke has prompted air quality advisories across several Northwest Territories communities, leading to health warnings and the opening of clean-air shelters in Yellowknife and Fort Providence.

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.