Dome Fire in Yosemite and the Growing Reach of Urban Smoke — September 18, 2026

A backcountry fire in Yosemite is the day's main wildfire story, and it is producing visible smoke along one of the park's main roads. The rest of today's roundup looks at the bigger picture: what happens when fires burn homes instead of forests, how one candidate wants California to prepare, and a reminder that the air inside your kitchen counts too.

Dome Fire passes 1,100 acres in Yosemite's backcountry

The Dome Fire, which started September 15 about a quarter mile north of Chilnualna Falls, had burned more than 1,170 acres and was 10% contained as of Thursday, FOX Weather reports. The National Park Service says the fire is spreading at a moderate rate to the north and northeast, moving uphill with the terrain and wind through grass, brush and timber.

Smoke is visible along Wawona Road (Highway 41). The park remains open, but the Chilnualna Falls Trail and the trails from the top of the falls toward Buena Vista and Crescent lakes are closed, along with an area east of Wawona Road from Wawona to Chinquapin. Officials said air quality in Wawona and Yosemite Valley remained in the good to moderate range, and there are no evacuation orders. If you are heading to the south end of the park, check current conditions before you go.

Why smoke from fires in neighborhoods is a different problem

Wildfires are increasingly burning through built-up areas rather than remote forest, and that changes what is in the smoke, Vox writes. The piece points to fires in Spokane, Washington this summer that destroyed more than 800 homes, the Hawk Fire near Reno that burned more than 15,000 acres and destroyed 47 homes, and last year's Los Angeles fires that burned more than 37,000 acres and displaced 205,000 people.

When homes and cars burn alongside vegetation, the smoke carries burning metals and other substances that release toxic chemicals on top of the fine particles (PM2.5) that any fire produces. Vox notes that more than 46 million homes in the continental US, roughly a third of all homes, sit on the edge of fire-prone wildland, so more people are being exposed to that smoke than in the past. On heavy smoke days, keeping windows closed and running a filter indoors is a sensible general precaution.

A wildfire-preparedness plan from a California governor candidate

Xavier Becerra, a candidate for California governor, announced a wildfire-preparedness plan after a roundtable in Altadena with community leaders, firefighters and survivors of the Eaton fire, the Orange County Register reports. The plan calls for state grants to help low-income residents harden their homes, a first statewide plan to map community wildfire risk, and support for local governments writing mitigation plans.

Becerra also wants a uniform statewide emergency alert protocol, with trained staff on call around the clock, alerts sent within minutes of a decision, pre-written templates in multiple languages, and a debriefing after each incident. The Register notes that during last year's Eaton fire, nearly all of the people who died lived in west Altadena, where evacuation alerts arrived hours after the fire started.

Your stove is part of your air quality, too

Outdoor smoke gets the headlines, but the air in your kitchen matters as well. CNET compares gas, standard electric and induction ranges on cost, speed, cooking performance and air quality, with input from a culinary instructor and a physician.

CNET points to a small study published earlier this summer in which participants with asthma reported health improvements after switching from a gas to an electric stove. The article also notes that about 68% of US households already use electric ovens, and that operating costs vary widely depending on local electricity and natural gas prices. Whatever you cook on, running the range hood or opening a window while cooking is an easy habit.

Sources

• Dome Fire grows to hundreds of acres as Yosemite closes trails to visitors — FOX Weather
• The wildfire danger we're only just beginning to understand — Vox
• Xavier Becerra, candidate for California governor, outlines wildfire preparedness plan — Orange County Register
• What to Know Before Buying a Gas, Electric or Induction Range — CNET

Canairy aggregates publicly reported air-quality and wildfire news and summarizes it in plain English, with links to the original sources. This is educational information, not medical or emergency advice. In a wildfire or air-quality emergency, follow guidance from local authorities.