Air Quality & Wildfire News — July 3, 2026

Heading into the holiday weekend, the Aspen Acres Fire in southern Colorado has become the nation's top wildfire priority, smoke from Canadian fires is hazing over Maine, and air-quality experts are reminding everyone that fireworks add their own pollution to skies already thick with smoke.

Aspen Acres Fire doubles to more than 50,000 acres

Colorado's Aspen Acres Fire, burning across Pueblo and Custer counties, has nearly doubled in size to more than 50,000 acres with 0 percent containment, Newsweek reports. Governor Jared Polis said the fire has forced more than 4,000 evacuations, with hot temperatures, strong winds, and record-dry vegetation driving its rapid growth. Mandatory evacuations cover communities including Wetmore, Beulah, Rye, and San Isabel.

Overnight, authorities added a new evacuation zone on the fire's east side, between Interstate 25 and the Colorado City area, according to KRDO. A Red Cross shelter at the Pueblo County recreation center says it has enough beds, food, and space for pets to handle more arrivals.

Across the West, repeat evacuations are wearing on people

More than 9,000 personnel are working to contain over 50 large fires around the country, and evacuations have been ordered in Arizona, Washington, New Mexico, Colorado, and Utah, SFGATE reports. One Utah resident described evacuating from the Iron Fire, returning home after five days, then being evacuated again about 24 hours later. A fire scientist at the University of Colorado, Boulder says conditions are set up for extreme fire behavior, fueled by months of dry weather and a record lack of snow last winter in some places.

Wildfire smoke and a heat advisory settle over Maine

Smoke from ongoing Canadian wildfires has drifted over Maine, and an air quality warning has been issued for the entire state, the Bangor Daily News reports. It comes alongside a heat advisory, with heat index values across central and eastern Maine expected to reach 95 to 100 degrees. The haze isn't heavy enough to bother most people, but older adults, people with asthma, and others sensitive to pollution will likely notice some discomfort.

Fireworks will add to Colorado's already smoky air

When fireworks go up this weekend, they'll add fine particles, gases, and heavy metals to Colorado skies already fouled by wildfire smoke, the Denver Post reports. The American Lung Association warns the pollution can worsen symptoms for people with asthma or COPD. Some Colorado communities, including Colorado Springs, Pueblo, and Highlands Ranch, have canceled fireworks shows over fire risk, and Denver has switched to drone shows. If smoke or fireworks haze gets thick where you are, it's a reasonable night to watch from indoors with the windows closed.

A popular Southern California trail closes to prevent fireworks fires

The North Etiwanda Preserve in Rancho Cucamonga will be closed through the holiday weekend to keep illegal fireworks from sparking a wildfire, CBS News reports. Fire officials said crews have responded to multiple fireworks incidents in the area over the past month, and anyone caught in the preserve during the closure could face a $1,000 fine.

New Mexico senators oppose air permit for a large data center project

Four New Mexico state senators rallied in Las Cruces to announce a public listening session on Project Jupiter, a planned Oracle/OpenAI data center complex in Santa Teresa, and called for denial of its requested air quality permit, the Albuquerque Journal reports. The lawmakers said residents haven't gotten reliable answers about the project's environmental impacts; the senators plan to hold their own listening session in August.

Sources

Satellite Images Show Colorado Aspen Acres Wildfire, People To Stay Inside — Newsweek
More evacuees arrive at Pueblo County shelter as authorities announce new evacuations in the Aspen Acres wildfire — KRDO
Wildfire anxiety mounts amid fast-moving blazes and repeat evacuations — SFGATE
Wildfire smoke and high temperatures settle over Maine today — Bangor Daily News
Fourth of July fireworks will pollute Colorado's smoke-filled air — The Denver Post
North Etiwanda Preserve closed for Fourth of July weekend — CBS News
NM senators announce Project Jupiter community meeting, oppose air permits — Albuquerque Journal

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.