Denver experiences 50-degree temperature swing as wildfire smoke moves in

Increasing wildfire smoke will result in fine particulate concentrations reaching the Unhealthy for Sensitive Groups category throughout the Denver area Tuesday.

Wildfire smoke kills tens of thousands of people a year. Here's how it attacks the body

Wildfire smoke, which is increasing in the Northern Hemisphere as the climate warms, attacks nearly every system in the body.
University of California

Wildfire smoke is worse than you think

Scientists at the University of California are studying how this growing crisis affects our health — and the findings are alarming.

Here’s what is canceled in the Portland area due to wildfire smoke

As wildfire smoke pushes Portland’s air quality further and further into the unhealthy zone, outdoor summer activities are shutting down. Portland had the 10th-worst air quality of any city on Earth on Tuesday morning,

Wildfire smoke fills Mid-Willamette Valley, with Salem the worst

Oregon DEQ issued an air quality advisory Aug. 3 for the Portland metro area as wildfire smoke moves west of the Cascades.

Satellite photo shows smoke moving down California coast from Northwest wildfires

Wildfire smoke blanketed much of the West on Tuesday morning, including a dense plume that hovered over northern Oregon and the Pacific Ocean, extending just off the California coast.

The smoke is here. Here’s the air quality forecast for the rest of the week

As smoke from nearby wildfires spread across the Puget Sound region this week, agencies are urging residents to take precautions.

Tracking US wildfires and smoke in maps and charts

Deadly and destructive wildfires erupt in the US each year, burning millions of acres and destroying thousands of homes. CNN is tracking the trends.