Decision by county commissioners to cut funding ends long-term data collection on methane, nitrogen oxides and VOCs at Boulder Reservoir.

Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

The next time someone admonishes you to “follow the science” in safeguarding the environment, you might tell them about the ...

A new rule adopted by the Colorado Air Quality Control Commission identified five "priority" air toxics that will soon be regulated.

As government sensors fall short, people are buying their own to protect against particulate pollution linked to heart and ...

Colorado drivers used to waiting in long lines for their required emissions tests will have a new, hopefully more convenient ...

One change that could have a big impact on how long drivers wait for an emissions test is the introduction of self-service kiosks. According to the agency, owners of gas-powered or hybrid vehicles who ...

After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free ...

But even as red flag warnings expired and heavy winds died down, another danger has remained: poor air quality across much of ...

Key Lime Air has carved out a distinct niche in the aviation industry with its specialized charter operations. Based in ...

Colorado air pollution regulators spend a lot of time thinking about greenhouse gases that create a smog across the Front Range and contribute to global warming, But this ...

The creation of the list of five toxic air contaminants is the result of a years-long effort from environmentalists and ...