Learn More

MEDIA  

Healthy Air

In 2016, Denver’s metro area was ranked as the eighth most ozone-polluted urban area in the United States by the American Lung Association. Pollutants can cause a myriad of detrimental health effects—exacerbating asthma, decreasing lung function, and even increasing risk of cardiovascular conditions, such as stroke. 

Ground ozone, or the pollutants and chemicals near us that are heated in the sunlight, reaches the highest levels when temperatures are in the low-90s—something that has become even more frequent in recent years. Ozone is a lung irritant, which causes breathing problems particularly for more vulnerable groups, such as the young and elderly. More than 3.5 million Coloradans live in the 11 counties which experience one or more unhealthy ground-level ozone day per year.

Air quality is further impacted by our more frequent wildfires, which have happened more often as drought becomes more prevalent. On state and private lands in Colorado, the average annual land burned from wildfires increased more than tenfold from the 1960s to the 2010s. Smoke particles in the air can increase risk for lung cancer, cardiovascular disease, asthma and COPD, and have been linked to preterm births, developmental delays in children, type 2 diabetes, and dementia.

Healthy Water

As snowmelt drains earlier from our mountains due to higher temperatures, less water is available later in the year for agricultural purposes and recreational uses. In the Western United States, our higher temperatures increase the severity of droughts, which reduce water availability and dry out vegetation. Drought can affect our health by limiting access to clean water and imposing economic hardships on agricultural workers in water-dependent industries and their communities. 

Higher temperatures can also speed algal growth in our water, and promote toxic species of algal over non-toxic ones. Harmful algal can cause symptoms ranging from skin irritation, diarrhea, and vomiting to liver or kidney damage. With our current levels of pollution, Colorado could see an average of about six more days each year with harmful algal blooms by 2050.

Even more, climate change does not only make drought more likely, but also increases the likelihood of extreme and erratic rainfall. In 2013, Colorado experienced one of the worst instances of flooding that it had in decades, producing flood conditions that killed eight people and led to more than $2 billion in damages. By scientific estimates, climate change increased the amount of rainfall during that flood period by 30 percent, and by 2080, the amount of rain falling during extreme 24-hour events could increase 15 to 20 percent across our state.

Healthy Colorado

Heat is one of the biggest climate-related dangers to health, according to the Center for Disease Control. Colorado’s average temperature has increased by two degrees in the past 30 years, and projections say the state’s average temperature could be five degrees higher by 2050. 

When vulnerable populations are exposed to higher temperatures, instances of respiratory and cardiovascular issues increase, as well as hospital admissions for heat-related illnesses. Our warmer summers also put more people at risk for dehydration and heat stroke. 

The seven percent of Colorado’s adults with diabetes can have trouble regulating their body temperature in warmer weather, and heat also affects how their bodies process insulin, requiring more frequent blood sugar tests. Seniors, in particular, are vulnerable, as age can hinder one’s ability to regulate temperature. But most of all, warmer summers impact people on socioeconomic lines, hurting the Coloradans who have jobs where they must work outside or who cannot afford air conditioning to keep their homes cool, and affecting those with the resources to stay out of the heat less.

List of Services

WHAT'S AT STAKE

Devastating out of control wildfires, insects devouring our forests, drought, and a shrinking Rocky Mountain snowpack. Climate change is already affecting the state we love. And now, it is also threatening our health.

Our work is for the state we love, and the health we deserve.

Healthy Air

In 2019, Denver-Aurora was ranked as the 12th, and Fort Collins as the 24th, most ozone-polluted urban areas in the United States by the American Lung Association. Pollutants can cause a myriad of detrimental health effects—exacerbating asthma, decreasing lung function, and even increasing risk of cardiovascular conditions, such as stroke.


Ground ozone, or the pollutants and chemicals near us that are heated in the sunlight, reaches the highest levels when temperatures are in the low-90s—something that has become even more frequent in recent years. Ozone is a lung irritant, which causes breathing problems particularly for more vulnerable groups, such as the young and elderly. More than 3.5 million Coloradans live in the 11 counties which experience one or more unhealthy ground-level ozone days per year.


Air quality is further impacted by our more frequent wildfires, which have happened more often as drought becomes more prevalent. On state and private lands in Colorado, the average annual land burned from wildfires increased more than tenfold from the 1960s to the 2010s. Smoke particles in the air can increase risk for lung cancer, cardiovascular disease, asthma and COPD, and have been linked to preterm births, developmental delays in children, type 2 diabetes, and dementia.

Healthy Water

In the Western United States, our higher temperatures increase the severity of droughts, which reduce water availability and dry out vegetation. Drought can affect our health by limiting access to clean water and imposing economic hardships on agricultural workers in water-dependent industries and their communities


Higher temperatures can also speed algal growth in our water, and promote toxic species of algal over non-toxic ones. Harmful algal can cause symptoms ranging from skin irritation, diarrhea, and vomiting to liver or kidney damage. With our current levels of pollution, Colorado could see an average of about six more days each year with harmful algal blooms by 2050.


Even more, climate change does not only make drought more likely, but also increases the likelihood of extreme and erratic rainfall. In 2013, Colorado experienced one of the worst instances of flooding that it had seen in decades, producing flood conditions that killed eight people and led to more than $2 billion in damages. By scientific estimates, climate change increased the amount of rainfall during that flood period by 30 percent, and by 2080, the amount of rain falling during extreme 24-hour events could increase 15 to 20 percent across our state.

Healthy Colorado

Heat is one of the biggest climate-related dangers to health, according to the Center for Disease Control. Colorado's average temperature has increased by two degrees in the past 30 years, and projections say the state's average temperature could be five degrees higher by 2050.


When vulnerable populations are exposed to higher temperatures, instances of respiratory and cardiovascular issues increase, as well as hospital admissions for heat-related illnesses. Our warmer summers also put more people at risk for dehydration and heat stroke.


The seven percent of Colorado adults living with diabetes can have trouble regulating their body temperature in warmer weather, and heat also affects how their bodies process insulin, requiring more frequent blood sugar tests. Seniors, in particular, are vulnerable, as age can hinder one's ability to regulate temperature. But most of all, warmer summers impact people on socioeconomic lines, hurting the Coloradans who have jobs where they must work outside or who cannot afford air conditioning to keep their homes cool, and affecting those with the resources to stay out of the heat less.

The 416 fire of 2018 was the sixth-largest wildfire Colorado’s history. 
As our climate warms, more frequent forest fires mean more smoke, dust, pollutants and other serious health hazards. They can exacerbate asthma, respiratory illnesses and increase the risk of lung cancer, cardiovascular disease, asthma and COPD. We need to act now to combat Colorado’s changing climate.

MORE RESOURCES

LEARN MORE

Ready to Get Involved?

Add your name to a petition or send a letter to your legislator to let them know where you stand.
Take Action Now

LEARN MORE FROM EXPERTS

Healthy Air & Water Colorado Blog

By HAWC Colorado March 3, 2025
Hello HAWC Advocates and Friends! As I begin my third week as the new executive director of Healthy Air and Water Colorado, I wanted to send this brief note to introduce myself and express my gratitude to all of you in HAWC’s network of climate advocates and health professionals. My first few days have been filled with listening, learning, and getting to know many of you, your interests, and the incredible work you do to address climate change in order to protect public health. I join HAWC after more than 20 years in federal and state public policy working on natural resource issues, land use, sustainability, and in collaboration with local communities to ensure equitable access to clean and healthy air and water in Colorado, and across the country. Throughout my work, one thing has always been true, and that is the tremendous power of passionate individuals who come together, a coalition united by a common cause seeking real and lasting change. The HAWC network and our partners in climate advocacy are the coalition that is needed now more than ever to take action and advocate for policies that address the health impacts of worsening air quality, extreme temperatures, and threats to water availability and quality. I am thankful to each of you for the work you do every day at the crossroads of public health and climate policy, and for the time, energy, and enthusiasm you contribute. We are planning some in-person events and advocacy trainings so we have an opportunity to connect with you all and energize our work going forward. Stay tuned for more. I look forward to joining you in the work ahead! With gratitude, Alex Boian Executive Director Healthy Air and Water Colorado
By HAWC Colorado February 26, 2025
Colorado air quality leaders vote in favor of cutting oil & gas emissions
By Megan Kemp - HAWC Advocacy Manager November 17, 2022
Health professionals across Colorado see it daily: our poor air quality is having debilitating and sometimes deadly impacts on our communities. While they understand it in the aggregate, they are experiencing it one patient at a time. Kids with higher rates of asthma. Adults who are forced to stay indoors during the summer heat or wildfire season because underlying conditions make it impossible for them to breathe. People who can no longer effectively manage their diabetes due to rising temperatures. More babies born prematurely or at low birth weights. The reality is that the impacts of climate change aren’t just showing up in large scale changes in the frequency and severity of storms and the creeping changes to our seasonal weather patterns, the impacts of climate change are literally written on our bodies. For historically red-lined communities that have ended up along neighborhood destroying highways, these impacts increase exponentially. A major driver of this climate change and the concentric circles of public health distress is transportation, the cars we drive and the trucks that transport our goods and services. If we can bend the curve on transportation, we can make a significant difference in the quality of our air and the ground level ozone that debilitates so many and adds to the real challenges to our public health. Pollution from transportation typically comes in two forms and impacts public health in different ways. Particulate pollution from vehicle tailpipes can result in premature death in people with heart or lung disease, heart attacks and irregular heartbeat, aggravated asthma and other respiratory symptoms, such as irritation of the airways, coughing or difficulty breathing. These challenges can be particularly pronounced in the very young and the very old.
October 27, 2022
FOR IMMEDIATE RELEASE Oct. 27, 2022 Contact: Michele Ames 303-817-5510 Healthy Air & Water Colorado advocates press for federal action on climate change Listening session with Congressman Jason Crow focuses on high-impact policy change (DENVER, Oct. 27, 2022) – Health expert advocates on the University of Colorado Anschutz Medical Campus discussed their concerns about the worsening public health crisis driven by climate change with U.S. Congressman Jason Crow on Wednesday. The event was hosted by Healthy Air & Water Colorado and the University of Colorado School of Medicine and University of Colorado Climate & Health Program. Healthy Air & Water Colorado, a sister organization of Healthier Colorado, the state’s leading health advocacy organization with over 100,000 members, helps health professionals from across the state speak out on policies that will help to curb the acceleration of climate change and reduce its current impacts on human health. Advocates working with the organization addressed policy they would like the federal government to pursue to help bend the curve on the worst health impacts of climate change. "When I think about what climate change is, it’s a child health issue. It’s not just about the polar bears, it’s about the health of our children,” said Dr. Bhargavi Chekuri, Assistant Professor of Family Medicine and Director of Continuing Medical Education at the University of Colorado School of Medicine. Chekuri and other health experts shared their experience in dealing with climate related health impacts with the congressman. The clinical and scientific data has confirmed increases in various climate-related diseases including increases in childhood asthma rates, increases in chronic lung ailments, growing difficulty managing chronic issues like diabetes, increasing rates of preterm births and decreasing birth weights, to name a few. In addition, medical professionals are also dealing with the immediate, catastrophic impacts of the increasing severity of storms and the growing frequency and veracity of wild fires across western states. Among other policy priorities at the federal level aimed at combatting these health impacts, Healthy Air & Water Colorado advocates have been pressing for ongoing investments in the country’s green energy infrastructure, transportation alternatives to help reduce fossil fuel emissions from cars and trucks, a leading cause of greenhouse gas and federal adoption of Colorado’s methane emission standards, which are the toughest in the nation. “When individuals have access to affordable and quality health care, it creates healthy and resilient communities. It’s going to take healthy resilient communities to address climate change and the health impacts,” said Dr. Kyle Leggott, assistant Professor of Family Medicine and policy scholar at the Farley Health Policy Center on the University of Colorado Anschutz Medical Campus. ### About Healthy Air & Water Colorado Healthy Air & Water Colorado is the only statewide advocate for public policy that focuses exclusively on the growing public health threats posed by climate change. The effort is a sister organization of Healthier Colorado, which is dedicated to policy solutions that give all Coloradans the chance to live healthier lives. By engaging frontline health care workers who see and treat the real health issues caused by our warming environment, we are combining fact-based research with clinical expertise to raise awareness and encourage action to advance policies that will help to avert our growing public health emergency.
Trucks
By Katherine E. Goff & Dr. Sheela Mahnke August 24, 2022
Katherine E. Goff & Dr. Sheela Mahnke urge the Air Quality Control Commission (AQCC) to adopt the Advanced Clean Trucks Rule
By Tamara Pogue April 13, 2022
Summit County Commissioner Tamara Pogue explains how the success of Summit County's model for long-term wildfire mitigation funding can be a model for preventing wildfire danger across Colorado
March 23, 2022
Out of control wildfires are threatening the health of every Coloradan
March 15, 2022
The science is clear. Air toxics damage our health. So why doesn't Colorado do more to regulate the pollution in the first place?
August 16, 2021
We’ve got a problem, Colorado: our air is downright dirty.
June 15, 2021
The 2021 Colorado Legislative Session has officially come to an end. This past session, we made significant progress on mitigating the worst health impacts of climate change.
More Posts

Want to make a difference?

If you are a health professional join our team. 
Donate to the cause.