Arizona Senators Challenge EPA Park Air Rule
Mark Kelly and Ruben Gallego join colleagues in questioning a policy shift that may increase haze in national parks.
Updated on Oct. 20, 2026 in National Parks
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Should the EPA prioritize strict air quality protections over flexible emission benchmarks for national parks?
Arizona Senators Mark Kelly and Ruben Gallego have joined a group of twelve senators in questioning an EPA rule change regarding the Regional Haze Program. The senators expressed concern that the new policy allows national parks to bypass critical emission reductions.
Why it matters
The senators argue that relaxing these standards will increase air pollution in national parks, potentially hindering the goal of achieving natural visibility by 2064. They are seeking clarification from the EPA on how this policy aligns with Clean Air Act mandates.
Power-sector sulfur dioxide emissions rose 18% in 2025, while nitrogen oxides increased by 7%. These figures follow a national recreation economic input of $1.3 trillion supporting 5.2 million jobs.
The players
Mark Kelly
Mark Kelly is a Democratic U.S. Senator representing the state of Arizona.
Ruben Gallego
Ruben Gallego is a Democratic U.S. Senator representing the state of Arizona.
Lee Zeldin
Lee Zeldin serves as the Administrator of the Environmental Protection Agency.
The details
The EPA now allows parks to skip emission reductions if they are projected to meet a specific uniform rate of progress benchmark. Lawmakers worry this change undermines the Regional Haze Program, which relies on strict oversight to maintain air quality at sites like the Grand Canyon.
Timeline
2025 marked an increase in power-sector sulfur dioxide and nitrogen oxides emissions.
On Monday, October 19, 2026, the senators submitted their formal letter to the EPA.
The target year to achieve natural visibility in all national parks is 2064.
Travel Outlook
The senators contend that the EPA's recent rule change deviates from the core oversight requirements established by the Clean Air Act. This policy shift marks a significant departure from long-standing federal efforts to curb visibility-impairing pollutants in protected lands.
Visitors to areas like the Grand Canyon should monitor air quality reports, as changes in emission standards could impact visibility and park conditions over time. Being aware of these regulatory shifts helps travelers understand the long-term environmental factors affecting their favorite outdoor destinations.
The takeaway
Maintaining air quality is essential for the $29 billion in annual spending generated by national park visitors. Ensuring these standards remain high protects both the ecological health of the parks and the gateway communities that rely on their tourism.
Further reading
Learn more about conservation efforts at National Parks.
Source note: This article includes information reported by KJZZ.
Live Poll
Should the EPA prioritize strict air quality protections over flexible emission benchmarks for national parks?
