Tropospheric Ozone Research Act of 2026

The Tropospheric Ozone Research Act of 2026 establishes a competitive grant program for universities, national laboratories, and nonprofit research groups to study the climate impacts of ozone in the lower atmosphere. This research will focus on how ozone levels affect global and regional temperatures, crop and forest health, and interactions with other air pollutants, while also expanding monitoring networks in rural and understudied areas. The Environmental Protection Agency is authorized to award these grants and must submit a comprehensive report to Congress within four years detailing findings on ozone's contribution to warming, health effects, and potential mitigation strategies. Funding is provided for fiscal years 2027 through 2030 to support the research program, program administration, and the final reporting requirement.