SD HB1271

Prohibits injecting, releasing, or dispersing chemicals into the atmosphere for the purpose of modifying weather, sunlight intensity, temperature, or climate, with specific bans on aluminum, barium, PFAS-containing chaff, strontium, and sulfur dioxide

Establishes civil penalties of at least $100,000 per violation plus $10,000 per day for ongoing violations, with fines deposited into a new Weather and Climate Modification Monitoring Fund

Requires public and private airport operators to file quarterly reports with the Department of Transportation identifying any aircraft equipped with components used for atmospheric dispersal, with an exemption for agricultural aerial applicators

Department of Agriculture and Natural Resources must create an online form for public reporting of suspected violations and promulgate rules for investigating complaints and monitoring compliance

Businesses with in-state facilities that intend to conduct weather modification activities from outside South Dakota must register the chemicals they plan to disperse with the Secretary of State