A bill for an act relating to the intentional emission of air contaminants into the atmosphere, including prohibitions and reporting requirements, and providing penalties.

HF 2173 prohibits the intentional emission of chemicals or devices into Iowa's atmosphere specifically to alter weather, climate, or sunlight intensity. It requires all public airports to report monthly (starting October 2026) on aircraft equipped with such weather-modifying technology, including their presence, landings, takeoffs, or refueling at the airport. Airport projects failing to comply lose eligibility for state funding until they report properly. Violations are classified as class D felonies for individuals and can trigger up to $100,000 in civil penalties for corporate officers.