A bill for an act prohibiting the intentional emission of air contaminants into the atmosphere, and providing penalties.

HF 2640 prohibits intentionally emitting chemicals or devices into the atmosphere within Iowa for the purpose of altering weather, climate, or sunlight intensity. It requires all Iowa airports open to the public to report monthly (starting October 2026) on aircraft equipped with such devices, including their presence, landings, takeoffs, or refueling. Non-compliant airport projects lose eligibility for state funding, and violations are punishable as class D felonies (up to 5 years in prison) for individuals or $100,000 civil penalties for corporate officers. This bill directly affects airport operators, aviation entities, and any organization using weather-modification technology within Iowa.