A bill for an act relating to the intentional emission of air contaminants into the atmosphere.

HF 927 prohibits intentionally releasing air contaminants into Iowa's atmosphere specifically to alter temperature, weather, or sunlight intensity. It directly affects any entity or individual conducting such weather-modification activities within Iowa. The bill requires the Environmental Protection Commission to create rules banning these emissions, allowing for emergency rulemaking to take effect immediately. These rules supersede other laws and must be published as a notice of intended action. The law focuses on preventing intentional atmospheric manipulation for weather control purposes.