GeoLawWatch: Tracking Weather & Climate Legislation

Tracking weather modification, cloud seeding, and geoengineering bills in real time across the US.

Geoengineering Bills by State

2025-2026 Regular Session

Adjourned Session ended May 31, 2026

Governor: J.B. Pritzker

Statutory Squirrel blog

Bill # Details Effective Status
2023-2024 Regular Session
SB0134 WEATHER MODIFICATION-SEEDING Sine die
A minimalist two-page bill that would ban all weather modification in Illinois but provides no penalties, no enforcement agency, and no mechanism for compliance, making it a symbolic prohibition rather than an enforceable law. Last update
Tue 7 Jan 2025
  Note: Assigned to Environment and Conservation, returned to assignments - no further action taken.
SB3095 WEATHER MODIFICATION-SEEDING Sine die
A word-for-word reintroduction of Senator Anderson's failed 2023 weather modification ban, which met the same fate in a different committee - twice postponed, then returned to Assignments, where it died without a vote despite an attempted amendment. Last update
Tue 7 Jan 2025
  Note: Twice, assigned to Executive committee, and returned to assignments until sine die
2025-2026 Regular Session Session Adjourn Sun 31 May 2026
SB1426 WEATHER MODIFICATION-SEEDING Superseded
Illinois opts for the most straightforward possible approach to weather modification regulation: a complete prohibition with no accompanying enforcement provisions, penalties, or an administrative framework. Last update
Thu 13 Mar 2025
  Note: Wording tweaked and reintroduced as SB2956
SB2956 WEATHER MODIFICATION ACT Sine die
Illinois SB2956 declares weather modification prohibited statewide but provides no enforcement mechanism, penalties, or regulatory framework—making it a purely symbolic prohibition that couldn't actually stop anyone from cloud seeding. Last update
Tue 27 Jan 2026
  Note: Remained in assignments