Cloud seeding aircraft dispersing flares over mountain range
Real-Time Monitoring

ChemTrail.app

US Cloud Seeding Operations Tracker

Track cloud seeding aircraft, monitor active programs, and explore comprehensive data on weather modification operations across the United States.

Active Flights

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Operators

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Aircraft Types

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Chemicals

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Active Programs

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IMPORTANT

Environmental Risks

What are the known and unknown risks of spraying chemicals into our atmosphere? Explore impacts on human health, soil ecosystems, and wildlife.

Human Health Soil Impact Wildlife
Read the full risk assessment
IMPORTANT

Legal Ramifications

Cloud seeding programs operate with no public consent. Who gave them the right to spray chemicals into our skies? Explore the constitutional questions and regulatory gaps.

Civil Rights Consent Legal Gaps
Explore the legal analysis

Live Flight Tracking

Full Map

Active Flights

REH50
returning

Modified Twin Turboprop

Precipitation Enhancement - California

10,750 ft
266 kts
283°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N771PD
active

Cessna / Piper Turboprop

Snowpack Enhancement - Colorado Mountains

19,450 ft
135 kts
66°
Colorado
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
LBQ425
active

Modified Twin Turboprop

Snowpack Enhancement - Colorado Mountains

25,000 ft
252 kts
96°
Colorado
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
N680TW
returning

Modified Twin Turboprop

Snowpack Enhancement - Montana Mountains

19,350 ft
254 kts
333°
Montana
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
UAL406T
active

Modified Twin Turboprop

Precipitation Enhancement - California

11,050 ft
265 kts
82°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
SKW5114
returning

Beechcraft King Air

Precipitation Enhancement - Colorado

11,775 ft
218 kts
288°
Colorado
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N909SB
active

Beechcraft King Air

Precipitation Enhancement - California

14,000 ft
203 kts
285°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
JSX311
returning

Modified Twin Turboprop

Precipitation Enhancement - California

10,125 ft
253 kts
59°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
TWY307
returning

Modified Twin Turboprop

Precipitation Enhancement - California

11,325 ft
268 kts
328°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
IJA800
returning

Modified Twin Turboprop

Precipitation Enhancement - Colorado

12,050 ft
357 kts
75°
Colorado
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
FFT3777
returning

Modified Twin Turboprop

Precipitation Enhancement - California

12,025 ft
386 kts
303°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
AAL2421
returning

Beechcraft King Air

Fog Dispersal / Low-level Seeding - California

5,800 ft
190 kts
345°
California
Chemicals (3)
NaCl•Sodium ChlorideCaCl₂•Calcium ChlorideC₃H₈•Liquid Propane
HumanSoilWildlife

Chemicals Currently Being Dispersed

Full Database
Silver IodideAgI

Dispersed by: REH50, N771PD, LBQ425, N680TW, UAL406T, SKW5114, N909SB, JSX311, TWY307, IJA800, FFT3777

Human: At typical cloud seeding concentrations (nanograms per liter in precipitation), silver iodide poses minimal risk to huma...
Soil: Silver deposited from cloud seeding accumulates over time. While concentrations measured near seeding areas are typicall...
Wildlife: Aquatic organisms are most sensitive to silver. Fish and invertebrates can be affected at very low concentrations. Wildl...
Silver IodateAgIO₃

Dispersed by: REH50, UAL406T, SKW5114, N909SB, JSX311, TWY307, IJA800, FFT3777

Human: Silver iodate is more acutely hazardous than silver iodide due to its oxidizing nature. Workers handling flares face the...
Soil: Shares the soil contamination profile of silver iodide, with additional concerns from the oxidizing iodate component and...
Wildlife: Toxicity profile similar to silver iodide with additional oxidizer concerns. Most relevant for wildlife near active flar...
Potassium IodideKI

Dispersed by: REH50, N771PD, LBQ425, N680TW, UAL406T, SKW5114, N909SB, JSX311, TWY307, IJA800, FFT3777

Human: Potassium iodide is generally safe at cloud seeding concentrations. It is widely used in medicine (thyroid protection). ...
Soil: KI has minimal soil impact. Potassium is a natural soil nutrient, and iodide levels from cloud seeding are typically wel...
Wildlife: KI is one of the safest cloud seeding additives for wildlife and livestock. Iodine is an essential nutrient, and seeding...
Dry IceCO₂ (solid)

Dispersed by: N771PD, LBQ425, N680TW

Human: Dry ice is one of the safest cloud seeding agents from an environmental toxicity perspective. Primary risks are occupati...
Soil: Dry ice has essentially no negative soil impact. It sublimates to carbon dioxide, which is naturally present in soil and...
Wildlife: Dry ice is the most environmentally benign cloud seeding agent. Risks to animals are negligible outside of extremely unl...
Sodium ChlorideNaCl

Dispersed by: AAL2421

Human: Sodium chloride is one of the most benign seeding agents. Environmental concentrations from seeding are trivial compared...
Soil: Salt from cloud seeding is generally insignificant compared to natural deposition and irrigation-related salinity. Howev...
Wildlife: Minimal animal impact. The quantities dispersed in cloud seeding are tiny relative to natural and agricultural salt sour...
Calcium ChlorideCaCl₂

Dispersed by: AAL2421

Human: CaCl₂ is more irritating than table salt but environmental concentrations from cloud seeding are extremely low. Primary ...
Soil: Calcium chloride has minimal negative soil impact at cloud seeding concentrations. Calcium can actually be beneficial to...
Wildlife: Very low risk to animals. CaCl₂ from cloud seeding adds negligible amounts to the environment compared to natural minera...
Liquid PropaneC₃H₈

Dispersed by: AAL2421

Human: Propane is primarily an occupational hazard (fire, explosion, asphyxiation). Once dispersed in the atmosphere, it poses ...
Soil: Propane has no soil impact from cloud seeding operations. It evaporates completely....
Wildlife: Propane is environmentally benign for cloud seeding purposes. All risks are limited to the immediate area around ground-...

Aircraft Fleet

15 tracked aircraft types

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Operators

10 active companies

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Chemicals

10 seeding agents

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Programs

9 active states

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Active State Programs

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California

California Cloud Seeding Program

Snowpack enhancementPrecipitation augmentation

Colorado

Colorado Cloud Seeding Program

Snowpack enhancementWater supply augmentation

Idaho

Idaho Cloud Seeding Program

Snowpack enhancementHydroelectric water supply

Nevada

Nevada Cloud Seeding Program

Snowpack enhancementPrecipitation augmentation

New Mexico

New Mexico Cloud Seeding Program

Precipitation enhancement

North Dakota

North Dakota Cloud Modification Project

Rainfall enhancementHail suppression

Effectiveness

5-15%

Estimated seasonal precipitation increase from cloud seeding programs

Colorado River Basin

7 States

Cooperative cloud seeding program serving 40 million people

Regulation

9 States

With active, state-sanctioned cloud seeding programs in the US