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

SKW5938
active

Modified Twin Turboprop

Precipitation Enhancement - California

11,000 ft
255 kts
140°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N100NT
active

Cessna / Piper Turboprop

Precipitation Enhancement - California

11,575 ft
162 kts
66°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
SKW4956
active

Modified Twin Turboprop

Precipitation Enhancement - Colorado

10,850 ft
270 kts
3°
Colorado
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N31PR
active

Cessna / Piper Turboprop

Sierra Nevada Snowpack Program

17,000 ft
155 kts
133°
California
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
N225SB
active

Modified Twin Turboprop

Cloud Seeding Research Flight - California

10,000 ft
263 kts
213°
California
Chemicals (2)
AgI•Silver IodideBiI₃•Bismuth Tri-iodide
HumanSoilWildlife
SKW3404
returning

Modified Twin Turboprop

Precipitation Enhancement - California

10,600 ft
252 kts
86°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
SWA2044
active

Modified Twin Turboprop

Precipitation Enhancement - Colorado

10,175 ft
280 kts
19°
Colorado
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N7807R
returning

Cessna / Piper Turboprop

Precipitation Enhancement - Colorado

14,375 ft
153 kts
215°
Colorado
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
SWA1315
active

Modified Twin Turboprop

Precipitation Enhancement - California

11,050 ft
266 kts
358°
California
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
N450KM
active

Beechcraft King Air

Sierra Nevada Snowpack Program

22,000 ft
243 kts
316°
California
Chemicals (3)
AgI•Silver IodideKI•Potassium IodideCO₂ (solid)•Dry Ice
HumanSoilWildlife
N911MN
active

Modified Twin Turboprop

Precipitation Enhancement - South Dakota

15,825 ft
259 kts
286°
South Dakota
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife
AIP1565
active

Modified Twin Turboprop

Precipitation Enhancement - North Dakota

15,850 ft
265 kts
287°
North Dakota
Chemicals (3)
AgI•Silver IodideAgIO₃•Silver IodateKI•Potassium Iodide
HumanSoilWildlife

Chemicals Currently Being Dispersed

Full Database
Silver IodideAgI

Dispersed by: SKW5938, N100NT, SKW4956, N31PR, N225SB, SKW3404, SWA2044, N7807R, SWA1315, N450KM, N911MN, AIP1565

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: SKW5938, N100NT, SKW4956, SKW3404, SWA2044, N7807R, SWA1315, N911MN, AIP1565

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: SKW5938, N100NT, SKW4956, N31PR, SKW3404, SWA2044, N7807R, SWA1315, N450KM, N911MN, AIP1565

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: N31PR, N450KM

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...
Bismuth Tri-iodideBiI₃

Dispersed by: N225SB

Human: Bismuth is considered one of the least toxic heavy metals. BiI₃ was specifically developed as a less toxic alternative t...
Soil: Lower soil toxicity than silver iodide. Bismuth is relatively inert in soil environments and has minimal impact on soil ...
Wildlife: BiI₃ was developed specifically as a less environmentally harmful alternative to AgI. Toxicity data is more limited, but...

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