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International Association of Meteorology and Atmospheric Scienc

EIN 87-4151202 · Madison, WI

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthNot ratedToo small or too little detailGovernanceNot ratedThe short tax form does not cover thisImpact evidenceDescribes programsHow well its results are evidenced

What it says it does

The corporation is organized exclusively for the promotion of charitable scientific and educational purposes and to promote the study of communication about and the public education and awareness of the sciences of the atmospheres of Earth.

Income
$60,423
Spending
$113,966
Reserves
40.6 months of spending
Largest source of income
donations and private grants, 82%

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

We do not score finances when yearly spending is very small or the return has too little detail. The ratios stop meaning much at that size.

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

This organization files the short tax form, which does not ask about boards, policies or audits. That is normal for a small charity and is not a mark against it.

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (6)
  1. $14,000 spent. Through a grant application process IAMAS supports the assemblies and workshops of its Commissions. The International Commission on Polar Meteorology ICPM is a focus for research into the meteorology and climatology of the Arctic and Antarctic. Commision participated in the IAMAS sponsored meeting in Busan. The commission also supports the upcoming 21st Workshop on Antarctic Meteorology and Climate,
  2. $6,371 spent. IAMAS supports the attendance of early career scientists at its assemblies and other conferences and workshops. For BACO 2025 in Busan IAMAS supported facilities for total of $6371 was awarded. In addition 28 early career scientists were supported to attend the conference.
  3. $8,000 spent. ICCL represented IAMAS in sponsoring the GEWEX Open Science Conference. A grant funded the planning of a pan-cryospheric meeting covering all aspects of the cryosphere and its climate interactions. The event includes participants from various fields from modelers and observers to social scientists and community organizers. We invite established and up-and-coming experts along with early career researchers ECRs to share their research and explore the current state of cryospheric science in early 2026.
  4. $10,000 spent. Through an application process all IAMAS commissions can apply for funds to achieve their objectives that align with their and IAMAS mission.Support for the International Radiation Commission IRC participation in BACO2025
  5. $10,000 spent. Support for the International Commission on Atmospehric Chemistry and Global Pollution iCACGP EGU 2025 General Assembly
  6. $10,000 spent. Support for International Commission on Tropical Meteorology workshops

Source: Form 990EZ for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated November 6, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since July 2022.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated November 4, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.