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Mount Washington Observatory

Scientific research for government, education and industry.

Science & Technology North Conway, NH EIN: 020225135 (IRS) Sign up to see website
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90
Integrity Assessment
Strong transparency
90/100 · methodology

About Mount Washington Observatory

Current summit conditions higher summits forecast upcoming events observatory online shop we really

Founded
Headquarters
North Conway, NH
Foundation type
Supporting organization (509(a)(3))
NTEE code
U31Z
IRS subsection
501(c)(c3)
Ruling date
Size
medium

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 1951

Mission

Scientific research for government, education and industry.

Focus areas & reach

· What they work on and where
Cause tags
SDG alignment The 17 UN Sustainable Development Goals (SDGs) are the global agenda for ending poverty, protecting the planet, and ensuring prosperity by 2030. We tag each charity to the goals its work advances.

How it stacks up against peers

· vs. 8 similar science & technology in United States
Program spending This charity: 71%
Peer average: 81%
CEO comp as % of revenue This charity: 4.11%
Peer average: 0.48%
Integrity Assessment This charity: 90
Peer average: 90

Concerns

· None found
No red flags found
Screened for IRS revocation history, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

Where every $1 goes

· FY2025 · IRS 990 (FY2025)
$0.71
Program$0.71

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

GiveRadar's verified records show Mount Washington Observatory with a complete profile, cross-referenced across 4 independent sources including the IRS.

  • It is one of the better-documented science & technology charities in the United States GiveRadar currently tracks, because GiveRadar has verified its financial disclosures and its governance. Most of those have little verified data on record yet. View this cohort
  • Established in 1936, it predates 94% of the science & technology charities in the United States GiveRadar has a founding year for. View this cohort
  • GiveRadar holds 6 years of financial filings for this organization, the most recent for fiscal year 2025 - a deeper filing history than 87% of the 3,236 science & technology charities in the United States with filings on record. See the filings
GiveRadar has verified
  • government registration
  • financial records (6 filed years)
  • disclosed leadership
  • a website
  • a contact email
  • a donation page
Not yet verified by GiveRadar
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

Mount Washington Observatory is a registered science & technology nonprofit based in North Conway, NH, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 1936 and has been operating for 90 years. Its EIN is 020225135. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 90/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $3M in annual revenue. 104 officers and directors are publicly disclosed. No red flags have been detected.

Mount Washington Observatory's EIN (Employer Identification Number) is 020225135. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.

Mount Washington Observatory has a GiveRadar Integrity Assessment of 90/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 90 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. For comparison, the average integrity assessment for science & technology charities in United States is 90/100.

Mount Washington Observatory is located in North Conway, NH, United States. The organization was established in 1936 and has been active for 90 years.

Based on official tax filings, Mount Washington Observatory has $3M in annual revenue. It allocates 71% of expenses to programs and services. This is below the average of 81% for science & technology charities in United States. Its revenue is below the peer average of $15M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Mount Washington Observatory is classified as a Science & Technology organization, registered in United States. It operates as a Supporting organization (509(a)(3)). By size, it is categorized as a medium organization. It has $3M in annual revenue. The organization has 104 disclosed officers and directors.

No red flags have been detected for Mount Washington Observatory. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

According to GiveRadar's records, Mount Washington Observatory holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 71% of expenses go to programs (the peer average is 81%). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

Current summit conditions higher summits forecast upcoming events observatory online shop we really Mount Washington Observatory is classified as a science & technology organization registered in United States. The organization was founded in 1936.

Among science & technology charities registered in United States: It allocates 71% of expenses to programs, below the peer average of 81%. Its annual revenue of $3M is below the peer average of $15M.

Yes, donations to Mount Washington Observatory are generally tax-deductible in the United States. Its EIN is 020225135, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Annual revenue
$1M-$10M
71% to programs
Source: IRS 990 (FY2025) why this matters
Unlock exact figures

Filing history

6 years on file from IRS 990 (FY2025): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2025, FY2024, FY2023, FY2022, FY2021, FY2020.
Financial details are free - with a GiveRadar account

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Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Staff & volunteers

From filings and published profiles

Employees
32

Leadership

From FY2025 filing

BE
Beth N•••••••
Treasurer

Officers & trustees (25)

Source: Public filings

See full names, roles, and stories

25 officers and trustees on file - free with a GiveRadar account.

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Latest news

From global news sources

10 articles found

From news sources and the organization. Shown for transparency; news never affects the integrity score.

Activity timeline

Filings and press mentions, merged

Lightning strikes captured over Mount Washington summit - WMUR
Jun 2026
www.wmur.com
Year-Round Snowfall At Mount Washington: A Weather Wonder - WJBQ
Jun 2026
wjbq.com
Year-Round Snowfall At Mount Washington: A Weather Wonder - 94.9 HOM
Jun 2026
949whom.com
Snowy Start To May For Mount Washington - Northeast Explorer
May 2026
northeastexplorer.com
The pinnacle for a peak: Commission sets sights on UNESCO recognition for Mount Washington - New Hampshire Bulletin
Apr 2026
newhampshirebulletin.com
Live from the Mount Washington Observatory - WJAR
Mar 2026
turnto10.com
Mount Washington Observatory receives $50,000 grant for STEM education - WMUR
Jan 2026
www.wmur.com
Mount Washington Observatory to launch first-ever broadcast meteorology internship - WMTW
Jan 2026
www.wmtw.com
Mount Washington Observatory - NH Business Review
Jan 2026
www.nhbr.com
At the top of New Hampshire's famous summit, the Mount Washington Observatory expands its mission - UnionLeader.com
Jan 2026
www.unionleader.com
Form filed
$2.7M revenue
FY2025
IRS 990
Form filed
$2.6M revenue
FY2024
IRS 990
Form filed
$6.2M revenue
FY2023
IRS 990
Form filed
$2.1M revenue
FY2022
IRS 990
Form filed
$1.8M revenue
FY2021
IRS 990
Form filed
$1.8M revenue
FY2020
IRS 990

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Cause areas in United States

How many charities work in each area, with this charity's area highlighted.

Human Services 322,679
Education 195,586
Arts & Culture 133,128
Advocacy & Civil Rights 128,026
Religion 114,636
Health 98,862
Community Development 56,086
Youth Development 53,450
Science & Technology this charity 7,612
See all cause areas in United States

Most common causes in United States

Causes charities work on most.

Community Development 235,146
Education 159,016
Religion 103,741
Arts & Culture 101,203
Human Rights 76,926
Health 65,250
Youth Development 47,775
Animal Welfare 32,425

Sources and verification

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2025 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 104 disclosed in the public registry.
News and media coverage
GDELT Project + Google News
Supplementary verification
Charity Navigator

Data freshness

Last updated
Jun 12, 2026
Registry checked
Jun 6, 2026
Profile completeness
100%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 10
  • Financial data · FY2025 on record
  • Named leadership · 104 officers on file
  • Executive pay · Disclosed
  • Government registration · Registered with an official registry
  • Mission statement · Published
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
  • Tax-deductibility · Verified
  • Founding date · 1936
Not available · 1
  • Programs & activities
    No named programs listed by the charity

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about Mount Washington Observatory

What is Mount Washington Observatory?
Mount Washington Observatory is a science & technology supporting organization (509(a)(3)) based in North Conway, United States. Current summit conditions higher summits forecast upcoming events observatory online shop we really
When was Mount Washington Observatory founded?
Mount Washington Observatory was founded in 1936.
Who leads Mount Washington Observatory?
Beth Newhouse serves as Treasurer.
Where is Mount Washington Observatory located?
Headquartered in North Conway, NH, United States.
What is Mount Washington Observatory's annual budget?
Annual revenue for fiscal year 2025 is approximately $1M-$10M. 71% of expenses go to program services.
Is Mount Washington Observatory trustworthy?
Mount Washington Observatory has a GiveRadar Integrity Assessment of 90 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Mount Washington Observatory's registration number?
IRS EIN: 020225135.
What is Mount Washington Observatory's website?
http://www.mountwashington.org