Charities United States Science & Technology Mount Washington Observatory
Mount Washington Observatory logo

Mount Washington Observatory

Scientific research for government, education and industry.

Science & Technology North Conway, NH EIN 020225135 · IRS Sign up to see website
Claim this charity
Ready to give?
100% goes to Mount Washington Observatory

GiveRadar doesn't take a cut. Donate directly on their site.

Make your donation
89
Integrity Assessment
Strong transparency
89/100 · 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
Science & Technology · NTEE U31Z
Cause tags

How it stacks up against peers

· vs. 8 similar science & technology in United States
Program spending This charity: 0%
Peer average: 11%
CEO comp as % of revenue This charity: 4.29%
Peer average: 0.48%
Integrity Assessment This charity: 89
Peer average: 89

Red flags

· All clear
IRS revocation history
OFAC / EU / UN sanctions
Open investigations
Governance scandals
Related-party deals
Excessive exec comp

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. It has a GiveRadar Integrity Assessment of 89/100 (Strong transparency), indicating well-documented governance, financials, and contact details. The organization reports $3M in annual revenue. 104 officers and directors are publicly disclosed. No red flags have been detected.

Mount Washington Observatory has a GiveRadar Integrity Assessment of 89/100. 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 89 ('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 89/100.

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. Its revenue is below the peer average of $14M. 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.

Mount Washington Observatory has a GiveRadar Integrity Assessment of 89/100 (Strong transparency) and no red flags have been detected, which suggests it is a well-documented organization. It is regulated by the IRS. You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research purposes and does not endorse any organization. Always do your own due diligence.

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: Mount Washington Observatory's GiveRadar Integrity Assessment of 89/100 is in line with the peer average of 89/100. Its annual revenue of $3M is below the peer average of $14M.

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.

Verified against 4 official sources, last refreshed .

Annual revenue
$1M-$10M
0% 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

See 5 years of revenue, expense breakdowns, and balance sheet.

Sign up to view
Already have an account? Log in
No credit card · Takes 20 seconds

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.

Leadership

BE
Beth Newhouse
Treasurer

Officers & trustees (25)

Source: Public filings

AL
Alexandra B••••
TRUSTEE
BE
Beth N•••••••
TREASURER
BR
Brenda S•••••••
Director
BR
Bruce S••••
IMMEDIATE PAST CHAIR
DO
Donna D•••
INTERIM EXECUTIVE DIRECTOR
DR
Drew B•••
EXECUTIVE DIRECTOR
DR
Drew L•••••
TRUSTEE
ED
Ed B•••••••
TRUSTEE
ER
Erica B•••••
CHAIR
GA
Gail F P••••
TRUSTEE
GA
Gary M••••••••
TRUSTEE
HA
Hayley L•••••• P••••••
TRUSTEE
HO
Howie W•••••
TRUSTEE
JA
Jack B M••••••••
TRUSTEE
JE
Jeannie O•••••
SECRETARY
JO
John G•••••
TRUSTEE
JO
Jonathan H•••••
TRUSTEE
KA
Karen U•••••••
TRUSTEE
KE
Ken R•••••••
TRUSTEE
LE
Lesley-Ann D•••••••••••••
TRUSTEE
LO
Lourdes A•••••
TRUSTEE
MA
Marsha R•••
TRUSTEE
MA
Mary S•••••••
TRUSTEE
MI
Michelle C•••
TRUSTEE
MI
Mike M••••
TRUSTEE
Full names, contact details & compensation

Free with an account.

Unlock

Latest news

From global news sources

No recent news coverage found

News coverage will appear here when articles mention this organization.

Activity timeline

Filings and press mentions, merged

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

No reviews yet. Be the first to share your experience.

Have you donated or volunteered here?

Share your experience - it takes 30 seconds. Verified reviews help other donors decide.

Sign up to write a review

Peer charities

Other science & technology in United States, by integrity assessment

Charity Score Revenue Program %
Mount Washington Observatory This page 89 $2.6 million -
Bioinnovations Institute 89 $1.3 million 91%
Collaborative for Leadership in Ayres Sensory Integration 89 $1.8 million -
Blue Marble Space 89 $5.1 million -
Corrim Consortium for Research on Renewable Industrial Materials 89 $2.4 million -
Freshwater Society 89 $1.4 million 0%
Sigma Xi the Scientific Research Honor Society Inc 89 $4.9 million -
Mind Research Institute Inc 89 $5.7 million -
Science Communication Lab Inc 89 $2.2 million -

Sources and verification

Refreshed

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.
Supplementary verification
Charity Navigator

Data freshness

Last updated
May 27, 2026
Profile completeness
90%

What we don't know

Honest gaps - our score reflects transparency, not impact

Programs & projects
No named programs listed by the charity
Operating reach
Countries where programs run not specified

Methodology

GiveRadar combines public registry filings, ProPublica Nonprofit Explorer, Charity Navigator, GuideStar, and news archives into a single 0-100 integrity assessment. We don't take a cut of any donation, ever.

Read full methodology

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, United States.
What is Mount Washington Observatory's annual budget?
Annual revenue for fiscal year 2025 is approximately $1M-$10M. 0% of expenses go to program services.
Is Mount Washington Observatory trustworthy?
Mount Washington Observatory has a GiveRadar Integrity Assessment of 89 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