Annual Fund · This Giving Season
51,000 Days.
Not One Missed.
Every single day since February 1, 1885 — through wars, storms, and pandemics — someone has climbed Great Blue Hill and recorded the weather. Help us make sure that never stops.
As federal science funding erodes, Blue Hill Observatory stands at a crossroads. We hold North America's longest continuous weather record — data that NOAA, NASA, and leading universities rely on. That record doesn't maintain itself. It takes people who believe the past 140+ years are worth protecting.
"The most homogeneous climate record in North America."— World Meteorological Organization
Join Our Community of Supporters
Every gift level comes with meaningful recognition and access.
Observer
$1,000 – $9,999- Named in our Annual Report
- Invitation to Donor Reception
- Exclusive Observatory access
Guardian
$10,000 – $49,999- All Observer benefits
- Private guided tour
- Recognition on donor wall
Founder
$50,000+- All Guardian benefits
- Named endowment opportunity
- Seat at annual science briefing
Your Gift in Action
Every dollar goes directly to protecting the science and the people who make it possible.
Sponsors a full-day STEM field trip for a class of 25 students
Funds one full month of daily weather observations and data archiving
Supports a semester of professional development for 20 educators
Underwrites a half year of public programming and community events
Enables a major equipment upgrade for continued research accuracy
A transformational leadership gift to protect and preserve the observation program – contact us directly to discuss naming and legacy opportunities tailored to your vision
Why This Moment Matters
Rising Urgency
Climate change is no longer abstract — communities need trusted local data now more than ever. Blue Hill is one of the only places that can provide it.
140+ Years on the Line
Without sustained philanthropic support, this irreplaceable record faces real risk. There is no backup. There is no substitute.
Capacity to Grow
With renewed investment, BHO can expand programs, hire staff, and modernize the infrastructure that keeps the record alive.
Proven Track Record
141 years. Not one day missed. Your investment is backed by an unmatched record of commitment to science.
What Your Donation Sustains
- North America's longest continuous weather record — 51,000+ unbroken days from the same hilltop, an irreplaceable baseline for climate change research used by NOAA, NASA, and universities worldwide.
- A National Historic Landmark — one of only 6 WMO Centennial Climate Stations in the U.S., with 635 ft of elevation and a view stretching 10 miles to the Atlantic coast.
- Daily scientific observation — our Chief Observer and Chief Scientist publish daily, monthly and annual analysis distributed to meteorologists, researchers, and the public.
- Thousands of young people a year inspired through hands-on STEM and climate science programming across 100+ New England schools.
- Strategic partnerships with NOAA, NASA, MIT, the American Meteorological Society and the Museum of Science.
Ways to Give
Every gift matters. Choose the giving method that works best for you.
Most Common
Give Online
Secure donation page — no account required. All major credit cards accepted.
By Phone
Call to Donate
Credit card donations accepted by phone during regular office hours.
(617) 696-0562By Mail
Send a Check
Make checks payable to Blue Hill Observatory Science Center
1 Observatory Service RdMilton, MA 02186
At No Cost to You
Shop & Give
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Transparency 2026
501(c)(3) · Tax ID: 22-2517414 · All gifts are fully tax-deductible.
