Rank
274 10
Visitors
94.4M 3M

The Weather Channel and weather.com provide a national and local weather forecast for cities, as well as weather radar, report and hurricane coverage

Rank
1,399 2
Visitors
21.8M 28K

Weather Underground provides local & long-range weather forecasts, weather reports, maps & tropical weather conditions for locations worldwide

Rank
1,528 147
Visitors
20.1M 1.9M

National weather service.

Rank
1,393 205
Visitors
21.9M 3.4M

NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.

Rank
18,525 2,600
Visitors
2.1M 238K

WeatherBug has current and extended local and national weather forecasts, news, temperature, live radar, lightning, hurricane alerts and more

Rank
619 47
Visitors
45.4M 3.3M

Accuweather.com is ranked number 619 in the world, hosted in Netherlands and links to network IP address 23.1.79.237.

Rank
4,453 606
Visitors
7.7M 1.1M

USGS.gov | Science for a changing world.

Rank
2,767 451
Visitors
11.8M 2M

The Weather Network provides the most reliable, detailed and latest weather forecasts, maps (inlcuding Satellite and Radar) and alerts for the US.

Industry
Rank
5,943 1,610
Visitors
5.9M 2M

Get the latest space exploration, innovation and astronomy news. Space.com celebrates humanity's ongoing expansion across the final frontier.

Rank
40,124 2,770
Visitors
1.1M 70.9K

Space and astronomy news

Rank
2,922 159
Visitors
11.2M 579.9K

Live Science features groundbreaking developments in science, space, technology, health, the environment, our culture and history.

Rank
2,152 155
Visitors
14.8M 897K

Explore National Geographic. A world leader in geography, cartography and exploration.

Rank
4,360 275
Visitors
7.8M 473.2K

Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries in astronomy, anthropology, biology, chemistry, climate & environment, computers, engineering, health & medicine, math, physics, psychology, technology, and more -- from the world's leading universities and research organizations.

Rank
651 274
Visitors
43.4M 11.7M

Explore the fact-checked online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of objective articles, biographies, videos, and images from experts.

Rank
1,734 402
Visitors
18M 3.1M

A+E Networks UK’s brands include HISTORY, CI, Lifetime, H2 and BLAZE in the UK. A joint venture between A+E Networks, the media company also broadcasts to 102 territories across Europe, Middle East and Africa.

Rank
7,426 418
Visitors
4.9M 259.9K

Phys.org - News and Articles on Science and Technology.

Rank
28,403 3,430
Visitors
1.5M 178.5K

Based in Austin, TX, the EarthSky team has a blast bringing you daily updates on your cosmos and world. We love your photos and welcome your news tips.

Rank
98,983 9,790
Visitors
473.7K 46.5K

Intellicast | Weather Underground.

Rank
4,626 251
Visitors
7.4M 345.1K

Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.

Rank
1,141 131
Visitors
26.2M 2.4M

First published in 1869, Nature is the world’s leading multidisciplinary science journal. Nature publishes the finest peer-reviewed research that drives ground-breaking discovery, and is read by thought-leaders and decision-makers around the world.

Rank
8,348 747
Visitors
4.4M 384.7K

Sharing the most fascinating and inspiring science news. We analyse and fact check to bring you the best in real, genuine scientific research you can trust.

Rank
3,448 60
Visitors
9.7M 154.1K

Science | AAAS.

Rank
3,673 1,410
Visitors
9.2M 2.3M

United States Environmental Protection Agency | US EPA.

Rank
10,459 4,630
Visitors
3.6M 1M

The National Geographic Society is a global nonprofit organization committed to exploring and protecting our planet.

Rank
3,488 269
Visitors
9.6M 717.3K

The National Park Service cares for special places saved by the American people so that all may experience our heritage.

Rank
84,480 35,600
Visitors
546.3K 148.1K

Information about each planet and moon in our solar system with many pictures, discussion of the history of its discovery, exploration, and physical characteristics. In addition to the planets, there are also pages about the Sun, many moons, and asteroids, comets and meteorites.

Industry
Rank
137,230 30,000
Visitors
353.2K 57.5K

Interesting facts about space, galaxies, planets, moons and other solar system objects. Explore the universe through interesting diagrams, photos and more!

Rank
51,977 7,360
Visitors
845.3K 94.9K

Astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the Big Bang, black holes, comets, constellations, eclipses, exoplanets, nebulae, meteors, quasars, observing, telescopes, NASA, Hubble, space missions, stargazing, and more

Rank
5,568,046
Visitors
12.7K

Sky & Tel covers the latest night-sky events, astronomy news, astrophotography and observing tips. Also browse our video & podcast guides to tonight's sky.

Industry
Rank
6,957 351
Visitors
5.2M 223.1K

Smithsonianmag.com places a Smithsonian lens on the world, looking at the topics and subject matters researched, studied and exhibited by the Smithsonian Institution -- science, history, art, popular culture and innovation -- and chronicling them every day for our diverse readership.

Industry
Rank
762 111
Visitors
37.6M 5.7M

Medical news and health news headlines posted throughout the day, every day

Rank
839 140
Visitors
34.5M 4.5M

Take online courses on Study.com that are fun and engaging. Pass exams to earn real college credit. Research schools and degrees to further your education.

Rank
1,752 1,080
Visitors
17.8M 6.2M

Lumen Learning | Open for student success.

Rank
8,847 135,000
Visitors
4.2M 3.8M

AirNow -

Rank
166 205
Visitors
148.1M 76.2M

Captcha Challenge… .

Rank
754 58
Visitors
38M 2.4M

Dictionary.com is the world’s leading online source for English definitions, synonyms, word origins and etymologies, audio pronunciations, example sentences, slang phrases, idioms, word games, legal and medical terms, Word of the Day and more. For over 20 years, Dictionary.com has been helping millions of people improve their use of the English language with its free digital services.

Industry
Rank
6,247 1,640
Visitors
5.7M 1.1M

Explore Bio.com, your source for true stories about notable people. Watch full episodes, read exclusive biographies and discover the unexpected ways you're connected to your favorite celebrities.

Rank
1,897 147
Visitors
16.6M 1.1M

Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontline, NOVA, PBS Newshour, Masterpiece and many others.

Rank
19,327 16,800
Visitors
2.1M 884.8K

Home

Rank
3,584 1,260
Visitors
9.4M 2.2M

The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 162 million items. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.

Industry
Rank
8,703 38,200
Visitors
4.2M 3.3M

When it comes to you and your loved one's health, you deserve the best. IQAir Air Purifiers produce hospital grade clean air in your home. Learn More Now!

Rank
12,060 5,470
Visitors
3.1M 2.3M

Recreation.gov - Bring Home a Story

Rank
574 52
Visitors
48.6M 4.3M

As the nation’s health protection agency, CDC saves lives and protects people from health, safety, and security threats.

Rank
243 18
Visitors
105.2M 7.5M

Www.ca.gov | California State Portal.

Rank
5,001 1,160
Visitors
6.9M 1.2M

Whether you have questions about the universe or a molecule compound or what biome you live in, Sciencing.com is your go-to source for all things science.

Industry
Rank
4,049 842
Visitors
8.4M 2M

Search over 75,000 trails with trail info, maps, detailed reviews, and photos curated by millions of hikers, campers, and nature lovers like you.

Rank
3,058 288
Visitors
10.8M 1M

USDA.

Industry
Rank
2,722 912
Visitors
12M 5.3M

Rei.com is ranked number 2722 in the world, hosted in United States and links to network IP address 184.30.98.137.

Rank
12,561 1,400
Visitors
3M 339.6K

Science news and science articles from New Scientist

Industry
Rank
11,044 2,460
Visitors
3.4M 865K

Discover the latest science and technology news and videos on breakthroughs that are shaping the world of tomorrow with Futurism.

Industry
Rank
11,197 736
Visitors
3.4M 211.8K

PNAS.

Rank
12,043 478
Visitors
3.1M 108.2K

Publisher of 40 research and review journals including Cell, Neuron, Immunity, Current Biology, AJHG, and the Trends journals