The AAVSO is an international non-profit organization of variable star observers whose mission is to enable anyone, anywhere, to participate in scientific discovery through variable star astronomy.

The American Astronomical Society (AAS), established in 1899 and based in Washington, DC, is the major organization of professional astronomers in North America. Its membership of about 7,000 individuals also includes physicists, mathematicians, geologists, engineers, and others whose research and educational interests lie within the broad spectrum of subjects comprising contemporary astronomy. The mission of the AAS is to enhance and share humanity’s scientific understanding of the universe.

The Astronomical Society of Eastern Missouri (ASEM) is an astronomy club based in St. Charles County, Missouri. Monthly meetings are held in the Weldon Springs Interpretive Center and Public Telescope Viewing sessions are held at the Broemmelsiek Park Astronomy Site on Friday evenings. Both activities are open to members and the public alike.

ASEM offers family friendly educational activities, outreach and special interest groups to promote better understanding in the science of astronomy.  A monthly newsletter is published that details group events, individuals, and upcoming activities. The group is an active member of the Mid-States Region of the Astronomical League and has links with many other similar organizations across the mid-west.  Detailed information on membership benefits can be found on the ASEM web site.

Astronomical Society of the University of Illinois

Astronomy Club of Tulsa

The River Bend Astronomy Club serves amateur astronomers from Southern Illinois and the St. Louis Metropolitan area. The RBAC is a member of the Astronomical League and registered as a member of the North Central Region of the Astronomical League.

Members enjoy observing events, educational programs, and each others company. Public outreach programs include public telescope viewing sessions, workshops, and lectures to requesting organizations, schools and youth groups.

If interested contact the group through their web site link shown above.

Includes animation link. Drop down menu also has links for clouds including forecast for day and night

Predicting Seeing Conditions: This page includes a forecast for seeing conditions for the entire North American Continent.  The page is set up just like a satellite weather page including animations.  It also includes a guide for numerically recording conditions.

Weather and Clear Sky Clock for St. Louis.

Instant Sun/Moon rise and set table (as well as twilight) from USNO.

Space Weather:  Offers alerts and predictions for aurora, meteor showers and other space phenomena that can have impact on the Earth's weather system

Visible, infrared, etc.

Great for clouds

Interactive sky maps - printable:  St. Louis is about 39 N latitude and 90 W longitude.

Danville Conservation Area is in Montgomery County, southeast of the community of Danville on Route RB. Mostly wooded, this 3,136 acre area features numerous narrow ridges. For more information call: 573-815-7900

Near St. Louis. SLAS holds telescope viewing sessions at Babler every year. Visit the SLAS Event Calendar for upcoming viewing sessions. Camping is available and viewing can be done in those areas. With permission from the park office you might be able to observe from the open filed near the monument.
Contact the park office at 636-458-3813 for additional information.

This agency is responsible for all conservation areas.

Almost 500 acres of multi-use trails; Off-Leash Dog Area; fishing lakes; picnic shelters; and Astronomy Viewing Area located on Schwede Rd south of O'Fallon, MO. Broemmelsiek Park offers first class astronomy viewing area with 10 concrete viewing stations equipped with electrical service to accommodate the latest telescopes. The site is open on a first-come, first-served basis and serves as the primary location for fun weekly stargazing opportunities.

Perhaps best known for the largest group of petroglyphs yet discovered in Missouri. Camping is available and viewing can be done in those areas. With permission from the park office you might be able to observe from the petrogyph parking lot. Contact the park office at 636-586-5768 for additional information

Located 14 miles north of Troy, MO. The area contains 315 acres of timber and 495 acres of open fields. There are 2 good open areas for observing. For more information call: 636-441-4554