Openings · last 7 days
4
Booking reality
Campsite Sniper detected 4 site openings here in the last 7 days
01 · Detected Opening History · the openings record · file CS-233300
When Observatory Campground reopens
Observatory Campground's openings record: every site-date Campsite Sniper detected turning available, logged and time-stamped. Refreshed hourly.
Openings · last 30 days
6
Openings · last 90 days
6
Only 6 openings in the last 90 days: not enough recent activity for a reliable pattern. A free Campsite Sniper alert watches around the clock instead, and pings you the moment one opens.
02 · Availability Outlook · Sep 18 – Dec 1, 2026 · of 28 monitored sites
Of the 1,950 tracked site-nights (Sep 18 – Dec 1, 2026): 1,350 open for online reservation · 463 reserved · 75 closed · 62 unavailable (cause unspecified).
Where the open windows are
30.8% of tracked site-nights are not currently open for online reservation. 1,350 of 1,950 remain open; here is where they are.
Load status
Sep 18 – Dec 1, 2026Not open online30.8%
Open site-nights1,350 / 1,950
Reserved (of online inventory)463 / 1,813
Weekday openings972
Weekend openings378
Of the open site-nights on mapped sites, 972 fall on weekdays and 378 on weekends (Fri–Sun).
Open dates by month
Sep 2026 – Dec 2026November holds the most room. 629 of 780 site-nights are still open there.
Holiday windows
Sites open per night · of 26 sites| Window | Night | Sites open | Status |
|---|---|---|---|
| Labor Day | SAT Sep 5 | 0 | None open |
| SUN Sep 6 | 0 | None open | |
| MON Sep 7 | 0 | None open | |
| Thanksgiving | THU Nov 26 | 21 | Open |
| FRI Nov 27 | 16 | Open | |
| SAT Nov 28 | 17 | Open | |
| Christmas | THU Dec 24 | 0 | None open |
| FRI Dec 25 | 0 | None open | |
| New Year | THU Dec 31 | 0 | None open |
Labor Day: no online availability on any tracked night. Thanksgiving: 15 sites are available for the complete three-night stay. Christmas: no online availability on any tracked night. New Year: no online availability on Thursday.
Best-availability sites
Most open site-nights · tracked window| Site | Open site-nights |
|---|---|
| 035/036 | 64 |
| 028 | 62 |
| 017 | 61 |
| 003 | 60 |
| 030 | 59 |
The 5 sites with the most open site-nights in the current snapshot. Pair a bookable date with a free alert to cover everything else.
Next windows
As of Sep 18, 2026 snapshotNext open dateTue · Sep 22
Next open weekendFri · Sep 25
The next bookable night is Sep 22; the first open weekend starts Sep 25. Campsite Sniper can watch later dates for you.
Stays and site detail
1,350 open site-nights across 25 sites at Observatory Campground, from the same hourly snapshot as everything above.
Multi-night stays. 207 2-night, 201 3-night, 38 7-night openings where a single site is free for every night, per Campsite Sniper's current snapshot — soonest Sep 22 at site 041/042.
RV length. Longest recorded site here is 35 ft. 4 sites take 25 ft, 3 sites take 35 ft.
All 25 sites with current availability
| Site | Max RV | Hookups | Open site-nights | Longest run | Dates |
|---|---|---|---|---|---|
| 035/036 | 12 ft | None | 64 | 39 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3, Oct 4, Oct 5 +52 more |
| 028 | 20 ft | None | 62 | 38 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 5, Oct 6, Oct 7, Oct 8 +50 more |
| 017 | 15 ft | None | 61 | 37 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +49 more |
| 003 | 12 ft | None | 60 | 31 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 3, Oct 4, Oct 5 +48 more |
| 030 | 20 ft | None | 59 | 24 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +47 more |
| 001/002 | 12 ft | None | 58 | 17 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +46 more |
| 011 | 12 ft | None | 57 | 24 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +45 more |
| 033 | 15 ft | None | 56 | 21 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 5, Oct 6, Oct 7 +44 more |
| 005 | 12 ft | None | 55 | 24 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 5, Oct 6, Oct 7, Oct 8 +43 more |
| 006 | 12 ft | None | 55 | 25 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +43 more |
| 008 | 12 ft | None | 54 | 24 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 4, Oct 5, Oct 6 +42 more |
| 021/022 | 15 ft | None | 54 | 15 nights | Sep 22, Sep 23, Sep 24, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11, Oct 12 +42 more |
| 024 | 15 ft | None | 54 | 12 nights | Sep 22, Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +42 more |
| 031/032 | 20 ft | None | 54 | 17 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 5, Oct 6, Oct 7, Oct 8, Oct 13 +42 more |
| 037/038 | 30 ft | None | 54 | 6 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +42 more |
| 010 | 12 ft | None | 52 | 10 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +40 more |
| 025 | 15 ft | None | 52 | 7 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7 +40 more |
| 026 | 15 ft | None | 51 | 7 nights | Sep 22, Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 5, Oct 6, Oct 7, Oct 8, Oct 11 +39 more |
| 039 | 35 ft | None | 51 | 13 nights | Sep 22, Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 11, Oct 12 +39 more |
| 040 | 35 ft | None | 51 | 13 nights | Sep 22, Sep 23, Sep 24, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +39 more |
| 041/042 | 35 ft | None | 50 | 7 nights | Sep 22, Sep 23, Sep 24, Sep 25, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6 +38 more |
| 013 | 12 ft | None | 49 | 20 nights | Sep 22, Sep 23, Sep 24, Sep 27, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8, Oct 13, Oct 14, Oct 15 +37 more |
| 009 | 12 ft | None | 48 | 12 nights | Sep 22, Sep 23, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 4, Oct 5, Oct 6, Oct 7, Oct 8 +36 more |
| 029 | 20 ft | None | 46 | 6 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 2, Oct 4, Oct 5, Oct 6 +34 more |
| 034 | 20 ft | None | 43 | 5 nights | Sep 22, Sep 23, Sep 24, Sep 27, Sep 28, Sep 29, Sep 30, Oct 1, Oct 11, Oct 12, Oct 13, Oct 14 +31 more |
About Observatory Campground
Overview
Science buffs and families are drawn to Observatory Campground for its proximity to the Palomar Observatory, a world-class center of astronomy research operated by the California Institute of Technology. Just two miles from the observatory, the campground provides visitors with a unique learning experience in the great outdoors. The facility offers a variety of amenities for both tent and RV camping. Hiking, biking and picnicking can be found nearby.
Recreation
An exciting amateur astronomy project, Explore the Stars, occurs at the campground on several weekends each summer. A group of amateur astronomers from all across Southern California shares the beauty and awe of the night sky to more than a hundred non-astronomers at the campground. Visitors can also walk a 2.25-mile trail to the observatory itself.
Day hiking, biking, picnicking and scenic driving are available in the area. The campground makes a good base camp for visiting Palomar Mountain State Park and exploring the surrounding forest.
Facilities
The campground is organized around one large loop with parking spurs for each campsite. Several sites are equipped with level cement pads to allow campers to set up their telescopes. The sites can accommodate vehicles up to 32 feet in length.
Drinking water, coin-operated showers (peak season only), grills, trash cans, campfire rings, picnic tables, a flush toilet (peak season only) and two vault toilets are provided.
Natural Features
The campground sits at an elevation of 4,800 feet in the Palomar Mountains of Southern California. The site is forested with pine and oak trees, though several sites have been cleared to allow campers a wide view of the night sky.
Nearby Attractions
The campground is adjacent to Palomar Mountain State Park and under a two-hour drive from San Diego, California. A general store with basic necessities is down the road.
28 monitored sitesRVs up to 35 ftNo hookups25 shadedPets OKFire pitsMax party 15
Getting there
The closest address to the campground is 35899 Canfield Road, Palomar Mountain, California. The campground is about 2 miles north of this address along Canfield Road. From Los Angeles, California, drive south on I-15 to State Highway 76. Go east on 76 for approximately 20 miles and turn left onto South Grade Road (County Road S6). Follow to the top of Palomar Mountain. Once at the top, turn left to continue on South Grade Road/Canfield Road. Continue for approximately 2.5 miles and turn right into the campground.
S6, Palomar Mountain, CA760-788-0250
CampingDay Use AreaHiking
View on Recreation.gov ↗ Get directions ↗
03 · Field Photos · roll CS-233300 · facility
Photo gallery
Roll CS-233300 · Observatory Campground · Palomar Mountain CA7 frames · facility
FAQ
How do I get a reservation at Observatory Campground?
Reservations for Observatory Campground are made through Recreation.gov. 1,350 of 1,950 tracked site-nights are currently open (69.2%). Campsite Sniper has also detected 6 site openings here in the last 90 days, so further dates may appear. Pick a site on the map to see its calendar, or set a free Campsite Sniper alert. You complete the reservation yourself on Recreation.gov.
Does Campsite Sniper book this campground for me?
No. Campsite Sniper sends alerts and direct Recreation.gov links. It never books, pays for, holds, hoards, or resells reservations.
How current is this availability data?
Campsite Sniper re-checks public Recreation.gov availability for this facility every hour and republishes whenever anything changes. This facility's data last changed at Sep 18, 2026 16:19 UTC; an older timestamp means nothing has changed since that time, not that checking stopped. Always confirm final availability on Recreation.gov when you book.
How often do new openings appear at Observatory Campground?
Campsite Sniper detected 4 site-date openings at Observatory Campground in the last 7 days, 6 over 30 days and 6 over the last 90.
Can I get a multi-night stay at Observatory Campground?
201 three-night openings are showing, counting only runs where the SAME site is free for all three nights. The soonest starts Sep 22 at site 041/042. Confirm and book on Recreation.gov.
Which sites at Observatory Campground fit a 35-foot RV?
3 of the 26 sites that support RV analysis have a recorded maximum of 35 ft or more; the longest recorded is 35 ft.
Which month has the most availability at Observatory Campground?
November 2026, with 629 open site-nights in the current snapshot of 780.
When is the next open date at Observatory Campground?
As of the Sep 18, 2026 snapshot: the next open date is Tue, Sep 22 and the next open weekend starts Fri, Sep 25. Detected openings can add earlier dates at any time; a free Campsite Sniper alert catches those the moment they appear.
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