156/160 observing locations currentCoverage details

Forecasts are withheld individually when their recorded expiry is reached; other independently current areas remain available.

National comparisons: Sunday night, September 13-14. Other current local nights remain available on their place pages and map.

Each place changes to its coming night at natural dawn. Next forecast renewal is due by 2026-09-14T07:02:05.147Z.

State forecasts are available for 46 of 50 states. The map includes 146 current forecast areas and withholds 4 unavailable areas. The next currently available identity expires at 2026-09-14T09:00:00.000Z.

Boston, MA — unavailable: The model could not support an observing window from the complete current-night inputs. No forecast score is published.
Billings, MT — unavailable: The model could not support an observing window from the complete current-night inputs. No forecast score is published.
Williston, ND — unavailable: The model could not support an observing window from the complete current-night inputs. No forecast score is published.
Newport, RI — unavailable: The model could not support an observing window from the complete current-night inputs. No forecast score is published.
Massachusetts — unavailable: This state forecast is unavailable because at least one of its three regional forecasts is withheld. See the affected region for its reason.
Montana — unavailable: This state forecast is unavailable because at least one of its three regional forecasts is withheld. See the affected region for its reason.
North Dakota — unavailable: This state forecast is unavailable because at least one of its three regional forecasts is withheld. See the affected region for its reason.
Rhode Island — unavailable: This state forecast is unavailable because at least one of its three regional forecasts is withheld. See the affected region for its reason.

Regional forecast · Not an observing destination

Seattle, WA

Sunday night, September 13-14

Recheck

Conditions: 61 · Borderline

Best window: Monday 12:30 AM PDT-Mon, 5:30 AM PDT
Main limiter: Cloud cover

Moderate confidence forecastOne weather source (NWS); independent agreement unavailable, so confidence is capped at moderate.

Issued Sep 14, 12:01 AM PDT

Forecast expires Sep 14, 5:10 AM PDT

Next step: Recheck local conditions before leaving; confirm a real site's access before making a travel plan.

Plan on mapSaves on this device.

Decision details and other actions

Seattle, WA is a borderline broad forecast zone during Sunday night, September 13-14. Compare other zones, then verify a real observing site instead of treating this centroid as a destination.

Forecast updated Sep 13

Single weather provider (NWS); independent agreement unavailable. Confidence is capped at medium. Confidence is medium.

View Washington forecast

How this score works

Score combines the supported cloud, Moon and darkness inputs available for this forecast scope.

Why this score

The practical factors behind tonight's decision

Cloud cover is the main limit on this window.

Planning note: Compare broad zones and verify a real site before making a travel decision.

Clouds: 64.5%

Moon interference during the decision window: 0%

Regional darkness proxy: Very high

Light-pollution impact is unavailable for this forecast zone.

How to use this forecast zone

Select and verify a real observing site before travel

Recheck broad clouds and moonlight before Monday 12:30 AM PDT-Mon, 5:30 AM PDT.
Choose a real public observing site inside the zone; this forecast centroid is not a destination.
Confirm legal access, parking, gate hours, road conditions, and your return route for that real site.
Use the state map to compare zones, then recheck local conditions before travel.

Planning beyond tonight

Longer-range regional guidance

A supported seven-night regional series is not available yet. Recheck each day as the next night enters the reliable forecast window.

How dark is it here?

Simple visibility context

Darkness is useful here, but tonight's forecast is limited by cloud cover.

Site darkness: Not assigned. Choose a real location before using a Bortle class.

Moon interference: 0% during the selected regional decision window

Forecast zone scope

Regional conditions only; this is not an access record

Use this zone to compare broad conditions, then choose a real public observing site. The forecast centroid does not provide legal access, parking, closing hours, or a safe arrival point.

Forecast confidence: Moderate confidence forecast

Forecast updated Sep 13

Generated: Monday, Sep 14, 2026, 7:01 AM UTC

Location trust: Trust details still being collected

Access notes: No additional structured access notes yet.

What this sample can tell you

Conditions only, not object visibility

This regional sample describes broad clouds, window-specific Moon interference, and dark-sky potential. It does not verify that a named object is above the horizon at this centroid.

Check verified What Can I See results

What to bring tonight

Keep the setup matched to conditions

Naked eye is enough for the main view.
Binoculars are optional.
Bring a red flashlight.
Dress warmer than the daytime temperature.
Check clouds again before leaving.

Event context for this forecast zone

Use event pages for timing, then choose and verify a real observing site

Plan around Milky Way season Compare meteor shower windows Browse verified astronomy events Open full event hub

Practical actions

Plan and share quickly

Open state map View state forecast Check tonight's forecast Check local Milky Way timing

Safety check: confirm legal access, parking, weather updates, and return route before leaving.

Read: choose a good public stargazing spot

Guides for choosing a real observing place

Use these to turn regional conditions into a verified site plan

First-Time Stargazing Guide What Light Pollution Is Why Moon Phase Matters Do I Need a Telescope?Open all guides