ISS Passes Over Houston

Next ISS Pass Over Houston

Loading a forecast, not a live observation.

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A Houston city label does not identify the observer by itself

PocketWorld calculates this table for the IAH-linked coordinates printed below. It does not choose downtown Houston, a NASA facility or your phone's position automatically. When another tool asks you to select Houston, inspect the resulting observer coordinates before comparing its schedule with this page. A city-name match is not evidence that the two calculations used the same point. The IAH reference is a data input, not a suggested viewing site.

Keep the observer altitude input with those coordinates. This page uses zero metres as an existing calculation setting; it does not measure your viewing elevation. The globe button provides orbital context and does not update the table's fixed inputs. Moving the map towards another part of Houston therefore does not produce a neighbourhood-specific forecast.

Compare a Houston viewing segment, not an entire orbit

Read the predicted start and end alongside the source's separate visible-duration field. A short visible segment must not be stretched to the full elapsed window, and a pass near Houston on the map must not be converted into a sighting time. The initial compass direction and maximum elevation help describe the prediction; neither field surveys the buildings or trees at an actual observing location.

The Boston guide uses another observer and explains a separate East Coast comparison. Do not copy its clock time or direction into a Houston reminder. NASA's location-specific app displays local time for its chosen observer, while this table retains UTC. Convert the date as well as the hour for a Houston reminder, then keep the original UTC row so the comparison remains checkable.

Use Houston / Galveston weather as a separate check

The National Weather Service link below opens the Houston / Galveston regional resource, not a guarantee of conditions across the metropolitan area. Choose the intended observing location and valid hour there. A current condition at one place and a forecast for a later pass are not interchangeable. Local weather information does not change the orbital prediction, and the ISS table does not assess whether a location is suitable or safe for observing.

If the forecast fails, no reliable Houston schedule was obtained; it does not mean that the station has stopped passing the region. If a successful request returns no qualifying rows, that applies to the stated IAH observer, request window and duration filter. Save any partial, expired or unavailable notice rather than sharing an old countdown as a newly issued alert. Use the independent NASA resource for another location-specific check instead of inventing a replacement pass.

Observer settings and forecast scope

Reference: IAH, Houston, USA. Latitude 29.9902°, longitude -95.3368°. Observer altitude input: 0 metres. This fixed input is not a measurement of the city's elevation or your location. The request asks N2YO for up to 10 days of visual passes with a minimum visible duration of 60 seconds. Results can be cached for up to one hour; the retrieval timestamp is shown with the table.

All table dates and times are UTC, not automatically converted to your local time zone. Keep the date when converting. The countdown depends on your device clock. A predicted start and end describe a pass window; the separately reported visible duration can be shorter. Maximum elevation is an angle above the horizon. An unknown magnitude is not a prediction of a faint pass.

When the table cannot answer your question

Read the status message before relying on the countdown. A partial list contains only the source entries that passed validation. An unavailable result provides no reliable schedule at all. The page makes one bounded request rather than repeatedly contacting the provider in the background. If loading fails, reloading makes another attempt; the source links below remain usable independently of that request. Closing or leaving the page stops its countdown timer.

Seeing the ISS from Houston

A forecast is not proof of visibility from your position. Sunlight on the station, a sufficiently dark sky, cloud and your local horizon all matter. The globe's position marker is not a confirmed sighting.

Observation and forecast sources

• NASA Spot the Station — an independent location-specific observation resource, not the source of this table.
• NASA Spot the Station FAQ — visibility and prediction fields.
• N2YO API documentation — forecast data, observer inputs and field definitions.
• National Weather Service: Houston / Galveston — select your US observing location and forecast valid time for a separate sky-condition check.