Barometric Pressure
Forecast Tool
Search a city to explore expected sea-level pressure across Today, the next 72 hours, 7 days, or the full 16-day outlook. Compare hourly values and daily ranges, then revisit the forecast as your plans get closer.
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Start with a city search or use your location to load the 16-day pressure forecast.
New York, United States
Current sea-level pressure
Pressure Outlook
Daily average sea-level pressure.
Daily Detail
Compare each day’s forecast maximum, minimum, average, and change. The average is calculated from the available hourly values; Change compares it with the previous day’s average. The first row has no previous day for comparison. These are calendar-day summaries, not just the points sampled in the 72-hour chart.
| Day | Maximum | Minimum | Average | Change |
|---|---|---|---|---|
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Read The Curve
Use Today for the remaining hourly values and 72 Hours for points sampled every six hours. The 7-day and 16-day views show daily averages. Their trend summarizes the beginning and end, so also look for changes in between. All values are forecasts, not future observations or guaranteed weather outcomes.
Use The Range
The shaded range spans each day’s lowest and highest available hourly forecast values. It is not a confidence interval or an ensemble uncertainty band. Two days can have the same average but different ranges; check the hourly view when the timing of a change matters.
Current Reading
Use Today for the current weather-provider pressure value, its comparison with the standard reference, and a simpler 7-day graph. Stay here for the longer forecast and its daily detail.
Download
The app combines Today, 72-hour, 7-day, and 16-day forecasts with offline sensor readings, history, alerts, notes, widgets, and export data.
Uncertainty generally increases with forecast lead time because errors in starting conditions and model approximations grow. Treat the later days as an outlook, not an exact appointment for a pressure change. Refresh the forecast as the date approaches; this chart does not calculate a probability or confidence score. ECMWF explains forecast uncertainty.
Sea-level pressure adjusts for elevation, making forecast values easier to compare between locations and with standard weather maps. A device’s local sensor reading can differ because it measures pressure at its actual altitude. For the distinction between adjusted values and the standard reference, read about normal, high, and low pressure.
No. A falling pressure trend can accompany an approaching weather system, but pressure is only one part of a forecast. Use the curve alongside the wider weather forecast and local conditions.