Weather24Barometric pressure in Philadelphia today: right now
Right now in Philadelphia the barometric pressure is 29.94 inHg (1014 hPa): normal, falling over the last 3 hours (−0.06 inHg). This time yesterday: 30.19 inHg; tomorrow the model expects 29.88 inHg.
In 24 hours the pressure has changed by −0.25 inHg — a big swing. These are the changes weather-sensitive people tend to notice most.
normal · 1014 hPa, as in forecasts
1012 hPa · at about 60 ft, unadjusted
low: today at 3 AM · high: Sunday 11/1 at 9 AM
Data for 3 AM local time. The first value is reduced to sea level; the barometer value is the pressure at the city’s height.
In the Weather24 app
How will the pressure affect you today?
Meteo-sensitivity from 0 to 10, hour by hour, and the “Rapid pressure drop” warning.
Pressure in Philadelphia: the past week and tomorrow
Hour by hour, at sea level, in inHg. Left of the amber line is the past 7 days, right of it the forecast.
- Sea-level pressure
- Standard, 29.92 inHg
- Now, 3 AM
- Forecast
- Biggest 24-hour change
- Now
- 29.94 inHgnormal
- Tomorrow, same time
- 29.88 inHg−0.06 inHg from now
- Biggest 24-hour change this week
- +0.40 inHgto Saturday 10/31 at 11 AM
Philadelphia between the coast and the Appalachians
Philadelphia gets weather from two directions: fronts from the west over the Appalachians and coastal storms from the Atlantic. Coastal lows bring the larger pressure drops, especially in winter; fronts from the west usually bring a smaller dip and a clear rise behind them.
Sea level or barometer: 29.94 inHg and 29.88 inHg in Philadelphia
The model point for Philadelphia is at about 60 ft, so here the two numbers are close. Pressure drops by about 0.1 inHg every 90 feet of height.
In the Weather24 app you choose which one to see under “Pressure reference”: Local, the default, shows a value close to a barometer’s; Sea level shows the forecast value used on this page.
Pressure swings in Philadelphia and how you feel
Weather-sensitive people usually notice changes in pressure — especially a fast fall ahead of a front — more than the value itself. That is why it helps to watch the change over the last 3 hours and the last 24.
More in migraine and arthritis weather forecast.
This is weather information, not medical advice. If your symptoms are severe or new, talk to your doctor.
Barometric pressure in Philadelphia in the Weather24 app
The “Pressure” card with the reading and level where you are, the “Pressure over the day” chart with the standard-pressure line, the “Pressure” map layer with highs and lows, the “Rapid pressure drop” warning card and “Meteo-sensitivity”: a 0–10 score, hour by hour, with the reasons — pressure change, humidity, wind, temperature swings.
Barometric pressure in Philadelphia: FAQ
What is the barometric pressure in Philadelphia today?
What does a barometer read in Philadelphia?
Is the air pressure in Philadelphia high or low today?
What will the pressure be in Philadelphia tomorrow?
Where does the data come from?
Pressure in other cities
See also: rain radar Philadelphia · lightning map · UV index Philadelphia