Pennsylvania barometric pressure forecast
Philadelphia area
Updated Nov 12, 5:20 AM EST · four times a day
Reviewed byHirotaka Maekawa, MD (headache specialist in Japan)See pressure changes for tomorrow and beyond in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Weather and pressure for the week
Today Thu 11/12 · Philadelphia
Watch for
Pressure drop · Temperature swing · High humidity
Cloudy
64/50°F14°F swing
Pressure CautionLow 995 hPa(29.38 inHg)
Drop
-13 hPa
-0.38 inHg
Humidity
85%
Chance of rain
71%
Highest pressure
1008 hPa
29.77 inHg
Pressure will be on the low side. If pressure changes tend to bring on your headaches, leave extra time in your plans, take frequent breaks, and stay hydrated. Take it especially easy when pressure falls 13 hPa (0.38 inHg) during the day.
Details (what to watch, 3-hour table)
- · Pressure on the low side (low of 995 hPa / 29.38 inHg). If pressure drops tend to bring on your headaches, take care when it falls 13 hPa (0.38 inHg) during the day.
- · Temperatures vary by 14°F during the day. If temperature swings tend to bring on your headaches, dress for the change.
- · High humidity (avg. 85%). If muggy weather tends to bring on your headaches, try dehumidifying and staying hydrated.
| Time | Weather | Temp | Humidity | PressurehPa / inHg |
|---|---|---|---|---|
| 12 AM | Sunny | 52°F | 73% | 100829.76 |
| 3 AM | Sunny | 51°F | 87% | 100529.68 |
| 6 AM | Cloudy | 50°F | 91% | 100429.65 |
| 9 AM | Cloudy | 56°F | 85% | 100229.58 |
| 12 PM | Cloudy46% | 62°F | 79% | 99729.45 |
| 3 PM | Mostly sunny50% | 64°F | 73% | 99529.39 |
| 6 PM | Cloudy | 58°F | 88% | 99529.39 |
| 9 PM | Cloudy | 53°F | 96% | 99529.39 |
Philadelphia on Thu 11/12: Cloudy. High 64°F, low 50°F. Avg. humidity 85%. Chance of rain up to 71%. Pressure 995–1008 hPa (29.77 inHg) (outlook: Caution). Pressure may drop up to 13 hPa (0.38 inHg) during the day.
Tomorrow Fri 11/13 · Philadelphia
Watch for
Low pressure · High humidity · Rain
Drizzle
Pressure will be on the low side. If pressure changes tend to bring on your headaches, leave extra time in your plans, take frequent breaks, and stay hydrated.
Tomorrow: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Day after tomorrow Sat 11/14 · Philadelphia
Day after tomorrow: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Sun Sun 11/15 · PhiladelphiaGuide
Sun: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Mon Mon 11/16 · PhiladelphiaGuide
Mon: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Tue Tue 11/17 · PhiladelphiaGuide
Tue: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Wed Wed 11/18 · PhiladelphiaGuide
Wed: see the pressure trend in Zutsu Note
Free hourly pressure forecasts for where you are, up to a week ahead.
Zutsu Note is a free headache diary app from Japan ("zutsu" is Japanese for "headache").
Today across the US
Real-time headache map
Open the full real-time headache map
Now (6 AM ET)
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Nearby states (Northeast)
Reviewed byHirotaka Maekawa, MD
Neurologist and headache specialist in Japan
Trained in the Department of Neurology at The University of Tokyo before focusing fully on headache care. Visiting Lecturer at Showa Medical University. Developer of the headache diary app Zutsu Note.
Headache diary app from Japan. "Zutsu" is Japanese for "headache."
- Pressure forecast for where you are
- Log your headaches, too
- Free to use
Frequently asked questions
What is the barometric pressure in Philadelphia today?
On Thursday, November 12, barometric pressure in Philadelphia, Pennsylvania is forecast to range from 995 hPa (29.38 inHg) to 1008 hPa (29.77 inHg). Zutsu Note rates today's pressure in Pennsylvania as Caution, based on the day's lowest pressure and the biggest change within 6 hours.
Will the barometric pressure change much in Philadelphia today?
Yes. Pressure in Philadelphia is forecast to fall by up to 7 hPa (0.21 inHg) within 6 hours today. A change this size is rated Caution on this page. Over the whole day, pressure falls by up to 13 hPa (0.38 inHg) and rises by up to 1 hPa (0.03 inHg).
Can a drop in barometric pressure cause a headache?
In some people, yes. In studies, about half of people with migraine say weather is one of their triggers. The exact mechanism isn't known. One leading idea is that the inner ear senses the change in pressure and the autonomic nervous system responds. Sensitivity varies a lot: the same weather change can bring on a headache in one person and not in another.
How can I tell if pressure changes trigger my headaches?
Keep a headache diary for 1 to 2 months and compare it with the pressure on each day. Zutsu Note, a free headache diary app built by a headache specialist, puts your logs and the pressure on the same chart automatically and shows the hourly pressure forecast for where you are, up to a week ahead. If your headaches keep coming back, get worse, or feel different from usual, talk to your doctor.
Learn more in our guide: Barometric pressure and headaches
The rating comes from the day's lowest pressure and the biggest change within 6 hours. It describes the weather, not your headache, and does not replace advice from your doctor. Forecast data: Open-Meteo.