Illinois barometric pressure forecast
Chicago area
Updated Nov 12, 4:20 AM CST · 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 · Chicago
Watch for
Pressure change · High humidity
Cloudy
45/36°F9°F swing
Pressure StableLow 1010 hPa(29.83 inHg)
Drop
-1 hPa
-0.03 inHg
Humidity
82%
Chance of rain
55%
Highest pressure
1016 hPa
30.00 inHg
Humidity will be high. If muggy weather tends to bring on your headaches, try dehumidifying indoors and staying hydrated.
Details (what to watch, 3-hour table)
- · High humidity (avg. 82%). If muggy weather tends to bring on your headaches, try dehumidifying and staying hydrated.
| Time | Weather | Temp | Humidity | PressurehPa / inHg |
|---|---|---|---|---|
| 12 AM | Sunny | 44°F | 81% | 101029.83 |
| 3 AM | Sunny | 42°F | 87% | 101029.83 |
| 6 AM | Sunny | 38°F | 87% | 101129.86 |
| 9 AM | Cloudy | 40°F | 85% | 101329.90 |
| 12 PM | Cloudy | 43°F | 80% | 101329.91 |
| 3 PM | Cloudy | 42°F | 77% | 101329.91 |
| 6 PM | Cloudy | 38°F | 74% | 101429.95 |
| 9 PM | Cloudy43% | 37°F | 81% | 101529.97 |
Chicago on Thu 11/12: Cloudy. High 45°F, low 36°F. Avg. humidity 82%. Chance of rain up to 55%. Pressure 1010–1016 hPa (30.00 inHg) (outlook: Stable).
Tomorrow Fri 11/13 · Chicago
Watch for
Pressure rise · High humidity · Rain
Snow
Pressure will rise for part of the day (3 hPa / 0.09 inHg over 6 hours). If you're prone to headaches, try to keep your sleep and meal times regular.
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 · Chicago
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 · ChicagoGuide
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 · ChicagoGuide
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 · ChicagoGuide
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 · ChicagoGuide
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 (7 AM ET)
US: not enough reports yet
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Nearby states (Midwest)
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 Chicago today?
On Thursday, November 12, barometric pressure in Chicago, Illinois is forecast to range from 1010 hPa (29.83 inHg) to 1016 hPa (30.00 inHg). Zutsu Note rates today's pressure in Illinois as Stable, based on the day's lowest pressure and the biggest change within 6 hours.
Will the barometric pressure change much in Chicago today?
Not much. The biggest change within 6 hours today is 2 hPa (0.06 inHg), below the 3 hPa (0.09 inHg) that this page rates as Mild. Over the whole day, pressure falls by up to 1 hPa (0.03 inHg) and rises by up to 6 hPa (0.18 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.