Ontario barometric pressure forecast
Toronto area
Updated Nov 12, 5:25 a.m. 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 · Toronto
Watch for
Slightly low pressure
Cloudy
8/1℃7°C swing
Pressure MildLow 1007 hPa(100.7 kPa)
Drop
-2 hPa
-0.2 kPa
Humidity
77%
Chance of rain
59%
Highest pressure
1010 hPa
101.0 kPa
Pressure will be a bit low. If you're prone to headaches, try to keep your sleep and meal times regular.
Details (what to watch, 3-hour table)
- · Pressure slightly low (low of 1007 hPa / 100.7 kPa). If you're sensitive, you may notice the change.
| Time | Weather | Temp | Humidity | PressurehPa / kPa |
|---|---|---|---|---|
| 12 AM | Cloudy51% | 7℃ | 91% | 1009100.9 |
| 3 AM | Cloudy34% | 6℃ | 88% | 1008100.8 |
| 6 AM | Cloudy | 6℃ | 85% | 1008100.8 |
| 9 AM | Cloudy | 5℃ | 72% | 1007100.7 |
| 12 PM | Cloudy | 5℃ | 70% | 1007100.7 |
| 3 PM | Cloudy | 7℃ | 65% | 1007100.7 |
| 6 PM | Sunny | 3℃ | 74% | 1008100.8 |
| 9 PM | Mostly sunny | 1℃ | 79% | 1009100.9 |
Toronto on Thu 11/12: Cloudy. High 8℃, low 1℃. Avg. humidity 77%. Chance of rain up to 59%. Pressure 1007–1010 hPa (101.0 kPa) (outlook: Mild).
Tomorrow Fri 11/13 · Toronto
Little change in weather
Cloudy
No major weather triggers stand out. If you get a headache, log it. Over time, this can show causes other than weather (sleep, food, stress).
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 · Toronto
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 · TorontoGuide
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 · TorontoGuide
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 · TorontoGuide
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 · TorontoGuide
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 Canada
Real-time headache map
Open the full real-time headache map
Now (6 AM ET)
Canada: not enough reports yet
Your location is used on your device only to find your province or territory. It isn't sent or saved.
Nearby (Central Canada)
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 Toronto today?
On Thursday, November 12, barometric pressure in Toronto, Ontario is forecast to range from 1007 hPa (100.7 kPa) to 1010 hPa (101.0 kPa). Zutsu Note rates today's pressure in Ontario as Mild, based on the day's lowest pressure and the biggest change within 6 hours.
Will the barometric pressure change much in Toronto today?
Somewhat. Pressure in Toronto is forecast to rise by up to 3 hPa (0.3 kPa) within 6 hours today. A change this size is rated Mild on this page. Over the whole day, pressure falls by up to 2 hPa (0.2 kPa) and rises by up to 3 hPa (0.3 kPa).
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 or GP.
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.