What Is the Barometric Pressure Today? How to Check and What It Means
Barometric pressure is one of those invisible forces that shapes both the weather and how your body feels — yet most people never think to check it. If you're weather-sensitive, knowing today's barometric pressure reading could be the difference between a productive day and being sidelined by a headache.
Here's everything you need to know about checking barometric pressure today, understanding the readings, and using that information for your health.
What Is Barometric Pressure?
Barometric pressure — also called atmospheric pressure — is the force exerted by the weight of the atmosphere on any surface. It's essentially a measure of how much air is pressing down on you right now.
The standard sea-level reading is 1013.25 hPa (hectopascals), also expressed as 29.92 inHg (inches of mercury). Readings vary based on your location, altitude, and current weather conditions.
How to Check Today's Barometric Pressure
There are several ways to find today's barometric pressure reading:
1. A Dedicated Weather App
Most modern weather apps display barometric pressure in their detailed conditions view. Look for a section labeled "Pressure" in the hourly or current conditions tab.
2. Your Phone's Built-In Barometer
Many smartphones (particularly iPhones from the iPhone 6 onward, and many Android flagships) contain a built-in barometric sensor. Apps like Pressure Pal use this sensor to show you real-time, hyper-local pressure readings — far more accurate than a general weather station that might be miles away.
3. A Physical Barometer
Traditional barometers — either mercury or aneroid — give accurate local readings. They're also useful because they show you how pressure is trending over time, which is often more important than the absolute number.
4. Weather Websites
Sites like Weather.gov (U.S.), Weather.com, or AccuWeather include current pressure in the "Local Conditions" or "Detailed Forecast" sections.
What's a Normal Barometric Pressure Reading?
Readings fall into a few broad zones:
| Reading (hPa) | What It Means |
|---|---|
| Above 1020 hPa | High pressure — typically clear, calm weather |
| 1013–1020 hPa | Normal range — stable, fair weather likely |
| 1000–1013 hPa | Low-normal — changing conditions, possible clouds |
| Below 1000 hPa | Low pressure — stormy weather, potential rain or wind |
| Below 980 hPa | Very low — severe weather or storm conditions |
Keep in mind that altitude affects your baseline. At higher elevations, "normal" pressure is lower. A reading of 840 hPa is completely normal in Denver; at sea level, it would indicate a catastrophic storm.
Is Pressure Rising or Falling Today?
The trend matters as much as the current number. Here's why:
- Rising pressure typically means improving weather — clearing skies, calmer conditions.
- Falling pressure typically signals deteriorating conditions — clouds, rain, or storms moving in.
- Rapid drops (more than 5–8 hPa in 24 hours) are the most likely to trigger weather-related headaches and migraines in sensitive people.
If today's pressure is falling, especially quickly, that's your alert to take preventive action if you're prone to weather headaches.
What Today's Reading Means for Your Health
High Pressure Days (Above ~1013 hPa)
Most weather-sensitive people feel their best on high-pressure days. The air is stable, skies tend to be clear, and pressure changes are minimal.
Falling Pressure Days
This is when to be on guard. A barometric pressure headache is most likely to develop when pressure is dropping — particularly in the 6–24 hours before a storm front arrives. Symptoms may include:
- Dull pressure or throbbing across the forehead
- Sinus fullness or congestion
- Increased light and sound sensitivity
- Fatigue or mood changes
Low-Pressure Days
If pressure is already low (storm is present), many people have already developed symptoms or are past the worst of the trigger window. Some people feel relief once the storm actually arrives.
Rising Pressure (After a Storm)
For some individuals, rapid rises after a storm can also trigger symptoms, though this is less common than falling-pressure triggers.
How to Use Today's Pressure Reading
Step 1: Check the reading. Note whether it's in the high, normal, or low range.
Step 2: Look at the trend. Is it rising, falling, or stable? Apps like Pressure Pal show a 24-hour chart so you can see the direction and rate of change at a glance.
Step 3: Cross-reference with your history. Over time, you'll learn your personal threshold — the pressure level or rate of change that tends to trigger your symptoms.
Step 4: Take action. If pressure is dropping rapidly and you know that's your trigger zone, act preemptively:
- Increase hydration
- Avoid other known triggers (bright lights, skipping meals, stress)
- Take prescribed abortive medication at the first prodrome sign
- Plan for a lighter activity load if possible
Tracking Pressure Over Time
Knowing today's barometric pressure is useful. Knowing your personal pressure history is transformative.
Pressure Pal logs both your symptoms and local barometric pressure readings together, so you can see exactly which pressure conditions correlate with your headaches. Over weeks and months, patterns emerge that help you forecast your own risk — not just today's weather, but your body's response to it.
The app also sends proactive alerts when pressure is entering your risk zone, so you don't have to remember to check manually.
Key Takeaways
- Today's barometric pressure can be checked through weather apps, your phone's built-in sensor, or a dedicated app like Pressure Pal.
- 1013.25 hPa is standard sea-level normal; readings above 1020 are high pressure, below 1000 signal low-pressure weather.
- The trend (rising vs. falling) is often more important than the absolute number for health purposes.
- Rapid pressure drops of 5–8+ hPa in 24 hours are most associated with weather-triggered headaches.
- Tracking pressure alongside your symptoms over time reveals your personal sensitivity patterns.
You're now equipped to check the pressure today — and more importantly, to understand what it means for how you're going to feel.