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Barometric pressure · Boston

Barometric pressure in Boston today: right now

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Right now in Boston the barometric pressure is 29.96 inHg (1015 hPa): normal, steady over the last 3 hours (−0.02 inHg). This time yesterday: 30.14 inHg; tomorrow the model expects 29.87 inHg.

Sea level 29.96 inHg

normal · 1015 hPa, as in forecasts

Barometer in Boston 29.92 inHg

1013 hPa · at about 30 ft, unadjusted

Past 7 days 29.89–30.51 inHg

low: Friday 10/30 at 1 PM · high: Sunday 11/1 at 8 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.

Meteo-sensitivity card in the app: 7.8 out of 10, pressure falling by 0.27 inHg

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 Boston: 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
29.83 30.12 30.42 ThuFriSatSunMonTueWedtodaytomorrow
29.83 30.12 30.42 ThuFriSatSunMonTuetoday
Now
29.96 inHgnormal
Tomorrow, same time
29.87 inHg−0.09 inHg from now
Biggest 24-hour change this week
+0.46 inHgto Saturday 10/31 at 12 PM
Only in Boston

Boston and “bomb cyclones”

Boston is often in the path of coastal storms that deepen quickly. Meteorologists call it bombogenesis when a storm’s central pressure falls very fast: by 24 hPa (about 0.71 inHg) in 24 hours at 60° latitude, and a little less at Boston’s latitude. Some nor’easters deepen this way off New England. In the city that shows up as a steep fall on the chart and a sharp rise afterwards.

Height of the model point 30 ft An unadjusted barometer here reads 29.92 inHg right now

Sea level or barometer: 29.96 inHg and 29.92 inHg in Boston

Sea level · as in forecasts 29.96 inHg 1015 hPa · used on this page
−0.04 inHgheight of 30 ft
Barometer in Boston 29.92 inHg 1013 hPa · unadjusted

The model point for Boston is at about 30 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 Boston 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.

Boston · last 24 hours −0.18 inHg Change since this time yesterday
Last 3 hours −0.02 inHg

Barometric pressure in Boston 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.

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Barometric pressure in Boston: FAQ

What is the barometric pressure in Boston today?
Right now in Boston the barometric pressure is 29.96 inHg (1015 hPa): normal, steady over the last 3 hours (−0.02 inHg). This time yesterday: 30.14 inHg; tomorrow the model expects 29.87 inHg. The value is reduced to sea level and updates every hour.
What does a barometer read in Boston?
The model point for Boston is at about 30 ft, so an unadjusted barometer reads about 29.92 inHg (1013 hPa) right now: 0.04 inHg less than the sea-level pressure (29.96 inHg). Forecasts give the second value so cities can be compared.
Is the air pressure in Boston high or low today?
At 29.96 inHg the pressure is normal (standard is 29.92 inHg). Over the past 7 days it ranged from 29.89 inHg to 30.51 inHg. How to read these numbers: barometric pressure today in the US.
What will the pressure be in Boston tomorrow?
At the same time tomorrow the model expects 29.87 inHg (−0.09 inHg from now). The hour-by-hour forecast is at the right end of the chart.
Where does the data come from?
From weather models via Open-Meteo (CC BY 4.0), hour by hour. These are model values for one point in the city, not readings from a particular station. Official observations and warnings in the US are published by the National Weather Service.