Cities with Greatest Rise in Barometric Pressure

The following list ranks the biggest increases in barometric pressure today observed amongst our tracked cities. This is determined by finding the widest range between the highest and lowest pressures during the 24-hour period starting and ending at midnight, UTC−08:00 (Pacific Standard Time) in each city and choosing the cities where the time of the lowest pressure occurs before the time of the highest pressure.

Because each reading represents a 24-hour window of an hourly weather forecast, from 8 am today through 8 am tomorrow (local time), it is possible that the entirety of the pressure range is not captured in the data. In this case, the green inverted triangle () indicates that the lowest pressure observed during this period was at the start, meaning that the pressure had likely risen from a lower low. Conversely, the red triangle () indicates that the highest pressure observed during this period is at the end, meaning that the pressure will likely rise beyond the upper end of the range observed. Therefore, green and/or red triangles indicate that the total rise is likely to be greater than the amount displayed.

#CityIncreaseLow TimeHigh TimeRate
1Ottawa, Canada1.04 inHg7 pm7 am tomorrow0.087 inHg/hr
2Buffalo, New York0.95 inHg6 pm7 am tomorrow0.073 inHg/hr
3Cleveland, Ohio0.94 inHg4 pm7 am tomorrow0.063 inHg/hr
4Rochester, New York0.91 inHg7 pm7 am tomorrow0.076 inHg/hr
5Pittsburgh, Pennsylvania0.9 inHg5 pm7 am tomorrow0.064 inHg/hr
6Toronto, Canada0.9 inHg10 am7 am tomorrow0.043 inHg/hr
7Detroit, Michigan0.89 inHg3 pm7 am tomorrow0.056 inHg/hr
8Milwaukee, Wisconsin0.83 inHg8 am7 am tomorrow0.036 inHg/hr
9Grand Rapids, Michigan0.82 inHg8 am7 am tomorrow0.036 inHg/hr
10Washington, District of Columbia0.8 inHg10 pm7 am tomorrow0.089 inHg/hr
11Baltimore, Maryland0.79 inHg10 pm7 am tomorrow0.088 inHg/hr
12Columbus, Ohio0.78 inHg3 pm7 am tomorrow0.049 inHg/hr
13Chicago, Illinois0.76 inHg10 am7 am tomorrow0.036 inHg/hr
14Indianapolis, Indiana0.76 inHg12 pm7 am tomorrow0.040 inHg/hr
15Amsterdam, The Netherlands0.76 inHg8 am7 am tomorrow0.033 inHg/hr
16Hamburg, Germany0.7 inHg8 am7 am tomorrow0.030 inHg/hr
17Cincinnati, Ohio0.69 inHg2 pm7 am tomorrow0.041 inHg/hr
18Des Moines, Iowa0.66 inHg8 am3 am tomorrow0.035 inHg/hr
19Leeds, United Kingdom0.64 inHg8 am7 am tomorrow0.028 inHg/hr
20Minneapolis, Minnesota0.64 inHg8 am10 pm0.046 inHg/hr
= rise began before recorded 24-hour period (8 am today)
= rise continues beyond recorded 24-hour period (8 am tomorrow)

The change and rate of change of barometric pressure is perhaps more important than the actual numerical value of pressure. This is why many digital barometric pressure displays show a numerical pressure reading accompanied by an indication of whether the pressure has been “rising” or “falling”. To weather forecasters, increasing barometric pressure is a signal of the arrival of a high-pressure system, which is generally associated with clear skies, calm winds, and lower humidity levels.

To folks who experience arthritis, migraines, or other physical conditions that are sensitive to pressure changes, rising pressure typically feels better than falling pressure, though changes in pressure affect people differently, and stable pressure is generally preferred to larger or more rapid changes in pressure.