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
1Mexico City, Mexico0.54 inHg11 pm6 am tomorrow0.077 inHg/hr
2Bogota, Colombia0.41 inHg9 pm3 am tomorrow0.068 inHg/hr
3Addis Ababa, Ethiopia0.39 inHg1 pm5 am tomorrow0.024 inHg/hr
4Johannesburg, South Africa0.38 inHg2 pm6 am tomorrow0.024 inHg/hr
5Ho Chi Minh City, Vietnam0.35 inHg9 am4 pm0.050 inHg/hr
6Caracas, Venezuela0.35 inHg9 pm3 am tomorrow0.058 inHg/hr
7Lagos, Nigeria0.33 inHg4 pm7 am tomorrow0.022 inHg/hr
8Bangkok, Thailand0.32 inHg9 am3 am tomorrow0.018 inHg/hr
9Tucson, Arizona0.32 inHg11 pm6 am tomorrow0.046 inHg/hr
10St George, Utah0.32 inHg8 am4 pm0.040 inHg/hr
11Dhaka, Bangladesh0.32 inHg11 am3 am tomorrow0.020 inHg/hr
12Singapore, Singapore0.31 inHg9 am2 am tomorrow0.018 inHg/hr
13Kolkata, India0.31 inHg11 am4 pm0.062 inHg/hr
14Sacramento, California0.29 inHg10 am7 am tomorrow0.014 inHg/hr
15Adelaide, Australia0.29 inHg8 am7 am tomorrow0.013 inHg/hr
16Perth, Australia0.28 inHg8 am2 am tomorrow0.016 inHg/hr
17Asheville, North Carolina0.27 inHg8 am5 am tomorrow0.013 inHg/hr
18São Paulo, Brazil0.27 inHg5 pm1 am tomorrow0.034 inHg/hr
19Hanoi, Vietnam0.27 inHg9 am2 am tomorrow0.016 inHg/hr
20Greenville, South Carolina0.27 inHg8 am3 pm0.039 inHg/hr
Legend:
= 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.