Current Atmospheric Pressure in portland, united states of america
29.9 inHg / 1012.7 hPa
Atmospheric Pressure Forecast for portland, united states of america with chart
In the next 7 days, it is expected that the pressure, will be decreasing. The maximum pressure will reach 1021.5 hPa on 17 Sep 2025 at 11:00, and the minimum will be 1010.7 hPa on 22 Sep 2025 at 18:00. The average pressure during this period is 1016.03 hPa, which is classified as normal.
The average daily air pressure fluctuation is 4.46 hPa, which is moderate, indicating moderately variable barometric pressure in this region. The average daily pressure range is 4.46 hPa, which is narrow, indicating low variability pressure.
Pressure is decreasing, which may signal impending precipitation or deteriorating weather conditions.
7 days Historical Atmospheric Pressure.
In the past 7 days, in portland, united states of america experienced a stability in pressure. The maximum barometric pressure reached 1021.8 hPa on 15 Sep 2025 at 09:00, and the minimum was 1009.6 hPa on 13 Sep 2025 at 20:00. The average air pressure during this period is 1015.04 hPa, which is classified as normal.
The average daily barometric pressure fluctuation was 4.57 hPa, which is moderate, indicating moderately variable air pressure over the past 7 days. The average daily pressure range was 4.57 hPa, which is narrow, indicating low variability pressure.
Analyzing the data over the past 7 days, it can be stated that pressure remained stable.
14 days Atmospheric Pressure Overview
Over the period of 14 days the atmospheric pressure in portland, united states of america has been decreasing, indicating a general fall in pressure. The maximum pressure reached 1021.8 hPa at 15 Sep 2025 09:00, while the minimum air pressure was 1009.6 hPa at 13 Sep 2025 20:00. The average pressure over this period is 1015.49 hPa, which is considered average.
The most significant rise in barometric pressure occurred between 16 Sep 2025 22:00 to 16 Sep 2025 23:00, with an increase of 0.9 hPa. Conversely, the most notable drop in pressure was observed between 17 Sep 2025 23:00 to 18 Sep 2025 00:00, where air pressure decreased by -2.8 hPa.
* Please be aware that the barometric pressure information displayed for portland, united states of america is provided solely for educational purposes. We do not guarantee the accuracy or reliability of this data. This content is not a substitute for professional medical advice. If you have health concerns, please consult a qualified healthcare provider and do not base medical decisions on the information presented on this site.