Ottawa Airport (YOW):
BAROMETRIC PRESSURE
RELATIVE HUMIDITY
Times in Eastern Standard Time (EST = GMT-5)
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LIVE OBSERVATIONS at Ottawa Airport (YOW) - Wednesday, December 10, 2025 at 14:00 EST
TODAY: |
Wednesday |
Reading |
Time |
CTO |
RecHi |
YY |
RecLo |
YY |
|
Current Barometric Pressure: |
993.0 |
mb |
|
991.4 |
mb |
|
|
|
|
|
|
|
Maximum Today: |
1004.0 |
mb |
00:00 |
1002.9 |
mb |
1036.0 |
mb |
2022 |
|
|
|
|
Minimum: |
993.0 |
mb |
13:00 |
991.4 |
mb |
|
|
|
0.0 |
mb |
n/a |
|
| Mean: |
998.5 |
mb |
|
997.2 |
mb |
1033.5 |
mb |
2022 |
1007.5 |
mb |
2017 |
|
| |
Current Relative Humidity: |
91 |
% |
|
90 |
% |
|
|
|
|
|
|
|
Maximum Today: |
93 |
% |
03:48 |
90 |
% |
100 |
% |
2024 |
|
|
|
|
Minimum: |
88 |
% |
01:38 |
88 |
% |
|
|
|
0 |
% |
n/a |
|
| Mean: |
90 |
% |
|
89 |
% |
100 |
% |
2024 |
70 |
% |
2019 |
|
| |
|
YESTERDAY: |
Tuesday |
Reading |
Time |
CTO |
RecHi |
YY |
RecLo |
YY |
|
Maximum Barometric Pressure: |
1026.0 |
mb |
00:00 |
1024.6 |
mb |
1035.0 |
mb |
2022 |
|
|
|
|
Minimum: |
1004.0 |
mb |
23:00 |
1002.9 |
mb |
|
|
|
0.0 |
mb |
n/a |
|
| Mean: |
1015.0 |
mb |
|
1013.8 |
mb |
1032.0 |
mb |
2022 |
1004.5 |
mb |
2020 |
|
| |
Maximum Relative Humidity: |
89 |
% |
23:00 |
89 |
% |
100 |
% |
2024 |
|
|
|
|
Minimum: |
77 |
% |
06:00 |
73 |
% |
|
|
|
0 |
% |
n/a |
|
| Mean: |
83 |
% |
|
81 |
% |
92 |
% |
2019 |
72 |
% |
2022 |
|
| |
|
TOMORROW: |
Thursday |
|
RecHi |
YY |
RecLo |
YY |
|
Barometric Pressure: |
|
1030.0 |
mb |
2022 |
0.0 |
mb |
n/a |
|
| Daily Mean BP: |
|
1026.0 |
mb |
2022 |
1001.5 |
mb |
2021 |
|
| |
Relative Humidity: |
|
100 |
% |
2024 |
0 |
% |
n/a |
|
| Daily Mean BP: |
|
1026.0 |
% |
2022 |
1001.5 |
% |
2021 |
|
| |
|
THIS MONTH: |
Dec Means + Records |
Mean |
CTO |
RecHi |
YY |
RecLo |
YY |
|
| Monthly Mean BP: |
1018.1 |
mb |
1017.0 |
mb |
1019.9 |
mb |
2024 |
1010.8 |
mb |
2023 |
|
| |
| Monthly Mean RH: |
76 |
% |
75 |
% |
84 |
% |
2024 |
75 |
% |
2017 |
|
| |
|
Daily Extremes + Records |
Max |
DD |
Min |
DD |
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Barometric Pressure: |
1031.0 |
mb |
01 |
1004.0 |
mb |
09 |
1050.0 |
mb |
2024-14 |
0.0 |
mb |
n/a-n/a |
|
| Daily Mean BP: |
1025.0 |
mb |
08 |
1011.0 |
mb |
06 |
1047.0 |
mb |
2024-14 |
989.0 |
mb |
2022-24 |
|
| |
Relative Humidity: |
96 |
% |
03 |
40 |
% |
04 |
100 |
% |
2022-06 |
0 |
% |
n/a-n/a |
|
| Daily Mean RH: |
87 |
% |
03 |
64 |
% |
04 |
100 |
% |
2024-10 |
49 |
% |
2022-05 |
|
| |
|
LAST MONTH: |
Nov Means + Records |
Mean |
CTO |
RecHi |
YY |
RecLo |
YY |
|
| Mean Barometric Pressure: |
1011.5 |
mb |
1010.6 |
mb |
1024.5 |
mb |
2017 |
1011.5 |
mb |
2025 |
|
| |
| Mean Relative Humidity: |
80 |
% |
80 |
% |
88 |
% |
2017 |
72 |
% |
2022 |
|
| |
|
Daily Extremes + Records |
Max |
DD |
Min |
DD |
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Barometric Pressure: |
1032.0 |
mb |
29 |
986.0 |
mb |
16 |
1041.0 |
mb |
2022-08 |
0.0 |
mb |
n/a-n/a |
|
| Daily Mean BP: |
1025.0 |
mb |
29 |
992.0 |
mb |
16 |
1036.0 |
mb |
2017-11 |
992.0 |
mb |
2025-16 |
|
| |
Relative Humidity: |
99 |
% |
07 |
38 |
% |
04 |
100 |
% |
2017-19 |
0 |
% |
n/a-n/a |
|
| Daily Mean RH: |
94 |
% |
20 |
60 |
% |
04 |
98 |
% |
2017-02 |
44 |
% |
2024-15 |
|
| |
|
NEXT MONTH: |
January Monthly Records |
|
RecHi |
YY |
RecLo |
YY |
|
| Mean Barometric Pressure: |
|
170199997.2 |
mb |
2017 |
-108179039.6 |
mb |
2015 |
|
| |
| Mean Relative Humidity: |
|
1881171822 |
% |
2017 |
-1225562384 |
% |
2015 |
|
| |
|
January Daily Records |
|
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Barometric Pressure: |
|
1046.0 |
mb |
2018-15 |
0.0 |
mb |
2015-01 |
|
| Daily Mean BP: |
|
1041.0 |
mb |
2018-15 |
883.0 |
mb |
2015-01 |
|
| |
Relative Humidity: |
|
100 |
% |
2016-01 |
32 |
% |
2017-11 |
|
| Daily Mean RH: |
|
100 |
% |
2017-18 |
53 |
% |
2019-28 |
|
| |
|
THIS YEAR: |
2025 Means + Records |
Mean |
CTO |
RecHi |
YY |
RecLo |
YY |
|
| Annual Mean BP: |
1015.9 |
mb |
1014.5 |
mb |
13545939.2 |
mb |
2013 |
-121942637.6 |
mb |
2013 |
|
| |
| Annual Mean RH: |
72 |
% |
66 |
% |
134532195 |
% |
2013 |
-1225007104 |
% |
2056 |
|
| |
|
Monthly Extremes + Records |
Max |
MM |
Min |
MM |
RecHi |
YY-MM |
RecLo |
YY-MM |
|
| Monthly Mean BP: |
1019.3 |
mb |
Oct |
1010.6 |
mb |
Mar |
170199997.2 |
mb |
2016-Sep |
-108179039.6 |
mb |
2015-Jan |
|
| |
| Monthly Mean RH: |
80 |
% |
Nov |
66 |
% |
Apr |
1881171822 |
% |
2016-Sep |
-1225804048 |
% |
2015-Feb |
|
| |
|
Daily Extremes + Records |
Max |
MM-DD |
Min |
MM-DD |
RecHi |
Date |
RecLo |
Date |
|
Barometric Pressure: |
1037.0 |
mb |
Feb-01 |
986.0 |
mb |
Mar-06 |
13554508.8 |
mb |
2014-01-31 |
-122673840.8 |
mb |
2014-01-31 |
|
| Daily Mean BP: |
1033.0 |
mb |
Feb-01 |
992.0 |
mb |
Mar-06 |
13554518.4 |
mb |
2014-01-31 |
0.0 |
mb |
2014-01-31 |
|
| |
Relative Humidity: |
100 |
% |
Jan-01 |
18 |
% |
Apr-17 |
100 |
% |
2015-03-15 |
-1224780080 |
% |
2014-01-31 |
|
| Daily Mean RH: |
100 |
% |
Jul-07 |
40 |
% |
May-11 |
100 |
% |
2015-12-02 |
-1081677968 |
% |
2056-01-31 |
|
| |
|
LAST YEAR: |
2024 Means |
Mean |
CTO |
|
| Annual Mean BP: |
1017.6 |
mb |
1015.4 |
mb |
|
| |
| Annual Mean RH: |
77 |
% |
68 |
% |
|
|
Monthly Extremes |
Max |
MM |
Min |
MM |
|
| Monthly Mean BP: |
1019.9 |
mb |
Dec |
1014.9 |
mb |
Nov |
|
| |
| Monthly Mean RH: |
84 |
% |
Dec |
72 |
% |
Oct |
|
|
Daily Extremes |
Max |
MM-DD |
Min |
MM-DD |
|
Barometric Pressure: |
1050.0 |
mb |
Dec-14 |
994.0 |
mb |
Dec-05 |
|
| Daily Mean BP: |
1047.0 |
mb |
Dec-14 |
994.0 |
mb |
Dec-30 |
|
| |
Relative Humidity: |
100 |
% |
Oct-07 |
19 |
% |
Oct-28 |
|
| Daily Mean RH: |
100 |
% |
Dec-10 |
42 |
% |
Oct-28 |
|
| |
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