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) - Sunday, March 8, 2026 at 01:00 EST
TODAY: |
Sunday |
Reading |
Time |
CTO |
RecHi |
YY |
RecLo |
YY |
|
Current Barometric Pressure: |
999.0 |
mb |
|
998.1 |
mb |
|
|
|
|
|
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|
Maximum Today: |
999.0 |
mb |
00:00 |
998.1 |
mb |
1031.0 |
mb |
2021 |
|
|
|
|
Minimum: |
999.0 |
mb |
00:00 |
997.5 |
mb |
|
|
|
1000.0 |
mb |
2025 |
|
| Mean: |
999.0 |
mb |
|
997.8 |
mb |
1026.5 |
mb |
2021 |
1004.5 |
mb |
2025 |
|
| |
Current Relative Humidity: |
99 |
% |
|
99 |
% |
|
|
|
|
|
|
|
Maximum Today: |
99 |
% |
00:00 |
99 |
% |
99 |
% |
2018 |
|
|
|
|
Minimum: |
99 |
% |
00:00 |
99 |
% |
|
|
|
27 |
% |
2021 |
|
| Mean: |
99 |
% |
|
99 |
% |
96 |
% |
2018 |
52 |
% |
2025 |
|
| |
|
YESTERDAY: |
Saturday |
Reading |
Time |
CTO |
RecHi |
YY |
RecLo |
YY |
|
Maximum Barometric Pressure: |
1020.0 |
mb |
00:00 |
1018.8 |
mb |
1030.0 |
mb |
2020 |
|
|
|
|
Minimum: |
999.0 |
mb |
20:00 |
997.5 |
mb |
|
|
|
995.0 |
mb |
2022 |
|
| Mean: |
1009.5 |
mb |
|
1008.2 |
mb |
1027.0 |
mb |
2020 |
1001.0 |
mb |
2025 |
|
| |
Maximum Relative Humidity: |
99 |
% |
18:30 |
99 |
% |
100 |
% |
2017 |
|
|
|
|
Minimum: |
78 |
% |
00:00 |
75 |
% |
|
|
|
41 |
% |
2020 |
|
| Mean: |
88 |
% |
|
87 |
% |
97 |
% |
2017 |
54 |
% |
2020 |
|
| |
|
TOMORROW: |
Monday |
|
RecHi |
YY |
RecLo |
YY |
|
Barometric Pressure: |
|
1031.0 |
mb |
2021 |
996.0 |
mb |
2014 |
|
| Daily Mean BP: |
|
1026.0 |
mb |
2021 |
1003.5 |
mb |
2018 |
|
| |
Relative Humidity: |
|
100 |
% |
2025 |
36 |
% |
2019 |
|
| Daily Mean BP: |
|
1026.0 |
% |
2021 |
1003.5 |
% |
2018 |
|
| |
|
THIS MONTH: |
Mar Means + Records |
Mean |
CTO |
RecHi |
YY |
RecLo |
YY |
|
| Monthly Mean BP: |
1025.2 |
mb |
1024.1 |
mb |
1018.4 |
mb |
2020 |
-35.1 |
mb |
2014 |
|
| |
| Monthly Mean RH: |
65 |
% |
63 |
% |
100 |
% |
2014 |
0 |
% |
2015 |
|
| |
|
Daily Extremes + Records |
Max |
DD |
Min |
DD |
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Barometric Pressure: |
1040.0 |
mb |
02 |
999.0 |
mb |
07 |
1043.0 |
mb |
2017-05 |
986.0 |
mb |
2025-06 |
|
| Daily Mean BP: |
1037.0 |
mb |
02 |
1009.5 |
mb |
07 |
1039.9 |
mb |
2017-05 |
992.5 |
mb |
2025-06 |
|
| |
Relative Humidity: |
99 |
% |
07 |
28 |
% |
02 |
100 |
% |
2015-15 |
15 |
% |
2021-22 |
|
| Daily Mean RH: |
88 |
% |
07 |
49 |
% |
02 |
98 |
% |
2018-14 |
46 |
% |
2017-13 |
|
| |
|
LAST MONTH: |
Feb Means + Records |
Mean |
CTO |
RecHi |
YY |
RecLo |
YY |
|
| Mean Barometric Pressure: |
1015.9 |
mb |
1014.8 |
mb |
169988485.1 |
mb |
2017 |
-107499066.0 |
mb |
2015 |
|
| |
| Mean Relative Humidity: |
68 |
% |
69 |
% |
1869762592 |
% |
2017 |
-1225804048 |
% |
2015 |
|
| |
|
Daily Extremes + Records |
Max |
DD |
Min |
DD |
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Barometric Pressure: |
1031.0 |
mb |
08 |
996.0 |
mb |
25 |
1045.0 |
mb |
2018-13 |
985.0 |
mb |
2020-07 |
|
| Daily Mean BP: |
1028.0 |
mb |
08 |
1002.0 |
mb |
25 |
1039.2 |
mb |
2015-28 |
989.7 |
mb |
2016-25 |
|
| |
Relative Humidity: |
96 |
% |
17 |
38 |
% |
28 |
100 |
% |
2014-01 |
32 |
% |
2021-26 |
|
| Daily Mean RH: |
85 |
% |
17 |
56 |
% |
15 |
100 |
% |
2018-20 |
48 |
% |
2024-29 |
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| |
|
NEXT MONTH: |
April Monthly Records |
|
RecHi |
YY |
RecLo |
YY |
|
| Mean Barometric Pressure: |
|
1018.3 |
mb |
2016 |
-14.0 |
mb |
2014 |
|
| |
| Mean Relative Humidity: |
|
100 |
% |
2014 |
0 |
% |
2015 |
|
| |
|
April Daily Records |
|
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Barometric Pressure: |
|
1036.0 |
mb |
2016-16 |
986.0 |
mb |
2020-09 |
|
| Daily Mean BP: |
|
1033.5 |
mb |
2016-16 |
993.0 |
mb |
2020-09 |
|
| |
Relative Humidity: |
|
100 |
% |
2015-04 |
14 |
% |
2020-25 |
|
| Daily Mean RH: |
|
100 |
% |
2017-13 |
35 |
% |
2016-24 |
|
| |
|
THIS YEAR: |
2026 Means + Records |
Mean |
CTO |
RecHi |
YY |
RecLo |
YY |
|
| Annual Mean BP: |
1019.8 |
mb |
1013.9 |
mb |
13545939.2 |
mb |
2013 |
-121942637.6 |
mb |
2013 |
|
| |
| Annual Mean RH: |
67 |
% |
73 |
% |
134532195 |
% |
2013 |
-1225007104 |
% |
2056 |
|
| |
|
Monthly Extremes + Records |
Max |
MM |
Min |
MM |
RecHi |
YY-MM |
RecLo |
YY-MM |
|
| Monthly Mean BP: |
1015.9 |
mb |
Feb |
1014.1 |
mb |
Jan |
170199997.2 |
mb |
2016-Sep |
-108179039.6 |
mb |
2015-Jan |
|
| |
| Monthly Mean RH: |
74 |
% |
Jan |
68 |
% |
Feb |
1881171822 |
% |
2016-Sep |
-1225804048 |
% |
2015-Feb |
|
| |
|
Daily Extremes + Records |
Max |
MM-DD |
Min |
MM-DD |
RecHi |
Date |
RecLo |
Date |
|
Barometric Pressure: |
1041.0 |
mb |
Jan-24 |
993.0 |
mb |
Jan-14 |
13554508.8 |
mb |
2014-01-31 |
-122673840.8 |
mb |
2014-01-31 |
|
| Daily Mean BP: |
1037.5 |
mb |
Jan-24 |
997.0 |
mb |
Jan-14 |
13554518.4 |
mb |
2014-01-31 |
0.0 |
mb |
2014-01-31 |
|
| |
Relative Humidity: |
99 |
% |
Mar-07 |
28 |
% |
Mar-02 |
100 |
% |
2015-03-15 |
-1224780080 |
% |
2014-01-31 |
|
| Daily Mean RH: |
88 |
% |
Mar-07 |
49 |
% |
Mar-02 |
100 |
% |
2015-12-02 |
-1081677968 |
% |
2056-01-31 |
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| |
|
LAST YEAR: |
2025 Means |
Mean |
CTO |
|
| Annual Mean BP: |
1015.2 |
mb |
1014.4 |
mb |
|
| |
| Annual Mean RH: |
72 |
% |
67 |
% |
|
|
Monthly Extremes |
Max |
MM |
Min |
MM |
|
| Monthly Mean BP: |
1019.3 |
mb |
Oct |
1010.6 |
mb |
Mar |
|
| |
| Monthly Mean RH: |
80 |
% |
Nov |
66 |
% |
Apr |
|
|
Daily Extremes |
Max |
MM-DD |
Min |
MM-DD |
|
Barometric Pressure: |
1037.0 |
mb |
Feb-01 |
985.0 |
mb |
Dec-19 |
|
| Daily Mean BP: |
1033.0 |
mb |
Oct-09 |
985.0 |
mb |
Oct-31 |
|
| |
Relative Humidity: |
100 |
% |
Jan-01 |
18 |
% |
Apr-17 |
|
| Daily Mean RH: |
100 |
% |
Jul-07 |
40 |
% |
May-11 |
|
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