Station: Portland Airport  

  Atmospheric Gas Attenuation - ITU Rec 676-11   ----------------- dB/100km -----------------
Date Time Temp RH % AH g/m3 Dew Point Wind Direction Speed kph Gust kph Barometer mB Rainfall Since 9am 24GHz 47GHz 76GHz 122GHz 134GHz 241GHz
05/11 10:40 15 64 8.21 8.3 26 33 1020.1 0 18.7 25.2 38.0 99.5 92.4 317.5
05/11 10:30 13.8 66 7.86 7.6 22 30 1020 0 18.0 25.0 37.2 97.3 89.3 306.4
05/11 10:20 14 68 8.2 8.2 20 30 1019.9 0 18.7 25.4 38.4 100.6 93.4 321.1
05/11 10:10 14.4 68 8.41 8.6 24 33 1019.9 0 19.1 25.7 39.0 102.3 95.7 329.0
05/11 10:00 13.8 66 7.86 7.6 24 30 1019.8 0 18.0 25.0 37.1 97.3 89.3 306.4
05/11 09:50 14.2 66 8.06 7.9 20 30 1019.8 0 18.4 25.2 37.7 98.9 91.4 313.9
05/11 09:40 14.2 66 8.06 7.9 20 30 1019.8 0 18.4 25.2 37.7 98.9 91.4 313.9
05/11 09:30 14.2 65 7.94 7.7 19 26 1019.8 0 18.2 25.0 37.3 97.6 89.8 308.4
05/11 09:20 12.8 69 7.73 7.3 19 24 1019.8 0 17.8 25.0 37.1 97.1 88.7 304.3
05/11 09:10 14.1 65 7.89 7.6 19 26 1019.7 0 18.1 24.9 37.1 97.2 89.3 306.6
05/11 09:00 13.3 66 7.63 7.1 20 28 1019.7 0 17.5 24.7 36.5 95.5 86.8 297.9
05/11 08:50 13.3 69 7.97 7.7 19 26 1019.6 3.6 18.3 25.3 37.8 99.0 91.2 313.3
05/11 08:40 12.7 70 7.79 7.4 22 30 1019.4 3.6 17.9 25.1 37.4 97.9 89.6 307.4
05/11 08:30 13.8 68 8.1 8 19 28 1019.3 3.6 18.5 25.3 38.1 99.8 92.3 317.2
05/11 08:20 13.7 71 8.41 8.5 19 22 1019.3 3.6 19.2 25.8 39.4 103.2 96.5 331.8
05/11 08:10 13.1 71 8.1 8 15 22 1019.2 3.6 18.5 25.5 38.4 100.6 93.2 320.0
05/11 08:00 12.8 75 8.4 8.5 13 19 1019 3.6 19.2 26.1 39.7 104.2 97.5 335.1
05/11 07:50 11.5 80 8.26 8.2 11 13 1019 3.6 19.0 26.2 39.8 104.4 97.2 334.0
05/11 07:40 11.2 80 8.11 7.9 11 13 1018.9 3.6 18.7 26.1 39.4 103.2 95.6 328.2
05/11 07:30 10.8 81 8.01 7.7 11 15 1018.7 3.6 18.5 26.0 39.1 102.6 94.7 325.1
05/11 07:20 10.5 82 7.95 7.6 11 17 1018.7 3.6 18.3 26.0 39.0 102.3 94.3 323.5
05/11 07:10 9.9 86 8.03 7.7 11 17 1018.6 3.6 18.5 26.3 39.7 104.0 96.1 329.8
05/11 07:00 9.3 85 7.64 6.9 11 13 1018.5 3.6 17.7 25.8 38.3 100.4 91.5 313.6
05/11 06:50 9.2 84 7.5 6.6 9 13 1018.2 3.6 17.4 25.6 37.8 99.0 89.7 307.2
05/11 06:40 9.2 86 7.68 7 9 11 1018.1 3.6 17.8 25.9 38.5 101.0 92.1 315.8
05/11 06:30 8.6 86 7.39 6.4 9 11 1017.8 3.6 17.2 25.6 37.6 98.5 88.8 304.2
05/11 06:20 8 86 7.11 5.8 9 11 1017.9 3.6 16.7 25.3 36.7 96.2 85.7 293.2
05/11 06:10 7.9 85 6.98 5.5 9 11 1017.8 3.6 16.4 25.1 36.3 94.9 84.1 287.4
05/11 06:00 7.9 83 6.82 5.2 9 11 1017.7 3.6 16.0 24.8 35.6 93.1 81.9 279.8
05/11 05:50 8.5 81 6.92 5.4 9 13 1017.7 3.6 16.2 24.8 35.7 93.5 82.6 282.4
05/11 05:40 8.8 81 7.05 5.7 11 13 1017.6 3.6 16.5 25.0 36.1 94.5 84.0 287.4
05/11 05:30 8.5 82 7 5.6 11 13 1017.6 3.6 16.4 25.0 36.1 94.3 83.7 286.1
05/11 05:20 8.4 81 6.87 5.3 11 13 1017.7 3.6 16.1 24.8 35.6 93.0 82.0 280.4
05/11 05:10 8.3 80 6.75 5.1 11 13 1017.5 3.6 15.9 24.6 35.1 91.9 80.5 275.1
05/11 05:00 8.4 79 6.7 5 11 15 1017.5 3.6 15.8 24.5 34.9 91.2 79.8 272.4
05/11 04:50 8.8 78 6.79 5.2 13 17 1017.6 3.6 15.9 24.5 35.1 91.7 80.6 275.2
05/11 04:40 8 81 6.7 4.9 11 15 1017.6 3.6 15.8 24.6 35.1 91.7 80.2 273.8
05/11 04:30 8 79 6.53 4.6 11 15 1017.4 3.6 15.4 24.3 34.4 89.8 77.9 265.9
05/11 04:20 8.6 77 6.62 4.8 13 15 1017.5 3.6 15.6 24.3 34.5 90.1 78.5 268.0
05/11 04:10 9.2 74 6.61 4.8 13 17 1017.5 3.6 15.5 24.1 34.2 89.3 77.8 265.6
05/11 04:00 9 75 6.61 4.8 13 17 1017.4 3.6 15.5 24.2 34.3 89.5 78.0 266.2
05/11 03:50 9.1 74 6.57 4.7 13 20 1017.5 3.6 15.4 24.1 34.1 89.0 77.3 264.1
05/11 03:40 9.5 73 6.65 4.9 17 22 1017.4 3.6 15.6 24.1 34.2 89.4 78.0 266.4
05/11 03:30 9.5 75 6.83 5.3 15 20 1017.2 3.6 16.0 24.4 34.9 91.3 80.3 274.6
05/11 03:20 9.4 75 6.79 5.2 13 19 1017.2 3.6 15.9 24.4 34.8 91.0 79.9 273.1
05/11 03:10 9.6 73 6.69 5 13 20 1017.2 3.6 15.7 24.1 34.3 89.7 78.4 267.8
05/11 03:00 9.7 70 6.46 4.5 15 20 1017.1 3.6 15.2 23.8 33.4 87.1 75.3 257.0
05/11 02:50 9.9 70 6.54 4.7 15 22 1017.3 3.6 15.4 23.8 33.6 87.8 76.2 260.0
05/11 02:40 9.9 72 6.72 5.1 15 24 1017.3 3.6 15.7 24.1 34.3 89.7 78.5 268.2
05/11 02:30 9.6 73 6.69 5 15 20 1017.2 3.6 15.7 24.1 34.3 89.7 78.4 267.8
05/11 02:20 10.1 72 6.81 5.3 15 20 1017.2 3.6 15.9 24.2 34.6 90.4 79.5 271.6
05/11 02:10 10.4 78 7.52 6.7 15 19 1017.2 3.6 17.4 25.3 37.3 97.6 88.5 303.2
05/11 02:00 10.8 77 7.61 6.9 17 24 1017 3.6 17.6 25.3 37.4 98.1 89.2 305.8
05/11 01:50 10.8 76 7.51 6.7 19 24 1017.2 3.6 17.4 25.1 37.0 97.0 87.9 301.2
05/11 01:40 11.1 75 7.56 6.8 19 28 1017.3 3.6 17.5 25.1 37.1 97.2 88.2 302.4
05/11 01:30 11 75 7.51 6.7 20 28 1017.2 3.6 17.4 25.1 36.9 96.8 87.7 300.5
05/11 01:20 11 77 7.71 7.1 17 24 1017.3 3.6 17.8 25.4 37.8 98.9 90.3 309.8
05/11 01:10 11.2 76 7.7 7.1 17 30 1017.3 3.6 17.8 25.3 37.6 98.6 90.0 308.5
05/11 01:00 11.6 77 8 7.7 20 32 1017.2 3.6 18.4 25.7 38.6 101.3 93.5 320.9
05/11 00:50 11.6 78 8.11 7.9 19 32 1017.4 3.6 18.6 25.9 39.1 102.5 95.0 326.1
05/11 00:40 11.6 78 8.11 7.9 20 30 1017.3 3.6 18.6 25.9 39.1 102.5 95.0 326.1
05/11 00:30 11.6 79 8.21 8.1 20 28 1017.3 3.6 18.9 26.1 39.5 103.6 96.3 330.8
05/11 00:20 11.5 80 8.26 8.2 19 30 1017.3 3.6 19.0 26.2 39.8 104.2 97.1 333.6
05/11 00:10 11.7 81 8.47 8.6 19 28 1017.3 3.6 19.4 26.5 40.5 106.3 99.7 342.7
05/11 00:00 11.3 80 8.16 8 24 35 1017.2 3.6 18.8 26.1 39.4 103.4 96.0 329.7
04/11 23:50 11.8 78 8.21 8.1 20 32 1017.2 3.6 18.8 26.0 39.4 103.3 96.0 329.9
04/11 23:40 11.6 77 8 7.7 22 32 1017.2 3.6 18.4 25.7 38.6 101.3 93.5 320.9
04/11 23:30 11.6 77 8 7.7 22 35 1017 3.6 18.4 25.7 38.6 101.3 93.5 320.8
04/11 23:20 12 79 8.42 8.5 22 33 1017.1 3.6 19.3 26.3 40.1 105.3 98.6 338.9
04/11 23:10 11.9 78 8.26 8.2 22 35 1016.9 3.6 18.9 26.0 39.5 103.7 96.6 331.8
04/11 23:00 11.7 75 7.85 7.4 24 39 1016.7 3.6 18.1 25.4 38.0 99.5 91.3 313.4
04/11 22:50 11.9 74 7.84 7.4 26 44 1016.8 3.6 18.0 25.3 37.8 99.1 91.0 312.1
04/11 22:40 11.9 77 8.16 8 24 37 1016.7 3.6 18.7 25.9 39.1 102.6 95.2 327.0
04/11 22:30 11.9 78 8.26 8.2 24 39 1016.5 3.6 18.9 26.0 39.5 103.6 96.5 331.6
04/11 22:20 11.8 79 8.32 8.3 24 33 1016.5 3.6 19.1 26.1 39.8 104.4 97.5 334.9
04/11 22:10 11.9 79 8.37 8.4 26 37 1016.3 3.6 19.2 26.2 40.0 104.8 98.0 336.8
04/11 22:00 11.8 79 8.32 8.3 24 37 1016.1 3.6 19.1 26.1 39.8 104.4 97.4 334.8
04/11 21:50 11.7 79 8.26 8.2 26 35 1016.1 3.6 19.0 26.1 39.6 103.9 96.7 332.4
04/11 21:40 11.7 80 8.37 8.4 28 37 1015.9 3.6 19.2 26.2 40.0 105.0 98.2 337.5
04/11 21:30 11.8 82 8.63 8.8 24 35 1015.6 3.6 19.7 26.6 41.0 107.7 101.6 349.3
04/11 21:20 11.8 80 8.42 8.5 28 35 1015.5 3.6 19.3 26.3 40.2 105.4 98.7 339.3
04/11 21:10 11.4 80 8.21 8.1 24 33 1015.5 3.6 18.9 26.0 39.5 103.6 96.4 331.1
04/11 21:00 11.3 79 8.06 7.8 28 39 1015.3 3.6 18.5 25.8 38.9 102.1 94.5 324.4
04/11 20:50 11.6 80 8.32 8.3 30 39 1015.2 3.6 19.1 26.2 39.9 104.5 97.6 335.4
04/11 20:40 11.8 82 8.63 8.8 28 37 1014.8 3.6 19.7 26.6 41.0 107.6 101.5 349.1
04/11 20:30 12 82 8.74 9 30 41 1014.7 3.6 20.0 26.7 41.4 108.6 102.7 353.4
04/11 20:20 11.8 81 8.53 8.6 30 43 1014.4 3.6 19.5 26.4 40.6 106.5 100.1 344.3
04/11 20:10 11.7 82 8.58 8.7 32 44 1014.2 3.6 19.6 26.5 40.8 107.2 100.9 347.0
04/11 20:00 12 80 8.53 8.7 26 39 1014.1 3.6 19.5 26.3 40.5 106.2 99.8 343.3
04/11 19:50 11.9 81 8.58 8.7 30 41 1013.9 3.6 19.6 26.4 40.7 106.9 100.6 346.0
04/11 19:40 11.6 84 8.73 9 24 33 1013.9 3.6 20.0 26.8 41.5 108.9 103.1 354.5
04/11 19:30 11 85 8.51 8.6 26 46 1013.9 3.6 19.5 26.6 40.9 107.3 100.9 346.7
04/11 19:20 11.3 81 8.26 8.2 32 50 1013.8 3.6 19.0 26.1 39.7 104.1 97.1 333.5
04/11 19:10 12.2 73 7.88 7.5 32 44 1013.4 3.4 18.1 25.2 37.7 98.8 90.9 311.9
04/11 19:00 12.4 73 7.98 7.7 33 43 1013.3 3.4 18.3 25.3 38.0 99.6 91.9 315.7
04/11 18:50 12.1 76 8.15 8 33 48 1013.2 3.4 18.7 25.7 38.8 101.8 94.5 324.8
04/11 18:40 12.3 77 8.36 8.4 32 50 1013 3.4 19.1 25.9 39.6 103.8 97.1 333.7
04/11 18:30 12 83 8.85 9.2 37 54 1013 3.4 20.2 26.8 41.7 109.6 104.1 358.2
04/11 18:20 13.8 66 7.86 7.6 35 54 1012.8 3 18.0 24.7 36.8 96.6 88.7 304.6
04/11 18:10 14.1 69 8.37 8.5 39 54 1012.6 3 19.1 25.4 38.7 101.5 95.0 326.5

Last Refresh: 05-Nov-2026 10:16:57

Bureau of Meteorology