指定気圧面の観測データ（日ごとの値）
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南大東島 2015年5月21時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1011.8 | 17 | 21.1 | 76 | 1.7 | 300 |
| 2 | 1011.9 | 17 | 20.9 | 83 | 0.4 | 150 |
| 3 | 1009.6 | 17 | 24.8 | 83 | 3.7 | 170 |
| 4 | 1008.7 | 17 | 22.3 | 78 | 3.6 | 310 |
| 5 | 1009.0 | 17 | 21.3 | 72 | 2.0 | 10 |
| 6 | 1010.2 | 17 | 22.4 | 72 | 0.5 | 20 |
| 7 | 1010.5 | 17 | 25.0 | 89 | 2.8 | 240 |
| 8 | 1010.5 | 17 | 25.7 | 90 | 3.7 | 180 |
| 9 | 1010.8 | 17 | 26.7 | 91 | 3.2 | 220 |
| 10 | 1014.6 | 17 | 26.1 | 88 | 2.1 | 50 |
| 11 | 1012.4 | 17 | 26.5 | 91 | 6.2 | 120 |
| 12 | 1011.5 | 17 | 24.2 | 93 | 3.6 | 330 |
| 13 | 1014.1 | 17 | 25.7 | 91 | 2.1 | 100 |
| 14 | 1015.2 | 17 | 26.1 | 87 | 2.1 | 210 |
| 15 | 1012.8 | 17 | 26.3 | 84 | 3.2 | 190 |
| 16 | 1010.1 | 17 | 26.8 | 85 | 3.6 | 270 |
| 17 | 1009.3 | 17 | 26.3 | 86 | 2.4 | 80 |
| 18 | 1008.1 | 17 | 26.5 | 80 | 2.8 | 260 |
| 19 | 1007.0 | 17 | 27.0 | 78 | 6.3 | 250 |
| 20 | 1006.9 | 17 | 27.3 | 85 | 5.0 | 220 |
| 21 | 1012.4 | 17 | 23.0 | 82 | 1.8 | 40 |
| 22 | 1010.9 | 17 | 23.1 | 87 | 6.4 | 90 |
| 23 | 1007.5 | 17 | 27.4 | 89 | 5.8 | 210 |
| 24 | 1005.2 | 17 | 27.5 | 89 | 8.0 | 220 |
| 25 | 1006.0 | 17 | 24.7 | 98 | 2.4 | 300 |
| 26 | 1008.4 | 17 | 24.0 | 81 | 3.6 | 30 |
| 27 | 1007.6 | 17 | 24.2 | 80 | 2.4 | 80 |
| 28 | 1002.9 | 17 | 26.0 | 96 | 4.1 | 200 |
| 29 | 1006.1 | 17 | 26.3 | 93 | 3.1 | 270 |
| 30 | 1006.8 | 17 | 26.8 | 91 | 5.1 | 230 |
| 31 | 1008.4 | 17 | 26.5 | 95 | 3.2 | 230 |