指定気圧面の観測データ（日ごとの値）
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八丈島 2023年7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 | 991.1 | 155 | 24.6 | 98 | 5.7 | 230 |
| 2 | 994.0 | 155 | 23.8 | 100 | 2.1 | 242 |
| 3 | 989.7 | 155 | 23.4 | 98 | 2.9 | 255 |
| 4 | 988.8 | 155 | 22.9 | 96 | 2.2 | 240 |
| 5 | 986.4 | 155 | 24.6 | 93 | 1.9 | 197 |
| 6 | 990.1 | 155 | 24.9 | 98 | 2.5 | 220 |
| 7 | 994.7 | 155 | 25.2 | 100 | 4.0 | 220 |
| 8 | 994.5 | 155 | 25.3 | 100 | 4.5 | 230 |
| 9 | 993.7 | 155 | 25.4 | 98 | 3.8 | 231 |
| 10 | 993.8 | 155 | 24.9 | 100 | 2.7 | 231 |
| 11 | 994.1 | 155 | 25.6 | 100 | 3.1 | 238 |
| 12 | 994.0 | 155 | 26.0 | 97 | 3.1 | 226 |
| 13 | 994.3 | 155 | 26.1 | 97 | 3.2 | 230 |
| 14 | 995.9 | 155 | 25.8 | 96 | 3.5 | 230 |
| 15 | 996.3 | 155 | 25.9 | 94 | 2.9 | 233 |
| 16 | 997.4 | 155 | 25.6 | 92 | 4.0 | 245 |
| 17 | 997.7 | 155 | 25.6 | 95 | 3.8 | 260 |
| 18 | 994.7 | 155 | 26.1 | 98 | 2.6 | 252 |
| 19 | 990.4 | 155 | 26.8 | 92 | 3.6 | 227 |
| 20 | 991.5 | 155 | 25.1 | 99 | 2.5 | 210 |
| 21 | 998.2 | 155 | 24.6 | 97 | 1.3 | 34 |
| 22 | 1000.0 | 155 | 24.8 | 94 | 3.9 | 50 |
| 23 | 998.6 | 155 | 24.6 | 94 | 1.1 | 36 |
| 24 | 998.8 | 155 | 23.3 | 94 | 1.1 | 100 |
| 25 | 999.7 | 155 | 24.6 | 92 | 0.5 | 40 |
| 26 | 999.1 | 155 | 24.5 | 95 | 1.3 | 313 |
| 27 | 999.1 | 155 | 23.7 | 93 | 1.1 | 90 |
| 28 | 1000.5 | 155 | 24.4 | 91 | 1.1 | 340 |
| 29 | 1000.5 | 155 | 26.5 | 92 | 0.7 | 270 |
| 30 | 999.8 | 155 | 26.2 | 91 | 1.3 | 274 |
| 31 | 997.2 | 155 | 26.1 | 97 | 1.6 | 259 |