Weather/Puerto Rico/Instruments/TJIG
At an airfield
ASOS network, identified by the register
Now, today, and the week
On the radar over San JuanReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Drawn as the kind of place it stands at. 6 instruments in Puerto Rico stand at one.
-in
Snow on the ground
Station charts
Its schedule is one report every hour, 24 in 24 hours. Two reports in the same hour count as one received.
| Hour | Temperature F | Dew point F | Relative humidity % | Wind mph | Gust mph | Wind direction ° | Pressure, altimeter inHg | Visibility mi | Lowest cloud base ft | Precipitation in | Reports |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sat 10, 6 PM | 82.4 | 73.4 | 74 | 14 | - | 110 | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 5 PM | 84.2 | 75.2 | 75 | 13 | - | 80 | 29.98 | 10.0 | 3,500 | 0.00 | 1 |
| Sat 10, 4 PM | 86.0 | 73.4 | 66 | 15 | 23 | 110 | 29.96 | 10.0 | 3,500 | 0.00 | 1 |
| Sat 10, 3 PM | 87.8 | 75.2 | 66 | 13 | - | 90 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 2 PM | 87.8 | 75.2 | 66 | 13 | - | 90 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 1 PM | 87.8 | 75.2 | 66 | 14 | - | 100 | 29.97 | 10.0 | 2,500 | 0.00 | 1 |
| Sat 10, 12 PM | 87.8 | 75.2 | 66 | 12 | - | 100 | 29.99 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 11 AM | 86.0 | 75.2 | 70 | 12 | - | 100 | 30.02 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 10 AM | 84.2 | 75.2 | 75 | 9 | - | 100 | 30.05 | 10.0 | 2,500 | 0.00 | 1 |
| Sat 10, 9 AM | 82.4 | 75.2 | 79 | 5 | - | 130 | 30.05 | 10.0 | 2,500 | 0.00 | 1 |
| Sat 10, 8 AM | 80.6 | 73.4 | 79 | 8 | - | 30 | 30.04 | 7.0 | 2,000 | 0.00 | 1 |
| Sat 10, 7 AM | 80.6 | 75.2 | 84 | 0 | - | - | 30.02 | 8.0 | 3,000 | 0.00 | 1 |
| Sat 10, 6 AM | 78.8 | 73.4 | 84 | 0 | - | - | 30.01 | 8.0 | 3,000 | 0.00 | 1 |
| Hour | Temperature F | Dew point F | Relative humidity % | Wind mph | Gust mph | Wind direction ° | Pressure, altimeter inHg | Visibility mi | Lowest cloud base ft | Precipitation in | Reports |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sat 10, 6 PM | 82.4 | 73.4 | 74 | 14 | - | 110 | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 5 PM | 84.2 | 75.2 | 75 | 13 | - | 80 | 29.98 | 10.0 | 3,500 | 0.00 | 1 |
| Sat 10, 4 PM | 86.0 | 73.4 | 66 | 15 | 23 | 110 | 29.96 | 10.0 | 3,500 | 0.00 | 1 |
| Sat 10, 3 PM | 87.8 | 75.2 | 66 | 13 | - | 90 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 2 PM | 87.8 | 75.2 | 66 | 13 | - | 90 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 1 PM | 87.8 | 75.2 | 66 | 14 | - | 100 | 29.97 | 10.0 | 2,500 | 0.00 | 1 |
| Sat 10, 12 PM | 87.8 | 75.2 | 66 | 12 | - | 100 | 29.99 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 11 AM | 86.0 | 75.2 | 70 | 12 | - | 100 | 30.02 | 10.0 | 3,000 | 0.00 | 1 |
| Sat 10, 10 AM | 84.2 | 75.2 | 75 | 9 | - | 100 | 30.05 | 10.0 | 2,500 | 0.00 | 1 |
| Sat 10, 9 AM | 82.4 | 75.2 | 79 | 5 | - | 130 | 30.05 | 10.0 | 2,500 | 0.00 | 1 |
| Sat 10, 8 AM | 80.6 | 73.4 | 79 | 8 | - | 30 | 30.04 | 7.0 | 2,000 | 0.00 | 1 |
| Sat 10, 7 AM | 80.6 | 75.2 | 84 | 0 | - | - | 30.02 | 8.0 | 3,000 | 0.00 | 1 |
| Sat 10, 6 AM | 78.8 | 73.4 | 84 | 0 | - | - | 30.01 | 8.0 | 3,000 | 0.00 | 1 |
| Fri 9, 6 PM | 84.2 | 77.0 | 79 | 9 | - | 110 | 29.97 | 10.0 | 2,500 | 0.00 | 1 |
| Fri 9, 5 PM | 84.2 | 75.2 | 75 | 13 | 17 | 110 | 29.96 | 10.0 | 2,500 | 0.00 | 1 |
| Fri 9, 4 PM | 86.0 | 75.2 | 70 | 13 | - | 110 | 29.96 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 3 PM | 87.8 | 77.0 | 71 | 15 | - | 100 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 2 PM | 87.8 | 77.0 | 71 | 17 | 24 | 100 | 29.96 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 1 PM | 87.8 | 75.2 | 66 | 16 | - | 100 | 29.97 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 12 PM | 89.6 | 75.2 | 63 | 15 | - | 100 | 29.99 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 11 AM | 87.8 | 75.2 | 66 | 15 | - | 100 | 30.01 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 10 AM | 87.8 | 75.2 | 66 | 14 | - | 100 | 30.02 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 9 AM | 87.8 | 75.2 | 66 | 14 | - | 100 | 30.04 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 8 AM | 86.0 | 75.2 | 70 | 13 | - | 100 | 30.03 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 7 AM | 82.4 | 75.2 | 79 | 7 | - | 140 | 30.01 | 10.0 | 3,000 | 0.00 | 1 |
| Fri 9, 6 AM | 80.6 | 73.4 | 79 | 0 | - | - | 30.00 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 6 PM | 84.2 | 75.2 | 75 | 9 | - | 120 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 5 PM | 87.8 | 75.2 | 66 | 12 | - | 120 | 29.94 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 4 PM | 87.8 | 77.0 | 71 | 15 | - | 120 | 29.92 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 3 PM | 87.8 | 77.0 | 71 | 17 | - | 100 | 29.90 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 2 PM | 87.8 | 78.8 | 75 | 9 | - | 100 | 29.91 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 1 PM | 84.2 | 75.2 | 75 | 9 | - | 120 | 29.93 | 10.0 | 2,500 | 0.00 | 1 |
| Thu 8, 12 PM | 82.4 | 77.0 | 84 | 5 | - | 290 | 29.95 | 8.0 | 2,500 | 0.00 | 1 |
| Thu 8, 11 AM | 87.8 | 78.8 | 75 | 14 | - | 100 | 29.96 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 10 AM | 87.8 | 75.2 | 66 | 8 | - | 190 | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 9 AM | 87.8 | 75.2 | 66 | 7 | - | 110 | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 8 AM | 82.4 | 75.2 | 79 | 6 | - | 180 | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 7 AM | 80.6 | 75.2 | 84 | 0 | - | - | 29.97 | 10.0 | 3,000 | 0.00 | 1 |
| Thu 8, 6 AM | 80.6 | 75.2 | 84 | 0 | - | - | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Wed 7, 6 PM | 78.8 | 71.6 | 79 | 7 | - | 210 | 29.90 | 8.0 | 3,000 | 0.00 | 1 |
| Wed 7, 5 PM | 86.0 | 73.4 | 66 | 7 | - | 170 | 29.89 | 10.0 | 3,000 | 0.00 | 1 |
| Wed 7, 4 PM | 87.8 | 73.4 | 63 | 8 | - | 150 | 29.88 | 10.0 | 3,000 | 0.00 | 1 |
| Wed 7, 3 PM | 87.8 | 73.4 | 63 | 12 | - | 170 | 29.87 | 10.0 | 3,000 | 0.00 | 1 |
| Wed 7, 2 PM | 89.6 | 73.4 | 59 | 8 | 18 | 160 | 29.88 | 10.0 | 3,000 | 0.00 | 1 |
| Wed 7, 1 PM | 89.6 | 73.4 | 59 | 12 | 18 | 130 | 29.88 | 8.0 | 3,000 | 0.00 | 1 |
| Wed 7, 12 PM | 87.8 | 73.4 | 63 | - | - | - | 29.90 | 8.0 | 3,000 | 0.00 | 1 |
| Wed 7, 11 AM | 86.0 | 75.2 | 70 | 8 | 18 | 150 | 29.93 | 8.0 | 3,000 | 0.00 | 1 |
| Wed 7, 10 AM | 80.6 | 75.2 | 84 | 5 | - | 170 | 29.95 | 6.0 | 2,500 | 0.00 | 1 |
| Wed 7, 9 AM | 84.2 | 75.2 | 75 | 8 | - | 80 | 29.94 | 10.0 | 2,500 | 0.00 | 1 |
| Wed 7, 8 AM | 86.0 | 73.4 | 66 | 7 | - | 140 | 29.94 | 10.0 | 3,500 | 0.00 | 1 |
| Wed 7, 7 AM | 82.4 | 73.4 | 74 | 7 | - | 140 | 29.93 | 10.0 | 2,500 | 0.00 | 1 |
| Wed 7, 6 AM | 80.6 | 73.4 | 79 | 0 | - | - | 29.90 | 10.0 | 2,500 | 0.00 | 1 |
| Tue 6, 6 PM | 82.4 | 75.2 | 79 | 8 | - | 110 | 29.89 | 10.0 | 2,500 | 0.00 | 1 |
| Tue 6, 5 PM | 84.2 | 75.2 | 75 | 18 | 23 | 100 | 29.88 | 10.0 | 2,500 | 0.00 | 1 |
| Tue 6, 4 PM | 86.0 | 77.0 | 75 | 15 | - | 100 | 29.86 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 3 PM | 86.0 | 77.0 | 75 | 16 | - | 100 | 29.85 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 2 PM | 87.8 | 77.0 | 71 | 16 | - | 100 | 29.87 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 1 PM | 87.8 | 77.0 | 71 | 15 | - | 90 | 29.88 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 12 PM | 87.8 | 77.0 | 71 | 13 | - | 90 | 29.91 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 11 AM | 87.8 | 77.0 | 71 | 13 | - | 90 | 29.93 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 10 AM | 87.8 | 75.2 | 66 | 12 | - | 100 | 29.95 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 9 AM | 87.8 | 77.0 | 71 | 9 | - | 90 | 29.96 | 10.0 | 3,500 | 0.00 | 1 |
| Tue 6, 8 AM | 86.0 | 75.2 | 70 | 12 | - | 100 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Tue 6, 7 AM | 84.2 | 75.2 | 75 | 6 | - | 120 | 29.93 | 10.0 | 3,000 | 0.00 | 1 |
| Tue 6, 6 AM | 82.4 | 75.2 | 79 | 0 | - | - | 29.91 | 10.0 | 3,000 | 0.00 | 1 |
| Mon 5, 6 PM | 84.2 | 75.2 | 75 | 7 | - | 130 | 29.90 | 10.0 | 4,000 | 0.00 | 1 |
| Mon 5, 5 PM | 86.0 | 77.0 | 75 | 12 | - | 100 | 29.90 | 10.0 | 4,000 | 0.00 | 1 |
| Mon 5, 4 PM | 87.8 | 75.2 | 66 | 12 | - | 100 | 29.89 | 10.0 | 4,000 | 0.00 | 1 |
| Mon 5, 3 PM | 87.8 | 75.2 | 66 | 12 | - | 100 | 29.89 | 10.0 | 4,000 | 0.00 | 1 |
| Mon 5, 2 PM | 87.8 | 77.0 | 71 | 17 | - | 100 | 29.89 | 10.0 | 3,500 | 0.00 | 1 |
| Mon 5, 1 PM | 89.6 | 78.8 | 71 | 13 | - | 100 | 29.92 | 10.0 | 3,500 | 0.00 | 1 |
| Mon 5, 12 PM | 87.8 | 77.0 | 71 | 15 | - | 90 | 29.95 | 10.0 | 3,500 | 0.00 | 1 |
| Mon 5, 11 AM | 87.8 | 77.0 | 71 | 16 | - | 100 | 29.97 | 10.0 | 3,500 | 0.00 | 1 |
| Mon 5, 10 AM | 87.8 | 78.8 | 75 | 9 | - | 90 | 29.99 | 10.0 | 3,500 | 0.00 | 1 |
| Mon 5, 9 AM | 86.0 | 77.0 | 75 | 8 | - | 90 | 29.99 | 10.0 | 3,500 | 0.00 | 1 |
| Mon 5, 8 AM | 84.2 | 75.2 | 75 | 0 | - | - | 29.99 | 10.0 | 3,000 | 0.00 | 1 |
| Mon 5, 7 AM | 80.6 | 75.2 | 84 | 0 | - | - | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Mon 5, 6 AM | 78.8 | 73.4 | 84 | 0 | - | - | 29.96 | 10.0 | 3,000 | 0.00 | 1 |
| Sun 4, 6 PM | 82.4 | 73.4 | 74 | 0 | - | - | 29.98 | 10.0 | 3,000 | 0.00 | 1 |
| Sun 4, 5 PM | 82.4 | 71.6 | 70 | 6 | - | 170 | 29.97 | 10.0 | 3,000 | 0.00 | 1 |
| Sun 4, 4 PM | 82.4 | 73.4 | 74 | 7 | - | 120 | 29.96 | 10.0 | 3,000 | 0.00 | 1 |
| Sun 4, 3 PM | 84.2 | 69.8 | 62 | 13 | - | 110 | 29.94 | 10.0 | 3,000 | 0.00 | 1 |
| Sun 4, 2 PM | 80.6 | 71.6 | 74 | 10 | - | 120 | 29.95 | 10.0 | 3,000 | 0.00 | 1 |
| Sun 4, 1 PM | 78.8 | 73.4 | 84 | 8 | - | 80 | 29.97 | 7.0 | 2,000 | 0.00 | 1 |
| Sun 4, 12 PM | 80.6 | 75.2 | 84 | 10 | - | 140 | 29.99 | 7.0 | 1,800 | 0.00 | 1 |
| Sun 4, 11 AM | 82.4 | 73.4 | 74 | 15 | 21 | 170 | 30.01 | 7.0 | 1,800 | 0.00 | 1 |
| Sun 4, 10 AM | 86.0 | 75.2 | 70 | 13 | - | 90 | 30.02 | 10.0 | 3,500 | 0.00 | 1 |
| Sun 4, 9 AM | 84.2 | 73.4 | 70 | 7 | - | 80 | 30.03 | 10.0 | 3,500 | 0.00 | 1 |
| Sun 4, 8 AM | 84.2 | 73.4 | 70 | 0 | - | - | 30.02 | 10.0 | 3,500 | 0.00 | 1 |
| Sun 4, 7 AM | 80.6 | 75.2 | 84 | 0 | - | - | 30.01 | 10.0 | 3,500 | 0.00 | 1 |
| Sun 4, 6 AM | 78.8 | 75.2 | 89 | 0 | - | - | 30.00 | 10.0 | 3,500 | 0.00 | 1 |
| Day | High F | Low F | Highest dew point F | Lowest dew point F | Highest humidity % | Lowest humidity % | Average wind mph | Strongest gust mph |
|---|---|---|---|---|---|---|---|---|
| Oct 10 | 87.8 | 78.8 | 75.2 | 73.4 | 84 | 66 | 7 | 23 |
| Oct 9 | 89.6 | 80.6 | 77.0 | 73.4 | 79 | 63 | 8 | 24 |
| Oct 8 | 87.8 | 80.6 | 78.8 | 75.2 | 84 | 66 | 6 | - |
| Oct 7 | 89.6 | 78.8 | 75.2 | 71.6 | 84 | 59 | 5 | 18 |
| Oct 6 | 87.8 | 82.4 | 77.0 | 75.2 | 79 | 66 | 8 | 23 |
| Oct 5 | 89.6 | 78.8 | 78.8 | 73.4 | 84 | 66 | 6 | - |
| Oct 4 | 86.0 | 78.8 | 75.2 | 69.8 | 89 | 62 | 5 | 21 |
| Oct 3 | 87.8 | 80.6 | 75.2 | 73.4 | 79 | 63 | 6 | - |
| Oct 2 | 87.8 | 78.8 | 75.2 | 73.4 | 84 | 66 | 12 | 22 |
| Oct 1 | 89.6 | 78.8 | 77.0 | 73.4 | 84 | 63 | 12 | 25 |
| Sep 30 | 89.6 | 84.2 | 75.2 | 75.2 | 75 | 63 | 7 | 22 |
| Sep 29 | 89.6 | 80.6 | 78.8 | 73.4 | 79 | 66 | 7 | 21 |
| Sep 28 | 89.6 | 80.6 | 78.8 | 75.2 | 84 | 67 | 10 | 20 |
| Sep 27 | 89.6 | 80.6 | 78.8 | 73.4 | 89 | 63 | 6 | - |
| Sep 26 | 89.6 | 80.6 | 78.8 | 73.4 | 84 | 63 | 6 | - |
| Sep 25 | 89.6 | 80.6 | 77.0 | 69.8 | 84 | 52 | 10 | - |
| Sep 24 | 91.4 | 80.6 | 78.8 | 73.4 | 84 | 59 | 5 | - |
| Sep 23 | 87.8 | 80.6 | 78.8 | 75.2 | 84 | 66 | 8 | 22 |
| Sep 22 | 87.8 | 80.6 | 77.0 | 75.2 | 84 | 66 | 5 | - |
| Sep 21 | 87.8 | 80.6 | 77.0 | 73.4 | 84 | 66 | 17 | - |
| Sep 20 | 87.8 | 78.8 | 78.8 | 73.4 | 89 | 66 | 8 | 20 |
| Sep 19 | 87.8 | 80.6 | 77.0 | 75.2 | 84 | 66 | 6 | 16 |
| Sep 18 | 89.6 | 80.6 | 78.8 | 75.2 | 84 | 66 | 9 | - |
| Sep 17 | 91.4 | 77.0 | 77.0 | 73.4 | 94 | 56 | 8 | 25 |
| Sep 16 | 87.8 | 82.4 | 78.8 | 75.2 | 84 | 70 | 12 | 24 |
| Sep 15 | 87.8 | 82.4 | 77.0 | 73.4 | 79 | 66 | 11 | 31 |
| Sep 14 | 87.8 | 80.6 | 77.0 | 73.4 | 84 | 66 | 9 | 18 |
| Sep 13 | 87.8 | 82.4 | 78.8 | 75.2 | 79 | 70 | 11 | 22 |
| Sep 12 | 87.8 | 82.4 | 77.0 | 75.2 | 79 | 70 | 10 | 22 |
Station report
Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.
At 9 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.91 inHg and the temperature at 59.0 F.
FB-ENG-001, Fig. AAtmosphere in sectionThe whole standard atmosphere this station stands in, from the ground to the edge of space.
FB-ENG-003, Fig. CHydrostatic balanceWhy a barometer 9 ft up reads less: it weighs only the air above it.
On Oct 11 the noon sun stands 64 degrees above the horizon at 18.46 N, and the day is 11 h 41 min long. Level ground there takes 90 per cent of the noon sunlight a surface facing the sun would.
FB-ENG-007, Fig. ARadiation budgetWhere the sunlight that reaches this ground goes once it arrives.
An airport station, 9 ft above sea level. Its sensors, as its network builds them.
FB-INS-002, Fig. AASOSThe airport station in full: every sensor, and how long each reading is averaged.
FB-INS-001, Fig. AWhat an instrument isA surface station taken apart: what each of these sensors is.
FB-INS-009, Fig. AStevenson screen and sitingWhy the thermometer sits in a shield 5 ft over grass.
The instrumentWhat an instrument is FB-INS-001ASOS FB-INS-002Personal weather station FB-INS-003Stevenson screen and siting FB-INS-009
What it seesAtmosphere in section FB-ENG-001Hydrostatic balance FB-ENG-003Lapse rates and stability FB-ENG-005Radiation budget FB-ENG-007Coriolis as geometry FB-ENG-008Water vapour as a gas FB-ENG-011Thunderstorm FB-EVT-001Supercell FB-EVT-007Tornado FB-EVT-009Hurricane FB-EVT-043Nor'easter FB-EVT-066Blizzard FB-EVT-081Ice storm FB-EVT-084Coastal flood FB-EVT-105Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Cloud classification FB-SKY-001Cirrus FB-SKY-010Cirrocumulus FB-SKY-011Cirrostratus FB-SKY-012Altocumulus FB-SKY-013Altostratus FB-SKY-014Nimbostratus FB-SKY-015Stratocumulus FB-SKY-016Stratus FB-SKY-017Cumulus FB-SKY-018Cumulonimbus FB-SKY-019Species atlas FB-SKY-030Varieties atlas FB-SKY-031Supplementary features atlas FB-SKY-032Accessory clouds FB-SKY-033Special clouds FB-SKY-034Orographic clouds FB-SKY-035Wall cloud FB-SKY-040Cumulonimbus architecture FB-SKY-041Humidity variables FB-WAT-002Fog types FB-WAT-020