Weather archive in San Salvador / Ilopango (airport)
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| Date / Local time | T | Po | P | Pa | U | DD | Ff | ff10 | ff3 | N | WW | W1 | W2 | Tn | Tx | Cl | Nh | H | Cm | Ch | VV | Td | RRR | tR | E | Tg | E' | sss | |
| 2026 September 21, Monday | 18 | 23.4 74 | 706.2 27.8 941.52 941.52 | 0.2 0.01 0.27 0.27 | 89 | Wind blowing from the south-southwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | State of sky on the whole unchanged. | Thunderstorm(s) with or without precipitation. | Rain. | 21.0 70 | 27.4 81 | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 300-600 984-1968 | Altocumulus translucidus at a single level. | Cirrostratus covering the whole sky. | 30.0 18.6 | 21.5 71 | 0.2 0.01 | 6 | Surface of ground moist. | ||||||
15 | 25.0 77 | 706.0 27.8 941.26 941.26 | -2.4 -0.09 -3.2 -3.2 | 86 | Wind blowing from the south | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Rain. | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 70 – 80%. 7/10 – 8/10. 6 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 5.0 3.1 | 22.4 72 | Surface of ground moist. | |||||||||||
12 | 25.2 77 | 708.4 27.89 944.46 944.46 | -0.6 -0.02 -0.8 -0.8 | 80 | Wind blowing from the east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | Precipitation within sight, reaching the ground or the surface of the sea, near to, but not at the station. | Rain. | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | 5.0 3.1 | 21.4 71 | 74.0 2.91 | 18 | Surface of ground moist. | |||||||||||
09 | 24.6 76 | 709.0 27.91 945.26 945.26 | 84 | Calm, no wind | Calm | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | State of sky on the whole unchanged. | Fog or ice fog or thick haze. | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 20.0 12.4 | 21.8 71 | Surface of ground moist. | |||||||||||||