Current Conditions

San Marcos, San Salvador Department

86°F30°C
Hot

Feels like90°F32°C

Wind

NNE 4 mph7 km/h

Humidity

58%

Cloud Cover

28%

As of Thursday, August 13, 2026 at 8:28 AM CST

Today's Outlook

Day

Partly cloudy and hot, with a high of 94°F35°C and morning low of 77°F25°C. Light wind from the NE around 5 mph7 km/h. Heat risk in the afternoon.

Night

Partly cloudy, with a low around 84°F29°C. Light wind from the WSW around 4 mph6 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
HotHigh 94°F35°CLow 77°F25°CPrecip 0 in0 mmCloud 36%Wind NNE 4 mph7 km/hThursday: Partly cloudy and hot, with a high of 94°F35°C and morning low of 77°F25°C. Light wind from the NE around 5 mph7 km/h. Heat risk in the afternoon. Thursday Night: Partly cloudy, with a low around 84°F29°C. Light wind from the WSW around 4 mph6 km/h.
HotHigh 94°F35°CFeels 98°F37°CLow 78°F26°CPrecip 0.01 in0.2 mm9%Cloud 32%Wind N 4 mph7 km/hFriday: Partly cloudy and hot, with a high of 94°F35°C and morning low of 78°F26°C. Light wind from the NE around 5 mph8 km/h. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 79°F26°C. Light wind from the NW around 3 mph6 km/h.
DrizzleHigh 93°F34°CFeels 98°F37°CLow 79°F26°CPrecip 0.04 in1 mm31%Cloud 34%Wind N 5 mph7 km/hSaturday: Partly cloudy and hot, with a high of 93°F34°C and morning low of 79°F26°C. Light wind from the NNE around 5 mph8 km/h. 15% chance of drizzle in the afternoon. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 80°F26°C. Light wind from the NNW around 4 mph7 km/h. 31% chance of drizzle in the evening.
DrizzleHigh 94°F34°CLow 77°F25°CPrecip 0.01 in0.3 mm12%Cloud 63%Wind N 5 mph8 km/hSunday: Mostly cloudy and hot, with a high of 94°F34°C and morning low of 77°F25°C. Breezy from the NNE at 6 to 7 mph9 to 11 km/h. Humid. Sunday Night: Mostly cloudy, with a low around 78°F25°C. Light wind from the NNW around 4 mph7 km/h. 12% chance of drizzle overnight.
DrizzleHigh 93°F34°CLow 77°F25°CPrecip 0.02 in0.6 mm20%Cloud 90%Wind N 5 mph8 km/hMonday: Overcast and hot, with a high of 93°F34°C and morning low of 77°F25°C. Light wind from the NNE around 5 mph9 km/h. Humid. Monday Night: Overcast, with a low around 78°F25°C. Light wind from the NNW around 4 mph7 km/h. 20% chance of drizzle in the evening.
Light RainHigh 92°F33°CFeels 96°F35°CLow 77°F25°CPrecip 0.21 in5.4 mm85%Cloud 70%Wind NNE 4 mph7 km/hTuesday: Mostly cloudy and hot, with a high of 92°F33°C and morning low of 77°F25°C. Light wind from the NE around 5 mph8 km/h. 36% chance of drizzle in the afternoon. Heat risk in the afternoon. Tuesday Night: Mostly cloudy, with a low around 78°F26°C. Light wind from the N around 3 mph5 km/h. 85% chance of light rain throughout the night.
Light RainHigh 91°F33°CFeels 96°F35°CLow 77°F25°CPrecip 0.14 in3.5 mm51%Cloud 76%Wind NNE 4 mph7 km/hWednesday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 77°F25°C. Light wind from the NE around 5 mph8 km/h. 25% chance of drizzle in the afternoon. Heat risk in the afternoon. Wednesday Night: Overcast, with a low around 77°F25°C. Light wind from the N around 3 mph5 km/h. 51% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdayAug 1394°F35°C77°F25°C0 in0 mm· —36%HotNNE 4 mph7 km/h
FridayAug 1494°F35°C
Feels 98°F37°C
78°F26°C0.01 in0.2 mm· 9%32%HotN 4 mph7 km/h
SaturdayAug 1593°F34°C
Feels 98°F37°C
79°F26°C0.04 in1 mm· 31%34%DrizzleN 5 mph7 km/h
SundayAug 1694°F34°C77°F25°C0.01 in0.3 mm· 12%63%DrizzleN 5 mph8 km/h
MondayAug 1793°F34°C77°F25°C0.02 in0.6 mm· 20%90%DrizzleN 5 mph8 km/h
TuesdayAug 1892°F33°C
Feels 96°F35°C
77°F25°C0.21 in5.4 mm· 85%70%Light RainNNE 4 mph7 km/h
WednesdayAug 1991°F33°C
Feels 96°F35°C
77°F25°C0.14 in3.5 mm· 51%76%Light RainNNE 4 mph7 km/h
ThursdayAug 2093°F34°C
Feels 97°F36°C
77°F25°C0.08 in2.1 mm· 41%61%ShowersN 5 mph7 km/h
FridayAug 2193°F34°C
Feels 98°F37°C
78°F25°C0.1 in2.6 mm· 52%55%ShowersN 5 mph8 km/h
SaturdayAug 2293°F34°C
Feels 98°F36°C
77°F25°C0.11 in2.9 mm· 57%57%ShowersN 4 mph7 km/h
SundayAug 2393°F34°C
Feels 97°F36°C
77°F25°C0.06 in1.6 mm· 35%59%ShowersN 5 mph8 km/h
MondayAug 2493°F34°C
Feels 97°F36°C
77°F25°C0.07 in1.7 mm· 33%54%ShowersN 4 mph7 km/h
TuesdayAug 2593°F34°C
Feels 97°F36°C
77°F25°C0.07 in1.8 mm· 32%59%ShowersN 4 mph7 km/h
WednesdayAug 2693°F34°C
Feels 97°F36°C
78°F26°C0.08 in2.1 mm· 36%64%ShowersN 4 mph7 km/h
ThursdayAug 2793°F34°C
Feels 97°F36°C
78°F25°C0.11 in2.7 mm· 45%67%ShowersN 4 mph7 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 13.6611°N, 89.1825°W·Elevation: 733m·Timezone: America/El_Salvador·Population: 54,615