Current Conditions

San Marcos, San Salvador Department

91°F33°C
Drizzle

Wind

ESE 5 mph8 km/h

Humidity

41%

Cloud Cover

90%

As of Thursday, July 23, 2026 at 11:56 AM CST

Today's Outlook

Day

Overcast and hot, with a high of 91°F33°C and morning low of 76°F25°C. Light wind from the ESE around 5 mph7 km/h. Humid.

Night

Overcast, with a low around 81°F27°C. Light wind from the SSW around 4 mph7 km/h. 35% chance of drizzle throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ThursdayJul 23DrizzleHigh 91°F33°CFeels 94°F34°CLow 76°F25°CPrecip 0.02 in0.6 mm35%Cloud 89%Wind SSE 5 mph7 km/hThursday: Overcast and hot, with a high of 91°F33°C and morning low of 76°F25°C. Light wind from the ESE around 5 mph7 km/h. Humid. Thursday Night: Overcast, with a low around 81°F27°C. Light wind from the SSW around 4 mph7 km/h. 35% chance of drizzle throughout the night.
FridayJul 24ShowersHigh 91°F33°CFeels 95°F35°CLow 76°F24°CPrecip 0.21 in5.4 mm70%Cloud 63%Wind W 3 mph5 km/hFriday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 76°F24°C. Light wind from the W around 3 mph6 km/h. 52% chance of showers in the morning. Humid. Friday Night: Mostly cloudy, with a low around 76°F25°C. Light wind from the W around 3 mph4 km/h. 70% chance of light rain throughout the night.
SaturdayJul 25Light RainHigh 89°F32°CFeels 94°F34°CLow 77°F25°CPrecip 0.16 in4 mm69%Cloud 91%Wind ENE 4 mph6 km/hSaturday: Overcast and hot, with a high of 89°F32°C and morning low of 77°F25°C. Light wind from the E around 5 mph8 km/h. 43% chance of light rain around midday. Humid. Saturday Night: Overcast, with a low around 77°F25°C. Light wind from the N around 3 mph4 km/h. 69% chance of light rain throughout the night.
SundayJul 26DrizzleHigh 91°F33°CFeels 96°F35°CLow 77°F25°CPrecip 0.07 in1.8 mm36%Cloud 87%Wind NNW 3 mph5 km/hSunday: Overcast and hot, with a high of 91°F33°C and morning low of 77°F25°C. Light wind from the ENE around 4 mph6 km/h. 36% chance of drizzle in the afternoon. Heat risk in the afternoon. Sunday Night: Overcast, with a low around 77°F25°C. Light wind from the NW around 3 mph5 km/h. 36% chance of drizzle throughout the night.
MondayJul 27ShowersHigh 91°F33°CFeels 96°F35°CLow 78°F25°CPrecip 0.07 in1.7 mm42%Cloud 68%Wind NNW 4 mph6 km/hMonday: Mostly cloudy and hot, with a high of 91°F33°C and morning low of 78°F25°C. Light wind from the ENE around 4 mph6 km/h. 20% chance of drizzle in the afternoon. Heat risk in the afternoon. Monday Night: Mostly cloudy, with a low around 78°F26°C. Light wind from the NW around 3 mph5 km/h. 42% chance of light rain in the evening.
TuesdayJul 28ShowersHigh 90°F32°CFeels 95°F35°CLow 76°F25°CPrecip 0.13 in3.2 mm45%Cloud 47%Wind ENE 3 mph5 km/hTuesday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 76°F25°C. Light wind from the ESE around 4 mph6 km/h. 42% chance of drizzle throughout the day. Humid. Tuesday Night: Mostly cloudy, with a low around 77°F25°C. Light wind from the NW around 3 mph4 km/h. 45% chance of showers throughout the night.
WednesdayJul 29ShowersHigh 91°F33°CFeels 97°F36°CLow 76°F25°CPrecip 0.11 in2.7 mm58%Cloud 37%Wind NNE 3 mph5 km/hWednesday: Partly cloudy and hot, with a high of 91°F33°C and morning low of 76°F25°C — feels like 97°F36°C. Light wind from the E around 4 mph6 km/h. 41% chance of showers in the afternoon. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 77°F25°C. Light wind from the NNW around 3 mph4 km/h. 58% chance of showers throughout the night.

15-Day Forecast

Day High (°F) Low (°F) Precip (mm) Cloud Cover (%) Condition Wind (mph)

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