Air Quality in San Marcos, El Salvador
Rain
19.9°C · 98.7% humidity
19.9°
Feels 19.9°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
San Marcos's air quality — share it
AQI Forecast
34
3am
27
27
40
6am
38
30
29
9am
29
28
28
12pm
28
27
25
3pm
25
25
27
6pm
27
25
27
9pm
27
27
25
12am
25
25
San Marcos's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
98.7%
Humidity
12.6 km/h
Wind NNW
1012.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.56 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for San Marcos?
Temperature & Precipitation
PM2.59.56 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for San Marcos?
06-09
31.3° 19.9°
6.06 mm
06-10
25.9° 20.6°
20.25 mm
06-11
21.0° 19.6°
25.88 mm
06-12
21.0° 19.4°
7.56 mm
06-13
25.0° 19.3°
65.19 mm
06-14
26.2° 18.4°
10.44 mm
06-15
31.2° 19.9°
11.94 mm
Both models agree
Avg diff: 2.5°C
Where are air quality stations near San Marcos?
66
el-salvador-centro-histórico-1a-calle-poniente
87
el-salvador-residencial-monte-bello-calle-principal-la-gloria
What cities are near San Marcos?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T12:33 UTC.