Air Quality in San Marcos, Guatemala
Drizzle
15.9°C · 90.2% humidity
15.9°
Feels 15.9°
66
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
San Marcos's air quality — share it
AQI Forecast
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San Marcos's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons. Current PM2.5 concentration in San Marcos is 1.3× the WHO 24-hour guideline of 15 µg/m³.
90.2%
Humidity
31.8 km/h
Wind NE
1011.3 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
19.2 µg/m³
PM10
41.2 µg/m³
050100150200300500
What is the weather forecast for San Marcos?
Temperature & Precipitation
PM2.519.2 µg/m³
×1.3 WHO
Moderate
PM1041.2 µg/m³
Good
UV INDEX0.0
Low
What is the 7-day forecast for San Marcos?
10-21
21.5° 15.9°
25.62 mm
10-22
22.5° 16.0°
31.13 mm
10-23
22.4° 15.0°
15.75 mm
10-24
21.2° 15.6°
9.94 mm
10-25
21.5° 16.0°
42.25 mm
10-26
19.6° 15.9°
14.06 mm
10-27
23.8° 15.2°
6.44 mm
Both models agree
Avg diff: 4.8°C
What cities are near San Marcos?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T15:02 UTC.