Air Quality in San Marcos, Guatemala
Rain
16.4°C · 96.2% humidity
16.4°
Feels 16.4°
75
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
San Marcos's air quality — share it
AQI Forecast
54
6pm
83
84
75
9pm
140
141
81
12am
82
82
82
3am
82
82
83
6am
83
66
54
9am
54
54
54
12pm
—
—
—
3pm
—
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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 1.6× the WHO 24-hour guideline of 15 µg/m³.
96.2%
Humidity
30.7 km/h
Wind NE
1014.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
23.6 µg/m³
PM10
79.9 µg/m³
050100150200300500
What is the weather forecast for San Marcos?
Temperature & Precipitation
PM2.523.6 µg/m³
×1.6 WHO
Moderate
PM1079.9 µg/m³
Moderate
UV INDEX0.7
Low
What is the 7-day forecast for San Marcos?
07-22
20.7° 15.7°
20.31 mm
07-23
22.5° 15.2°
10.56 mm
07-24
23.6° 15.3°
9.0 mm
07-25
22.9° 16.6°
14.56 mm
07-26
24.0° 15.5°
14.81 mm
07-27
21.0° 15.2°
13.56 mm
07-28
24.2° 16.6°
13.06 mm
Both models agree
Avg diff: 4.2°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 2026-07-22T03:40 UTC.