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
84
9pm
146
146
75
12am
78
79
80
3am
81
81
82
6am
82
65
54
9am
54
54
54
12pm
54
54
54
3pm
54
54
54
6pm
66
83
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
73.05 µg/m³
050100150200300500
What is the weather forecast for San Marcos?
Temperature & Precipitation
PM2.523.6 µg/m³
×1.6 WHO
Moderate
PM1073.05 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 2026-07-22T06:04 UTC.