Air Quality in San Marcos, Guatemala
Cloudy
16.8°C · 82.0% humidity
16.8°
Feels 16.8°
74
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
San Marcos's air quality — share it
AQI Forecast
66
5am
83
84
74
8am
60
58
57
11am
36
56
55
2pm
35
35
34
5pm
54
66
83
8pm
83
83
83
11pm
66
66
66
2am
66
66
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 4.6× the WHO annual guideline of 5 µg/m³.
82.0%
Humidity
36.6 km/h
Wind NE
1013.9 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
23.15 µg/m³
PM10
73.05 µg/m³
050100150200300500
What is the weather forecast for San Marcos?
Temperature & Precipitation
PM2.523.15 µg/m³
×1.5 WHO
Moderate
PM1073.05 µg/m³
Moderate
UV INDEX6.9
High
What is the 7-day forecast for San Marcos?
05-29
23.9° 16.8°
42.63 mm
05-30
24.3° 16.5°
24.94 mm
05-31
24.1° 16.3°
16.62 mm
06-01
21.7° 17.4°
10.88 mm
06-02
24.6° 16.5°
17.06 mm
06-03
24.2° 16.8°
39.63 mm
06-04
23.6° 16.4°
15.13 mm
Both models agree
Avg diff: 4.4°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T14:41 UTC.