What is the air quality in San Marcos today?

The current Air Quality Index (AQI) in San Marcos is 79 (Moderate). PM2.5 concentration is 25.36 µg/m³.

What is the temperature in San Marcos right now?

The current temperature in San Marcos is 25.2°C (feels like 25.2°C). Humidity is 52.0% and wind speed is 45.1 km/h.

Air Quality in San Marcos, GT

Windy

25.2°C · 52.0% humidity

25.2°

Feels 25.2°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

75 3pm

50 6pm

50 9pm

75 12am

136

156 3am

156

178

156 6am

136

99 9am

75 12pm

52.0%

Humidity

45.1 km/h

Wind SW

1013.1 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for San Marcos?

Temperature & Precipitation

PM2.525.36 µg/m³ ×1.7 WHO

Moderate

PM1027.4 µg/m³

Good

UV INDEX0.7

Low

What is the 7-day forecast for San Marcos?

04-09

25.2° 15.4°

6.88 mm

04-10

25.5° 15.4°

3.94 mm

04-11

25.6° 15.4°

3.81 mm

04-12

25.9° 16.4°

0.44 mm

04-13

24.7° 17.1°

1.88 mm

04-14

24.4° 16.9°

4.81 mm

04-15

23.2° 17.2°

15.69 mm

Both models agree Avg diff: 5.7°C

What cities are near San Marcos?

79 San Pedro Sacatepéquez 61 Comitancillo 33 Cabricán 108 Ostuncalco 108 La Esperanza 67 Malacatán 78 Colomba 78 Coatepeque 108 Quetzaltenango 57 San Andrés Xecul

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T18:39 UTC.