What is the air quality in San Isidro today?

The current Air Quality Index (AQI) in San Isidro is 23 (Good). PM2.5 concentration is 5.45 µg/m³.

What is the temperature in San Isidro right now?

The current temperature in San Isidro is 17.3°C (feels like 17.3°C). Humidity is 93.6% and wind speed is 24.7 km/h.

Is it safe to go outside in San Isidro?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in San Isidro, Costa Rica

Drizzle

17.3°C · 93.6% humidity

17.3°

Feels 17.3°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

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View AQI history for San Isidro →

San Isidro's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.

93.6%

Humidity

24.7 km/h

Wind SSW

1013.8 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.45 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for San Isidro?

Temperature & Precipitation

PM2.55.45 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for San Isidro?

10-21

17.3° 15.0°

11.0 mm

10-22

17.5° 14.5°

17.75 mm

10-23

18.0° 14.2°

49.94 mm

10-24

19.3° 15.3°

41.63 mm

10-25

19.4° 14.9°

14.94 mm

10-26

18.7° 15.2°

35.5 mm

10-27

17.8° 14.3°

2.5 mm

Both models agree Avg diff: 7.4°C

What cities are near San Isidro?

27 Paraíso 23 Turrialba 27 Cartago 27 San Diego 27 Patarrá 27 San Miguel 27 Aserrí 27 San Rafael Arriba 27 San Juan de Dios 27 Curridabat

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T20:33 UTC.