What is the air quality in San José today?

The current Air Quality Index (AQI) in San José is 24 (Good). PM2.5 concentration is 5.8 µg/m³.

What is the temperature in San José right now?

The current temperature in San José is 26.7°C (feels like 26.7°C). Humidity is 81.6% and wind speed is 11.0 km/h.

Is it safe to go outside in San José?

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

Air Quality in San José, Costa Rica

Drizzle

26.7°C · 81.6% humidity

26.7°

Feels 26.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

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View AQI history for San José →

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

81.6%

Humidity

11.0 km/h

Wind N

1008.9 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for San José?

Temperature & Precipitation

PM2.55.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for San José?

10-21

26.7° 21.7°

10.63 mm

10-22

26.0° 21.7°

16.44 mm

10-23

29.0° 21.2°

3.06 mm

10-24

29.5° 21.6°

9.38 mm

10-25

29.0° 22.6°

10.37 mm

10-26

26.2° 21.8°

4.06 mm

10-27

21.9° 21.2°

41.5 mm

Both models agree Avg diff: 3.7°C

What cities are near San José?

24 Liberia 24 Cañas 24 Rivas 25 Nicoya 23 Quesada 24 Nueva Guinea 53 Puntarenas 53 Chacarita 32 Esparza 24 Juigalpa

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T18:38 UTC.