Air Quality in San José, Costa Rica
Drizzle
25.4°C · 85.0% humidity
25.4°
Feels 25.4°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
San José's air quality — share it
AQI Forecast
24
12pm
24
24
25
3pm
24
25
25
6pm
24
24
25
9pm
25
25
27
12am
27
27
27
3am
27
27
27
6am
25
25
25
9am
25
25
San José's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
85.0%
Humidity
30.8 km/h
Wind SE
1008.8 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.9 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for San José?
Temperature & Precipitation
PM2.55.9 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
What is the 7-day forecast for San José?
05-29
27.5° 22.5°
10.31 mm
05-30
30.1° 22.9°
5.94 mm
05-31
31.5° 22.5°
0.19 mm
06-01
25.5° 23.0°
4.69 mm
06-02
31.2° 22.5°
22.44 mm
06-03
29.7° 22.6°
13.13 mm
06-04
30.2° 22.7°
4.06 mm
Both models agree
Avg diff: 3.2°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T21:09 UTC.