Air Quality in San Juan, Puerto Rico
Windy
25.7°C · 83.5% humidity
25.7°
Feels 25.7°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
San Juan's air quality — share it
AQI Forecast
34
11pm
34
34
31
2am
27
27
27
5am
27
27
25
8am
25
25
25
11am
25
27
34
2pm
34
34
27
5pm
27
27
25
8pm
27
27
San Juan's air quality is influenced by vehicle emissions, industrial activity, and seasonal agricultural burning. Pollution patterns vary with dry and wet seasons.
83.5%
Humidity
50.8 km/h
Wind ESE
1016.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.35 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for San Juan?
Temperature & Precipitation
PM2.57.35 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for San Juan?
07-22
31.0° 25.7°
0.75 mm
07-23
31.0° 27.1°
0.69 mm
07-24
31.0° 25.4°
3.5 mm
07-25
31.4° 26.0°
0.31 mm
07-26
30.1° 25.5°
1.81 mm
07-27
31.4° 25.3°
0.44 mm
07-28
31.1° 25.8°
0.69 mm
Both models agree
Avg diff: 1.3°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-22T06:27 UTC.