Air Quality in San Juan, United States

Windy
38.8°C · 25.5% humidity
38.8°
Feels 38.8°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast Calibrated
37 7pm
37
37
25 10pm
30
33
33 1am
34
35
35 4am
38
38
38 7am
39
39
37 10am
37
37
37 1pm
37
37
37 4pm
37
37
Station readings 49h ago
AQI 39
PM2.5 9.4 µg/m³ · 49h ago
AD 728×90

Air Quality Index Trend

42h · 2 stn

San Juan's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

25.5%
Humidity
93.2 km/h
Wind SSE
1010.4 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
6.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for San Juan?

Temperature & Precipitation

PM2.5 Trend

42h · 2 stations
PM2.56.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250

What is the 7-day forecast for San Juan?

08-03
38.8° 25.7°
08-04
35.3° 26.1°
08-05
37.6° 25.9°
08-06
35.2° 25.7°
08-07
38.5° 27.0°
08-08
37.1° 26.1°
08-09
37.0° 26.7°
1.5 mm
Both models agree Avg diff: 1.2°C

Where are air quality stations near San Juan?

16
Edinburg East Freddy Gonzalez Drive
11.1 km PM2.5: 3.8 µg/m³
42
Mission, Harlingen, Texas
14.2 km PM2.5: 10.1 µg/m³
65
Mission, Harlingen, Texas
14.2 km PM2.5: 18.8 µg/m³
47
Mission, Harlingen, Texas
14.2 km PM2.5: 11.3 µg/m³

What cities are near San Juan?

25 Pharr 25 Alamo 25 McAllen 25 Donna 25 Edinburg 25 Weslaco 25 Mission 25 Reynosa 28 Ciudad Río Bravo 28 Mercedes
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T03:57 UTC.