Air Quality in San Juan, United States

Drizzle
34.0°C · 41.0% humidity
34.0°
Feels 37.2°
39
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
27 5pm
27
27
39 8pm
31
30
29 11pm
28
28
28 2am
27
27
27 5am
27
27
27 8am
27
34
34 11am
34
34
54 2pm
34
34
AD 728×90

Air Quality Index Trend

42h · 1 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.

41.0%
Humidity
119.6 km/h
Wind ESE
1009.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
39
9.4 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for San Juan?

Temperature & Precipitation

PM2.5 Trend

42h · 1 station
PM2.59.4 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (1 station within 25 km)
9.4
Median
9.4
Average
9.4
Low
9.4
High
PM2.5 µg/m³ · Model: 8.2 · Bias: -1.2

What is the 7-day forecast for San Juan?

06-09
36.4° 22.1°
0.19 mm
06-10
36.4° 25.5°
06-11
34.8° 25.5°
0.5 mm
06-12
35.6° 24.6°
06-13
34.8° 24.9°
0.13 mm
06-14
36.2° 24.0°
06-15
36.6° 25.6°
Both models agree Avg diff: 1.5°C

Where are air quality stations near San Juan?

40
Edinburg East Freddy Gonzalez Drive
11.1 km PM2.5: 9.7 µg/m³
23
Mission, Harlingen, Texas
14.2 km PM2.5: 5.5 µg/m³
35
Mission, Harlingen, Texas
14.2 km PM2.5: 8.4 µg/m³

What cities are near San Juan?

39 Pharr 39 Alamo 39 McAllen 39 Donna 39 Edinburg 34 Weslaco 39 Mission 39 Reynosa 39 Ciudad Río Bravo 42 Mercedes
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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 2026-06-09T01:06 UTC.