Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in San Juan
Air quality index (AQI) and PM2.5 air pollution in San Juan
18 people follow this city
San Juan Air Quality Map
Real-time San Juan air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in San Juan today?
 | Index | Very high | |
 | Tree pollen | None | |
 | Grass pollen | Very high | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in San Juan?
| Weather | Clear sky |
| Temperature | 89.6°F |
| Humidity | 57% |
| Wind | 13.8 mp/h |
| Pressure | 29.6 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Duluth, Minnesota | 153 |
| 2 | Fort Thompson, South Dakota | 138 |
| 3 | Detroit Lakes, Minnesota | 135 |
| 4 | Hot Springs, South Dakota | 89 |
| 5 | Corpus Christi, Texas | 85 |
| 6 | Houghton, Michigan | 78 |
| 7 | La Habra, California | 78 |
| 8 | Hollywood, California | 74 |
| 9 | San Antonio, Texas | 73 |
| 10 | Boerne, Texas | 70 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Spotlight
Edinburg has "Unhealthy for Sensitive Groups" air quality. See the map and health recommendations.
US AQI
73*
live AQI index
Moderate
Overview
What is the current air quality in San Juan?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 73* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 20.8*µg/m³ | |
!
PM2.5
x4.2
PM2.5 concentration in San Juan is currently 4.2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in San Juan?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
San Juan air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 73 AQI US |  40% | 100.4° 75.2° |  17.9 mp/h |
| Monday, May 13 | Moderate 71 AQI US |  | 98.6° 75.2° | 17.9 mp/h |
| Tuesday, May 14 | Moderate 66 AQI US |  | 96.8° 75.2° | 17.9 mp/h |
| Wednesday, May 15 | Moderate 65 AQI US | | 100.4° 75.2° | 17.9 mp/h |
| Thursday, May 16 | Moderate 75 AQI US | | 102.2° 77° | 15.7 mp/h |
| Friday, May 17 | Moderate 71 AQI US | 20% | 98.6° 77° | 15.7 mp/h |
| Saturday, May 18 | Moderate 62 AQI US | 30% | 102.2° 77° | 15.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in San Juan?
No locations are available.
AQI US, Metric