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San Juan Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in San Juan

Last Updated: 2026-06-03 18:31 (Local Time)

Live AQI

60AQI (US)

Air Quality is

Moderate

PM2.5 : 17 µg/m³

pm10 : 66 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

29 °C

Last Updated: 2026-06-03 18:31 (Local Time)

Rank506^th

Currently, San Juan ranks 506^th among the cities with the highest AQI levels in the world.

Map

San Juan

Major Air Pollutants
San Juan

Particulate Matter(PM₂.₅)

17µg/m³

Particulate Matter(PM₁₀)

66µg/m³

Carbon Monoxide(CO)

282ppb

Sulfur Dioxide(SO₂)

2ppb

Nitrogen Dioxide(NO₂)

6ppb

Ozone(O₃)

24ppb

AQI Graph

Historical Air Quality Data
San Juan

24 Hours

AQI (US)

San Juan

AQI (US)

02-06-2026Time03-06-2026

Time	San Juan
6:31pm	75
7:01pm	30
7:31pm	81
8:01pm	32
8:31pm	42
9:01pm	31
9:31pm	32
10:01pm	32
10:31pm	65
11:01pm	30
11:31pm	38
12:01am	66
12:31am	82
1:01am	30
1:31am	74
2:01am	30
2:31am	70
3:01am	48
3:31am	58
4:01am	65
4:31am	80
5:01am	71
5:31am	76
6:01am	60
6:31am	62
7:01am	87
7:31am	152
8:01am	30
8:31am	96
9:01am	30
9:31am	30
10:01am	32
10:31am	33
11:01am	32
11:31am	90
12:01pm	30
12:31pm	32
1:01pm	30
1:31pm	30
2:01pm	28
2:31pm	30
3:01pm	30
3:31pm	56
4:01pm	42
4:31pm	58
5:01pm	56
5:31pm	58
6:01pm	26
6:31pm	60

Min. AQI (US)6:01pm

152

Max. AQI (US)7:31am

Want air quality data?

AQI (US) Trends - Annual Air Quality Changes
San Juan, Puerto Rico, United States

AQI (US)

San Juan's Locations
Real-time Air Pollution Level

locations

Status

AQI (US)

PM₂.₅(µg/m³)

PM₁₀(µg/m³)

Temp.(°C)

Humi.(%)

Calle De Diego 444 Outside

Moderate

EMCT SEPA

Moderate

United States's Metro Cities
Air Quality Index

Chicago

Los Angeles

Minneapolis

Nashville

New Orleans

New York City

San Francisco

Washington

Air Quality Calendar 2026
San Juan

2026

AQI (US)

Health Advice For People Living In
San Juan

0Cigarettes per day

Weekly 0 Cigarettes

Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI (US)

Air PurifierTurn On
Car FilterMust
N95 MaskMust
Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

San Juan

Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)

Mid. Chances of Asthma

Asthma

Risk of Asthma symptoms is Mid. when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

Limit outdoor activities when AQI is poor.
Clean indoor air with an air purifier to reduce exposure.
Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

Exercise outdoors without a mask.
Stay in smoky areas with strong fumes.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2026
United States

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2026

World's Most PollutedCity Rankings (2025)

World's Most PollutedCountry Rankings(2025)

RankCityAQI Status

Standard Value

Caguas, Puerto Rico

Moderate

1xabove Standard

Douglas, Arizona

Moderate

15xbelow Standard

Catano, Puerto Rico

Moderate

1xabove Standard

Ocala, Florida

Moderate

15xbelow Standard

San Juan, Puerto Rico

Moderate

1xabove Standard

Meridian, Idaho

Moderate

15xbelow Standard

Nampa, Idaho

Moderate

15xbelow Standard

Tulsa, Oklahoma

Moderate

1xequal Standard

Garden City, Idaho

Moderate

15xbelow Standard

10.

Arlington, Texas

Moderate

1xequal Standard

Last Updated: 03 Jun 2026, 10:36 PM

AQI City Rankings

Air Quality Solutions For San Juan
Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

Prana Air offers the solutions of air quality monitoring and clean air machine for San Juan

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

San Juan's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store

Get it onGoogle Play

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at San Juan

Frequently Asked Questions About Air Quality

What is the current AQI (US) level in San Juan?

The current real-time AQI (US) level in San Juan is 60 (Moderate) due to recent rainfall by 0.01mm/hr. This was last updated 2026-06-03 18:31 (Local Time).

When was the best AQI (US) level in San Juan in the last 24 hours?

The best AQI (US) level was 26 (Good) at 6:01 PM (Local Time) during the last 24 hours.

When was the worst AQI (US) level in San Juan in the last 24 hours?

The worst AQI (US) level was 152 (Unhealthy) at 7:31 AM (Local Time) during the last 24 hours.

What is the current trend of AQI (US) levels in San Juan during last 24 hours?

The AQI (US) levels in San Juan have been fluctuating throughout the last 24 hours. The levels have increased by highest 152 at 7:31 AM (Local Time), lowest 26 at 6:01 PM (Local Time).

What actions are recommended as per the current AQI (US) level in San Juan?

Current AQI (US) levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.