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San Juan Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Puerto Rico

Last Updated: 2025-08-05 11:25:05 AM (Local Time)

Live AQI

59(AQI-US)

Air Quality is

Moderate

pm10 : 32 µg/m³

PM2.5 : 14 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

30 °C

Last Updated: 2025-08-05 11:25:05 AM (Local Time)

Map

San Juan

Major Air Pollutants
San Juan

Particulate Matter(PM2.5)

14µg/m³

Particulate Matter(PM10)

32µg/m³

Carbon Monoxide(CO)

1254ppb

Sulfur Dioxide(SO2)

2ppb

Nitrogen Dioxide(NO2)

8ppb

Ozone(O3)

12ppb

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AQI Graph

Historical Air Quality Data
San Juan

24 Hours

AQI

San Juan

AQI

04-08-2025Time05-08-2025

Time	San Juan
11 AM	57
12 PM	60
01 PM	60
02 PM	61
03 PM	59
04 PM	61
05 PM	58
06 PM	57
07 PM	59
08 PM	49
09 PM	54
10 PM	52
11 PM	52
12 AM	46
01 AM	54
02 AM	52
03 AM	54
04 AM	52
05 AM	49
06 AM	49
07 AM	53
08 AM	50
09 AM	55
10 AM	56
11 AM	58

Min.at 12:10 AM on 5th Aug

Max.at 2:10 PM on 4th Aug

Want air quality data?

AQI Trends - Annual Air Quality Changes
San Juan, Puerto Rico, Puerto Rico

AQI

Year

AQI

AQI	AQI
Oct 2022	10
Nov 2022	9
Dec 2022	11
Jan 2023	7
Feb 2023	7
Mar 2023	17
Apr 2023	14
May 2023	21
Jun 2023	20
Jul 2023	24
Aug 2023	19
Sep 2023	17
Oct 2023	7
Nov 2023	15
Dec 2023	9
Jan 2024	15
Feb 2024	25
Mar 2024	21
Apr 2024	28
May 2024	63
Jun 2024	34
Jul 2024	42
Aug 2024	31
Sep 2024	20
Oct 2024	22
Nov 2024	28
Dec 2024	34
Jan 2025	32
Feb 2025	33
Mar 2025	36
Apr 2025	37
May 2025	31
Jun 2025	46
Jul 2025	60
Aug 2025	48

Annual AQI Trends

2022

10AQI

2023

15AQI

50%

Rise

2024

32AQI

113%

Rise

2025

40AQI

25%

Rise

Overall Annual Percentage (%) change of AQI in (2022 to 2025)

63%

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedMay, 202463AQI

Least PollutedOctober, 20237AQI

* This data analysis is from year 2022 - 2025

San Juan's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Calle De Diego 444 Outside

Moderate

EMCT SEPA

Moderate

Puerto Rico's Metro Cities
Air Quality Index

Caguas

Catano

Ponce

San Juan

Air Quality Calendar 2025
San Juan

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 54	2 Jan 39	3 Jan 39	4 Jan 32
5 Jan 31	6 Jan 32	7 Jan 29	8 Jan 32	9 Jan 30	10 Jan 33	11 Jan 30
12 Jan 30	13 Jan 30	14 Jan 29	15 Jan 27	16 Jan 27	17 Jan 33	18 Jan 37
19 Jan 33	20 Jan 30	21 Jan 30	22 Jan 33	23 Jan 28	24 Jan 30	25 Jan 32
26 Jan 30	27 Jan 31	28 Jan 31	29 Jan 30	30 Jan 30	31 Jan 29	1 Feb 29

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 30	27 Jan 31	28 Jan 31	29 Jan 30	30 Jan 30	31 Jan 29	1 Feb 29
2 Feb 31	3 Feb 28	4 Feb 29	5 Feb 29	6 Feb 31	7 Feb 32	8 Feb 31
9 Feb 29	10 Feb 31	11 Feb 33	12 Feb 32	13 Feb 32	14 Feb 32	15 Feb 23
16 Feb 34	17 Feb 33	18 Feb 41	19 Feb 37	20 Feb 34	21 Feb 35	22 Feb 32
23 Feb 33	24 Feb 34	25 Feb 29	26 Feb 38	27 Feb 41	28 Feb 38	1 Mar 41

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 33	24 Feb 34	25 Feb 29	26 Feb 38	27 Feb 41	28 Feb 38	1 Mar 41
2 Mar 34	3 Mar 36	4 Mar 34	5 Mar 33	6 Mar 31	7 Mar 33	8 Mar 33
9 Mar 29	10 Mar 31	11 Mar 36	12 Mar 34	13 Mar 35	14 Mar 40	15 Mar 39
16 Mar 37	17 Mar 32	18 Mar 37	19 Mar 38	20 Mar 35	21 Mar 39	22 Mar 42
23 Mar 40	24 Mar 40	25 Mar 35	26 Mar 33	27 Mar 34	28 Mar 40	29 Mar 39
30 Mar 34	31 Mar 38	1 Apr 37	2 Apr 39	3 Apr 35	4 Apr 35	5 Apr 36

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 34	31 Mar 38	1 Apr 37	2 Apr 39	3 Apr 35	4 Apr 35	5 Apr 36
6 Apr 30	7 Apr 28	8 Apr 36	9 Apr 32	10 Apr 48	11 Apr 49	12 Apr 50
13 Apr 43	14 Apr 44	15 Apr 39	16 Apr 32	17 Apr 41	18 Apr 41	19 Apr 40
20 Apr 38	21 Apr 38	22 Apr 35	23 Apr 32	24 Apr 33	25 Apr 34	26 Apr 35
27 Apr 33	28 Apr 35	29 Apr 32	30 Apr 33	1 May 34	2 May 32	3 May 34

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 33	28 Apr 35	29 Apr 32	30 Apr 33	1 May 34	2 May 32	3 May 34
4 May 30	5 May 35	6 May 36	7 May 30	8 May 23	9 May 21	10 May 23
11 May 25	12 May 25	13 May 31	14 May 28	15 May 28	16 May 29	17 May 26
18 May 26	19 May 39	20 May 41	21 May 33	22 May 32	23 May 26	24 May 29
25 May 32	26 May 45	27 May 46	28 May 27	29 May 25	30 May 35	31 May 47

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 57	2 Jun 60	3 Jun 44	4 Jun 33	5 Jun 27	6 Jun 30	7 Jun 26
8 Jun 36	9 Jun 50	10 Jun 59	11 Jun 61	12 Jun 51	13 Jun 45	14 Jun 40
15 Jun 37	16 Jun 38	17 Jun 47	18 Jun 52	19 Jun 53	20 Jun 43	21 Jun 42
22 Jun 44	23 Jun 49	24 Jun 51	25 Jun 55	26 Jun 53	27 Jun 50	28 Jun 48
29 Jun 54	30 Jun 54	1 Jul 62	2 Jul 66	3 Jul 88	4 Jul 94	5 Jul 99

July

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Jun 54	30 Jun 54	1 Jul 62	2 Jul 66	3 Jul 88	4 Jul 94	5 Jul 99
6 Jul 100	7 Jul 111	8 Jul 110	9 Jul 93	10 Jul 75	11 Jul 70	12 Jul 62
13 Jul 61	14 Jul 48	15 Jul 38	16 Jul 47	17 Jul 50	18 Jul 43	19 Jul 38
20 Jul 35	21 Jul 38	22 Jul 37	23 Jul 36	24 Jul 45	25 Jul 46	26 Jul 46
27 Jul 45	28 Jul 49	29 Jul 42	30 Jul 45	31 Jul 38	1 Aug 46	2 Aug 54

August

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Jul 45	28 Jul 49	29 Jul 42	30 Jul 45	31 Jul 38	1 Aug 46	2 Aug 54
3 Aug 46	4 Aug 47	5 Aug -	6 Aug -	7 Aug -	8 Aug -	9 Aug -
10 Aug -	11 Aug -	12 Aug -	13 Aug -	14 Aug -	15 Aug -	16 Aug -
17 Aug -	18 Aug -	19 Aug -	20 Aug -	21 Aug -	22 Aug -	23 Aug -
24 Aug -	25 Aug -	26 Aug -	27 Aug -	28 Aug -	29 Aug -	30 Aug -
31 Aug -	1 Sep -	2 Sep -	3 Sep -	4 Sep -	5 Sep -	6 Sep -

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

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)

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild 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 2025
Puerto Rico

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

Most Polluted Cities Live Ranking 2025

World's Most PollutedCity Rankings (2024)

World's Most PollutedCountry Rankings(2024)

RankCityAQIAQI Status

Standard Value

San Juan, Puerto Rico

Ponce, Puerto Rico

Catano, Puerto Rico

Arecibo, Puerto Rico

Ceiba, Puerto Rico

Trujillo Alto, Puerto Rico

Catano, Puerto Rico

Bayamon, Puerto Rico

Caguas, Puerto Rico

10.

Mayaguez, Puerto Rico

Moderate

4xabove Standard

Last Updated: 05 Aug 2025, 03:31 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

air quality solutions for offices 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 institutes for San Juan

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.

air quality solutions for airport for San Juan

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 bathroom for San Juan

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 level in San Juan?

The current real-time AQI level in San Juan is 59 (Moderate). This was last updated 2025-08-05 11:25:05 AM (Local Time).

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

The best AQI level was 46 (Good) at 12:10 AM (Local Time) during the last 24 hours.

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

The worst AQI level was 61 (Moderate) at 2:10 PM, Aug 4, 2025 (Local Time) during the last 24 hours.

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

The AQI levels in San Juan have been fluctuating throughout the last 24 hours. The levels have increased by highest 61 at 2:10 PM, Aug 4, 2025 (Local Time), lowest 46 at 12:10 AM (Local Time).

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

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