Live

Monterrey Air Quality Index (AQI) | Air Pollution

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

Last Updated: 31 Jul 2025, 05:10pm (Local Time)

Live AQI

Air Quality is

Good

pm10 : 20 µg/m³

PM2.5 : 9 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

26 °C

Last Updated: 31 Jul 2025, 05:10pm (Local Time)

Map

Monterrey

Major Air Pollutants
Monterrey

Particulate Matter(PM2.5)

9µg/m³

Particulate Matter(PM10)

20µg/m³

Carbon Monoxide(CO)

223ppb

Sulfur Dioxide(SO2)

1ppb

Nitrogen Dioxide(NO2)

5ppb

Ozone(O3)

34ppb

Trending in Costa Rica

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Free Air Quality Monitor from AQI.in: How Anyone Can Track Pollution?

AQI Graph

Historical Air Quality Data
Monterrey

24 Hours

AQI

Monterrey

AQI

30-07-2025Time31-07-2025

Time	Monterrey
06 PM	43
07 PM	43
08 PM	36
09 PM	35
10 PM	36
11 PM	34
12 AM	36
01 AM	38
02 AM	32
03 AM	31
04 AM	27
05 AM	30
06 AM	42
07 AM	43
08 AM	46
09 AM	52
10 AM	52
11 AM	52
12 PM	53
01 PM	46
02 PM	51
03 PM	50
04 PM	45
05 PM	48

Min.at 4:10 AM on 31st Jul

Max.at 12:10 PM on 31st Jul

Want air quality data?

AQI Trends - Annual Air Quality Changes
Monterrey, San Pedro, San Jose, Costa Rica

AQI

Year

AQI

AQI	AQI
May 2025	42
Jun 2025	39
Jul 2025	37

Annual AQI Trends

2025

39AQI

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

NaN%

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedMay, 202542AQI

Least PollutedJuly, 202537AQI

* This data analysis is from year 2025 - 2025

Air Quality Calendar 2025
Monterrey

2025

AQI

January

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

February

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

March

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

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar -	31 Mar -	1 Apr -	2 Apr -	3 Apr -	4 Apr -	5 Apr -
6 Apr -	7 Apr -	8 Apr -	9 Apr -	10 Apr -	11 Apr -	12 Apr -
13 Apr -	14 Apr -	15 Apr -	16 Apr -	17 Apr -	18 Apr -	19 Apr -
20 Apr -	21 Apr -	22 Apr -	23 Apr -	24 Apr -	25 Apr -	26 Apr -
27 Apr -	28 Apr -	29 Apr -	30 Apr -	1 May -	2 May -	3 May -

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr -	28 Apr -	29 Apr -	30 Apr -	1 May -	2 May -	3 May -
4 May -	5 May -	6 May -	7 May -	8 May -	9 May -	10 May -
11 May -	12 May -	13 May -	14 May -	15 May -	16 May -	17 May -
18 May -	19 May -	20 May -	21 May -	22 May -	23 May -	24 May -
25 May -	26 May -	27 May -	28 May -	29 May 41	30 May 42	31 May 44

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 40	2 Jun 43	3 Jun 41	4 Jun 43	5 Jun 44	6 Jun 37	7 Jun 36
8 Jun 37	9 Jun 36	10 Jun 40	11 Jun 40	12 Jun 42	13 Jun 43	14 Jun 44
15 Jun 43	16 Jun 42	17 Jun 44	18 Jun 43	19 Jun 41	20 Jun 38	21 Jun 36
22 Jun 33	23 Jun 34	24 Jun 40	25 Jun 39	26 Jun 37	27 Jun 35	28 Jun 37
29 Jun 37	30 Jun 36	1 Jul 36	2 Jul 32	3 Jul 34	4 Jul 35	5 Jul 38

July

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Jun 37	30 Jun 36	1 Jul 36	2 Jul 32	3 Jul 34	4 Jul 35	5 Jul 38
6 Jul 41	7 Jul 41	8 Jul 41	9 Jul 45	10 Jul 35	11 Jul 44	12 Jul 43
13 Jul 47	14 Jul 38	15 Jul 37	16 Jul 37	17 Jul 36	18 Jul 32	19 Jul 35
20 Jul 37	21 Jul 38	22 Jul 36	23 Jul 40	24 Jul 37	25 Jul 35	26 Jul 37
27 Jul 34	28 Jul 31	29 Jul 31	30 Jul 35	31 Jul -	1 Aug -	2 Aug -

Health Advice For People Living In
Monterrey

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 Off
Car FilterAdvisable
N95 MaskAdvisable
Stay IndoorAdvisable

As per the current AQI, turn off the air purifier.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Monterrey

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

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

Keep track of air quality to plan outdoor activities safely.
Drink water to keep airways moist and reduce irritation.
Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

Skip medications that is prescribed by your doctor.
Engage in outdoor activities in early morning during high pollen hours.

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
Costa Rica

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

Santa Ana, Costa Rica

San Jose, Costa Rica

San Pedro, Costa Rica

Good

3xabove Standard

Last Updated: 31 Jul 2025, 11:22 PM

AQI City Rankings

Air Quality Solutions For Monterrey
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 Monterrey

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 Monterrey

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 Monterrey

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 Monterrey

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.

Monterrey'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 Monterrey

Frequently Asked Questions About Air Quality

What is the current AQI level in Monterrey?

The current real-time AQI level in Monterrey is 48 (Good) due to recent rainfall by 0.28mm/hr. This was last updated 31 Jul 2025, 05:10pm (Local Time).

When was the best AQI level in Monterrey in the last 24 hours?

The best AQI level was 27 (Good) at 4:10 AM (Local Time) during the last 24 hours.

When was the worst AQI level in Monterrey in the last 24 hours?

The worst AQI level was 53 (Moderate) at 12:10 PM (Local Time) during the last 24 hours.

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

The AQI levels in Monterrey have been fluctuating throughout the last 24 hours. The levels have increased by highest 53 at 12:10 PM (Local Time), lowest 27 at 4:10 AM (Local Time).

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

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.