AQI PM2.5 PM10 CO SO2 NO2 O3

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Ctlr Okay Air Quality Index (AQI) | Air Pollution

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

Last Updated: 12 May 2025, 11:24am (Local Time)

Live AQI

Air Quality is

Good

pm10 : 13 µg/m³

PM2.5 : 5 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

8 °C

Last Updated: 12 May 2025, 11:24am (Local Time)

Map

Ctlr Okay

Major Air Pollutants
Ctlr Okay

Particulate Matter(PM2.5)

5µg/m³

Particulate Matter(PM10)

13µg/m³

Carbon Monoxide(CO)

39ppb

Sulfur Dioxide(SO2)

2ppb

Nitrogen Dioxide(NO2)

6ppb

Ozone(O3)

16ppb

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AQI Graph

Historical Air Quality Data
Ctlr Okay

24 Hours

AQI

Ctlr Okay

Want air quality data?

AQI Trends - Annual Air Quality Changes
Ctlr Okay, Leon, Castille Leon, Spain

AQI

Year

AQI

Annual AQI Trends

2020

29AQI

2021

26AQI

-10%

Fall

2023

19AQI

-27%

Fall

2024

28AQI

47%

Rise

2025

28AQI

No Change

Overall Annual Percentage (%) change of AQI in (2020 to 2025)

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedMarch, 202060AQI

Least PollutedMarch, 20241AQI

* This data analysis is from year 2020 - 2025

Spain's Metro Cities
Air Quality Index

Barcelona

Malaga

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Zaragoza

Air Quality Calendar 2025
Ctlr Okay

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 67	2 Jan 64	3 Jan 67	4 Jan 60
5 Jan 31	6 Jan 26	7 Jan 27	8 Jan 42	9 Jan 30	10 Jan 33	11 Jan 30
12 Jan 29	13 Jan 33	14 Jan 46	15 Jan 49	16 Jan 47	17 Jan 42	18 Jan 41
19 Jan 49	20 Jan 46	21 Jan 59	22 Jan 32	23 Jan 29	24 Jan 31	25 Jan 26
26 Jan 30	27 Jan 28	28 Jan 28	29 Jan 26	30 Jan 35	31 Jan 43	1 Feb 39

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 30	27 Jan 28	28 Jan 28	29 Jan 26	30 Jan 35	31 Jan 43	1 Feb 39
2 Feb 34	3 Feb 30	4 Feb 31	5 Feb 48	6 Feb 49	7 Feb 48	8 Feb 31
9 Feb 39	10 Feb 46	11 Feb 41	12 Feb 35	13 Feb 29	14 Feb 27	15 Feb 18
16 Feb 36	17 Feb 23	18 Feb 29	19 Feb 39	20 Feb 37	21 Feb 24	22 Feb 17
23 Feb 22	24 Feb 24	25 Feb 27	26 Feb 28	27 Feb 22	28 Feb 19	1 Mar 21

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 22	24 Feb 24	25 Feb 27	26 Feb 28	27 Feb 22	28 Feb 19	1 Mar 21
2 Mar 25	3 Mar 21	4 Mar 31	5 Mar 29	6 Mar 20	7 Mar 21	8 Mar 19
9 Mar 20	10 Mar 20	11 Mar 17	12 Mar 17	13 Mar 20	14 Mar 24	15 Mar 24
16 Mar 22	17 Mar 28	18 Mar 30	19 Mar 42	20 Mar 33	21 Mar 23	22 Mar 21
23 Mar 18	24 Mar 20	25 Mar 23	26 Mar 27	27 Mar 29	28 Mar 30	29 Mar 21
30 Mar 20	31 Mar 25	1 Apr 26	2 Apr 43	3 Apr 20	4 Apr 23	5 Apr 17

April

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

May

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

Health Advice For People Living In
Ctlr Okay

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

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

Ctlr Okay

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.

Most Polluted Cities 2025
Spain

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

Cintruenigo, Spain

Cadiz, Spain

Motril, Spain

Granada, Spain

Almonte, Spain

Huelva, Spain

Alicante, Spain

Palos De La Frontera, Spain

Palma, Spain

10.

Almeria, Spain

Good

2xabove Standard

Last Updated: 12 May 2025, 03:05 PM

AQI City Rankings

Air Quality Solutions For Ctlr Okay
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 Ctlr Okay

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 Ctlr Okay

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 Ctlr Okay

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 Ctlr Okay

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.

Ctlr Okay'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 Ctlr Okay

Frequently Asked Questions About Air Quality

What is the current AQI level in Ctlr Okay?

The current real-time AQI level in Ctlr Okay is 26 (Good) due to recent rainfall by 0.6mm/hr. This was last updated 12 May 2025, 11:24am (Local Time).

When was the best AQI level in Ctlr Okay in the last 24 hours?

The best AQI level was 14 (Good) at 5:09 PM, May 11, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Ctlr Okay in the last 24 hours?

The worst AQI level was 26 (Good) at 12:09 PM (Local Time) during the last 24 hours.

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

The AQI levels in Ctlr Okay have been fluctuating throughout the last 24 hours. The levels have increased by highest 26 at 12:09 PM (Local Time), lowest 14 at 5:09 PM, May 11, 2025 (Local Time).

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

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