AQI PM2.5 PM10 CO SO2 NO2 O3

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Sliven Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-05-28 08:09:02 PM (Local Time)

Live AQI

Air Quality is

Good

pm10 : 13 µg/m³

PM2.5 : 8 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

14 °C

Last Updated: 2025-05-28 08:09:02 PM (Local Time)

Map

Sliven

Major Air Pollutants
Sliven

Particulate Matter(PM2.5)

8µg/m³

Particulate Matter(PM10)

13µg/m³

Carbon Monoxide(CO)

168ppb

Sulfur Dioxide(SO2)

2ppb

Nitrogen Dioxide(NO2)

6ppb

Ozone(O3)

21ppb

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AQI Graph

Historical Air Quality Data
Sliven

24 Hours

AQI

Sliven

Want air quality data?

AQI Trends - Annual Air Quality Changes
Sliven, Sliven Province, Bulgaria

AQI

Year

AQI

Annual AQI Trends

2020

11AQI

2021

12AQI

Rise

2022

9AQI

-25%

Fall

2023

21AQI

133%

Rise

2024

29AQI

38%

Rise

2025

57AQI

97%

Rise

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

50%

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedJanuary, 202570AQI

Least PollutedAugust, 20226AQI

* This data analysis is from year 2020 - 2025

Sliven's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Mladost

Good

Bulgaria's Metro Cities
Air Quality Index

Burgas

Dobrich

Sofia

Varna

Air Quality Calendar 2025
Sliven

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 88	2 Jan 82	3 Jan 79	4 Jan 73
5 Jan 68	6 Jan 67	7 Jan 69	8 Jan 70	9 Jan 70	10 Jan 70	11 Jan 66
12 Jan 62	13 Jan 60	14 Jan 58	15 Jan 58	16 Jan 59	17 Jan 61	18 Jan 66
19 Jan 71	20 Jan 71	21 Jan 73	22 Jan 75	23 Jan 76	24 Jan 77	25 Jan 75
26 Jan 73	27 Jan 72	28 Jan 72	29 Jan 68	30 Jan 69	31 Jan 70	1 Feb 74

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 73	27 Jan 72	28 Jan 72	29 Jan 68	30 Jan 69	31 Jan 70	1 Feb 74
2 Feb 72	3 Feb 72	4 Feb 69	5 Feb 67	6 Feb 64	7 Feb 63	8 Feb 62
9 Feb 61	10 Feb 60	11 Feb 61	12 Feb 61	13 Feb 62	14 Feb 62	15 Feb 64
16 Feb 64	17 Feb 62	18 Feb 61	19 Feb 60	20 Feb 60	21 Feb 59	22 Feb 59
23 Feb 59	24 Feb 60	25 Feb 62	26 Feb 67	27 Feb 66	28 Feb 68	1 Mar 68

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 59	24 Feb 60	25 Feb 62	26 Feb 67	27 Feb 66	28 Feb 68	1 Mar 68
2 Mar 63	3 Mar 61	4 Mar 60	5 Mar 62	6 Mar 62	7 Mar 61	8 Mar 61
9 Mar 63	10 Mar 63	11 Mar 63	12 Mar 63	13 Mar 61	14 Mar 60	15 Mar 58
16 Mar 56	17 Mar 54	18 Mar 51	19 Mar 48	20 Mar 48	21 Mar 51	22 Mar 53
23 Mar 53	24 Mar 54	25 Mar 56	26 Mar 58	27 Mar 58	28 Mar 58	29 Mar 57
30 Mar 56	31 Mar 56	1 Apr 54	2 Apr 52	3 Apr 52	4 Apr 51	5 Apr 50

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 56	31 Mar 56	1 Apr 54	2 Apr 52	3 Apr 52	4 Apr 51	5 Apr 50
6 Apr 46	7 Apr 42	8 Apr 42	9 Apr 42	10 Apr 43	11 Apr 39	12 Apr 36
13 Apr 37	14 Apr 39	15 Apr 40	16 Apr 44	17 Apr 44	18 Apr 42	19 Apr 42
20 Apr 42	21 Apr 41	22 Apr 41	23 Apr 41	24 Apr 42	25 Apr 43	26 Apr 43
27 Apr 41	28 Apr 39	29 Apr 37	30 Apr 37	1 May 43	2 May 45	3 May 62

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 41	28 Apr 39	29 Apr 37	30 Apr 37	1 May 43	2 May 45	3 May 62
4 May 50	5 May 51	6 May 53	7 May 52	8 May 53	9 May 57	10 May 57
11 May 48	12 May 54	13 May 53	14 May 52	15 May 53	16 May 54	17 May 49
18 May 53	19 May 52	20 May 57	21 May 53	22 May 55	23 May 53	24 May 52
25 May 51	26 May 43	27 May 42	28 May -	29 May -	30 May -	31 May -

Health Advice For People Living In
Sliven

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.

Prevent Health Problems: Understand Your Risks

Sliven

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
Bulgaria

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

Lovech, Bulgaria

Smolyan, Bulgaria

Dimitrovgrad, Bulgaria

Plovdiv, Bulgaria

Tsarevo, Bulgaria

Sliven, Bulgaria

Gorna Oryahovitsa, Bulgaria

Chepelare, Bulgaria

Kardzhali, Bulgaria

10.

Vratsa, Bulgaria

Good

3xabove Standard

Last Updated: 28 May 2025, 05:18 PM

AQI City Rankings

Air Quality Solutions For Sliven
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 Sliven

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 Sliven

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 Sliven

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 Sliven

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.

Sliven'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

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 Sliven

Frequently Asked Questions About Air Quality

What is the current AQI level in Sliven?

The current real-time AQI level in Sliven is 43 (Good). This was last updated 2025-05-28 08:09:02 PM (Local Time).

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

The best AQI level was 38 (Good) at 4:09 PM (Local Time) during the last 24 hours.

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

The worst AQI level was 55 (Moderate) at 1:09 AM (Local Time) during the last 24 hours.

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

The AQI levels in Sliven have been fluctuating throughout the last 24 hours. The levels have increased by highest 55 at 1:09 AM (Local Time), lowest 38 at 4:09 PM (Local Time).

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

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