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  • Romania
  • Valcea
  • Horezu
  • O3
Horezu
AQIHistoryPM2.5PM10COSO2NO2O3
Live

Horezu Ozone (O3) Level

Valcea, Romania

location image
O3's Icon
Ozone (O3)

16ppb



Good

Last Updated: 2025-07-18 08:25:08 PM (Local Time)

Good O3 level in Horezu
AQI LogoMap

Horezu

Good
050
Moderate
100
Poor
168
Unhealthy
208
Severe
748
Hazardous
1250+

What is the Current O3 Level?

Horezu

The current O3 level in Horezu based on the average air quality level across the city is 16 ppb, making it healthy and safe for everyone.


3.1xBelow

The current O3 level in Horezu is 3.1x Below the recommended WHO guideline of 50.96 ppb.

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AQI Graph

Historical Air Quality Data

Horezu

24 Hours
O3
Horezu
O3 (ppb)
.
17-07-2025Time18-07-2025
TimeHorezu
08 PM16
09 PM16
10 PM17
11 PM15
12 AM16
01 AM16
02 AM16
03 AM17
04 AM18
05 AM17
06 AM18
07 AM16
08 AM16
09 AM17
10 AM17
11 AM17
12 PM18
01 PM17
02 PM17
03 PM18
04 PM18
05 PM17
06 PM16
07 PM16
08 PM16
15
Min.at 11:10 PM on 17th Jul
18
Max.at 4:11 AM on 18th Jul

0/24

Hours

Hours in which the exposure is above the recommended WHO daily guideline 50.96ppb.

WHO Guideline

Want air quality data?

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Download 2024 Annual Data

World Air Quality Report

Globe

Do you know that Ozone's total mass is 3 billion metric tons in the atmosphere? It looks like a lot but has only 0.00006% of the atmosphere. Besides, Ozone's peak concentration is 32 kilometres above the Earth's surface.

PM Image

Uncovering the Sources of Ozone (O3): Where Does It Come From?

Refineries

Refineries

Industrial processes emit substances.
Power plants

Power plants

Emissions from burning fossil fuels.
Paints evaporations

Paints evaporations

Vocs from paints react with sunlight.
Transportation

Transportation

Diesel operated vehicles reacts and form ozone.

Short-Term O3 Exposure Impacts

Chest pain

Chest pain

Discomfort or pain in the chest due to respiratory stress.
Breathing shortness

Breathing shortness

Difficulty in breathing or feeling of breathlessness.
Respiratory irritation

Respiratory irritation

Inflammation and irritation of the respiratory tract.
Wheezing and coughing

Wheezing and coughing

Whistling sound and persistent cough.
Trigger asthma attacks

Trigger asthma attacks

Aggravation of asthma symptoms.

Health Advice Based on Current O3 Level In

Horezu

  • Air Purifier
    Air PurifierTurn Off
  • Car Filter
    Car FilterAdvisable
  • N95 Mask
    N95 MaskAdvisable
  • Stay Indoor
    Stay IndoorAdvisable

As per the current O3, turn off the air purifier.

Get an Air Purifier

Recommendations by Prana Air Logo

O3 Monitor

O3 Monitor

Check real-time O3 levels to ensure you're breathing clean air.

O3 Sensor

O3 Sensor

Monitor 03 level in your area to stay safe with 03 sensor.

Car Filter

Car Filter

Trap particles before they enter your vehicle, ensuring a safe and healthy ride.

N95 Mask

N95 Mask

Protect yourself from harmful airborne particles by wearing an N95 mask.

Why you should care about Ozone (O3)?

Know More About O3 Sensor
Image of o3

Air Quality FAQs

at Horezu

Frequently Asked Questions About Air Quality

What is the current O3 level in Horezu?

The current real-time O3 level in Horezu is 16 ppb (Good). This was last updated 2025-07-18 08:25:08 PM (Local Time).

When was the best O3 level in Horezu in the last 24 hours?

The best O3 level was 15 ppb (Good) at 11:10 PM, Jul 17, 2025 (Local Time) during the last 24 hours.

When was the worst O3 level in Horezu in the last 24 hours?

The worst O3 level was 18 ppb (Good) at 4:11 AM (Local Time) during the last 24 hours.

What is the current trend of O3 levels in Horezu during last 24 hours?

The O3 levels in Horezu remained stable over the last 24 hours as around 16.08 ppb.

What actions are recommended as per the current O3 level in Horezu?

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