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Middlesboro Ozone (O₃) Level

Kentucky, United States

Ozone (O₃)

10ppb

Good

Last Updated: 2026-08-03 05:21:02 (Local Time)

Map

Middlesboro

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Middlesboro

The current O₃ level in Middlesboro based on the average air quality level across the city is 10 ppb, making it healthy and safe for everyone.

5.09xBelow

The current O₃ level in Middlesboro is 5.09x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Middlesboro

24 Hours

O₃

Middlesboro

O₃ (ppb)

02-08-2026Time03-08-2026

Time	Middlesboro
5:31am	20
6:01am	27
6:31am	28
7:01am	32
7:31am	28
8:01am	27
8:31am	29
9:01am	30
9:31am	30
10:01am	29
10:31am	30
11:01am	28
11:31am	29
12:01pm	28
12:31pm	32
1:01pm	32
1:31pm	29
2:01pm	28
2:31pm	29
3:01pm	28
3:31pm	28
4:01pm	32
4:31pm	33
5:01pm	34
5:31pm	31
6:01pm	30
6:31pm	29
7:01pm	30
7:31pm	29
8:01pm	25
8:31pm	28
9:01pm	30
9:31pm	28
10:01pm	24
10:31pm	22
11:01pm	18
11:31pm	18
12:01am	16
12:31am	16
1:01am	14
1:31am	13
2:01am	11
2:31am	12
3:01am	11
3:31am	11
4:01am	11
4:31am	10
5:01am	11
5:31am	10

Min. O₃4:31am

Max. O₃5:01pm

Want air quality data?

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.

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

Refineries

Industrial processes emit substances.

Power plants

Emissions from burning fossil fuels.

Paints evaporations

Vocs from paints react with sunlight.

Transportation

Diesel operated vehicles reacts and form ozone.

Short-Term O₃ Exposure Impacts

Chest pain

Discomfort or pain in the chest due to respiratory stress.

Breathing shortness

Difficulty in breathing or feeling of breathlessness.

Respiratory irritation

Inflammation and irritation of the respiratory tract.

Wheezing and coughing

Whistling sound and persistent cough.

Trigger asthma attacks

Aggravation of asthma symptoms.

Why you should care about Ozone (O₃)?

Know More About O₃ Sensor

Air Quality FAQs
at Middlesboro

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Middlesboro?

The current real-time O₃ level in Middlesboro is 10ppb (Good). This was last updated 2026-08-03 05:21:02 (Local Time).

2. When was the best O₃ level in Middlesboro in the last 24 hours?

The best O₃ level was 10 ppb (Good) at 4:31 AM (Local Time) during the last 24 hours.

3. When was the worst O₃ level in Middlesboro in the last 24 hours?

The worst O₃ level was 34 ppb (Good) at 5:01 PM, Aug 2, 2026 (Local Time) during the last 24 hours.

4. What is the current trend of O₃ levels in Middlesboro during last 24 hours?

The O₃ levels in Middlesboro have been fluctuating throughout the last 24 hours. The levels have increased by highest 34 ppb at 5:01 PM, Aug 2, 2026 (Local Time), lowest 10 ppb at 4:31 AM (Local Time).

5. What actions are recommended as per the current O₃ level in Middlesboro?

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