Live

Rokycany Ozone (O₃) Level

Plzensky Kraj, Czechia

Ozone (O₃)

18ppb

Good

Last Updated: 2026-08-08 18:41:01 (Local Time)

Map

Rokycany

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Rokycany

The current O₃ level in Rokycany based on the average air quality level across the city is 18 ppb, making it healthy and safe for everyone.

2.8xBelow

The current O₃ level in Rokycany is 2.8x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Rokycany

24 Hours

O₃

Rokycany

O₃ (ppb)

07-08-2026Time08-08-2026

Time	Rokycany
7:01pm	19
7:31pm	18
8:01pm	17
8:31pm	17
9:01pm	17
9:31pm	19
10:01pm	17
10:31pm	17
11:01pm	17
11:31pm	14
12:01am	15
12:31am	15
1:01am	16
1:31am	14
2:01am	16
2:31am	16
3:01am	16
3:31am	15
4:01am	17
4:31am	18
5:01am	15
5:31am	16
6:01am	15
6:31am	17
7:01am	17
7:31am	15
8:01am	15
8:31am	15
9:01am	15
9:31am	15
10:01am	15
10:31am	15
11:01am	15
11:31am	14
12:01pm	15
12:31pm	16
1:01pm	16
1:31pm	15
2:01pm	16
2:31pm	18
3:01pm	16
3:31pm	17
4:01pm	17
4:31pm	16
5:01pm	17
5:31pm	19
6:01pm	18
6:31pm	18

Min. O₃11:31pm

Max. O₃7:01pm

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 Rokycany

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Rokycany?

The current real-time O₃ level in Rokycany is 18ppb (Good). This was last updated 2026-08-08 18:41:01 (Local Time).

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

The best O₃ level was 14 ppb (Good) at 11:31 PM, Aug 7, 2026 (Local Time) during the last 24 hours.

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

The worst O₃ level was 19 ppb (Good) at 7:01 PM, Aug 7, 2026 (Local Time) during the last 24 hours.

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

The O₃ levels in Rokycany have been fluctuating throughout the last 24 hours. The levels have increased by highest 19 ppb at 7:01 PM, Aug 7, 2026 (Local Time), lowest 14 ppb at 11:31 PM, Aug 7, 2026 (Local Time).

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

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