What is the Current O3 Level?
West Bengal
The current O3 level based on average air quality data in West Bengal is 9 ppb, making it healthy and safe for everyone.
The current O3 level in West Bengal is 5.66x Below the recommended WHO guideline of 50.96 ppb.
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AQI Graph
Historical Air Quality Data
West Bengal
Download 2024 Annual Data
World Air Quality Report
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.Health Advice Based on Current O3 Level In
West Bengal
Air PurifierTurn Off
Car FilterAdvisable
N95 MaskAdvisable
Stay IndoorAdvisable
As per the current O3, turn off the air purifier.
Recommendations by 
O3 Monitor
Check real-time O3 levels to ensure you're breathing clean air.
O3 Sensor
Monitor 03 level in your area to stay safe with 03 sensor.
Car Filter
Trap particles before they enter your vehicle, ensuring a safe and healthy ride.
N95 Mask
Protect yourself from harmful airborne particles by wearing an N95 mask.
Why you should care about Ozone (O3)?
Air Quality FAQs
at West Bengal
Frequently Asked Questions About Air Quality
What is the current O3 level in West Bengal?
The current real-time O3 level in West Bengal is 9 ppb (Good). This was last updated 9 minutes ago (Local Time).
When was the best O3 level in West Bengal in the last 24 hours?
The best O3 level was 8 ppb (Good) at 6:10 AM (Local Time) during the last 24 hours.
When was the worst O3 level in West Bengal in the last 24 hours?
The worst O3 level was 12 ppb (Good) at 5:10 PM, May 28, 2025 (Local Time) during the last 24 hours.
What is the current trend of O3 levels in West Bengal during last 24 hours?
The O3 levels in West Bengal remained stable over the last 24 hours as around 9.64 ppb.
What actions are recommended as per the current O3 level in West Bengal?
The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.