What does the current AQI of 71 mean?

The AQI at Bombay Castel, Ooty - TNPCB is 71, classified as 'Satisfactory'. Generally acceptable, but sensitive groups should monitor exposure.

Is PM2.5 of 52.0 harmful?

PM2.5 level is 52.0 µg/m³, considered 'Satisfactory'. Fine particulate matter can penetrate deep into lungs and cause respiratory issues. People with asthma or heart disease should take precautions.

What does PM10 level of 71.0 mean?

PM10 is 71.0 µg/m³ at Bombay Castel, Ooty - TNPCB, marked as 'Satisfactory'. It indicates larger dust or pollen particles which may cause throat irritation or allergies.

Should I worry about NO₂ being 4.0 µg/m³?

NO₂ level is 4.0 µg/m³. Higher levels often come from vehicle emissions and may aggravate lung diseases. Consider reducing time near heavy traffic if you're sensitive.

What are the risks of CO at 28.0 mg/m³?

Carbon Monoxide is at 28.0 mg/m³. CO can reduce oxygen delivery in the body. High values are dangerous indoors and for people with cardiovascular conditions.

Why is ozone (O₃) important in air quality?

Ground-level ozone is 5.0 µg/m³. Though protective high up, it can cause respiratory problems when present in lower atmosphere, especially in sunlight-heavy hours.

When was this data last updated?

This AQI data was last updated on April 16, 2026, 2 a.m.. Check the timestamp to ensure you're viewing the most recent air quality levels.

● Live

AQI Near Udhagamandalam, Ooty

Serving Udhagamandalam, Nilgiris (643001) · Live AQI

Last updated: April 16, 2026, 2 a.m.

Current AQI is 71 (Satisfactory).

Last 24 hours: low 3 · high 72

This station covers AQI for Udhagamandalam (643001) in Ooty.

AQI Index

Satisfactory

24h low

24h high

30-day avg

56.2

Good Satisfactory Moderate Poor Very Poor Severe

Check AQI at your current location
Uses device GPS · No data stored

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Areas Covered Near This Station

Air quality readings here represent nearby areas around Udhagamandalam in Ooty.

Nearby locality: Udhagamandalam · District: Nilgiris · Pincode: 643001

Milk Dairy, Ooty-Coonoor-Mettupalayam- Road, Udhagamandalam, Nilgiris, Tamil Nadu, 643001, India

Pollutant Breakdown

PM2.5

52.0

Satisfactory

PM10

71.0

Satisfactory

NO₂

4.0

Good

28.0

Severe

O₃

5.0

Good

SO₂

2.0

Good

AQI Trends (Last 30 Days)

Based on station history. Latest history update: 16 Apr 2026, 2 AM.

30-day avg

56.2

Top Polluted Cities (Latest)

FAQs About Bombay Castel, Ooty - TNPCB Air Quality

The AQI at Bombay Castel, Ooty - TNPCB is 71, classified as Satisfactory. Acceptable, but people with respiratory conditions should still be cautious.

PM2.5 at this station is 52.0, classified as Satisfactory. Fine particles like these can enter your lungs and bloodstream, especially dangerous for people with asthma or heart issues. Avoid outdoor exercise if levels exceed 60 µg/m³.

PM10 is currently 71.0 at Bombay Castel, Ooty - TNPCB, labeled Satisfactory. This indicates presence of coarse dust and pollen. If you're sensitive to dust or allergens, consider wearing a mask or avoiding dusty areas.

Carbon Monoxide is measured at 28.0 mg/m³ here. While safe under 1 mg/m³, higher levels can reduce oxygen delivery to organs. Vulnerable groups should avoid enclosed, polluted spaces.

O₃ level is 5.0. While ozone protects us high in the atmosphere, ground-level ozone is harmful, especially during hot afternoons. It can trigger coughing and lung discomfort.

Nitrogen Dioxide is 4.0 µg/m³ – a marker of traffic pollution. If you're in a high-traffic area or sensitive to respiratory irritants, it's wise to avoid peak rush hours outdoors.

Data was last refreshed at April 16, 2026, 2 a.m.. Some stations update hourly; others may lag. Always check timestamp before taking action.

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📊 Data Source Attribution

Air quality data provided by the World Air Quality Index (WAQI) project and the Central Pollution Control Board (CPCB), sourced via data.gov.in.