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Defence Colony Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in New Delhi

Last Updated: 21 Oct 2025, 02:28am (Local Time)

location image
Live AQI
543(AQI-US)
Air Quality is
Hazardous
pm10 :  395 µg/m³
PM2.5 :  347 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi hazardous level.webp in Defence Colony
fog

24 °C

Fog
Humidity
Humidity78 %

Wind Speed
Wind Speed4 km/h

UV Index
UV Index0
Last Updated: 21 Oct 2025, 02:28am (Local Time)


Map

Defence Colony

Major Air Pollutants

Defence Colony

AQI Graph

Historical Air Quality Data

Defence Colony

Defence Colony
AQI
.
20-10-2025Time21-10-2025
179
Min.at 4:04 PM on 20th Oct
499
Max.at 12:04 AM on 21st Oct

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Defence Colony, New Delhi, Delhi, India

Year
.
AQI


Annual AQI Trends

2021
201AQI
2022
169AQI
-16%
Fall
2023
161AQI
-5%
Fall
2024
161AQI
0%
No Change
2025
137AQI
-15%
Fall
Overall Annual Percentage (%) change of AQI in (2021 to 2025)
-9%
Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedNovember, 2024286AQI

Least PollutedAugust, 202466AQI

* This data analysis is from year 2021 - 2025

India's Metro Cities

Air Quality Index

Health Advice For People Living In

Defence Colony

9.6Cigarettes per day

Cigarette
Weekly 67.2 Cigarettes
Monthly 288 Cigarettes

Breathing the air in this location is as harmful as smoking 9.6 cigarettes a day.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust


Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Defence Colony

  • asthma due to air pollution in Defence ColonyAsthma
  • heart due to air pollution in Defence ColonyHeart Issues
  • allergy due to air pollution in Defence ColonyAllergies
  • sinus due to air pollution in Defence ColonySinus
  • flu due to air pollution in Defence ColonyCold/Flu
  • copd due to air pollution in Defence ColonyChronic (COPD)
asthma due to air pollution in Defence Colony

High Chances of Asthma

Asthma

Risk of Asthma symptoms is High when AQI is Hazardous (150-301)

Severe symptoms including intense wheezing, severe shortness of breath, significant chest tightness, and persistent coughing that may disrupt daily activities.

Do's :

  • Avoid going outside and keep windows closed to reduce exposure to pollutants.

  • Take prescribed medications as directed by your healthcare provider.

  • Maintain clean indoor air with air purifiers, especially in bedrooms and living areas.

Don'ts :

  • Smoke or expose yourself to secondhand smoke.

  • Engage in physical exertion outdoors.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025

India

Analyze the real-time most air polluted cities in the country.

Defence Colony's AQI Data Analytics Solutions

Air quality data monitoring platforms

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aqi air quality app for Defence Colony
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Empower Your Decisions with Reliable Data

Your area’s real-time data with detailed parameters.

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Personalized health advice as per current AQI.

Personalized health advice as per current AQI.


Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.


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Air Quality FAQs

at Defence Colony

Frequently Asked Questions About Air Quality

What is the current AQI level in Defence Colony?

The current real-time AQI level in Defence Colony is 543 (Hazardous). This was last updated 21 Oct 2025, 02:28am (Local Time).

When was the best AQI level in Defence Colony in the last 24 hours?

The best AQI level was 179 (Unhealthy) at 4:04 PM (Local Time) during the last 24 hours.

When was the worst AQI level in Defence Colony in the last 24 hours?

The worst AQI level was 499 (Hazardous) at 12:04 AM, Oct 21, 2025 (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Defence Colony during last 24 hours?

The AQI levels in Defence Colony have been fluctuating throughout the last 24 hours. The levels have increased by highest 499 at 12:04 AM, Oct 21, 2025 (Local Time), lowest 179 at 4:04 PM (Local Time).

What actions are recommended as per the current AQI level in Defence Colony?

Current AQI levels are warning of emergency conditions. Avoid all outdoor activities, stay indoors with windows and doors closed, use air purifiers, and wear high-quality masks to protect yourself.