Chandigarh's Pollution Problem: A Comprehensive Overview

how many pollution in chandigarh

Chandigarh, the capital of the Indian states of Haryana and Punjab, has been battling air pollution, with air quality deteriorating to hazardous levels. In 2024, the city's air quality index (AQI) reached 'very poor' levels, surpassing Delhi's pollution, with particulate matter (PM 2.5) as the primary pollutant. While Chandigarh has taken steps to monitor and improve air quality, it is essential to explore the sources of pollution, the impact on public health, and the effectiveness of mitigation strategies to address this pressing issue.

Characteristics Values
Overall Air Quality Index 103
PM2.5 (fine particulate matter) AQI 103
PM10 (respirable particulate matter) AQI 53
NO2 (nitrogen dioxide) AQI 7
SO2 (sulfur dioxide) AQI 2
O3 (ozone) AQI 35
CO (carbon monoxide) AQI 2
Current Real-time AQI Level 94 (Moderate)
Best AQI Level in the Last 24 Hours 76 (Moderate) at 3:09 PM, Jun 5, 2025
Worst AQI Level in the Last 24 Hours 118 (Poor) at 11:09 PM, Jun 5, 2025

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Air Quality Index (AQI)

The Air Quality Index (AQI) is a measurement of the air quality in a given location, taking into account several pollutants. The AQI provides information about the levels of air pollution and any potential health effects on people in the area. The AQI is calculated using standards and guidelines developed by the Environmental Protection Agency (EPA) and the World Health Organization (WHO), as well as other scientific studies.

In the case of Chandigarh, India, the AQI levels have been described as fluctuating and moderate as of June 6, 2025. The AQI level at that time was 94, which is an improvement from the previous day's high of 118 (considered "poor") at 11:09 PM, June 5, 2025. The lowest AQI level in the past 24 hours was 76, recorded at 3:09 PM on the same day.

While the current AQI levels in Chandigarh are acceptable for most individuals, sensitive groups may experience minor to moderate symptoms with long-term exposure. It is recommended that these sensitive groups reduce the time spent outside if they experience symptoms such as difficulty breathing or throat irritation.

To monitor the air quality in Chandigarh, various solutions are available, such as the Pocket monitor, which provides instant air quality insights, and the Sector-25, Chandigarh Air Quality Widget, which can be installed on Windows desktops. Additionally, Prana Air offers pollution monitoring and fresh air solutions for various indoor spaces, including residential, commercial, retail, and healthcare facilities.

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Particulate Matter (PM 2.5)

Chandigarh, located in northwest India, is the capital of the states of Haryana and Punjab. The city's air quality has been described as "unhealthy for sensitive groups", with a focus on the high levels of fine particulate matter, or PM2.5.

PM2.5 refers to particulate matter that has a diameter of less than 2.5 micrometres, which is about 3% of the diameter of human hair. These particles are so small that they can be inhaled and cause serious health problems. They are a mixture of solid particles and liquid droplets, and can include dust, dirt, soot, and smoke. Sources of these particles include vehicle emissions, construction activities, road re-suspension, and dust from open waste burning.

The National Ambient Monitoring Program (NAMP), operated by the Central Pollution Control Board (CPCB), has reported data on PM2.5 in Chandigarh. Satellite data derived surface PM2.5 concentrations are useful for evaluating annual trends in pollution levels, but they are not a replacement for on-ground monitoring. The data is estimated using satellite feeds and global chemical transport models. The Air Quality Index (AQI) in Chandigarh has been reported as high as 118, which is considered "poor", and the PM2.5 concentration was 32 µg/m³.

The health risks associated with exposure to PM2.5 are significant. Breathing air with high levels of PM2.5 is comparable to smoking cigarettes, and can lead to respiratory and cardiovascular issues, including asthma and an increased risk of heart disease. It is recommended that individuals limit outdoor activities when PM2.5 levels are high, and use air purifiers to improve indoor air quality.

Overall, the high levels of PM2.5 in Chandigarh are a cause for concern, and efforts should be made to reduce emissions and improve air quality in the region. Individuals can play a role by being aware of the AQI and taking appropriate actions, such as wearing masks and limiting time spent outdoors when pollution levels are high.

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Stubble burning

In November 2013, skies over northwestern India, including Chandigarh, were filled with smoke as farmers burned leftover crop residue. The smoke was heavy enough to ground a handful of flights. This smoke contains numerous substances that are harmful to human health, including carbon monoxide, nitrogen oxides, and particulate matter. Stubble burning also generates a thick haze that poses a significant health risk to individuals of all ages.

In 2024, Punjab, the state surrounding Chandigarh, recorded 238 stubble burning cases in a single day, bringing the total to 7,864 for the season. This practice has severe consequences for the environment and human health. It kills beneficial microflora and fauna in the soil, reduces organic matter, and destroys the carbon-nitrogen equilibrium. The emissions from stubble burning have been linked to various health disorders, including lung cancer, respiratory infections, and worsened conditions for people with Chronic Obstructive Pulmonary Disorder.

To reduce the pollution caused by stubble burning, several solutions have been proposed. These include mitigating crop farming, diversifying agriculture, adopting the paddy straw farming technique, and creating biomass pellets. Additionally, spraying an enzyme that decomposes stubble into fertiliser can improve soil health, prevent air pollution, and reduce carbon dioxide emissions. Empowering and educating farmers about the harmful consequences of stubble burning is also crucial for reducing pollution levels.

While stubble burning is illegal in India, enforcement remains weak, and authorities are working to proactively implement this ban and research alternative methods.

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Wildfire smoke

Chandigarh, a city that serves as the capital of two states, Punjab and Haryana, has been facing increasing pollution levels. The city was declared smoke-free in 2007, but in recent years, it has become the second most polluted city in India. The main sources of pollution in Chandigarh include road transport, construction projects, stubble burning in nearby states, and three-wheelers. The city has over 12.5 lakh vehicles on the road, contributing 40% of the city's pollution. There is also a growing number of construction projects, generating over 1,500 tonnes of waste daily. Additionally, stubble burning in states like Punjab and Haryana has resulted in a rise in PM 2.5 levels, further worsening the air quality in Chandigarh. To address these issues, the Chandigarh Pollution Control Committee (CPCC) has appealed to the city's residents for innovative and practical solutions to curb the different types of pollution, including air, water, soil, and noise pollution.

In Chandigarh, the impact of wildfire smoke on air pollution has been evident. Real-time air quality indices have shown that the city's overall air quality often falls within the "unhealthy" range, with fine particulate matter (PM2.5) levels of 103 and respirable particulate matter (PM10) levels of 53. These high levels of particulate matter can have harmful effects on respiratory health, contributing to the rise in respiratory illnesses observed in Chandigarh.

To mitigate the effects of wildfire smoke and improve air quality in Chandigarh, several measures have been proposed. These include enhancing the quality and quantity of bus services, reducing the time gaps between bus timings, and encouraging the use of CNG-powered vehicles instead of petrol or diesel ones. Additionally, implementing congestion charges for vehicles entering crowded areas and providing incentives for citizens who actively maintain the cleanliness of the city are also suggested strategies. By reducing vehicle emissions and encouraging the use of public transportation, these measures aim to decrease the overall pollution levels in Chandigarh and minimise the impact of wildfire smoke on the city's air quality.

Furthermore, addressing stubble burning in nearby states is crucial for reducing wildfire smoke and its impact on Chandigarh's air quality. Alternative methods for crop residue management, such as encouraging the use of happy seeders, which cost only Rs 1,000 per acre, can help reduce the amount of stubble burning and its associated air pollution. By working together with neighbouring states and implementing effective policies, Chandigarh can take proactive steps towards reducing the impact of wildfire smoke and improving the respiratory health of its citizens.

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Air quality stations

The air quality in Chandigarh, India, is monitored by several stations that provide real-time data on various pollutants. These stations are located in different sectors across the city, including Sector 22 and Sector 25. The data from these stations is accessible to the public through websites and mobile applications, allowing residents to stay informed about the air quality in their respective areas.

One such station is located in Sector 22, Chandigarh. On Friday, June 6th, 2025, at 5 pm, the overall air quality index in this sector was recorded at 137, which is considered unhealthy for sensitive groups. The fine particulate matter (PM2.5) AQI was 137, while the respirable particulate matter (PM10) AQI was 53. The nitrogen dioxide (NO2) AQI was 5, the sulfur dioxide (SO2) AQI was 6, the ozone (O3) AQI was 92, and the carbon monoxide (CO) AQI was 6.

Another air quality monitoring station is located in Sector 25, Chandigarh. On Saturday, April 5th, 2025, at 8:58 pm, the overall air quality index was recorded at 103. The PM2.5 AQI was 103, PM10 AQI was 53, NO2 AQI was 7, SO2 AQI was 2, O3 AQI was 35, and the CO AQI was 2. The data from this station is also available through a Windows Desktop widget that can be downloaded and installed.

In addition to these stations, there are other air quality monitoring stations in Chandigarh that contribute to the real-time air pollution map. These stations include Sector-53 and HIMUDA Complex Phase-1, Baddi, which had AQI readings of 116 and 112, respectively, indicating high levels of air pollution in those areas.

The Central Pollution Control Board (CPCB) also plays a crucial role in monitoring air quality in Chandigarh and across India. They execute the National Air Quality Monitoring Programme (NAMP), which consists of a network of 966 operating stations in 419 cities/towns across 28 states and 7 Union Territories as of November 2024. The NAMP provides valuable data on ambient air quality, and the CPCB coordinates with various agencies to ensure uniformity and consistency in the air quality information.

Frequently asked questions

As of June 6, 2025, the air quality in Chandigarh is moderate, with an Air Quality Index (AQI) level of 94.

The worst AQI level was 118 (poor) at 11:09 PM on June 5, 2025.

The major pollutants in Chandigarh include particulate matter (PM 2.5 and PM 10), sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), and ozone (O3).

Chandigarh has been ranked as having the second-worst air quality in India, only after Hajipur, Bihar. Its AQI levels have even surpassed those of Delhi, which is known for its high pollution levels.

The current AQI levels in Chandigarh are acceptable for most individuals. However, certain pollutants may affect sensitive individuals, and those with respiratory conditions may experience symptoms such as wheezing, shortness of breath, chest tightness, and persistent cough.

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