What is Air Quality Index (AQI)?

The air quality in any city is determined by the Air Quality Index (AQI). This indicator is developed by government agencies. To assess a city's AQI, various pollutants are considered. During the evaluation, the concentration of these pollutants in the air is measured. The AQI levels help inform people about whether air pollution is increasing or decreasing. Additionally, it is explained how air pollution can be harmful to people's health and in what ways. When the AQI rises, people are advised to take precautions, such as wearing masks outdoors and using air purifiers indoors.

Most Polluted City/States in India

Updated: September 13, 2024

Rank	City, States	AQI
1	Sri Ganganagar, Rajasthan	160
2	Durgapur, West Bengal	152
3	Asansol, West Bengal	139
4	Kunjemura, Chhattisgarh	134
5	Pali, Rajasthan	129
6	Jalore, Rajasthan	122
7	Hajipur, Bihar	122
8	Chittorgarh, Rajasthan	121
9	Jaisalmer, Rajasthan	119
10	Jalna, Maharashtra	119

Source : Centre Pollution Board

Agartala	Agra	Ahmedabad	Ahmednagar
Aizawl	Ajmer	Akola	Alwar
Amaravati	Ambala	Amravati	Amritsar
Anantapur	Angul	Ankleshwar	Araria
Ariyalur	Arrah	Asansol	Aurangabad
Aurangabad	Baddi	Badlapur	Bagalkot
Baghpat	Bahadurgarh	Balasore	Ballabgarh
Banswara	Baran	Barbil	Bareilly
Baripada	Barmer	Barrackpore	Bathinda
Begusarai	Belapur	Belgaum	Bengaluru
Bettiah	Bhagalpur	Bharatpur	Bhilai
Bhilwara	Bhiwadi	Bhiwandi	Bhiwani
Bhopal	Bhubaneswar	Bidar	Bihar Sharif
Bikaner	Bilaspur	Bileipada	Boisar
Brajrajnagar	Bulandshahr	Bundi	Buxar
Byasanagar	Byrnihat	Chamarajanagar	Chandigarh
Chandrapur	Charkhi Dadri	Chengalpattu	Chennai
Chhal	Chhapra	Chikkaballapur	Chikkamagaluru
Chittoor	Chittorgarh	Churu	Coimbatore
Cuddalore	Cuttack	Damoh	Dausa
Davanagere	Dehradun	Delhi	Dewas
Dhanbad	Dharuhera	Dharwad	Dholpur
Dhule	Dindigul	Dungarpur	Durgapur
Eloor	Faridabad	Fatehabad	Firozabad
Gadag	Gandhinagar	Gangtok	Gaya
Ghaziabad	Gorakhpur	Greater Noida	Gummidipoondi
Gurugram	Guwahati	Gwalior	Hajipur
Haldia	Hanumangarh	Hapur	Hassan
Haveri	Hisar	Howrah	Hubballi
Hyderabad	Imphal	Indore	Jabalpur
Jaipur	Jaisalmer	Jalandhar	Jalgaon
Jalna	Jalore	Jhalawar	Jhansi
Jhunjhunu	Jind	Jodhpur	Jorapokhar
Kadapa	Kaithal	Kalaburagi	Kalyan
Kanchipuram	Kannur	Kanpur	Karauli
Karnal	Karwar	Kashipur	Katihar
Katni	Keonjhar	Khanna	Khurja
Kishanganj	Kohima	Kolar	Kolhapur
Kolkata	Kollam	Koppal	Korba
Kota	Kunjemura	Kurukshetra	Latur
Lucknow	Ludhiana	Madikeri	Mahad
Maihar	Malegaon	Mandi Gobindgarh	Mandideep
Mandikhera	Manesar	Mangalore	Manguraha
Meerut	Milupara	Mira-bhayandar	Moradabad
Motihari	Mumbai	Munger	Muzaffarnagar
Muzaffarpur	Mysuru	Nagaon	Nagaur
Nagpur	Naharlagun	Nalbari	Nanded
Nandesari	Narnaul	Nashik	Navi Mumbai
Nayagarh	Noida	Ooty	Pali
Palkalaiperur	Palwal	Panchkula	Panipat
Parbhani	Pathardih	Patiala	Patna
Pimpri-chinchwad	Pithampur	Pratapgarh	Prayagraj
Puducherry	Pune	Purnia	Raichur
Raipur	Rairangpur	Rajamahendravaram	Rajgir
Rajsamand	Ramanagara	Ramanathapuram	Ratlam
Rishikesh	Rohtak	Rourkela	Rupnagar
Sagar	Saharsa	Salem	Samastipur
Sangli	Sasaram	Satna	Sawai Madhopur
Shillong	Shivamogga	Sikar	Silchar
Siliguri	Singrauli	Sirohi	Sirsa
Sivasagar	Siwan	Solapur	Sonipat
Sri Ganganagar	Suakati	Surat	Talcher
Tensa	Thane	Thiruvananthapuram	Thoothukudi
Thrissur	Tiruchirappalli	Tirunelveli	Tirupati
Tirupur	Tonk	Tumakuru	Tumidih
Udaipur	Udupi	Ujjain	Ulhasnagar
Vapi	Varanasi	Vatva	Vellore
Vijayapura	Vijayawada	Virar	Virudhunagar
Visakhapatnam	Vrindavan	Yadgir	Yamuna Nagar

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Frequently Asked Questions

What is a good AQI level?

A good AQI level is between 0 and 50, indicating air quality that poses little or no risk to health.

What is the safe range of AQI?

The safe range of AQI is from 0 to 100, covering the categories of "Good" (0-50) and "Moderate" (51-100).

What are the criteria for AQI?

AQI criteria include measuring the concentration of pollutants like PM2.5, PM10, ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide, and ammonia over a specified averaging period.

What are the 8 parameters of AQI?

The 8 parameters of AQI are: Particulate Matter (PM10), Particulate Matter (PM2.5), Ozone (O3), Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2), Carbon Monoxide (CO), Ammonia (NH3), and Lead (Pb).

How is AQI calculated?

AQI is calculated using pollutant concentration data, which is converted into an AQI value for each pollutant through specific formulae. The highest value among these is reported as the overall AQI for the location.