Nitrogen dioxide (NO₂) concentration in the northeastern city of Kolkata averaged 34 micrograms per cubic meter of air (μg/m³) in 2022. Average NO₂ concentrations in Kolkata have fallen considerably since the early 2000s. Although the NO₂ concentration in Ahmedabad was lower than in other Indian cities in 2022, the sulfur dioxide concentration there was considerably higher.
Nitrogen dioxide (NO₂) concentration in ambient air in selected cities in India from 2001 to 2022
(in micrograms per cubic meter)
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MOSPI. (June 5, 2024). Nitrogen dioxide (NO₂) concentration in ambient air in selected cities in India from 2001 to 2022 (in micrograms per cubic meter) [Graph]. In Statista. Retrieved February 16, 2025, from https://www.statista.com/statistics/1284361/india-concentration-of-nitrogen-dioxide-by-city/?__sso_cookie_checker=failed
MOSPI. "Nitrogen dioxide (NO₂) concentration in ambient air in selected cities in India from 2001 to 2022 (in micrograms per cubic meter)." Chart. June 5, 2024. Statista. Accessed February 16, 2025. https://www.statista.com/statistics/1284361/india-concentration-of-nitrogen-dioxide-by-city/?__sso_cookie_checker=failed
MOSPI. (2024). Nitrogen dioxide (NO₂) concentration in ambient air in selected cities in India from 2001 to 2022 (in micrograms per cubic meter). Statista. Statista Inc.. Accessed: February 16, 2025. https://www.statista.com/statistics/1284361/india-concentration-of-nitrogen-dioxide-by-city/?__sso_cookie_checker=failed
MOSPI. "Nitrogen Dioxide (No₂) Concentration in Ambient Air in Selected Cities in India from 2001 to 2022 (in Micrograms per Cubic Meter)." Statista, Statista Inc., 5 Jun 2024, https://www.statista.com/statistics/1284361/india-concentration-of-nitrogen-dioxide-by-city/?__sso_cookie_checker=failed
MOSPI, Nitrogen dioxide (NO₂) concentration in ambient air in selected cities in India from 2001 to 2022 (in micrograms per cubic meter) Statista, https://www.statista.com/statistics/1284361/india-concentration-of-nitrogen-dioxide-by-city/?__sso_cookie_checker=failed (last visited February 16, 2025)
Nitrogen dioxide (NO₂) concentration in ambient air in selected cities in India from 2001 to 2022 (in micrograms per cubic meter) [Graph], MOSPI, June 5, 2024. [Online]. Available: https://www.statista.com/statistics/1284361/india-concentration-of-nitrogen-dioxide-by-city/?__sso_cookie_checker=failed