In 2022, the pollution of nitrogen dioxide in Singapore reached 128 microgram per cubic meter, an increase from the previous year. Singapore's air quality target by 2020 was to keep the nitrogen dioxide below 200 gram per cubic meter in the 24 hour mean.
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Singapore Department of Statistics. (June 15, 2023). Maximum one hour air pollution level of nitrogen dioxide in Singapore from 2013 to 2022 (in microgram per cubic meter) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 23, 2026, from /statistics/879203/singapore-maximum-one-hour-air-pollution-level-nitrogen-dioxide/
Singapore Department of Statistics. "Maximum one hour air pollution level of nitrogen dioxide in Singapore from 2013 to 2022 (in microgram per cubic meter)." Chart. June 15, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 23, 2026. /statistics/879203/singapore-maximum-one-hour-air-pollution-level-nitrogen-dioxide/
Singapore Department of Statistics. (2023). Maximum one hour air pollution level of nitrogen dioxide in Singapore from 2013 to 2022 (in microgram per cubic meter). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 23, 2026. /statistics/879203/singapore-maximum-one-hour-air-pollution-level-nitrogen-dioxide/
Singapore Department of Statistics. "Maximum One Hour Air Pollution Level of Nitrogen Dioxide in Singapore from 2013 to 2022 (in Microgram per Cubic Meter)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 15 Jun 2023, /statistics/879203/singapore-maximum-one-hour-air-pollution-level-nitrogen-dioxide/
Singapore Department of Statistics, Maximum one hour air pollution level of nitrogen dioxide in Singapore from 2013 to 2022 (in microgram per cubic meter) ÌÇÐÄÆƽâ°æ, /statistics/879203/singapore-maximum-one-hour-air-pollution-level-nitrogen-dioxide/ (last visited July 23, 2026)
Maximum one hour air pollution level of nitrogen dioxide in Singapore from 2013 to 2022 (in microgram per cubic meter) [Graph], Singapore Department of Statistics, June 15, 2023. [Online]. Available: /statistics/879203/singapore-maximum-one-hour-air-pollution-level-nitrogen-dioxide/
