In 2022, the maximum pollution of carbon monoxide in Singapore reached 2.1 microgram per cubic meter. Singapore's air quality target by 2020 was to keep the carbon monoxide level below 30 microgram per cubic meter in the one hour mean.
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Singapore Department of Statistics. (May 12, 2023). Maximum one hour air pollution level of carbon monoxide in Singapore from 2013 to 2022 (in microgram per cubic meter) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 27, 2026, from /statistics/879312/singapore-maximum-one-hour-air-pollution-level-carbon-monoxide/
Singapore Department of Statistics. "Maximum one hour air pollution level of carbon monoxide in Singapore from 2013 to 2022 (in microgram per cubic meter)." Chart. May 12, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 27, 2026. /statistics/879312/singapore-maximum-one-hour-air-pollution-level-carbon-monoxide/
Singapore Department of Statistics. (2023). Maximum one hour air pollution level of carbon monoxide in Singapore from 2013 to 2022 (in microgram per cubic meter). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 27, 2026. /statistics/879312/singapore-maximum-one-hour-air-pollution-level-carbon-monoxide/
Singapore Department of Statistics. "Maximum One Hour Air Pollution Level of Carbon Monoxide in Singapore from 2013 to 2022 (in Microgram per Cubic Meter)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 12 May 2023, /statistics/879312/singapore-maximum-one-hour-air-pollution-level-carbon-monoxide/
Singapore Department of Statistics, Maximum one hour air pollution level of carbon monoxide in Singapore from 2013 to 2022 (in microgram per cubic meter) ÌÇÐÄÆƽâ°æ, /statistics/879312/singapore-maximum-one-hour-air-pollution-level-carbon-monoxide/ (last visited July 27, 2026)
Maximum one hour air pollution level of carbon monoxide in Singapore from 2013 to 2022 (in microgram per cubic meter) [Graph], Singapore Department of Statistics, May 12, 2023. [Online]. Available: /statistics/879312/singapore-maximum-one-hour-air-pollution-level-carbon-monoxide/
