Challenges in IAQ for Indoor Spaces: A Comparison of the Reference Guideline Values of Indoor Air Pollutants from the Governments and International Institutions

Since people spend most of their time inside buildings, indoor air quality (IAQ) remains a highlighted topic to ensure in the built environment improve public health, especially for vulnerable users. To achieve better (IEQ), some countries’ governments or regional institutions have developed and published reference guideline values various pollutants prevent IAQ from becoming adverse occupants. Beyond guidelines by World Health Organization (WHO), countries, there are specific institutional requirements on IAQ, others integrated it into building regulation environment. This paper is based literature research, summarized previously conducted works authors, chemical IAQ-related regulations several Governments related regions around World. Despite these efforts at standardization legislation, many monitoring activities countries still fall short main indications produced. By comparing 35 pollutants, both physical ones, which proposed documents 23 included so far, research prevention actions progress different should be plans with guidelines/reference current state. The outcome define trends suggest perspectives field interest improving generic spaces an international level. It becomes evident that, global level, represents complex political, social, health challenge, suffers absence systematic harmonized approach. not new situation; issue was raised more than 40 years ago, despite pandemic, situation has changed.