NZ’s Air Quality Shows Improvement, But Further Efforts Needed, Report Finds

The report, part of a three-year review, is supported by updated Stats NZ indicator data, combined with insights from environmental research.

The Our Air 2024 report, jointly released by the Ministry for the Environment (MfE) and Stats NZ, shows that air quality in New Zealand is improving, but continued efforts are required to meet national and international air quality targets, Environment Minister Penny Simmonds and Statistics Minister Andrew Bayly announced.

“Air pollution levels have decreased in many parts of the country. New Zealand is making measurable progress towards achieving the Government’s air quality targets,” Minister Simmonds said, emphasizing the positive trend. “While there is still work to be done, the overall direction is encouraging, and we remain committed to improving air quality to enhance community wellbeing.”

Three-Yearly Review Provides Insight

The report, part of a three-year review, is supported by updated Stats NZ indicator data, combined with insights from environmental research. Six key air quality indicators, refreshed in September, revealed that pollutant concentrations—particularly fine particulate matter (PM2.5) and nitrogen dioxide (NO2)—decreased across most monitoring sites between 2016 and 2023. However, in some regions, levels still exceed World Health Organization (WHO) guidelines, underscoring the need for ongoing monitoring and action.

“Human activities such as burning wood for home heating and vehicle emissions remain key contributors to air pollution,” Minister Simmonds noted. “Environmental factors like temperature and wind can also impact air quality in specific areas at certain times.”

Health Risks from Key Pollutants

PM2.5 and NO2 are two of the primary pollutants of concern. Fine particulate matter, often produced by burning wood for heating, can penetrate deeply into the lungs, leading to serious health issues such as respiratory and cardiovascular diseases. Nitrogen dioxide, mainly emitted by motor vehicles, also poses significant risks to respiratory health. The report underscores the importance of managing these pollutants to reduce their impact on public health.

“We are committed to continuing efforts to reduce emissions and improve air quality nationwide,” Simmonds said. “These findings are essential for shaping future policies that ensure cleaner air for all New Zealanders.”

Robust Data for Informed Policy

Statistics Minister Andrew Bayly highlighted the importance of high-quality data in informing environmental policy. “Our Air 2024 is built on a foundation of robust data-gathering processes and independent expert analysis. This report ensures we have the best available information to make informed decisions and meet our environmental targets,” Bayly said.

He also emphasized the value of the report in expanding the country’s environmental data reporting system. By offering in-depth insights into the relationship between human activities, environmental pressures, and air quality, the report will help guide future policies aimed at reducing harmful emissions and protecting public health.

Public Engagement and Awareness

The Our Air 2024 report encourages New Zealanders to actively engage with the findings. By understanding the links between human activities, air quality, and health, individuals and communities can become more informed about how their actions affect the environment.

The report further highlights the importance of collaboration across sectors to address the complex issue of air pollution, with an emphasis on policies that will support the ongoing transition to cleaner, more sustainable energy sources.

Looking Forward

While New Zealand has made measurable progress toward its air quality goals, the report signals that additional measures will be required to fully meet both national targets and WHO guidelines. Continued collaboration between the government, businesses, and communities will be critical in maintaining the momentum toward cleaner air, healthier environments, and better public health outcomes.

As New Zealand moves forward in addressing air quality challenges, the data presented in Our Air 2024 will play a pivotal role in shaping policies that balance economic, environmental, and public health priorities.