4PLANET IMPACT / ISSUE
Air pollution
Exposure to particulate matter and harmful gases damages human health and is closely connected to energy, transport, industry and combustion.
Why it matters
Air-pollution risk depends on pollutant, concentration, duration and population exposure; a general pollution signal is not an individual health diagnosis.
What the sources establish
WHO's global air-quality guidelines provide health-based guideline levels for major air pollutants including PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide.
Source: https://www.who.int/publications/i/item/9789240034228
Published action
No project on this issue has passed the IMPACT publication gate yet. That is not evidence that no work exists.
Known and not established
- Do not turn ambient pollution data into individual medical advice or exposure claims without appropriate evidence.
- This issue record is source-grounded context, not proof that any particular project, action or intervention is effective.
Sources
Truth boundary. Listing does not imply 4PLANET partnership or endorsement. Source-reported figures are not independently verified by 4PLANET. Delivery, outcome and verification remain separate states.
Approaches associated with this problem
No independently reviewed solution comparison is published for this problem.
Published by 4PLANET · Source-aware public record · How records are reviewed