Cities with the lowest PM2.5 levels
Cities ranked by the lowest available annual PM2.5 observation from the same selected metric family.
Halifax, Canada is first in the current Air Quality Pm25 Annual Ug M3 ranking at 1.9 ug/m3.
- Accepted items
- 30
- Scope
- multi-country cities
- Last checked
- 2026-07-15
Source-backed answers
Rows keep the original source wording, units and date context. They are reference data, not legal, tax or immigration advice.
How to read this report
Select one metric (air_quality_pm25_annual_ug_m3), keep only numeric A/B rows with direct source URLs, sort ascending, and retain the original geographic fallback label.
- A ranking is only comparable within the selected metric and unit.
- Regional or other fallback grains remain labelled and are not presented as city measurements.
Sources
Official ECCC/NAPS 2024 annual daily-mean station observations, reproducibly aggregated as an arithmetic mean for eligible stations within 25 km of the target city coordinate. This is a derived place proxy, not an asserted municipal monitor aggregate.Environment and Climate Change Canada (ECCC), National Air Pollution Surveillance (NAPS) Program · Checked 2026-07-15official validated air-quality station bulk; no exact target station-period input foundEuropean Environment Agency · Checked 2026-07-15Official SMHI 2023 national model values are derived from exact-kommun receptor/grid features.SMHI · Checked 2026-07-15Official SMHI 2023 national model values are derived from exact-kommun receptor/grid features.SMHI · Checked 2026-07-15Official SMHI 2023 national model values are derived from exact-kommun receptor/grid features.SMHI · Checked 2026-07-15
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