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Cities with the lowest annual PM2.5

Published annual PM2.5 observations ranked from lowest to highest without mixing current readings and annual values.

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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

Compare each answer with its unit and checked date; the complete source ledger is below.

Question or countryVerified answerChecked
Halifax, Canada1.9 ug/m32026-07-15
Corner Brook, Canada1.95 ug/m32026-07-15
Charlottetown, Canada2.08 ug/m32026-07-15
Stratford, Canada2.08 ug/m32026-07-15
Moncton, Canada2.21 ug/m32026-07-15
Saint John, Canada2.3275 ug/m32026-07-15
Richmond, Canada2.447 ug/m32026-07-15
Fredericton, Canada2.48 ug/m32026-07-15
North Vancouver, Canada2.4922 ug/m32026-07-15
Vancouver, Canada2.4922 ug/m32026-07-15
Delta, Canada2.5029 ug/m32026-07-15
Chilliwack, Canada2.52 ug/m32026-07-15
Burnaby, Canada2.561 ug/m32026-07-15
Port Moody, Canada2.561 ug/m32026-07-15
Coquitlam, Canada2.5625 ug/m32026-07-15
Surrey, Canada2.5782 ug/m32026-07-15
Port Coquitlam, Canada2.5833 ug/m32026-07-15
Maple Ridge, Canada2.6883 ug/m32026-07-15
Alcoutim, Portugal2.7697 ug/m32026-07-15
Nanaimo, Canada2.775 ug/m32026-07-15
Abbotsford, Canada2.795 ug/m32026-07-15
North Bay, Canada2.83 ug/m32026-07-15
Santana, Portugal2.8443 ug/m32026-07-15
Gällivare, Sweden2.8452 ug/m32026-07-15
Angra do Heroísmo, Portugal2.892 ug/m32026-07-15
Faro, Portugal2.9058 ug/m32026-07-15
Krokom, Sweden2.9067 ug/m32026-07-15
Åre, Sweden2.9086 ug/m32026-07-15
Belleville, Canada2.91 ug/m32026-07-15
Quinte West, Canada2.91 ug/m32026-07-15

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

Before you use this report

This ranking is a source-backed reference. Read the source, geographic grain and observation date before comparing rows.

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