SmogRank / World / North America / Canada / Nova Scotia

Most polluted cities in Nova Scotia, Canada

3 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Kentville at 3.2 µg/m³, #2,779 in the world.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

Quebec: 17 measured citiesNew Brunswick: 5 measured citiesNewfoundland and Labrador: 1 measured cityNova Scotia: 3 measured citiesPrince Edward Island: 1 measured city#3 Sydney: 2.8 µg/m³#1 Kentville: 3.2 µg/m³#2 Port Wallace: 3.2 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Kentville 0% 0.75%0
Every measured city in Nova Scotia, Canada, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Kentville 0%
  2. 1Port Wallace 0%
  3. 3Sydney 0%
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Nova Scotia cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Halifax≈ 5 µg/m³Good
Dartmouth≈ 5 µg/m³Good
Lower Sackville≈ 5 µg/m³Good
Bedford≈ 5 µg/m³Good
New Glasgow≈ 3 µg/m³Good
Glace Bay≈ 7 µg/m³Good

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SmogRank, most polluted cities in Nova Scotia, Canada, PM2.5, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/ca/region/nova-scotia?w=30d.

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.