Air Quality Lab — St. John's, Canada
Air Quality Profile·
St. John's reports an annual PM2.5 of 5.1 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
St. John's
Canada
CanadaAnnual Average
GoodWHO annual classification
5.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
5.75.7 µg/m³ — Good
5.25.2 µg/m³ — Good
5.75.7 µg/m³ — Good
6.46.4 µg/m³ — Good
4.14.1 µg/m³ — Excellent
5.15.1 µg/m³ — Good
5.25.2 µg/m³ — Good
5.05.0 µg/m³ — Excellent
4.84.8 µg/m³ — Excellent
4.64.6 µg/m³ — Excellent
4.34.3 µg/m³ — Excellent
5.45.4 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
5.75.7 µg/m³ — Good
5.25.2 µg/m³ — Good
5.75.7 µg/m³ — Good
6.46.4 µg/m³ — Good
4.14.1 µg/m³ — Excellent
5.15.1 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
5.25.2 µg/m³ — Good
5.05.0 µg/m³ — Excellent
4.84.8 µg/m³ — Excellent
4.64.6 µg/m³ — Excellent
4.34.3 µg/m³ — Excellent
5.45.4 µg/m³ — Good
Best months: May, Oct–NovWorst months: Jan, Mar–Apr
Excellent0–5 µg/m³Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Canada
St. John's: 5.1 µg/m³. Typical range in Canada: 5.3–6.6 µg/m³. Low anchor: Glace Bay, 3.8 µg/m³. High anchor: Toronto, 7.6 µg/m³.
194 cities tracked