Air Quality Lab — Sligo, Ireland
Air Quality Profile·
Sligo reports an annual PM2.5 of 5.9 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Sligo
Ireland
IrelandAnnual Average
GoodWHO annual classification
5.9µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
7.97.9 µg/m³ — Good
7.77.7 µg/m³ — Good
8.38.3 µg/m³ — Good
6.16.1 µg/m³ — Good
4.54.5 µg/m³ — Excellent
4.74.7 µg/m³ — Excellent
3.83.8 µg/m³ — Excellent
4.64.6 µg/m³ — Excellent
4.54.5 µg/m³ — Excellent
5.45.4 µg/m³ — Good
6.46.4 µg/m³ — Good
7.47.4 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
7.97.9 µg/m³ — Good
7.77.7 µg/m³ — Good
8.38.3 µg/m³ — Good
6.16.1 µg/m³ — Good
4.54.5 µg/m³ — Excellent
4.74.7 µg/m³ — Excellent
Jul
Aug
Sep
Oct
Nov
Dec
3.83.8 µg/m³ — Excellent
4.64.6 µg/m³ — Excellent
4.54.5 µg/m³ — Excellent
5.45.4 µg/m³ — Good
6.46.4 µg/m³ — Good
7.47.4 µg/m³ — Good
Best months: May, Jul, SepWorst months: Jan–Mar
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 Ireland
Sligo: 5.9 µg/m³. Typical range in Ireland: 6.4–6.8 µg/m³. Low anchor: Letterkenny, 5.9 µg/m³. High anchor: Dublin, 7.3 µg/m³.
29 cities tracked