Air Quality Lab — Hagåtña, Guam
Air Quality Profile·
Hagåtña reports an annual PM2.5 of 3.1 µg/m³. That's below the WHO 2021 annual guideline of 5 µg/m³ — cleaner than most cities on the continent.
Hagåtña
Guam
GuamAnnual Average
ExcellentWHO annual classification
3.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2.92.9 µg/m³ — Excellent
3.03.0 µg/m³ — Excellent
2.82.8 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
2.92.9 µg/m³ — Excellent
3.23.2 µg/m³ — Excellent
3.23.2 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
3.83.8 µg/m³ — Excellent
4.04.0 µg/m³ — Excellent
2.42.4 µg/m³ — Excellent
2.62.6 µg/m³ — Excellent
Jan
Feb
Mar
Apr
May
Jun
2.92.9 µg/m³ — Excellent
3.03.0 µg/m³ — Excellent
2.82.8 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
2.92.9 µg/m³ — Excellent
3.23.2 µg/m³ — Excellent
Jul
Aug
Sep
Oct
Nov
Dec
3.23.2 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
3.83.8 µg/m³ — Excellent
4.04.0 µg/m³ — Excellent
2.42.4 µg/m³ — Excellent
2.62.6 µg/m³ — Excellent
Best months: Mar, Nov–DecWorst months: Aug–Oct
Excellent0–5 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Guam
Hagåtña: 3.1 µg/m³. Typical range in Guam: 3.1–3.5 µg/m³. Low anchor: Guam Government House, 3.1 µg/m³. High anchor: Tamuning-Tumon-Harmon Village, 3.5 µg/m³.
7 cities tracked