Air Quality Lab — Fountain, United States
Air Quality Profile·
Fountain 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.
Fountain
United States
United StatesAnnual Average
GoodWHO annual classification
5.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4.84.8 µg/m³ — Excellent
4.94.9 µg/m³ — Excellent
4.94.9 µg/m³ — Excellent
5.45.4 µg/m³ — Good
4.34.3 µg/m³ — Excellent
5.75.7 µg/m³ — Good
5.45.4 µg/m³ — Good
6.46.4 µg/m³ — Good
5.85.8 µg/m³ — Good
4.64.6 µg/m³ — Excellent
4.44.4 µg/m³ — Excellent
4.74.7 µg/m³ — Excellent
Jan
Feb
Mar
Apr
May
Jun
4.84.8 µg/m³ — Excellent
4.94.9 µg/m³ — Excellent
4.94.9 µg/m³ — Excellent
5.45.4 µg/m³ — Good
4.34.3 µg/m³ — Excellent
5.75.7 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
5.45.4 µg/m³ — Good
6.46.4 µg/m³ — Good
5.85.8 µg/m³ — Good
4.64.6 µg/m³ — Excellent
4.44.4 µg/m³ — Excellent
4.74.7 µg/m³ — Excellent
Best months: May, Oct–NovWorst months: Jun, Aug–Sep
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 United States
Fountain: 5.1 µg/m³. Typical range in United States: 6.4–7.8 µg/m³. Low anchor: Anchorage, 4.3 µg/m³. High anchor: Los Angeles, 13.8 µg/m³.
2,121 cities tracked