Air Quality Lab — Centralia, United States
Air Quality Profile·
Centralia 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.
Centralia
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
5.15.1 µg/m³ — Good
4.94.9 µg/m³ — Excellent
4.04.0 µg/m³ — Excellent
4.54.5 µg/m³ — Excellent
3.63.6 µg/m³ — Excellent
5.35.3 µg/m³ — Good
5.45.4 µg/m³ — Good
5.45.4 µg/m³ — Good
7.17.1 µg/m³ — Good
5.95.9 µg/m³ — Good
5.25.2 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
4.84.8 µg/m³ — Excellent
5.15.1 µg/m³ — Good
4.94.9 µg/m³ — Excellent
4.04.0 µg/m³ — Excellent
4.54.5 µg/m³ — Excellent
3.63.6 µg/m³ — Excellent
Jul
Aug
Sep
Oct
Nov
Dec
5.35.3 µg/m³ — Good
5.45.4 µg/m³ — Good
5.45.4 µg/m³ — Good
7.17.1 µg/m³ — Good
5.95.9 µg/m³ — Good
5.25.2 µg/m³ — Good
Best months: Apr–JunWorst months: Sep–Nov
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
Centralia: 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