Air Quality Lab — Zanjan, Iran
Air Quality Profile·
Zanjan reports an annual PM2.5 of 27.4 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Zanjan
Iran
IranAnnual Average
PoorWHO annual classification
27.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2727 µg/m³ — Poor
2727 µg/m³ — Poor
3131 µg/m³ — Poor
3030 µg/m³ — Poor
2929 µg/m³ — Poor
2727 µg/m³ — Poor
2222 µg/m³ — Moderate
2424 µg/m³ — Moderate
2626 µg/m³ — Poor
2525 µg/m³ — Poor
3232 µg/m³ — Poor
3030 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
2727 µg/m³ — Poor
2727 µg/m³ — Poor
3131 µg/m³ — Poor
3030 µg/m³ — Poor
2929 µg/m³ — Poor
2727 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
2222 µg/m³ — Moderate
2424 µg/m³ — Moderate
2626 µg/m³ — Poor
2525 µg/m³ — Poor
3232 µg/m³ — Poor
3030 µg/m³ — Poor
Best months: Jul–Aug, OctWorst months: Mar–Apr, Nov
Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Iran
Zanjan: 27.4 µg/m³. Typical range in Iran: 29.1–36.7 µg/m³. Low anchor: Rasht, 22.0 µg/m³. High anchor: Ahvaz, 100.4 µg/m³.
203 cities tracked