Air Quality Lab — Karaj, Iran
Air Quality Profile·
Karaj reports an annual PM2.5 of 33.2 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Karaj
Iran
IranAnnual Average
PoorWHO annual classification
33.2µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3333 µg/m³ — Poor
3232 µg/m³ — Poor
3333 µg/m³ — Poor
3939 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3434 µg/m³ — Poor
3535 µg/m³ — Unhealthy
3030 µg/m³ — Poor
3434 µg/m³ — Poor
3131 µg/m³ — Poor
3535 µg/m³ — Poor
3030 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
3333 µg/m³ — Poor
3232 µg/m³ — Poor
3333 µg/m³ — Poor
3939 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3434 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
3535 µg/m³ — Unhealthy
3030 µg/m³ — Poor
3434 µg/m³ — Poor
3131 µg/m³ — Poor
3535 µg/m³ — Poor
3030 µg/m³ — Poor
Best months: Aug, Oct, DecWorst months: Apr, Jul, Nov
Poor25–35 µg/m³Unhealthy35–50 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Iran
Karaj: 33.2 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