Air Quality
1.7/5
33.2 µg/m³Unhealthy
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: ●●●
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.
KarajIran
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: ●●●
Who thrives in Karaj
Great fit
Decent fit
Things to consider in Karaj
PM2.5 annual average of 33.2 µg/m³ exceeds the WHO interim target of 15 µg/m³. The WHO guideline value is 5 µg/m³.
Data sources: WHO (air quality), OECD (safety).
Why not Karaj?
Why not Karaj? Honestly, air quality is a meaningful downside — at 33.2 µg/m³ annual PM2.5, Karaj sits above the EU limit, which may matter for allergy sufferers or long-term residents.
Frequently asked about Karaj
▶How many sunny days does Karaj have per year?
Karaj averages approximately 316 sunny days per year, based on historical climate data.
▶What is the air quality in Karaj?
Karaj has an annual PM2.5 concentration of 33.2 µg/m³, classified as "Poor" by WHO standards. Significantly above WHO targets. Increased health risk, especially outdoors.