City in Razavi Khorasan Province, Iran
Air quality in Mashhad
Very polluted
The annual average PM2.5 in Mashhad was 29 µg/m³ in 2020, about 5.8 times the WHO guideline of 5 µg/m³. Traffic smog builds in winter inversions.
Key facts
- PM2.5: 29 µg/m³ yearly average (2020). Measured at Mashhad.
- Worst months: Nov–Jan.
- Recent average: 30.8 µg/m³ over the last five years of measurements.
PM2.5 by year
| Year | Annual average |
|---|---|
| 2020 | |
| 2019 | |
| 2018 | |
| 2016 |
Air quality across Iran
Quick answers
Is the air in Mashhad bad?
Very polluted: 29 µg/m³ of PM2.5 on average, 5.8× the WHO guideline. It's usually worst in Nov–Jan.
When is the air worst in Mashhad?
Traffic smog builds in winter inversions.
How does Mashhad compare with the rest of Iran?
People in Iran breathe 40 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 29 µg/m³ measured here.
More about Mashhad
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Sources
- WHO Ambient Air Quality Database
- WHO air quality guidelines (2021)
- Live air quality map (WAQI)
- Iran e-visa portal
- UK FCDO travel advice: Iran
Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.