Worst air pollution Mashhad, today and tomorrow
Today (21 September): Air quality in Mashhad is very poor. AQI and NO2 are very poor; PM2.5, PM10, and PM1 are moderate; O3 is fair; SO2, CO, and HCHO are good. Pollution peaks around 5:30 PM (NO2: 100/100).
Tomorrow (22 September 2026): Air quality in Mashhad is very poor. PM1 increases to poor; all other pollutants stay as today. Pollution peaks around 5:30 PM (NO2: 100/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Mashhad's air quality reflects the enclosed Kashaf River valley basin at 970 metres surrounded by the Binaloud and Hezar Masjed mountain ranges, with vehicle traffic on surrounding roads and the extraordinary Imam Reza shrine pilgrim traffic, industrial, and heating corridor generating elevated PM2.5. The basin's mountain enclosure creates concentration under winter inversions, while windblown Kavir Desert dust contributes PM10 and Mashhad generally maintains among Iran's more challenged major northeastern provincial capital environments throughout the year.
Today - 21 September | Pollution peaks at 17:30
AQI:
Very poor
100/100
PM2.5 (fine particles):
Moderate
49.4/100
PM10 (coarse particles):
Moderate
44.6/100
NO2 (nitrogen dioxide):
Very poor
100/100
O3 (ozone):
Fair
23.1/100
SO2 (sulfur dioxide):
Good
14.8/100
CO (carbon monoxide):
Good
4.0/100
HCHO (formaldehyde):
Good
13.0/100
PM1 (ultrafine particles):
Moderate
59.7/100
Levels show the poorest local air quality during the day
Tomorrow - 22 September | Pollution peaks at 17:30
AQI:
Very poor
100/100
PM2.5 (fine particles):
Moderate
55.6/100
PM10 (coarse particles):
Moderate
46.8/100
NO2 (nitrogen dioxide):
Very poor
100/100
O3 (ozone):
Fair
26.5/100
SO2 (sulfur dioxide):
Good
17.7/100
CO (carbon monoxide):
Good
5.7/100
HCHO (formaldehyde):
Good
16.3/100
PM1 (ultrafine particles):
Poor
69.8/100
Frequently Asked Questions
Is air quality bad in Mashhad right now?
On 21 September 2026, overall air quality in Mashhad is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 5:30 PM (NO2: 100/100).
Will air quality be worse tomorrow in Mashhad?
On 22 September 2026, air quality conditions in Mashhad will be similar to today, with AQI forecast at very poor at 100/100. Pollution peaks around 5:30 PM (NO2: 100/100).
When is air pollution at its worst in Mashhad?
Air quality in Mashhad tends to be worse when traffic on the surrounding roads and the surrounding valley traps air close to the ground. Topographic enclosure in the valley lets pollution accumulate rather than clear out. These wind events can carry dust in from the surrounding arid landscape.
Are air quality levels in Mashhad based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 21 September 2026 at 03:04 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
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Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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