Worst air pollution Gray, today and tomorrow
Today (20 September): Air quality in Gray is fair. AQI, O3, and PM1 are fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 21.2/100).
Tomorrow (21 September 2026): Air quality in Gray is fair. PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 24.4/100). Airmine updates local air quality forecasts four times daily.
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Air quality in Gray reflects light industry and river-valley traffic as the main local source, alongside its setting near the Yonne, though the Saone and Doubs valleys channel airflow, limiting how much pollution can build up locally. Winter brings the worst air quality, as calm, cold conditions trap heating and traffic emissions in the river valleys; summer is generally cleaner, though occasional heatwaves can push ozone levels up.
Today - 20 September | Pollution peaks at 15:00
AQI:
Fair
21.2/100
PM2.5 (fine particles):
Good
16.6/100
PM10 (coarse particles):
Good
15.6/100
NO2 (nitrogen dioxide):
Good
18.8/100
O3 (ozone):
Fair
21.2/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Fair
20.6/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 17:00
AQI:
Fair
24.4/100
PM2.5 (fine particles):
Good
12.3/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Good
12.5/100
O3 (ozone):
Fair
24.4/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
13.6/100
Pollen forecast in Gray
View pollen forecastFrequently Asked Questions
Is air quality bad in Gray right now?
On 20 September 2026, overall air quality in Gray is fair. AQI is the main air quality indicator at 21.2/100. Pollution peaks around 3:00 PM (O3: 21.2/100).
Will air quality be worse tomorrow in Gray?
On 21 September 2026, air quality conditions in Gray will be similar to today, with AQI forecast at fair at 24.4/100. Pollution peaks around 5:00 PM (O3: 24.4/100).
When is air pollution at its worst in Gray?
In Gray, allergy sufferers and those sensitive to pollution both notice more symptoms when light industry and river-valley traffic coincides with heavy oak and hornbeam pollen; the Saone and Doubs valleys channel airflow, keeping bad spells relatively short.
Are air quality levels in Gray 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: 20 September 2026 at 14:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
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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