Worst air pollution Saint-Herblain, today and tomorrow
Today (16 July): Air quality in Saint-Herblain is poor. AQI and O3 are poor; NO2 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 60.6/100).
Tomorrow (17 July 2026): Air quality in Saint-Herblain is fair. AQI improves to fair; NO2 decreases to good; O3 decreases to fair; all other pollutants stay as today. Pollution peaks around 6:00 PM (O3: 38.5/100). 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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Saint-Herblain's air quality reflects the greater Nantes metropolitan area's western suburban corridor, with vehicle traffic on the N844 ring road and surrounding industrial and logistics character contributing local sources. Atlantic westerlies from the Loire-Atlantique coast generally provide maritime ventilation, while the Loire river corridor provides additional ventilation and the suburban industrial character keeps Saint-Herblain's readings consistently moderate within the broader Nantes metropolitan area throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Poor
60.6/100
PM2.5 (fine particles):
Good
13.7/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Fair
20.6/100
O3 (ozone):
Poor
60.6/100
SO2 (sulfur dioxide):
Good
1.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.9/100
PM1 (ultrafine particles):
Good
17.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 18:00
AQI:
Fair
38.5/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Good
10.2/100
O3 (ozone):
Fair
38.5/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
12.8/100
Pollen forecast in Saint-Herblain
View pollen forecastFrequently Asked Questions
Is air quality bad in Saint-Herblain right now?
On 16 July 2026, overall air quality in Saint-Herblain is poor. AQI is the main air quality indicator at 60.6/100. Pollution peaks around 1:00 PM (O3: 60.6/100).
Will air quality be worse tomorrow in Saint-Herblain?
On 17 July 2026, air quality conditions in Saint-Herblain will be better than today, with AQI forecast at fair at 38.5/100. Pollution peaks around 6:00 PM (O3: 38.5/100).
When is air pollution at its worst in Saint-Herblain?
For people sensitive to both pollen and pollution in Saint-Herblain, spring days combining river-port traffic and light industry with the oak and plane peak are the ones to watch; the Loire estuary and Atlantic winds ventilate the area, which tends to clear things fairly quickly.
Are air quality levels in Saint-Herblain 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app