Worst air pollution Hermanus, today and tomorrow
Today (16 July): Air quality in Hermanus is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 22.0/100).
Tomorrow (17 July 2026): Air quality in Hermanus is good. AQI improves to good; NO2 decreases to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 18.2/100). 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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Hermanus lies roughly 90 km southeast of Cape Town. Hermanus's air quality benefits from its Garden Route coastal position, with consistent sea breezes providing reliable maritime ventilation across the region. Vehicle traffic and tourism and forestry operations are the main local sources of pollution, while the area's mild, moist climate generally keeps particulate levels low. Conditions like these are common along much of the Garden Route.
Today - 16 July | Pollution peaks at 00:00
AQI:
Fair
22.0/100
PM2.5 (fine particles):
Good
16.3/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Fair
22.0/100
O3 (ozone):
Fair
20.3/100
SO2 (sulfur dioxide):
Good
17.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.8/100
PM1 (ultrafine particles):
Good
16.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Good
18.2/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Good
18.2/100
O3 (ozone):
Good
15.0/100
SO2 (sulfur dioxide):
Good
15.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
16.9/100
Pollen forecast in Hermanus
View pollen forecastSports venues in Hermanus
Frequently Asked Questions
Is air quality bad in Hermanus right now?
On 16 July 2026, overall air quality in Hermanus is fair. AQI is the main air quality indicator at 22.0/100. Pollution peaks around 12:00 AM (NO2: 22.0/100).
Will air quality be worse tomorrow in Hermanus?
On 17 July 2026, air quality conditions in Hermanus will be better than today, with AQI forecast at good at 18.2/100. Pollution peaks around 11:00 PM (NO2: 18.2/100).
When is air pollution at its worst in Hermanus?
At Hermanus, air quality rarely varies much across the seasons, since consistent rainfall and onshore winds provide reliable ventilation year-round. The only brief exceptions come on calm days, when emissions from tourism and forestry operations can build up slightly before clearing away again, a seasonal pattern typical of the wider Garden Route coastline.
Are air quality levels in Hermanus 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