Worst air pollution Naaldwijk, today and tomorrow
Today (20 September): Air quality in Naaldwijk is fair. AQI and PM10 are fair; PM2.5, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (PM10: 20.5/100).
Tomorrow (21 September 2026): Air quality in Naaldwijk is fair. PM10 decreases to good; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (NO2: 27.2/100). 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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Naaldwijk's standing as a greenhouse district town within Zuid-Holland plays directly into its air quality picture, with traffic on the A20 motorway and local industry contributing the main sources of urban pollution. the Westland greenhouse belt supports decent air movement, and with Europe's largest concentration of glasshouse horticulture factored in, conditions stay broadly typical for the Netherlands.
Today - 20 September | Pollution peaks at 13:00
AQI:
Fair
20.5/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Fair
20.5/100
NO2 (nitrogen dioxide):
Good
13.9/100
O3 (ozone):
Good
12.0/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
1.5/100
PM1 (ultrafine particles):
Good
1.7/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 10:00
AQI:
Fair
27.2/100
PM2.5 (fine particles):
Good
14.0/100
PM10 (coarse particles):
Good
17.8/100
NO2 (nitrogen dioxide):
Fair
27.2/100
O3 (ozone):
Good
11.3/100
SO2 (sulfur dioxide):
Good
1.9/100
CO (carbon monoxide):
Good
0.7/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
3.7/100
Pollen forecast in Naaldwijk
View pollen forecastFrequently Asked Questions
Is air quality bad in Naaldwijk right now?
On 20 September 2026, overall air quality in Naaldwijk is fair. AQI is the main air quality indicator at 20.5/100. Pollution peaks around 1:00 PM (PM10: 20.5/100).
Will air quality be worse tomorrow in Naaldwijk?
On 21 September 2026, air quality conditions in Naaldwijk will be similar to today, with AQI forecast at fair at 27.2/100. Pollution peaks around 10:00 AM (NO2: 27.2/100).
When is air pollution at its worst in Naaldwijk?
In Naaldwijk, air quality is most likely to dip when pollen from birch, oak, and alder peaks over the spring and early-summer period, or on hot, still days when local traffic on the A20 and industry let emissions build up; onshore winds across the delta typically keep pollutants from settling. The remainder of the year tends to bring conditions typical of the Netherlands as a whole.
Are air quality levels in Naaldwijk 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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