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Air quality, pollen & UV in Leiden
Leiden has moderate air quality today (European AQI 55), with all monitored pollen types low or absent and the UV index peaking at 3 (low). The day stays dry: temperatures rise from 13°C at 08:00 to 20°C at 14:00, with light wind from the south (9 km/h) and 92% humidity.
With an air quality index of 55, Leiden today sits around the average for Netherlands (52). Of the 25 cities we track in Netherlands, Leiden ranks 20 for the cleanest air. Right now the index is driven mainly by PM2.5 (30 µg/m³). Pollen counts are low across the board right now.
Pollutant breakdownDetails
Air quality today
Good to do today?
Best time to be outside
Who should take care today
- 🫁 Asthma / COPD Take it easier outdoors and keep any medication handy.
- 🧒 Children Take it easier outdoors and keep any medication handy.
Pollen levels right now
| Pollen | Level | Count |
|---|---|---|
| Alder | None | 0 grains/m³ |
| Birch | None | 0 grains/m³ |
| Grass | None | 0 grains/m³ |
| Mugwort | None | 0 grains/m³ |
| Olive | None | 0 grains/m³ |
| Ragweed | None | 0 grains/m³ |
Sun & UV today
UV index by hour
Sun protection
Next days outlook
| Date | Max AQI | Max UV |
|---|---|---|
| 5 Oct | 58 Moderate | 3 Low |
| 6 Oct | 57 Moderate | 2 Low |
| 7 Oct | 62 Poor | 2 Low |
What do these values mean?
The European Air Quality Index (EAQI) runs from good to extremely poor based on PM2.5, PM10, NO₂ and ozone. Lower is better.
Pollen is shown in grains per m³ of air and banded from none to very high. Thresholds differ per plant type and are indicative.
The UV index runs from low (0–2) to extreme (11+). From moderate (3+), wear sunscreen and seek shade around midday.
Leiden air quality, pollen & UV - FAQ
- Is the air quality in Leiden good right now?
- Leiden has moderate air quality today (European AQI 55), with all monitored pollen types low or absent and the UV index peaking at 3 (low). The day stays dry: temperatures rise from 13°C at 08:00 to 20°C at 14:00, with light wind from the south (9 km/h) and 92% humidity. Sensitive groups should consider limiting prolonged outdoor exertion.
- What is the pollen forecast in Leiden today?
- All monitored pollen types are low or absent in Leiden right now.
- How often is the Leiden air quality data updated?
- Air quality and pollen for Leiden are refreshed every day from the Copernicus CAMS European model via Open-Meteo.
- How strong is the UV in Leiden today?
- The UV index in Leiden peaks at 3 (low) today. From moderate (3 or higher), use sunscreen and seek shade around midday.