What is the air quality in Haarlem?

Haarlem, Netherlands has an annual US AQI of 57 (Reasonable) and average PM2.5 of 12.8 µg/m³, ranking #1658 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Haarlem?

July is typically the cleanest month (AQI 49) and March the most polluted (AQI 65).

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Global rank	City	Continent	AQI	PM2.5
1658	Haarlem, Netherlands	Europe	AQI 57	PM2.5 12.8 µg/m³