Hoorn, Noord Holland, Netherlands Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Hoorn, Noord Holland, Netherlands
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 20 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Hoorn, Noord Holland, Netherlands
5 AM2nd Aug 2025
9 PM
4 AM3rd Aug 2025
AQI
AQI
21AQI
16AQI
In the last 24 hours,
Hoorn's AQI reached its highest point of 21 at 10 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hoorn, Noord Holland, Netherlands
18°C12/22°C
18°C17/20°C
18°C15/20°C
16°C13/18°C
15°C12/18°C
17°C14/21°C
18°C14/22°C
19°C15/22°C
19°C16/23°C
20°C17/22°C
20°C16/24°C
19°C16/22°C
17°C15/20°C
18°C15/22°C
20°C15/24°C
22°C18/28°C
19°C16/25°C
19°C16/23°C
19°C16/22°C
19°C16/22°C
19°C16/23°C
19°C16/21°C
20°C15/25°C
18°C15/21°C
17°C15/20°C
17°C14/21°C
17°C14/20°C
18°C15/21°C
17°C15/19°C
--°C/°C
--°C/°C
24AQI
24AQI
25AQI
24AQI
2025 Days Vs Air Quality
Hoorn, Noord Holland, Netherlands
95%
62
5%
3
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 214 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Hoorn, Noord Holland, Netherlands
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
46AQI
35AQI
36AQI
33AQI
31AQI
31AQI
23AQI
23AQI
20AQI
22AQI
23AQI
43AQI
57AQI
39AQI
42AQI
54AQI
53AQI
39AQI
35AQI
36AQI
39AQI
31AQI
24AQI
29AQI
34AQI
28AQI
29AQI
28AQI
30AQI
25AQI
22AQI
21AQI
25AQI
29AQI
49AQI
28AQI
23AQI
22AQI
24AQI
19AQI
20AQI
23AQI
27AQI
24AQI
21AQI
28AQI
27AQI
25AQI
23AQI
20AQI
23AQI
38AQI
48AQI
29AQI
22AQI
22AQI
24AQI
26AQI
35AQI
25AQI
24AQI
19AQI
18AQI
19AQI
20AQI
39AQI
32AQI
26AQI
20AQI
No. of days
202529AQI
Highest AQI recorded in
May39AQI
Lowest AQI recorded in
August20AQI
Most & Least Polluted Years Over the Last 1 Years
Hoorn's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .