Grace Hollogne, Wallonia, Belgium Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Grace Hollogne, Wallonia, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 18 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Grace Hollogne, Wallonia, Belgium
6 AM19th Sep 2025
8 PM
5 AM20th Sep 2025
20AQI
16AQI
20AQI
16AQI
In the last 24 hours,
Grace Hollogne's AQI reached its highest point of 20 at 6 AM during the Night, while the lowest point, 16, was recorded at 4 AM during the Night between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Grace Hollogne, Wallonia, Belgium
18°C12/25°C
15°C9/20°C
14°C9/19°C
15°C8/22°C
17°C9/26°C
21°C13/30°C
21°C15/27°C
18°C13/23°C
16°C12/22°C
17°C11/22°C
18°C15/23°C
18°C14/23°C
17°C12/22°C
19°C16/24°C
18°C13/23°C
16°C11/22°C
17°C12/23°C
21°C13/29°C
20°C16/25°C
14°C11/17°C
16°C11/22°C
15°C11/19°C
14°C11/18°C
14°C12/18°C
14°C9/19°C
17°C14/20°C
15°C12/17°C
14°C10/19°C
17°C13/24°C
19°C12/27°C
--°C/°C
21AQI
19AQI
22AQI
19AQI
2025 Days Vs Air Quality
Grace Hollogne, Wallonia, Belgium
96%
110
4%
4
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 263 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
Grace Hollogne, Wallonia, Belgium
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
17AQI
15AQI
28AQI
19AQI
27AQI
25AQI
26AQI
17AQI
14AQI
15AQI
17AQI
22AQI
45AQI
39AQI
39AQI
42AQI
41AQI
32AQI
31AQI
31AQI
32AQI
31AQI
27AQI
26AQI
23AQI
20AQI
20AQI
18AQI
18AQI
18AQI
16AQI
18AQI
19AQI
20AQI
30AQI
29AQI
24AQI
22AQI
20AQI
20AQI
19AQI
20AQI
25AQI
21AQI
22AQI
23AQI
23AQI
20AQI
19AQI
22AQI
21AQI
22AQI
21AQI
17AQI
16AQI
14AQI
26AQI
34AQI
36AQI
32AQI
25AQI
24AQI
25AQI
21AQI
22AQI
21AQI
20AQI
22AQI
22AQI
23AQI
24AQI
23AQI
35AQI
34AQI
40AQI
41AQI
51AQI
56AQI
56AQI
54AQI
42AQI
28AQI
27AQI
33AQI
34AQI
25AQI
22AQI
21AQI
21AQI
25AQI
29AQI
32AQI
24AQI
18AQI
17AQI
17AQI
17AQI
17AQI
19AQI
18AQI
19AQI
19AQI
23AQI
24AQI
23AQI
20AQI
17AQI
17AQI
16AQI
15AQI
16AQI
17AQI
15AQI
18AQI
20AQI
26AQI
23AQI
30AQI
18AQI
No. of days
202525AQI
Highest AQI recorded in
August30AQI
Lowest AQI recorded in
September18AQI
Most & Least Polluted Years Over the Last 1 Years
Grace Hollogne's annual 2025 AQI (25) shows an average percentage change of NaN% (improved AQI) compared to previous years: .