Flemalle, Region wallonne, Belgium Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Flemalle, Region wallonne, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Oct - 18th Oct 2025
Flemalle, Region wallonne, Belgium
7 AM17th Oct 2025
7 PM
6 AM18th Oct 2025
55AQI
36AQI
57AQI
38AQI
In the last 24 hours,
Flemalle's AQI reached its highest point of 57 at 6 AM during the Night, while the lowest point, 36, was recorded at 6 PM during the Day between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Flemalle, Region wallonne, Belgium
17°C13/24°C
19°C12/27°C
20°C17/27°C
14°C10/15°C
11°C7/15°C
12°C8/16°C
12°C9/15°C
9°C8/9°C
12°C8/16°C
12°C9/17°C
13°C7/19°C
13°C9/18°C
13°C9/18°C
12°C8/17°C
11°C6/17°C
12°C9/16°C
13°C11/17°C
11°C10/13°C
11°C8/13°C
14°C11/19°C
13°C10/16°C
13°C9/16°C
13°C8/18°C
12°C9/17°C
12°C8/17°C
14°C13/16°C
12°C8/13°C
12°C11/14°C
11°C10/14°C
10°C8/13°C
--°C/°C
40AQI
36AQI
41AQI
32AQI
2025 Days Vs Air Quality
Flemalle, Region wallonne, Belgium
94%
133
6%
9
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 291 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
Flemalle, Region wallonne, Belgium
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
15AQI
33AQI
20AQI
30AQI
27AQI
28AQI
18AQI
14AQI
14AQI
14AQI
22AQI
45AQI
39AQI
40AQI
43AQI
40AQI
33AQI
31AQI
31AQI
29AQI
30AQI
27AQI
24AQI
23AQI
20AQI
20AQI
18AQI
18AQI
18AQI
17AQI
20AQI
20AQI
20AQI
32AQI
31AQI
26AQI
25AQI
20AQI
20AQI
19AQI
19AQI
24AQI
21AQI
21AQI
21AQI
22AQI
21AQI
20AQI
22AQI
22AQI
22AQI
21AQI
17AQI
16AQI
14AQI
28AQI
36AQI
37AQI
33AQI
25AQI
26AQI
26AQI
22AQI
22AQI
20AQI
20AQI
22AQI
22AQI
23AQI
24AQI
23AQI
37AQI
38AQI
41AQI
42AQI
51AQI
56AQI
56AQI
53AQI
42AQI
28AQI
27AQI
33AQI
34AQI
25AQI
22AQI
21AQI
21AQI
25AQI
29AQI
31AQI
24AQI
18AQI
17AQI
16AQI
17AQI
17AQI
20AQI
18AQI
18AQI
19AQI
23AQI
24AQI
23AQI
20AQI
17AQI
17AQI
16AQI
15AQI
16AQI
17AQI
15AQI
20AQI
19AQI
19AQI
15AQI
14AQI
12AQI
11AQI
21AQI
29AQI
15AQI
42AQI
43AQI
61AQI
35AQI
40AQI
38AQI
47AQI
50AQI
47AQI
41AQI
50AQI
57AQI
69AQI
67AQI
47AQI
49AQI
45AQI
47AQI
52AQI
23AQI
26AQI
24AQI
31AQI
20AQI
50AQI
No. of days
202528AQI
Highest AQI recorded in
October50AQI
Lowest AQI recorded in
September20AQI
Most & Least Polluted Years Over the Last 1 Years
Flemalle's annual 2025 AQI (28) shows an average percentage change of NaN% (improved AQI) compared to previous years: .