Harelbeke, Flanders, 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
Harelbeke, Flanders, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (28th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 34 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 27th Sep - 28th Sep 2026
Harelbeke, Flanders, Belgium
7 AM27th Sep 2026
8 PM
6 AM28th Sep 2026
68AQI
36AQI
43AQI
23AQI
In the last 24 hours,
Harelbeke's AQI reached its highest point of 68 at 3 PM during the Day, while the lowest point, 23, was recorded at 5 AM during the Night between 27th Sep and 28th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Harelbeke, Flanders, Belgium
19°C17/23°C
18°C15/22°C
19°C15/23°C
19°C15/24°C
19°C17/21°C
21°C19/25°C
18°C14/23°C
19°C13/26°C
22°C19/27°C
18°C15/21°C
15°C12/17°C
16°C12/22°C
18°C15/23°C
18°C14/24°C
18°C17/21°C
20°C17/24°C
21°C17/27°C
17°C14/20°C
16°C14/19°C
16°C12/20°C
18°C16/23°C
18°C15/20°C
16°C13/21°C
18°C14/23°C
18°C14/24°C
17°C13/21°C
19°C13/26°C
18°C16/21°C
19°C14/25°C
18°C16/19°C
41AQI
27AQI
37AQI
28AQI
2026 Days Vs Air Quality
Harelbeke, Flanders, Belgium
78%
209
21%
56
1%
3
Total number of days with different AQI categories in last 271 days in 2026 (94 days remaining)
Under WHO’s Safe Air Quality Limits: 78%
Health Risk Level:
Low
In 2026, 78% of 271 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Harelbeke, Flanders, Belgium
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI (US)
18AQI (US)
22AQI (US)
23AQI (US)
48AQI (US)
42AQI (US)
59AQI (US)
54AQI (US)
15AQI (US)
42AQI (US)
74AQI (US)
27AQI (US)
29AQI (US)
50AQI (US)
30AQI (US)
24AQI (US)
50AQI (US)
70AQI (US)
73AQI (US)
62AQI (US)
30AQI (US)
61AQI (US)
33AQI (US)
30AQI (US)
73AQI (US)
131AQI (US)
50AQI (US)
61AQI (US)
72AQI (US)
39AQI (US)
28AQI (US)
59AQI (US)
64AQI (US)
77AQI (US)
25AQI (US)
74AQI (US)
61AQI (US)
24AQI (US)
36AQI (US)
63AQI (US)
39AQI (US)
23AQI (US)
32AQI (US)
56AQI (US)
43AQI (US)
58AQI (US)
22AQI (US)
24AQI (US)
49AQI (US)
50AQI (US)
55AQI (US)
31AQI (US)
17AQI (US)
30AQI (US)
35AQI (US)
45AQI (US)
64AQI (US)
54AQI (US)
17AQI (US)
30AQI (US)
38AQI (US)
73AQI (US)
71AQI (US)
64AQI (US)
76AQI (US)
116AQI (US)
105AQI (US)
82AQI (US)
58AQI (US)
28AQI (US)
22AQI (US)
26AQI (US)
28AQI (US)
37AQI (US)
18AQI (US)
25AQI (US)
30AQI (US)
74AQI (US)
96AQI (US)
47AQI (US)
77AQI (US)
93AQI (US)
95AQI (US)
25AQI (US)
12AQI (US)
42AQI (US)
15AQI (US)
15AQI (US)
23AQI (US)
27AQI (US)
67AQI (US)
47AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
25AQI (US)
25AQI (US)
43AQI (US)
57AQI (US)
19AQI (US)
29AQI (US)
26AQI (US)
33AQI (US)
35AQI (US)
34AQI (US)
18AQI (US)
41AQI (US)
24AQI (US)
17AQI (US)
52AQI (US)
54AQI (US)
51AQI (US)
58AQI (US)
37AQI (US)
30AQI (US)
27AQI (US)
21AQI (US)
17AQI (US)
24AQI (US)
57AQI (US)
38AQI (US)
73AQI (US)
52AQI (US)
24AQI (US)
51AQI (US)
52AQI (US)
42AQI (US)
18AQI (US)
18AQI (US)
23AQI (US)
20AQI (US)
28AQI (US)
36AQI (US)
36AQI (US)
34AQI (US)
32AQI (US)
33AQI (US)
33AQI (US)
34AQI (US)
38AQI (US)
54AQI (US)
38AQI (US)
25AQI (US)
47AQI (US)
25AQI (US)
49AQI (US)
61AQI (US)
35AQI (US)
22AQI (US)
24AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
21AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
20AQI (US)
22AQI (US)
20AQI (US)
40AQI (US)
50AQI (US)
27AQI (US)
18AQI (US)
45AQI (US)
27AQI (US)
51AQI (US)
65AQI (US)
56AQI (US)
44AQI (US)
63AQI (US)
60AQI (US)
38AQI (US)
34AQI (US)
9AQI (US)
20AQI (US)
21AQI (US)
18AQI (US)
17AQI (US)
24AQI (US)
13AQI (US)
25AQI (US)
12AQI (US)
36AQI (US)
42AQI (US)
60AQI (US)
50AQI (US)
38AQI (US)
29AQI (US)
50AQI (US)
42AQI (US)
46AQI (US)
61AQI (US)
50AQI (US)
24AQI (US)
28AQI (US)
25AQI (US)
28AQI (US)
27AQI (US)
29AQI (US)
46AQI (US)
24AQI (US)
25AQI (US)
29AQI (US)
37AQI (US)
39AQI (US)
34AQI (US)
33AQI (US)
32AQI (US)
30AQI (US)
41AQI (US)
30AQI (US)
22AQI (US)
31AQI (US)
25AQI (US)
33AQI (US)
33AQI (US)
28AQI (US)
28AQI (US)
32AQI (US)
42AQI (US)
54AQI (US)
26AQI (US)
35AQI (US)
37AQI (US)
40AQI (US)
35AQI (US)
24AQI (US)
25AQI (US)
35AQI (US)
27AQI (US)
29AQI (US)
34AQI (US)
43AQI (US)
39AQI (US)
24AQI (US)
53AQI (US)
21AQI (US)
25AQI (US)
35AQI (US)
36AQI (US)
17AQI (US)
25AQI (US)
26AQI (US)
29AQI (US)
30AQI (US)
23AQI (US)
36AQI (US)
28AQI (US)
26AQI (US)
21AQI (US)
34AQI (US)
28AQI (US)
31AQI (US)
51AQI (US)
37AQI (US)
71AQI (US)
32AQI (US)
30AQI (US)
38AQI (US)
40AQI (US)
32AQI (US)
34AQI (US)
38AQI (US)
41AQI (US)
34AQI (US)
47AQI (US)
44AQI (US)
51AQI (US)
34AQI (US)
38AQI (US)
32AQI (US)
33AQI (US)
33AQI (US)
33AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
March51AQI (US)
Lowest AQI (US) recorded in
June32AQI (US)
202545AQI (US)
Highest AQI (US) recorded in
February71AQI (US)
Lowest AQI (US) recorded in
September25AQI (US)
202440AQI (US)
Highest AQI (US) recorded in
January53AQI (US)
Lowest AQI (US) recorded in
April25AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
April52AQI (US)
Lowest AQI (US) recorded in
July29AQI (US)
202247AQI (US)
Highest AQI (US) recorded in
March81AQI (US)
Lowest AQI (US) recorded in
November28AQI (US)
202153AQI (US)
Highest AQI (US) recorded in
March64AQI (US)
Lowest AQI (US) recorded in
August37AQI (US)
202046AQI (US)
Highest AQI (US) recorded in
April67AQI (US)
Lowest AQI (US) recorded in
July30AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Harelbeke's annual 2026 AQI (US) (38) shows an average percentage change of -15.4% (improved AQI (US)) compared to previous years: 2020 (46), 2021 (53), 2022 (47), 2023 (41), 2024 (40), 2025 (45).