Leuven, 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
Leuven, Flanders, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (28th September):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 41 of Good air quality on the same day.
Day & Night AQI Trend: 27th Sep - 28th Sep 2026
Leuven, Flanders, Belgium
7 AM27th Sep 2026
8 PM
6 AM28th Sep 2026
57AQI
29AQI
46AQI
23AQI
In the last 24 hours,
Leuven's AQI reached its highest point of 57 at 2 PM during the Day, while the lowest point, 23, was recorded at 9 PM during the Night between 27th Sep and 28th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Leuven, Flanders, Belgium
19°C17/23°C
17°C15/20°C
17°C13/23°C
18°C13/23°C
19°C17/22°C
21°C18/26°C
17°C13/22°C
18°C11/25°C
23°C18/29°C
19°C16/23°C
15°C11/18°C
15°C10/20°C
16°C13/21°C
18°C13/23°C
18°C16/21°C
19°C16/23°C
21°C16/29°C
16°C13/20°C
15°C12/20°C
15°C10/20°C
18°C15/22°C
17°C13/19°C
15°C11/21°C
15°C11/21°C
17°C12/23°C
15°C11/19°C
17°C11/24°C
18°C14/23°C
18°C13/25°C
18°C16/22°C
30AQI
21AQI
27AQI
22AQI
2026 Days Vs Air Quality
Leuven, Flanders, Belgium
85%
229
13%
34
2%
5
Total number of days with different AQI categories in last 271 days in 2026 (94 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2026, 85% 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
Leuven, Flanders, Belgium
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI (US)
21AQI (US)
29AQI (US)
25AQI (US)
41AQI (US)
44AQI (US)
34AQI (US)
41AQI (US)
11AQI (US)
52AQI (US)
63AQI (US)
17AQI (US)
12AQI (US)
26AQI (US)
20AQI (US)
14AQI (US)
25AQI (US)
53AQI (US)
62AQI (US)
59AQI (US)
29AQI (US)
39AQI (US)
49AQI (US)
43AQI (US)
72AQI (US)
118AQI (US)
53AQI (US)
40AQI (US)
66AQI (US)
36AQI (US)
18AQI (US)
31AQI (US)
30AQI (US)
46AQI (US)
12AQI (US)
42AQI (US)
41AQI (US)
31AQI (US)
51AQI (US)
64AQI (US)
49AQI (US)
28AQI (US)
34AQI (US)
54AQI (US)
58AQI (US)
46AQI (US)
17AQI (US)
28AQI (US)
41AQI (US)
37AQI (US)
64AQI (US)
30AQI (US)
11AQI (US)
26AQI (US)
45AQI (US)
21AQI (US)
56AQI (US)
46AQI (US)
14AQI (US)
28AQI (US)
37AQI (US)
54AQI (US)
86AQI (US)
65AQI (US)
63AQI (US)
122AQI (US)
120AQI (US)
94AQI (US)
55AQI (US)
39AQI (US)
22AQI (US)
26AQI (US)
35AQI (US)
43AQI (US)
23AQI (US)
28AQI (US)
37AQI (US)
76AQI (US)
96AQI (US)
53AQI (US)
70AQI (US)
102AQI (US)
105AQI (US)
24AQI (US)
10AQI (US)
33AQI (US)
37AQI (US)
26AQI (US)
24AQI (US)
29AQI (US)
41AQI (US)
55AQI (US)
36AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
31AQI (US)
26AQI (US)
40AQI (US)
26AQI (US)
35AQI (US)
29AQI (US)
42AQI (US)
71AQI (US)
46AQI (US)
30AQI (US)
53AQI (US)
26AQI (US)
21AQI (US)
61AQI (US)
38AQI (US)
35AQI (US)
49AQI (US)
36AQI (US)
25AQI (US)
28AQI (US)
18AQI (US)
16AQI (US)
18AQI (US)
28AQI (US)
46AQI (US)
46AQI (US)
64AQI (US)
55AQI (US)
30AQI (US)
49AQI (US)
61AQI (US)
31AQI (US)
20AQI (US)
28AQI (US)
21AQI (US)
32AQI (US)
34AQI (US)
34AQI (US)
34AQI (US)
29AQI (US)
30AQI (US)
26AQI (US)
35AQI (US)
30AQI (US)
45AQI (US)
35AQI (US)
27AQI (US)
37AQI (US)
27AQI (US)
40AQI (US)
51AQI (US)
29AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
18AQI (US)
20AQI (US)
20AQI (US)
21AQI (US)
23AQI (US)
20AQI (US)
21AQI (US)
19AQI (US)
18AQI (US)
27AQI (US)
20AQI (US)
28AQI (US)
37AQI (US)
23AQI (US)
21AQI (US)
30AQI (US)
32AQI (US)
28AQI (US)
32AQI (US)
31AQI (US)
39AQI (US)
57AQI (US)
56AQI (US)
50AQI (US)
29AQI (US)
17AQI (US)
22AQI (US)
24AQI (US)
19AQI (US)
24AQI (US)
19AQI (US)
16AQI (US)
17AQI (US)
12AQI (US)
26AQI (US)
27AQI (US)
35AQI (US)
33AQI (US)
26AQI (US)
28AQI (US)
38AQI (US)
28AQI (US)
31AQI (US)
43AQI (US)
44AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
25AQI (US)
17AQI (US)
28AQI (US)
39AQI (US)
22AQI (US)
19AQI (US)
26AQI (US)
27AQI (US)
34AQI (US)
40AQI (US)
22AQI (US)
27AQI (US)
25AQI (US)
31AQI (US)
22AQI (US)
23AQI (US)
28AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
25AQI (US)
22AQI (US)
28AQI (US)
28AQI (US)
40AQI (US)
31AQI (US)
32AQI (US)
32AQI (US)
27AQI (US)
22AQI (US)
17AQI (US)
19AQI (US)
29AQI (US)
26AQI (US)
27AQI (US)
37AQI (US)
35AQI (US)
31AQI (US)
14AQI (US)
20AQI (US)
15AQI (US)
23AQI (US)
22AQI (US)
15AQI (US)
14AQI (US)
16AQI (US)
22AQI (US)
24AQI (US)
15AQI (US)
13AQI (US)
24AQI (US)
30AQI (US)
33AQI (US)
23AQI (US)
32AQI (US)
27AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
27AQI (US)
28AQI (US)
29AQI (US)
29AQI (US)
30AQI (US)
29AQI (US)
29AQI (US)
37AQI (US)
38AQI (US)
41AQI (US)
40AQI (US)
38AQI (US)
54AQI (US)
35AQI (US)
36AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March54AQI (US)
Lowest AQI (US) recorded in
September26AQI (US)
202534AQI (US)
Highest AQI (US) recorded in
October45AQI (US)
Lowest AQI (US) recorded in
September20AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Leuven's annual 2026 AQI (US) (34) shows an average percentage change of 0% (No Change AQI (US)) compared to previous years: 2025 (34).