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 (25th September):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 29 of Good air quality on the same day.
Day & Night AQI Trend: 25th Sep - 26th Sep 2026
Leuven, Flanders, Belgium
7 AM25th Sep 2026
8 PM
6 AM26th Sep 2026
57AQI
16AQI
48AQI
21AQI
In the last 24 hours,
Leuven's AQI reached its highest point of 57 at 10 AM during the Day, while the lowest point, 16, was recorded at 6 PM during the Day between 25th Sep and 26th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Leuven, Flanders, Belgium
18°C17/20°C
18°C15/21°C
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
29AQI
19AQI
25AQI
21AQI
2026 Days Vs Air Quality
Leuven, Flanders, Belgium
85%
226
13%
34
2%
5
Total number of days with different AQI categories in last 269 days in 2026 (96 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2026, 85% of 269 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)
40AQI (US)
38AQI (US)
54AQI (US)
35AQI (US)
36AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March54AQI (US)
Lowest AQI (US) recorded in
September24AQI (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).