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 (27th September):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 38 of Good air quality on the same day.
Day & Night AQI Trend: 26th Sep - 27th Sep 2026
Leuven, Flanders, Belgium
7 AM26th Sep 2026
8 PM
6 AM27th Sep 2026
58AQI
21AQI
33AQI
25AQI
In the last 24 hours,
Leuven's AQI reached its highest point of 58 at 12 PM during the Day, while the lowest point, 21, was recorded at 7 AM during the Day between 26th Sep and 27th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Leuven, Flanders, Belgium
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
18°C13/25°C
29AQI
19AQI
26AQI
21AQI
2026 Days Vs Air Quality
Leuven, Flanders, Belgium
85%
228
13%
34
2%
5
Total number of days with different AQI categories in last 270 days in 2026 (95 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2026, 85% of 270 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)
40AQI (US)
38AQI (US)
54AQI (US)
35AQI (US)
36AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
25AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March54AQI (US)
Lowest AQI (US) recorded in
September25AQI (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).