Diest, 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
Diest, Flanders, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (24th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 24 of Good air quality, showing improvement over 2024 and 2022 on the same day.
Day & Night AQI Trend: 24th Sep - 25th Sep 2026
Diest, Flanders, Belgium
7 AM24th Sep 2026
8 PM
6 AM25th Sep 2026
42AQI
14AQI
29AQI
21AQI
In the last 24 hours,
Diest's AQI reached its highest point of 42 at 7 AM during the Day, while the lowest point, 14, was recorded at 2 PM during the Day between 24th Sep and 25th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Diest, Flanders, Belgium
23°C17/31°C
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
27AQI
20AQI
23AQI
19AQI
2026 Days Vs Air Quality
Diest, Flanders, Belgium
84%
223
14%
36
2%
5
Total number of days with different AQI categories in last 268 days in 2026 (97 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% of 268 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
Diest, Flanders, Belgium
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
18AQI (US)
24AQI (US)
23AQI (US)
41AQI (US)
39AQI (US)
36AQI (US)
44AQI (US)
12AQI (US)
52AQI (US)
64AQI (US)
19AQI (US)
14AQI (US)
26AQI (US)
21AQI (US)
12AQI (US)
27AQI (US)
52AQI (US)
57AQI (US)
57AQI (US)
30AQI (US)
46AQI (US)
49AQI (US)
41AQI (US)
76AQI (US)
119AQI (US)
60AQI (US)
39AQI (US)
65AQI (US)
37AQI (US)
17AQI (US)
31AQI (US)
31AQI (US)
47AQI (US)
13AQI (US)
46AQI (US)
39AQI (US)
24AQI (US)
54AQI (US)
68AQI (US)
51AQI (US)
28AQI (US)
34AQI (US)
53AQI (US)
61AQI (US)
50AQI (US)
20AQI (US)
28AQI (US)
42AQI (US)
36AQI (US)
66AQI (US)
31AQI (US)
12AQI (US)
32AQI (US)
46AQI (US)
22AQI (US)
57AQI (US)
47AQI (US)
14AQI (US)
30AQI (US)
39AQI (US)
56AQI (US)
92AQI (US)
69AQI (US)
66AQI (US)
127AQI (US)
124AQI (US)
96AQI (US)
57AQI (US)
43AQI (US)
23AQI (US)
28AQI (US)
39AQI (US)
44AQI (US)
24AQI (US)
27AQI (US)
38AQI (US)
79AQI (US)
98AQI (US)
54AQI (US)
72AQI (US)
105AQI (US)
109AQI (US)
25AQI (US)
10AQI (US)
34AQI (US)
37AQI (US)
26AQI (US)
23AQI (US)
30AQI (US)
41AQI (US)
55AQI (US)
37AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
31AQI (US)
27AQI (US)
40AQI (US)
22AQI (US)
35AQI (US)
29AQI (US)
42AQI (US)
72AQI (US)
48AQI (US)
31AQI (US)
53AQI (US)
26AQI (US)
21AQI (US)
61AQI (US)
39AQI (US)
35AQI (US)
48AQI (US)
38AQI (US)
25AQI (US)
28AQI (US)
19AQI (US)
17AQI (US)
21AQI (US)
28AQI (US)
46AQI (US)
47AQI (US)
65AQI (US)
56AQI (US)
30AQI (US)
50AQI (US)
61AQI (US)
30AQI (US)
21AQI (US)
28AQI (US)
22AQI (US)
33AQI (US)
34AQI (US)
34AQI (US)
34AQI (US)
29AQI (US)
31AQI (US)
26AQI (US)
35AQI (US)
30AQI (US)
44AQI (US)
35AQI (US)
26AQI (US)
38AQI (US)
27AQI (US)
42AQI (US)
53AQI (US)
32AQI (US)
22AQI (US)
21AQI (US)
24AQI (US)
18AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
24AQI (US)
20AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
28AQI (US)
20AQI (US)
32AQI (US)
38AQI (US)
30AQI (US)
25AQI (US)
31AQI (US)
33AQI (US)
30AQI (US)
32AQI (US)
33AQI (US)
41AQI (US)
57AQI (US)
57AQI (US)
51AQI (US)
29AQI (US)
18AQI (US)
24AQI (US)
25AQI (US)
22AQI (US)
25AQI (US)
20AQI (US)
16AQI (US)
15AQI (US)
12AQI (US)
27AQI (US)
27AQI (US)
36AQI (US)
33AQI (US)
29AQI (US)
28AQI (US)
40AQI (US)
28AQI (US)
33AQI (US)
45AQI (US)
44AQI (US)
25AQI (US)
26AQI (US)
27AQI (US)
19AQI (US)
21AQI (US)
23AQI (US)
29AQI (US)
23AQI (US)
20AQI (US)
24AQI (US)
25AQI (US)
30AQI (US)
37AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
26AQI (US)
21AQI (US)
23AQI (US)
30AQI (US)
29AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
40AQI (US)
31AQI (US)
33AQI (US)
28AQI (US)
23AQI (US)
24AQI (US)
17AQI (US)
17AQI (US)
27AQI (US)
23AQI (US)
22AQI (US)
26AQI (US)
28AQI (US)
26AQI (US)
12AQI (US)
17AQI (US)
20AQI (US)
27AQI (US)
25AQI (US)
16AQI (US)
13AQI (US)
17AQI (US)
20AQI (US)
24AQI (US)
11AQI (US)
12AQI (US)
22AQI (US)
31AQI (US)
30AQI (US)
23AQI (US)
28AQI (US)
27AQI (US)
23AQI (US)
19AQI (US)
23AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
40AQI (US)
39AQI (US)
56AQI (US)
36AQI (US)
36AQI (US)
29AQI (US)
27AQI (US)
25AQI (US)
23AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
March56AQI (US)
Lowest AQI (US) recorded in
September23AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
February62AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202437AQI (US)
Highest AQI (US) recorded in
January46AQI (US)
Lowest AQI (US) recorded in
April23AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
June48AQI (US)
Lowest AQI (US) recorded in
November27AQI (US)
202240AQI (US)
Highest AQI (US) recorded in
March68AQI (US)
Lowest AQI (US) recorded in
November22AQI (US)
202146AQI (US)
Highest AQI (US) recorded in
March57AQI (US)
Lowest AQI (US) recorded in
August32AQI (US)
202041AQI (US)
Highest AQI (US) recorded in
March59AQI (US)
Lowest AQI (US) recorded in
July28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Diest's annual 2026 AQI (US) (35) shows an average percentage change of -11.6% (improved AQI (US)) compared to previous years: 2020 (41), 2021 (46), 2022 (40), 2023 (37), 2024 (37), 2025 (38).