Sint Niklaas, Flanders, Belgium Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Sint Niklaas, Flanders, Belgium
AQI Trends: Highest and Lowest
Same Day Analysis (31st October):
On this day, AQI across the 4 years varied significantly: 2026 ranks 1st highest AQI at 29 of Good air quality on the same day.
Day & Night AQI Trend: 30th Sep - 1st Oct 2026
Sint Niklaas, Flanders, Belgium
7 AM30th Sep 2026
7 PM
6 AM1st Oct 2026
26AQI
21AQI
25AQI
21AQI
In the last 24 hours,
Sint Niklaas's AQI reached its highest point of 26 at 2 PM during the Day, while the lowest point, 21, was recorded at 4 AM during the Night between 30th Sep and 1st Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Sint Niklaas, Flanders, Belgium
18°C14/23°C
19°C17/23°C
20°C18/25°C
17°C14/21°C
19°C13/25°C
23°C19/29°C
18°C14/22°C
14°C11/18°C
16°C12/20°C
17°C13/22°C
18°C14/24°C
18°C17/21°C
19°C16/23°C
20°C16/26°C
16°C13/19°C
15°C13/20°C
15°C10/20°C
18°C15/22°C
17°C14/19°C
15°C11/20°C
17°C14/21°C
17°C13/23°C
15°C13/19°C
18°C12/24°C
18°C14/22°C
18°C14/24°C
18°C15/20°C
21°C16/28°C
21°C19/25°C
18°C15/21°C
33AQI
27AQI
28AQI
24AQI
2026 Days Vs Air Quality
Sint Niklaas, Flanders, Belgium
91%
245
9%
23
0.7%
2
Total number of days with different AQI categories in last 274 days in 2026 (91 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 274 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Sint Niklaas, Flanders, Belgium
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
45AQI (US)
32AQI (US)
41AQI (US)
41AQI (US)
19AQI (US)
52AQI (US)
60AQI (US)
22AQI (US)
20AQI (US)
30AQI (US)
30AQI (US)
16AQI (US)
30AQI (US)
53AQI (US)
66AQI (US)
63AQI (US)
30AQI (US)
45AQI (US)
47AQI (US)
47AQI (US)
84AQI (US)
125AQI (US)
63AQI (US)
48AQI (US)
71AQI (US)
44AQI (US)
18AQI (US)
39AQI (US)
48AQI (US)
63AQI (US)
15AQI (US)
55AQI (US)
40AQI (US)
18AQI (US)
39AQI (US)
47AQI (US)
35AQI (US)
21AQI (US)
22AQI (US)
44AQI (US)
44AQI (US)
40AQI (US)
20AQI (US)
39AQI (US)
39AQI (US)
36AQI (US)
40AQI (US)
33AQI (US)
31AQI (US)
33AQI (US)
36AQI (US)
34AQI (US)
33AQI (US)
32AQI (US)
19AQI (US)
27AQI (US)
36AQI (US)
54AQI (US)
72AQI (US)
53AQI (US)
55AQI (US)
93AQI (US)
109AQI (US)
64AQI (US)
53AQI (US)
25AQI (US)
34AQI (US)
29AQI (US)
28AQI (US)
29AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
52AQI (US)
67AQI (US)
32AQI (US)
61AQI (US)
71AQI (US)
82AQI (US)
21AQI (US)
9AQI (US)
24AQI (US)
29AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
29AQI (US)
28AQI (US)
20AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
25AQI (US)
27AQI (US)
33AQI (US)
22AQI (US)
28AQI (US)
29AQI (US)
29AQI (US)
31AQI (US)
31AQI (US)
26AQI (US)
30AQI (US)
27AQI (US)
25AQI (US)
27AQI (US)
25AQI (US)
30AQI (US)
42AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
31AQI (US)
19AQI (US)
49AQI (US)
36AQI (US)
21AQI (US)
24AQI (US)
27AQI (US)
29AQI (US)
22AQI (US)
23AQI (US)
24AQI (US)
18AQI (US)
28AQI (US)
34AQI (US)
36AQI (US)
34AQI (US)
31AQI (US)
31AQI (US)
30AQI (US)
34AQI (US)
36AQI (US)
49AQI (US)
37AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
39AQI (US)
48AQI (US)
34AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
18AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
19AQI (US)
20AQI (US)
25AQI (US)
18AQI (US)
14AQI (US)
20AQI (US)
22AQI (US)
19AQI (US)
21AQI (US)
24AQI (US)
24AQI (US)
42AQI (US)
45AQI (US)
29AQI (US)
24AQI (US)
19AQI (US)
19AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
16AQI (US)
13AQI (US)
17AQI (US)
15AQI (US)
20AQI (US)
24AQI (US)
28AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
23AQI (US)
22AQI (US)
35AQI (US)
40AQI (US)
27AQI (US)
26AQI (US)
25AQI (US)
20AQI (US)
18AQI (US)
30AQI (US)
45AQI (US)
24AQI (US)
19AQI (US)
26AQI (US)
31AQI (US)
37AQI (US)
42AQI (US)
12AQI (US)
23AQI (US)
26AQI (US)
37AQI (US)
25AQI (US)
22AQI (US)
34AQI (US)
28AQI (US)
34AQI (US)
29AQI (US)
28AQI (US)
29AQI (US)
32AQI (US)
35AQI (US)
39AQI (US)
13AQI (US)
26AQI (US)
26AQI (US)
31AQI (US)
25AQI (US)
16AQI (US)
14AQI (US)
28AQI (US)
30AQI (US)
25AQI (US)
32AQI (US)
38AQI (US)
39AQI (US)
14AQI (US)
22AQI (US)
18AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
11AQI (US)
19AQI (US)
27AQI (US)
27AQI (US)
17AQI (US)
19AQI (US)
29AQI (US)
27AQI (US)
32AQI (US)
24AQI (US)
38AQI (US)
29AQI (US)
20AQI (US)
26AQI (US)
28AQI (US)
31AQI (US)
26AQI (US)
30AQI (US)
32AQI (US)
36AQI (US)
28AQI (US)
28AQI (US)
35AQI (US)
38AQI (US)
40AQI (US)
52AQI (US)
25AQI (US)
43AQI (US)
36AQI (US)
44AQI (US)
28AQI (US)
31AQI (US)
23AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
March44AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202541AQI (US)
Highest AQI (US) recorded in
February70AQI (US)
Lowest AQI (US) recorded in
September22AQI (US)
202438AQI (US)
Highest AQI (US) recorded in
January46AQI (US)
Lowest AQI (US) recorded in
April23AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
May47AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202244AQI (US)
Highest AQI (US) recorded in
March73AQI (US)
Lowest AQI (US) recorded in
November25AQI (US)
202150AQI (US)
Highest AQI (US) recorded in
March65AQI (US)
Lowest AQI (US) recorded in
August37AQI (US)
202044AQI (US)
Highest AQI (US) recorded in
November60AQI (US)
Lowest AQI (US) recorded in
July28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Sint Niklaas's annual 2026 AQI (US) (32) shows an average percentage change of -23.6% (improved AQI (US)) compared to previous years: 2020 (44), 2021 (50), 2022 (44), 2023 (37), 2024 (38), 2025 (41).