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!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
November Air Quality Analysis
Sint Niklaas, Flanders, Belgium
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
24th Nov 2021
100AQILowest AQI recorded on
5th Nov 2021
12AQISame Day Analysis (4th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 29 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 4th Nov - 5th Nov 2025
Sint Niklaas, Flanders, Belgium
AQI
Day
Night
.
8 AM4th Nov 2025
6 PM
7 AM5th Nov 2025
Day time
Avg. Highest Time
11AM4th Nov
33AQI
Avg. Lowest Time
7AM5th Nov
17AQI
Night time
Avg. Highest Time
6PM4th Nov
20AQI
Avg. Lowest Time
6AM5th Nov
17AQI
In the last 24 hours,
Sint Niklaas's AQI reached its highest point of 33 at 11 AM during the Day, while the lowest point, 17, was recorded at 7 AM during the Day between 4th Nov and 5th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Sint Niklaas, Flanders, Belgium
OctNov
06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th
Day
Night
6th Oct 2025398 AMAQI
6th Oct 2025429 AMAQI
6th Oct 20254710 AMAQI
6th Oct 20254811 AMAQI
6th Oct 20254912 PMAQI
6th Oct 2025511 PMAQI
6th Oct 2025532 PMAQI
6th Oct 2025563 PMAQI
6th Oct 2025564 PMAQI
6th Oct 2025565 PMAQI
6th Oct 2025566 PMAQI
6th Oct 2025557 PMAQI
13°C10/16°C
7th Oct 2025471 PMAQI
7th Oct 2025602 PMAQI
7th Oct 2025653 PMAQI
7th Oct 2025654 PMAQI
7th Oct 2025625 PMAQI
7th Oct 2025586 PMAQI
7th Oct 2025597 PMAQI
7th Oct 2025598 PMAQI
7th Oct 2025579 PMAQI
7th Oct 20255610 PMAQI
7th Oct 20255611 PMAQI
8th Oct 20255612 AMAQI
8th Oct 2025571 AMAQI
8th Oct 2025582 AMAQI
8th Oct 2025573 AMAQI
8th Oct 2025564 AMAQI
8th Oct 2025565 AMAQI
8th Oct 2025576 AMAQI
8th Oct 2025587 AMAQI
15°C11/20°C
8th Oct 2025598 AMAQI
8th Oct 2025559 AMAQI
8th Oct 20256010 AMAQI
8th Oct 20256111 AMAQI
8th Oct 20256412 PMAQI
8th Oct 2025651 PMAQI
8th Oct 2025702 PMAQI
8th Oct 2025743 PMAQI
8th Oct 2025704 PMAQI
8th Oct 2025645 PMAQI
8th Oct 2025646 PMAQI
8th Oct 2025607 PMAQI
8th Oct 2025558 PMAQI
8th Oct 2025519 PMAQI
8th Oct 20255010 PMAQI
8th Oct 20255511 PMAQI
9th Oct 20256212 AMAQI
9th Oct 2025591 AMAQI
9th Oct 2025552 AMAQI
9th Oct 2025513 AMAQI
9th Oct 2025474 AMAQI
9th Oct 2025505 AMAQI
9th Oct 2025486 AMAQI
9th Oct 2025417 AMAQI
14°C11/17°C
9th Oct 2025458 AMAQI
9th Oct 2025449 AMAQI
9th Oct 20254710 AMAQI
9th Oct 20254511 AMAQI
9th Oct 20254612 PMAQI
9th Oct 2025491 PMAQI
9th Oct 2025572 PMAQI
9th Oct 2025573 PMAQI
9th Oct 2025504 PMAQI
9th Oct 2025455 PMAQI
9th Oct 2025456 PMAQI
9th Oct 2025467 PMAQI
9th Oct 2025448 PMAQI
9th Oct 2025399 PMAQI
9th Oct 20253910 PMAQI
9th Oct 20253911 PMAQI
10th Oct 20254012 AMAQI
10th Oct 2025451 AMAQI
10th Oct 2025482 AMAQI
10th Oct 2025493 AMAQI
10th Oct 2025504 AMAQI
10th Oct 2025555 AMAQI
10th Oct 2025586 AMAQI
10th Oct 2025557 AMAQI
13°C10/17°C
10th Oct 2025578 AMAQI
10th Oct 2025589 AMAQI
10th Oct 20255910 AMAQI
10th Oct 20255911 AMAQI
10th Oct 20256612 PMAQI
10th Oct 2025661 PMAQI
10th Oct 2025672 PMAQI
10th Oct 2025683 PMAQI
10th Oct 2025614 PMAQI
10th Oct 2025575 PMAQI
10th Oct 2025566 PMAQI
10th Oct 2025577 PMAQI
10th Oct 2025628 PMAQI
10th Oct 2025609 PMAQI
10th Oct 20256110 PMAQI
10th Oct 20255911 PMAQI
11th Oct 20256112 AMAQI
11th Oct 2025601 AMAQI
11th Oct 2025642 AMAQI
11th Oct 2025663 AMAQI
11th Oct 2025704 AMAQI
11th Oct 2025755 AMAQI
11th Oct 2025746 AMAQI
11th Oct 2025807 AMAQI
15°C12/19°C
11th Oct 2025838 AMAQI
11th Oct 2025769 AMAQI
11th Oct 20257910 AMAQI
11th Oct 20258611 AMAQI
11th Oct 20258812 PMAQI
11th Oct 2025861 PMAQI
11th Oct 2025892 PMAQI
11th Oct 2025863 PMAQI
11th Oct 2025904 PMAQI
11th Oct 2025945 PMAQI
11th Oct 2025946 PMAQI
11th Oct 2025957 PMAQI
11th Oct 2025948 PMAQI
11th Oct 2025969 PMAQI
11th Oct 20259110 PMAQI
11th Oct 20258511 PMAQI
12th Oct 20258012 AMAQI
12th Oct 2025751 AMAQI
12th Oct 2025722 AMAQI
12th Oct 2025703 AMAQI
12th Oct 2025624 AMAQI
12th Oct 2025665 AMAQI
12th Oct 2025646 AMAQI
12th Oct 2025607 AMAQI
14°C11/17°C
12th Oct 2025638 AMAQI
12th Oct 2025659 AMAQI
12th Oct 20257010 AMAQI
12th Oct 20256811 AMAQI
12th Oct 20256512 PMAQI
12th Oct 2025631 PMAQI
12th Oct 2025592 PMAQI
12th Oct 2025553 PMAQI
12th Oct 2025544 PMAQI
12th Oct 2025535 PMAQI
12th Oct 2025506 PMAQI
12th Oct 2025497 PMAQI
12th Oct 2025448 PMAQI
12th Oct 2025419 PMAQI
12th Oct 20253710 PMAQI
12th Oct 20254011 PMAQI
13th Oct 20253812 AMAQI
13th Oct 2025391 AMAQI
13th Oct 2025352 AMAQI
13th Oct 2025343 AMAQI
13th Oct 2025384 AMAQI
13th Oct 2025385 AMAQI
13th Oct 2025406 AMAQI
13th Oct 2025367 AMAQI
14°C10/18°C
13th Oct 2025398 AMAQI
13th Oct 2025379 AMAQI
13th Oct 20254010 AMAQI
13th Oct 20253911 AMAQI
13th Oct 20254112 PMAQI
13th Oct 2025381 PMAQI
13th Oct 2025402 PMAQI
13th Oct 2025523 PMAQI
13th Oct 2025514 PMAQI
13th Oct 2025495 PMAQI
13th Oct 2025476 PMAQI
13th Oct 2025477 PMAQI
13th Oct 2025488 PMAQI
13th Oct 2025519 PMAQI
13th Oct 20255810 PMAQI
13th Oct 20256811 PMAQI
14th Oct 20256612 AMAQI
14th Oct 2025501 AMAQI
14th Oct 2025562 AMAQI
14th Oct 2025563 AMAQI
14th Oct 2025514 AMAQI
14th Oct 2025425 AMAQI
14th Oct 2025516 AMAQI
14th Oct 2025537 AMAQI
14°C13/17°C
14th Oct 2025528 AMAQI
14th Oct 2025479 AMAQI
14th Oct 20254810 AMAQI
14th Oct 20255511 AMAQI
14th Oct 20255112 PMAQI
14th Oct 2025391 PMAQI
14th Oct 2025472 PMAQI
14th Oct 2025573 PMAQI
14th Oct 2025424 PMAQI
14th Oct 2025475 PMAQI
14th Oct 2025416 PMAQI
14th Oct 2025407 PMAQI
14th Oct 2025448 PMAQI
14th Oct 2025649 PMAQI
14th Oct 20256810 PMAQI
14th Oct 20256411 PMAQI
15th Oct 20255112 AMAQI
15th Oct 2025561 AMAQI
15th Oct 2025602 AMAQI
15th Oct 2025593 AMAQI
15th Oct 2025564 AMAQI
15th Oct 2025555 AMAQI
15th Oct 2025426 AMAQI
15th Oct 2025637 AMAQI
13°C10/15°C
15th Oct 2025628 AMAQI
15th Oct 2025589 AMAQI
15th Oct 20255410 AMAQI
15th Oct 20255111 AMAQI
15th Oct 20254312 PMAQI
15th Oct 2025461 PMAQI
15th Oct 2025472 PMAQI
15th Oct 2025523 PMAQI
15th Oct 2025574 PMAQI
15th Oct 2025415 PMAQI
15th Oct 2025416 PMAQI
15th Oct 2025407 PMAQI
15th Oct 2025408 PMAQI
15th Oct 2025389 PMAQI
15th Oct 20254410 PMAQI
15th Oct 20255111 PMAQI
16th Oct 20255212 AMAQI
16th Oct 2025521 AMAQI
16th Oct 2025482 AMAQI
16th Oct 2025463 AMAQI
16th Oct 2025524 AMAQI
16th Oct 2025465 AMAQI
16th Oct 2025426 AMAQI
16th Oct 2025497 AMAQI
14°C12/16°C
16th Oct 2025568 AMAQI
16th Oct 2025619 AMAQI
16th Oct 20256010 AMAQI
16th Oct 20255711 AMAQI
16th Oct 20254712 PMAQI
16th Oct 2025471 PMAQI
16th Oct 2025502 PMAQI
16th Oct 2025503 PMAQI
16th Oct 2025524 PMAQI
16th Oct 2025495 PMAQI
16th Oct 2025426 PMAQI
16th Oct 2025457 PMAQI
16th Oct 2025578 PMAQI
16th Oct 2025589 PMAQI
16th Oct 20255910 PMAQI
16th Oct 20255711 PMAQI
17th Oct 20255812 AMAQI
17th Oct 2025561 AMAQI
17th Oct 2025532 AMAQI
17th Oct 2025503 AMAQI
17th Oct 2025454 AMAQI
17th Oct 2025515 AMAQI
17th Oct 2025496 AMAQI
17th Oct 2025517 AMAQI
14°C12/16°C
17th Oct 2025498 AMAQI
17th Oct 2025449 AMAQI
17th Oct 20254510 AMAQI
17th Oct 20254811 AMAQI
17th Oct 20255612 PMAQI
17th Oct 2025551 PMAQI
17th Oct 2025542 PMAQI
17th Oct 2025543 PMAQI
17th Oct 2025514 PMAQI
17th Oct 2025515 PMAQI
17th Oct 2025566 PMAQI
17th Oct 2025557 PMAQI
17th Oct 2025598 PMAQI
17th Oct 2025569 PMAQI
17th Oct 20255010 PMAQI
17th Oct 20254811 PMAQI
18th Oct 20255312 AMAQI
18th Oct 2025611 AMAQI
18th Oct 2025592 AMAQI
18th Oct 2025593 AMAQI
18th Oct 2025584 AMAQI
18th Oct 2025585 AMAQI
18th Oct 2025576 AMAQI
18th Oct 2025597 AMAQI
12°C10/14°C
18th Oct 2025608 AMAQI
18th Oct 2025619 AMAQI
18th Oct 20255610 AMAQI
18th Oct 20255211 AMAQI
18th Oct 20255212 PMAQI
18th Oct 2025481 PMAQI
18th Oct 2025382 PMAQI
18th Oct 2025483 PMAQI
18th Oct 2025544 PMAQI
18th Oct 2025515 PMAQI
18th Oct 2025496 PMAQI
18th Oct 2025427 PMAQI
18th Oct 2025448 PMAQI
18th Oct 2025479 PMAQI
18th Oct 20255510 PMAQI
18th Oct 20255611 PMAQI
19th Oct 20255512 AMAQI
19th Oct 2025411 AMAQI
19th Oct 2025432 AMAQI
19th Oct 2025483 AMAQI
19th Oct 2025484 AMAQI
19th Oct 2025425 AMAQI
19th Oct 2025406 AMAQI
19th Oct 2025467 AMAQI
12°C11/15°C
19th Oct 2025468 AMAQI
19th Oct 2025459 AMAQI
19th Oct 20254910 AMAQI
19th Oct 20254811 AMAQI
19th Oct 20254712 PMAQI
19th Oct 2025511 PMAQI
19th Oct 2025492 PMAQI
19th Oct 2025483 PMAQI
19th Oct 2025474 PMAQI
19th Oct 2025535 PMAQI
19th Oct 2025576 PMAQI
19th Oct 2025557 PMAQI
19th Oct 2025558 PMAQI
19th Oct 2025559 PMAQI
19th Oct 20255410 PMAQI
19th Oct 20255511 PMAQI
20th Oct 20255512 AMAQI
20th Oct 2025561 AMAQI
20th Oct 2025552 AMAQI
20th Oct 2025553 AMAQI
20th Oct 2025314 AMAQI
20th Oct 2025165 AMAQI
20th Oct 2025156 AMAQI
20th Oct 2025157 AMAQI
13°C8/19°C
20th Oct 2025168 AMAQI
20th Oct 2025299 AMAQI
20th Oct 20255810 AMAQI
20th Oct 20255811 AMAQI
20th Oct 20255912 PMAQI
20th Oct 2025601 PMAQI
20th Oct 2025592 PMAQI
20th Oct 2025543 PMAQI
20th Oct 2025594 PMAQI
20th Oct 2025585 PMAQI
20th Oct 2025596 PMAQI
20th Oct 2025187 PMAQI
20th Oct 2025198 PMAQI
20th Oct 2025209 PMAQI
20th Oct 20251910 PMAQI
20th Oct 20251911 PMAQI
21st Oct 20253512 AMAQI
21st Oct 2025261 AMAQI
21st Oct 2025292 AMAQI
21st Oct 2025273 AMAQI
21st Oct 2025284 AMAQI
21st Oct 2025295 AMAQI
21st Oct 2025366 AMAQI
21st Oct 2025187 AMAQI
15°C13/18°C
21st Oct 2025158 AMAQI
21st Oct 2025159 AMAQI
21st Oct 20251510 AMAQI
21st Oct 20251511 AMAQI
21st Oct 20252812 PMAQI
21st Oct 2025321 PMAQI
21st Oct 2025162 PMAQI
21st Oct 2025123 PMAQI
21st Oct 2025164 PMAQI
21st Oct 2025165 PMAQI
21st Oct 2025216 PMAQI
21st Oct 2025247 PMAQI
21st Oct 2025288 PMAQI
21st Oct 2025209 PMAQI
21st Oct 20252010 PMAQI
21st Oct 20251711 PMAQI
22nd Oct 20251912 AMAQI
22nd Oct 2025201 AMAQI
22nd Oct 2025182 AMAQI
22nd Oct 2025183 AMAQI
22nd Oct 2025184 AMAQI
22nd Oct 2025165 AMAQI
22nd Oct 2025196 AMAQI
22nd Oct 2025227 AMAQI
14°C12/16°C
22nd Oct 2025268 AMAQI
22nd Oct 2025289 AMAQI
22nd Oct 20253210 AMAQI
22nd Oct 20253511 AMAQI
22nd Oct 20254912 PMAQI
22nd Oct 2025661 PMAQI
22nd Oct 2025442 PMAQI
22nd Oct 2025303 PMAQI
22nd Oct 2025324 PMAQI
22nd Oct 2025315 PMAQI
22nd Oct 2025256 PMAQI
22nd Oct 2025267 PMAQI
22nd Oct 2025288 PMAQI
22nd Oct 2025399 PMAQI
22nd Oct 20254310 PMAQI
22nd Oct 20254511 PMAQI
23rd Oct 20254212 AMAQI
23rd Oct 2025411 AMAQI
23rd Oct 2025352 AMAQI
23rd Oct 2025283 AMAQI
23rd Oct 2025224 AMAQI
23rd Oct 2025205 AMAQI
23rd Oct 2025166 AMAQI
23rd Oct 2025117 AMAQI
13°C9/16°C
23rd Oct 2025128 AMAQI
23rd Oct 2025169 AMAQI
23rd Oct 20251710 AMAQI
23rd Oct 20251711 AMAQI
23rd Oct 20251712 PMAQI
23rd Oct 2025171 PMAQI
23rd Oct 2025172 PMAQI
23rd Oct 2025173 PMAQI
23rd Oct 2025174 PMAQI
23rd Oct 2025115 PMAQI
23rd Oct 2025286 PMAQI
23rd Oct 2025327 PMAQI
23rd Oct 2025318 PMAQI
23rd Oct 2025319 PMAQI
23rd Oct 20252310 PMAQI
23rd Oct 20252211 PMAQI
24th Oct 20252212 AMAQI
24th Oct 2025221 AMAQI
24th Oct 2025252 AMAQI
24th Oct 2025283 AMAQI
24th Oct 2025234 AMAQI
24th Oct 2025245 AMAQI
24th Oct 2025286 AMAQI
24th Oct 2025287 AMAQI
12°C10/15°C
24th Oct 2025288 AMAQI
24th Oct 2025289 AMAQI
24th Oct 20252610 AMAQI
24th Oct 20252011 AMAQI
24th Oct 20251812 PMAQI
24th Oct 2025221 PMAQI
24th Oct 2025222 PMAQI
24th Oct 2025223 PMAQI
24th Oct 2025224 PMAQI
24th Oct 2025225 PMAQI
24th Oct 2025206 PMAQI
24th Oct 2025177 PMAQI
24th Oct 2025178 PMAQI
24th Oct 2025129 PMAQI
24th Oct 20251410 PMAQI
24th Oct 20251711 PMAQI
25th Oct 20251512 AMAQI
25th Oct 2025111 AMAQI
25th Oct 2025112 AMAQI
25th Oct 2025113 AMAQI
25th Oct 2025114 AMAQI
25th Oct 2025165 AMAQI
25th Oct 2025176 AMAQI
25th Oct 2025177 AMAQI
10°C8/12°C
25th Oct 2025178 AMAQI
25th Oct 2025179 AMAQI
25th Oct 20251710 AMAQI
25th Oct 20251711 AMAQI
25th Oct 20252512 PMAQI
25th Oct 2025271 PMAQI
25th Oct 2025192 PMAQI
25th Oct 2025173 PMAQI
25th Oct 2025214 PMAQI
25th Oct 2025225 PMAQI
25th Oct 2025226 PMAQI
25th Oct 2025207 PMAQI
25th Oct 2025178 PMAQI
25th Oct 2025179 PMAQI
25th Oct 20251710 PMAQI
25th Oct 20251711 PMAQI
26th Oct 20251712 AMAQI
26th Oct 2025221 AMAQI
26th Oct 2025172 AMAQI
26th Oct 2025113 AMAQI
26th Oct 2025114 AMAQI
26th Oct 2025115 AMAQI
26th Oct 2025176 AMAQI
26th Oct 2025177 AMAQI
9°C7/11°C
26th Oct 2025178 AMAQI
26th Oct 2025189 AMAQI
26th Oct 20252810 AMAQI
26th Oct 20252711 AMAQI
26th Oct 20251812 PMAQI
26th Oct 2025221 PMAQI
26th Oct 2025222 PMAQI
26th Oct 2025223 PMAQI
26th Oct 2025184 PMAQI
26th Oct 2025175 PMAQI
26th Oct 2025176 PMAQI
26th Oct 2025177 PMAQI
26th Oct 2025178 PMAQI
26th Oct 2025179 PMAQI
26th Oct 20251710 PMAQI
26th Oct 20251811 PMAQI
27th Oct 20252212 AMAQI
27th Oct 2025171 AMAQI
27th Oct 2025172 AMAQI
27th Oct 2025173 AMAQI
27th Oct 2025164 AMAQI
27th Oct 2025115 AMAQI
27th Oct 2025286 AMAQI
27th Oct 2025277 AMAQI
8°C6/11°C
27th Oct 2025228 AMAQI
27th Oct 2025339 AMAQI
27th Oct 20253310 AMAQI
27th Oct 20253311 AMAQI
27th Oct 20253312 PMAQI
27th Oct 2025411 PMAQI
27th Oct 2025372 PMAQI
27th Oct 2025373 PMAQI
27th Oct 2025304 PMAQI
27th Oct 2025305 PMAQI
27th Oct 2025326 PMAQI
27th Oct 2025177 PMAQI
27th Oct 2025178 PMAQI
27th Oct 2025189 PMAQI
27th Oct 20252310 PMAQI
27th Oct 20252811 PMAQI
28th Oct 20253212 AMAQI
28th Oct 2025281 AMAQI
28th Oct 2025322 AMAQI
28th Oct 2025333 AMAQI
28th Oct 2025354 AMAQI
28th Oct 2025425 AMAQI
28th Oct 2025336 AMAQI
28th Oct 2025327 AMAQI
10°C8/12°C
28th Oct 2025308 AMAQI
28th Oct 2025289 AMAQI
28th Oct 20252210 AMAQI
28th Oct 20251711 AMAQI
28th Oct 20251712 PMAQI
28th Oct 2025171 PMAQI
28th Oct 2025172 PMAQI
28th Oct 2025173 PMAQI
28th Oct 2025224 PMAQI
28th Oct 2025225 PMAQI
28th Oct 2025226 PMAQI
28th Oct 2025227 PMAQI
28th Oct 2025228 PMAQI
28th Oct 2025289 PMAQI
28th Oct 20252810 PMAQI
28th Oct 20252811 PMAQI
29th Oct 20253412 AMAQI
29th Oct 2025441 AMAQI
29th Oct 2025462 AMAQI
29th Oct 2025463 AMAQI
29th Oct 2025404 AMAQI
29th Oct 2025325 AMAQI
29th Oct 2025226 AMAQI
29th Oct 2025227 AMAQI
11°C7/15°C
29th Oct 2025228 AMAQI
29th Oct 2025179 AMAQI
29th Oct 20252310 AMAQI
29th Oct 20253311 AMAQI
29th Oct 20253312 PMAQI
29th Oct 2025421 PMAQI
29th Oct 2025422 PMAQI
29th Oct 2025323 PMAQI
29th Oct 2025324 PMAQI
29th Oct 2025285 PMAQI
29th Oct 2025196 PMAQI
29th Oct 2025177 PMAQI
29th Oct 2025178 PMAQI
29th Oct 2025249 PMAQI
29th Oct 20253810 PMAQI
29th Oct 20253811 PMAQI
30th Oct 20253712 AMAQI
30th Oct 2025371 AMAQI
30th Oct 2025352 AMAQI
30th Oct 2025283 AMAQI
30th Oct 2025284 AMAQI
30th Oct 2025175 AMAQI
30th Oct 2025176 AMAQI
30th Oct 2025177 AMAQI
11°C9/14°C
30th Oct 2025258 AMAQI
30th Oct 2025329 AMAQI
30th Oct 20253210 AMAQI
30th Oct 20253311 AMAQI
30th Oct 20253312 PMAQI
30th Oct 2025341 PMAQI
30th Oct 2025362 PMAQI
30th Oct 2025323 PMAQI
30th Oct 2025324 PMAQI
30th Oct 2025285 PMAQI
30th Oct 2025306 PMAQI
30th Oct 2025327 PMAQI
30th Oct 2025328 PMAQI
30th Oct 2025329 PMAQI
30th Oct 20253310 PMAQI
30th Oct 20253811 PMAQI
31st Oct 20253912 AMAQI
31st Oct 2025421 AMAQI
31st Oct 2025422 AMAQI
31st Oct 2025383 AMAQI
31st Oct 2025364 AMAQI
31st Oct 2025375 AMAQI
31st Oct 2025326 AMAQI
31st Oct 2025327 AMAQI
10°C6/14°C
31st Oct 2025288 AMAQI
31st Oct 2025279 AMAQI
31st Oct 20251710 AMAQI
31st Oct 20251711 AMAQI
31st Oct 20251812 PMAQI
31st Oct 2025221 PMAQI
31st Oct 2025222 PMAQI
31st Oct 2025223 PMAQI
31st Oct 2025224 PMAQI
31st Oct 2025175 PMAQI
31st Oct 2025176 PMAQI
31st Oct 2025177 PMAQI
31st Oct 2025228 PMAQI
31st Oct 2025289 PMAQI
31st Oct 20252810 PMAQI
31st Oct 20252611 PMAQI
1st Nov 20252212 AMAQI
1st Nov 2025221 AMAQI
1st Nov 2025222 AMAQI
1st Nov 2025223 AMAQI
1st Nov 2025224 AMAQI
1st Nov 2025175 AMAQI
1st Nov 2025176 AMAQI
1st Nov 2025177 AMAQI
13°C11/14°C
1st Nov 2025178 AMAQI
1st Nov 2025179 AMAQI
1st Nov 20251710 AMAQI
1st Nov 20251711 AMAQI
1st Nov 20251712 PMAQI
1st Nov 2025171 PMAQI
1st Nov 2025172 PMAQI
1st Nov 2025163 PMAQI
1st Nov 2025114 PMAQI
1st Nov 2025115 PMAQI
1st Nov 2025116 PMAQI
1st Nov 2025167 PMAQI
1st Nov 2025178 PMAQI
1st Nov 2025179 PMAQI
1st Nov 20251710 PMAQI
1st Nov 20251711 PMAQI
2nd Nov 20251712 AMAQI
2nd Nov 2025171 AMAQI
2nd Nov 2025222 AMAQI
2nd Nov 2025223 AMAQI
2nd Nov 2025224 AMAQI
2nd Nov 2025235 AMAQI
2nd Nov 2025276 AMAQI
2nd Nov 2025227 AMAQI
13°C11/15°C
2nd Nov 2025228 AMAQI
2nd Nov 2025229 AMAQI
2nd Nov 20251710 AMAQI
2nd Nov 20252211 AMAQI
2nd Nov 20252212 PMAQI
2nd Nov 2025221 PMAQI
2nd Nov 2025222 PMAQI
2nd Nov 2025223 PMAQI
2nd Nov 2025224 PMAQI
2nd Nov 2025225 PMAQI
2nd Nov 2025226 PMAQI
2nd Nov 2025217 PMAQI
2nd Nov 2025118 PMAQI
2nd Nov 2025129 PMAQI
2nd Nov 20251710 PMAQI
2nd Nov 20253011 PMAQI
3rd Nov 20253212 AMAQI
3rd Nov 2025331 AMAQI
3rd Nov 2025362 AMAQI
3rd Nov 2025393 AMAQI
3rd Nov 2025374 AMAQI
3rd Nov 2025325 AMAQI
3rd Nov 2025326 AMAQI
3rd Nov 2025317 AMAQI
10°C7/13°C
3rd Nov 2025228 AMAQI
3rd Nov 2025279 AMAQI
3rd Nov 20252510 AMAQI
3rd Nov 20252811 AMAQI
3rd Nov 20252812 PMAQI
3rd Nov 2025281 PMAQI
3rd Nov 2025332 PMAQI
3rd Nov 2025333 PMAQI
3rd Nov 2025334 PMAQI
3rd Nov 2025395 PMAQI
3rd Nov 2025426 PMAQI
3rd Nov 2025447 PMAQI
3rd Nov 2025458 PMAQI
3rd Nov 2025429 PMAQI
3rd Nov 20253510 PMAQI
3rd Nov 20253411 PMAQI
4th Nov 20253312 AMAQI
4th Nov 2025321 AMAQI
4th Nov 2025292 AMAQI
4th Nov 2025283 AMAQI
4th Nov 2025284 AMAQI
4th Nov 2025285 AMAQI
4th Nov 2025286 AMAQI
4th Nov 2025287 AMAQI
10°C6/14°C
4th Nov 2025288 AMAQI
4th Nov 2025289 AMAQI
4th Nov 20252810 AMAQI
4th Nov 20253311 AMAQI
4th Nov 20253312 PMAQI
4th Nov 2025321 PMAQI
4th Nov 2025282 PMAQI
4th Nov 2025273 PMAQI
4th Nov 2025224 PMAQI
4th Nov 2025225 PMAQI
4th Nov 2025206 PMAQI
4th Nov 2025177 PMAQI
4th Nov 2025178 PMAQI
4th Nov 2025179 PMAQI
4th Nov 20251710 PMAQI
4th Nov 20251711 PMAQI
5th Nov 20251712 AMAQI
5th Nov 2025171 AMAQI
5th Nov 2025172 AMAQI
5th Nov 2025173 AMAQI
5th Nov 2025174 AMAQI
5th Nov 2025175 AMAQI
5th Nov 2025176 AMAQI
5th Nov 2025177 AMAQI
13°C12/15°C
5th Nov 2025178 AMAQI
8 AM5th Nov 2025179 AMAQI
5th Nov 20251710 AMAQI
1 PM
6 PM
1 AM
7 AM
--°C/°C
Day time
Avg. Highest Time
1 PM - 6 PM
40AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
8 AM - 9 AM
36AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 PM to 6 PM (Avg. 40), while the lowest AQI was between 8 AM to 9 AM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 3 AM
40AQI
4 hours / Day
120 hours / Month
Avg. Lowest Time
4 AM - 7 AM
36AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 40), while the lowest AQI was between 4 AM to 7 AM (Avg. 36).
2025 Days Vs Air Quality
Sint Niklaas, Flanders, Belgium
2025
73%
226
24%
73
3%
9
Total number of days with different AQI categories in last 309 days in 2025 (56 days remaining)
Good
226 DaysModerate
73 DaysPoor
9 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 73%
Health Risk Level:
Low
In 2025, 73% of 309 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
Sint Niklaas, Flanders, Belgium
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
30AQI
30AQI
2nd January 2025
23AQI
23AQI
3rd January 2025
27AQI
27AQI
4th January 2025
58AQI
58AQI
5th January 2025
33AQI
33AQI
6th January 2025
21AQI
21AQI
7th January 2025
20AQI
20AQI
8th January 2025
32AQI
32AQI
9th January 2025
28AQI
28AQI
10th January 2025
57AQI
57AQI
11th January 2025
99AQI
99AQI
12th January 2025
65AQI
65AQI
13th January 2025
69AQI
69AQI
14th January 2025
86AQI
86AQI
15th January 2025
93AQI
93AQI
16th January 2025
62AQI
62AQI
17th January 2025
81AQI
81AQI
18th January 2025
74AQI
74AQI
19th January 2025
93AQI
93AQI
20th January 2025
112AQI
112AQI
21st January 2025
85AQI
85AQI
22nd January 2025
78AQI
78AQI
23rd January 2025
59AQI
59AQI
24th January 2025
27AQI
27AQI
25th January 2025
32AQI
32AQI
26th January 2025
28AQI
28AQI
27th January 2025
17AQI
17AQI
28th January 2025
20AQI
20AQI
29th January 2025
26AQI
26AQI
30th January 2025
33AQI
33AQI
31st January 2025
51AQI
51AQI
1st February 2025
60AQI
60AQI
2nd February 2025
68AQI
68AQI
3rd February 2025
104AQI
104AQI
4th February 2025
70AQI
70AQI
5th February 2025
76AQI
76AQI
6th February 2025
65AQI
65AQI
7th February 2025
55AQI
55AQI
8th February 2025
67AQI
67AQI
9th February 2025
64AQI
64AQI
10th February 2025
138AQI
138AQI
11th February 2025
92AQI
92AQI
12th February 2025
86AQI
86AQI
13th February 2025
106AQI
106AQI
14th February 2025
118AQI
118AQI
15th February 2025
88AQI
88AQI
16th February 2025
61AQI
61AQI
17th February 2025
70AQI
70AQI
18th February 2025
78AQI
78AQI
19th February 2025
81AQI
81AQI
20th February 2025
80AQI
80AQI
21st February 2025
53AQI
53AQI
22nd February 2025
48AQI
48AQI
23rd February 2025
43AQI
43AQI
24th February 2025
23AQI
23AQI
25th February 2025
50AQI
50AQI
26th February 2025
36AQI
36AQI
27th February 2025
29AQI
29AQI
28th February 2025
37AQI
37AQI
1st March 2025
42AQI
42AQI
2nd March 2025
65AQI
65AQI
3rd March 2025
92AQI
92AQI
4th March 2025
129AQI
129AQI
5th March 2025
107AQI
107AQI
6th March 2025
84AQI
84AQI
7th March 2025
59AQI
59AQI
8th March 2025
71AQI
71AQI
9th March 2025
89AQI
89AQI
10th March 2025
125AQI
125AQI
11th March 2025
83AQI
83AQI
12th March 2025
32AQI
32AQI
13th March 2025
40AQI
40AQI
14th March 2025
32AQI
32AQI
15th March 2025
42AQI
42AQI
16th March 2025
44AQI
44AQI
17th March 2025
38AQI
38AQI
18th March 2025
34AQI
34AQI
19th March 2025
48AQI
48AQI
20th March 2025
57AQI
57AQI
21st March 2025
62AQI
62AQI
22nd March 2025
38AQI
38AQI
23rd March 2025
24AQI
24AQI
24th March 2025
84AQI
84AQI
25th March 2025
121AQI
121AQI
26th March 2025
57AQI
57AQI
27th March 2025
66AQI
66AQI
28th March 2025
75AQI
75AQI
29th March 2025
39AQI
39AQI
30th March 2025
36AQI
36AQI
31st March 2025
36AQI
36AQI
1st April 2025
39AQI
39AQI
2nd April 2025
42AQI
42AQI
3rd April 2025
56AQI
56AQI
4th April 2025
62AQI
62AQI
5th April 2025
46AQI
46AQI
6th April 2025
20AQI
20AQI
7th April 2025
34AQI
34AQI
8th April 2025
48AQI
48AQI
9th April 2025
55AQI
55AQI
10th April 2025
47AQI
47AQI
11th April 2025
62AQI
62AQI
12th April 2025
74AQI
74AQI
13th April 2025
49AQI
49AQI
14th April 2025
28AQI
28AQI
15th April 2025
39AQI
39AQI
16th April 2025
24AQI
24AQI
17th April 2025
39AQI
39AQI
18th April 2025
49AQI
49AQI
19th April 2025
44AQI
44AQI
20th April 2025
48AQI
48AQI
21st April 2025
45AQI
45AQI
22nd April 2025
57AQI
57AQI
23rd April 2025
39AQI
39AQI
24th April 2025
63AQI
63AQI
25th April 2025
51AQI
51AQI
26th April 2025
65AQI
65AQI
27th April 2025
46AQI
46AQI
28th April 2025
57AQI
57AQI
29th April 2025
52AQI
52AQI
30th April 2025
49AQI
49AQI
1st May 2025
48AQI
48AQI
2nd May 2025
70AQI
70AQI
3rd May 2025
50AQI
50AQI
4th May 2025
22AQI
22AQI
5th May 2025
23AQI
23AQI
6th May 2025
23AQI
23AQI
7th May 2025
32AQI
32AQI
8th May 2025
27AQI
27AQI
9th May 2025
25AQI
25AQI
10th May 2025
26AQI
26AQI
11th May 2025
26AQI
26AQI
12th May 2025
23AQI
23AQI
13th May 2025
40AQI
40AQI
14th May 2025
42AQI
42AQI
15th May 2025
44AQI
44AQI
16th May 2025
36AQI
36AQI
17th May 2025
36AQI
36AQI
18th May 2025
38AQI
38AQI
19th May 2025
35AQI
35AQI
20th May 2025
30AQI
30AQI
21st May 2025
42AQI
42AQI
22nd May 2025
30AQI
30AQI
23rd May 2025
20AQI
20AQI
24th May 2025
29AQI
29AQI
25th May 2025
20AQI
20AQI
26th May 2025
30AQI
30AQI
27th May 2025
20AQI
20AQI
28th May 2025
22AQI
22AQI
29th May 2025
27AQI
27AQI
30th May 2025
25AQI
25AQI
31st May 2025
41AQI
41AQI
1st June 2025
39AQI
39AQI
2nd June 2025
28AQI
28AQI
3rd June 2025
27AQI
27AQI
4th June 2025
22AQI
22AQI
5th June 2025
18AQI
18AQI
6th June 2025
18AQI
18AQI
7th June 2025
14AQI
14AQI
8th June 2025
18AQI
18AQI
9th June 2025
44AQI
44AQI
10th June 2025
57AQI
57AQI
11th June 2025
42AQI
42AQI
12th June 2025
47AQI
47AQI
13th June 2025
55AQI
55AQI
14th June 2025
49AQI
49AQI
15th June 2025
35AQI
35AQI
16th June 2025
35AQI
35AQI
17th June 2025
36AQI
36AQI
18th June 2025
35AQI
35AQI
19th June 2025
36AQI
36AQI
20th June 2025
34AQI
34AQI
21st June 2025
32AQI
32AQI
22nd June 2025
29AQI
29AQI
23rd June 2025
23AQI
23AQI
24th June 2025
24AQI
24AQI
25th June 2025
23AQI
23AQI
26th June 2025
27AQI
27AQI
27th June 2025
28AQI
28AQI
28th June 2025
20AQI
20AQI
29th June 2025
18AQI
18AQI
30th June 2025
25AQI
25AQI
1st July 2025
31AQI
31AQI
2nd July 2025
38AQI
38AQI
3rd July 2025
24AQI
24AQI
4th July 2025
22AQI
22AQI
5th July 2025
21AQI
21AQI
6th July 2025
18AQI
18AQI
7th July 2025
20AQI
20AQI
8th July 2025
21AQI
21AQI
9th July 2025
26AQI
26AQI
10th July 2025
27AQI
27AQI
11th July 2025
24AQI
24AQI
12th July 2025
23AQI
23AQI
13th July 2025
25AQI
25AQI
14th July 2025
38AQI
38AQI
15th July 2025
28AQI
28AQI
16th July 2025
25AQI
25AQI
17th July 2025
24AQI
24AQI
18th July 2025
24AQI
24AQI
19th July 2025
34AQI
34AQI
20th July 2025
36AQI
36AQI
21st July 2025
19AQI
19AQI
22nd July 2025
20AQI
20AQI
23rd July 2025
20AQI
20AQI
24th July 2025
26AQI
26AQI
25th July 2025
31AQI
31AQI
26th July 2025
39AQI
39AQI
27th July 2025
25AQI
25AQI
28th July 2025
25AQI
25AQI
29th July 2025
33AQI
33AQI
30th July 2025
29AQI
29AQI
31st July 2025
26AQI
26AQI
1st August 2025
21AQI
21AQI
2nd August 2025
20AQI
20AQI
3rd August 2025
22AQI
22AQI
4th August 2025
25AQI
25AQI
5th August 2025
22AQI
22AQI
6th August 2025
26AQI
26AQI
7th August 2025
27AQI
27AQI
8th August 2025
31AQI
31AQI
9th August 2025
48AQI
48AQI
10th August 2025
37AQI
37AQI
11th August 2025
42AQI
42AQI
12th August 2025
48AQI
48AQI
13th August 2025
57AQI
57AQI
14th August 2025
57AQI
57AQI
15th August 2025
41AQI
41AQI
16th August 2025
47AQI
47AQI
17th August 2025
32AQI
32AQI
18th August 2025
23AQI
23AQI
19th August 2025
24AQI
24AQI
20th August 2025
28AQI
28AQI
21st August 2025
24AQI
24AQI
22nd August 2025
19AQI
19AQI
23rd August 2025
20AQI
20AQI
24th August 2025
19AQI
19AQI
25th August 2025
21AQI
21AQI
26th August 2025
30AQI
30AQI
27th August 2025
28AQI
28AQI
28th August 2025
29AQI
29AQI
29th August 2025
23AQI
23AQI
30th August 2025
20AQI
20AQI
31st August 2025
18AQI
18AQI
1st September 2025
21AQI
21AQI
2nd September 2025
18AQI
18AQI
3rd September 2025
17AQI
17AQI
4th September 2025
17AQI
17AQI
5th September 2025
19AQI
19AQI
6th September 2025
21AQI
21AQI
7th September 2025
21AQI
21AQI
8th September 2025
23AQI
23AQI
9th September 2025
22AQI
22AQI
10th September 2025
23AQI
23AQI
11th September 2025
20AQI
20AQI
12th September 2025
19AQI
19AQI
13th September 2025
17AQI
17AQI
14th September 2025
18AQI
18AQI
15th September 2025
23AQI
23AQI
16th September 2025
25AQI
25AQI
17th September 2025
22AQI
22AQI
18th September 2025
15AQI
15AQI
19th September 2025
21AQI
21AQI
20th September 2025
27AQI
27AQI
21st September 2025
22AQI
22AQI
22nd September 2025
18AQI
18AQI
23rd September 2025
16AQI
16AQI
24th September 2025
13AQI
13AQI
25th September 2025
15AQI
15AQI
26th September 2025
25AQI
25AQI
27th September 2025
46AQI
46AQI
28th September 2025
35AQI
35AQI
29th September 2025
37AQI
37AQI
30th September 2025
18AQI
18AQI
1st October 2025
63AQI
63AQI
2nd October 2025
57AQI
57AQI
3rd October 2025
45AQI
45AQI
4th October 2025
38AQI
38AQI
5th October 2025
44AQI
44AQI
6th October 2025
51AQI
51AQI
7th October 2025
59AQI
59AQI
8th October 2025
59AQI
59AQI
9th October 2025
50AQI
50AQI
10th October 2025
53AQI
53AQI
11th October 2025
79AQI
79AQI
12th October 2025
62AQI
62AQI
13th October 2025
42AQI
42AQI
14th October 2025
56AQI
56AQI
15th October 2025
50AQI
50AQI
16th October 2025
50AQI
50AQI
17th October 2025
53AQI
53AQI
18th October 2025
53AQI
53AQI
19th October 2025
51AQI
51AQI
20th October 2025
41AQI
41AQI
21st October 2025
25AQI
25AQI
22nd October 2025
28AQI
28AQI
23rd October 2025
26AQI
26AQI
24th October 2025
22AQI
22AQI
25th October 2025
17AQI
17AQI
26th October 2025
18AQI
18AQI
27th October 2025
24AQI
24AQI
28th October 2025
27AQI
27AQI
29th October 2025
31AQI
31AQI
30th October 2025
32AQI
32AQI
31st October 2025
29AQI
29AQI
1st November 2025
18AQI
18AQI
2nd November 2025
20AQI
20AQI
3rd November 2025
34AQI
34AQI
4th November 2025
29AQI
29AQI
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
52AQI
70AQI
63AQI
48AQI
32AQI
31AQI
27AQI
30AQI
22AQI
43AQI
25AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202541AQI
15
15
1
7
17
4
14
13
4
19
11
30
1
28
2
31
29
2
30
19
12
4
226
73
9
Highest AQI recorded in
February70AQI
Lowest AQI recorded in
September22AQI
202438AQI
18
13
26
3
21
10
30
20
11
24
6
29
2
28
3
22
8
28
3
17
13
23
8
286
80
Highest AQI recorded in
January46AQI
Lowest AQI recorded in
April23AQI
202337AQI
3
23
8
20
10
22
9
19
11
30
1
29
2
24
5
1
27
4
27
2
21
10
245
62
1
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
July26AQI
202244AQI
16
12
3
19
2
7
20
4
18
12
19
12
28
2
23
1
1
27
1
23
6
4
185
68
7
Highest AQI recorded in
March73AQI
Lowest AQI recorded in
November25AQI
202150AQI
14
16
7
20
14
13
3
1
15
12
3
26
5
12
18
19
12
25
6
14
16
22
9
16
14
16
15
200
156
6
1
Highest AQI recorded in
March65AQI
Lowest AQI recorded in
August37AQI
202044AQI
7
4
2
6
14
1
17
1
23
7
29
2
20
9
2
21
7
2
27
4
14
12
4
22
7
1
186
67
12
Highest AQI recorded in
November60AQI
Lowest AQI recorded in
July28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
50AQILeast Polluted Year Recorded
2023(Avg.)
37AQISint Niklaas's annual 2025 AQI (41) shows an average percentage change of -1.8% (improved AQI) compared to previous years: 2020 (44), 2021 (50), 2022 (44), 2023 (37), 2024 (38).
