Country Background

Zalla, Portugalete, Basque Country, Spain 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+

October Air Quality Analysis

Zalla, Portugalete, Basque Country, Spain

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
23rd Oct 2022
88AQI
Lowest AQI recorded on
27th Oct 2024
16AQI


Same Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 77 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 18th Oct - 19th Oct 2025

Zalla, Portugalete, Basque Country, Spain

AQI
Day
Night
.

8 AM18th Oct 2025

7 PM

7 AM19th Oct 2025

Day time
Avg. Highest Time
12AMNaNth undefined

AQI

Avg. Lowest Time
12AMNaNth undefined

AQI

Night time
Avg. Highest Time
8AM18th Oct

77AQI

Avg. Lowest Time
9PM18th Oct

51AQI

In the last 24 hours,

Zalla's AQI reached its highest point of 77 at 8 AM during the Night, while the lowest point, undefined, was recorded at 7 AM during the Night between 18th Oct and 19th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Zalla, Portugalete, Basque Country, Spain

SepOct
19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th
Day
Night
19th Sep 2025548 AMAQI
19th Sep 2025539 AMAQI
19th Sep 20255410 AMAQI
19th Sep 20255411 AMAQI
19th Sep 20255412 PMAQI
19th Sep 2025561 PMAQI
19th Sep 2025522 PMAQI
19th Sep 2025523 PMAQI
19th Sep 2025524 PMAQI
19th Sep 2025525 PMAQI
19th Sep 2025526 PMAQI
19th Sep 2025517 PMAQI
19th Sep 2025528 PMAQI
19th Sep 2025529 PMAQI
19th Sep 20255210 PMAQI
19th Sep 20255211 PMAQI
20th Sep 20255212 AMAQI
20th Sep 2025521 AMAQI
20th Sep 2025522 AMAQI
20th Sep 2025563 AMAQI
20th Sep 2025554 AMAQI
20th Sep 2025545 AMAQI
20th Sep 2025526 AMAQI
20th Sep 2025517 AMAQI

25°C19/36°C

20th Sep 2025538 AMAQI
20th Sep 2025539 AMAQI
20th Sep 20255210 AMAQI
20th Sep 20255211 AMAQI
20th Sep 20255312 PMAQI
20th Sep 2025521 PMAQI
20th Sep 2025512 PMAQI
20th Sep 2025513 PMAQI
20th Sep 2025514 PMAQI
20th Sep 2025505 PMAQI
20th Sep 2025506 PMAQI
20th Sep 2025507 PMAQI
20th Sep 2025488 PMAQI
20th Sep 2025509 PMAQI
20th Sep 20255010 PMAQI
20th Sep 20255011 PMAQI
21st Sep 20254912 AMAQI
21st Sep 2025501 AMAQI
21st Sep 2025422 AMAQI
21st Sep 2025203 AMAQI
21st Sep 2025194 AMAQI
21st Sep 2025195 AMAQI
21st Sep 2025266 AMAQI
21st Sep 2025267 AMAQI

21°C16/27°C

21st Sep 2025268 AMAQI
21st Sep 2025269 AMAQI
21st Sep 20252710 AMAQI
21st Sep 20252811 AMAQI
21st Sep 20252812 PMAQI
21st Sep 2025301 PMAQI
21st Sep 2025282 PMAQI
21st Sep 2025283 PMAQI
21st Sep 2025284 PMAQI
21st Sep 2025295 PMAQI
21st Sep 2025286 PMAQI
21st Sep 2025277 PMAQI
21st Sep 2025288 PMAQI
21st Sep 2025289 PMAQI
21st Sep 20252910 PMAQI
21st Sep 20252811 PMAQI
22nd Sep 20253012 AMAQI
22nd Sep 2025291 AMAQI
22nd Sep 2025252 AMAQI
22nd Sep 2025163 AMAQI
22nd Sep 2025174 AMAQI
22nd Sep 2025185 AMAQI
22nd Sep 2025206 AMAQI
22nd Sep 2025187 AMAQI

13°C11/15°C

22nd Sep 2025188 AMAQI
22nd Sep 2025219 AMAQI
22nd Sep 20252310 AMAQI
22nd Sep 20252411 AMAQI
22nd Sep 20252312 PMAQI
22nd Sep 2025201 PMAQI
22nd Sep 2025232 PMAQI
22nd Sep 2025213 PMAQI
22nd Sep 2025214 PMAQI
22nd Sep 2025225 PMAQI
22nd Sep 2025216 PMAQI
22nd Sep 2025207 PMAQI
22nd Sep 2025208 PMAQI
22nd Sep 2025219 PMAQI
22nd Sep 20252110 PMAQI
22nd Sep 20252111 PMAQI
23rd Sep 20252112 AMAQI
23rd Sep 2025221 AMAQI
23rd Sep 2025212 AMAQI
23rd Sep 2025233 AMAQI
23rd Sep 2025224 AMAQI
23rd Sep 2025305 AMAQI
23rd Sep 2025236 AMAQI
23rd Sep 2025227 AMAQI

12°C10/15°C

23rd Sep 2025218 AMAQI
23rd Sep 2025229 AMAQI
23rd Sep 20252210 AMAQI
23rd Sep 20252211 AMAQI
23rd Sep 20252612 PMAQI
23rd Sep 2025231 PMAQI
23rd Sep 2025212 PMAQI
23rd Sep 2025203 PMAQI
23rd Sep 2025214 PMAQI
23rd Sep 2025205 PMAQI
23rd Sep 2025196 PMAQI
23rd Sep 2025207 PMAQI
23rd Sep 2025218 PMAQI
23rd Sep 2025219 PMAQI
23rd Sep 20252110 PMAQI
23rd Sep 20252111 PMAQI
24th Sep 20252212 AMAQI
24th Sep 2025211 AMAQI
24th Sep 2025222 AMAQI
24th Sep 2025243 AMAQI
24th Sep 2025184 AMAQI
24th Sep 2025185 AMAQI
24th Sep 2025186 AMAQI
24th Sep 2025207 AMAQI

12°C10/14°C

24th Sep 2025238 AMAQI
24th Sep 2025269 AMAQI
24th Sep 20252610 AMAQI
24th Sep 20252411 AMAQI
24th Sep 20252312 PMAQI
24th Sep 2025251 PMAQI
24th Sep 2025222 PMAQI
24th Sep 2025223 PMAQI
24th Sep 2025214 PMAQI
24th Sep 2025205 PMAQI
24th Sep 2025206 PMAQI
24th Sep 2025207 PMAQI
24th Sep 2025208 PMAQI
24th Sep 2025209 PMAQI
24th Sep 20252110 PMAQI
24th Sep 20252011 PMAQI
25th Sep 20252212 AMAQI
25th Sep 2025211 AMAQI
25th Sep 2025222 AMAQI
25th Sep 2025293 AMAQI
25th Sep 2025324 AMAQI
25th Sep 2025205 AMAQI
25th Sep 2025216 AMAQI
25th Sep 2025217 AMAQI

13°C11/17°C

25th Sep 2025268 AMAQI
25th Sep 2025289 AMAQI
25th Sep 20252810 AMAQI
25th Sep 20252811 AMAQI
25th Sep 20253712 PMAQI
25th Sep 2025451 PMAQI
25th Sep 2025532 PMAQI
25th Sep 2025383 PMAQI
25th Sep 2025324 PMAQI
25th Sep 2025325 PMAQI
25th Sep 2025336 PMAQI
25th Sep 2025327 PMAQI
25th Sep 2025298 PMAQI
25th Sep 2025229 PMAQI
25th Sep 20251510 PMAQI
25th Sep 20251411 PMAQI
26th Sep 20251812 AMAQI
26th Sep 2025301 AMAQI
26th Sep 2025362 AMAQI
26th Sep 2025373 AMAQI
26th Sep 2025444 AMAQI
26th Sep 2025425 AMAQI
26th Sep 2025436 AMAQI
26th Sep 2025437 AMAQI

13°C9/18°C

26th Sep 2025348 AMAQI
26th Sep 2025259 AMAQI
26th Sep 20252210 AMAQI
26th Sep 20252511 AMAQI
26th Sep 20252812 PMAQI
26th Sep 2025381 PMAQI
26th Sep 2025462 PMAQI
26th Sep 2025373 PMAQI
26th Sep 2025334 PMAQI
26th Sep 2025325 PMAQI
26th Sep 2025326 PMAQI
26th Sep 2025327 PMAQI
26th Sep 2025328 PMAQI
26th Sep 2025309 PMAQI
26th Sep 20252510 PMAQI
26th Sep 20252111 PMAQI
27th Sep 20252812 AMAQI
27th Sep 2025281 AMAQI
27th Sep 2025312 AMAQI
27th Sep 2025363 AMAQI
27th Sep 2025424 AMAQI
27th Sep 2025425 AMAQI
27th Sep 2025386 AMAQI
27th Sep 2025387 AMAQI

14°C9/20°C

27th Sep 2025398 AMAQI
27th Sep 2025379 AMAQI
27th Sep 20253710 AMAQI
27th Sep 20253711 AMAQI
27th Sep 20253312 PMAQI
27th Sep 2025351 PMAQI
27th Sep 2025342 PMAQI
27th Sep 2025253 PMAQI
27th Sep 2025334 PMAQI
27th Sep 2025315 PMAQI
27th Sep 2025286 PMAQI
27th Sep 2025287 PMAQI
27th Sep 2025358 PMAQI
27th Sep 2025439 PMAQI
27th Sep 20255210 PMAQI
27th Sep 20255311 PMAQI
28th Sep 20255312 AMAQI
28th Sep 2025491 AMAQI
28th Sep 2025442 AMAQI
28th Sep 2025403 AMAQI
28th Sep 2025414 AMAQI
28th Sep 2025395 AMAQI
28th Sep 2025296 AMAQI
28th Sep 2025227 AMAQI

18°C11/27°C

28th Sep 2025298 AMAQI
28th Sep 2025339 AMAQI
28th Sep 20253310 AMAQI
28th Sep 20253311 AMAQI
28th Sep 20252912 PMAQI
28th Sep 2025251 PMAQI
28th Sep 2025242 PMAQI
28th Sep 2025313 PMAQI
28th Sep 2025334 PMAQI
28th Sep 2025335 PMAQI
28th Sep 2025336 PMAQI
28th Sep 2025357 PMAQI
28th Sep 2025398 PMAQI
28th Sep 2025369 PMAQI
28th Sep 20253210 PMAQI
28th Sep 20253011 PMAQI
29th Sep 20253512 AMAQI
29th Sep 2025301 AMAQI
29th Sep 2025282 AMAQI
29th Sep 2025333 AMAQI
29th Sep 2025324 AMAQI
29th Sep 2025355 AMAQI
29th Sep 2025416 AMAQI
29th Sep 2025377 AMAQI

18°C15/22°C

29th Sep 2025308 AMAQI
29th Sep 2025249 AMAQI
29th Sep 20252210 AMAQI
29th Sep 20252411 AMAQI
29th Sep 20253612 PMAQI
29th Sep 2025361 PMAQI
29th Sep 2025362 PMAQI
29th Sep 2025273 PMAQI
29th Sep 2025264 PMAQI
29th Sep 2025275 PMAQI
29th Sep 2025296 PMAQI
29th Sep 2025307 PMAQI
29th Sep 2025218 PMAQI
29th Sep 2025229 PMAQI
29th Sep 20253510 PMAQI
29th Sep 20253511 PMAQI
30th Sep 20253412 AMAQI
30th Sep 2025351 AMAQI
30th Sep 2025422 AMAQI
30th Sep 2025483 AMAQI
30th Sep 2025444 AMAQI
30th Sep 2025445 AMAQI
30th Sep 2025386 AMAQI
30th Sep 2025347 AMAQI

16°C13/19°C

30th Sep 2025308 AMAQI
30th Sep 2025349 AMAQI
30th Sep 20252810 AMAQI
30th Sep 20252611 AMAQI
30th Sep 20252512 PMAQI
30th Sep 2025301 PMAQI
30th Sep 2025392 PMAQI
30th Sep 2025373 PMAQI
30th Sep 2025354 PMAQI
30th Sep 2025315 PMAQI
30th Sep 2025326 PMAQI
30th Sep 2025407 PMAQI
30th Sep 2025428 PMAQI
30th Sep 2025389 PMAQI
30th Sep 20253710 PMAQI
30th Sep 20253311 PMAQI
1st Oct 20252912 AMAQI
1st Oct 2025271 AMAQI
1st Oct 2025242 AMAQI
1st Oct 2025223 AMAQI
1st Oct 2025244 AMAQI
1st Oct 2025285 AMAQI
1st Oct 2025286 AMAQI
1st Oct 2025337 AMAQI

16°C13/20°C

1st Oct 2025368 AMAQI
1st Oct 2025499 AMAQI
1st Oct 20254910 AMAQI
1st Oct 20254711 AMAQI
1st Oct 20255112 PMAQI
1st Oct 2025501 PMAQI
1st Oct 2025482 PMAQI
1st Oct 2025543 PMAQI
1st Oct 2025514 PMAQI
1st Oct 2025555 PMAQI
1st Oct 2025566 PMAQI
1st Oct 2025537 PMAQI
1st Oct 2025538 PMAQI
1st Oct 2025509 PMAQI
1st Oct 20255610 PMAQI
1st Oct 20255911 PMAQI
2nd Oct 20255912 AMAQI
2nd Oct 2025621 AMAQI
2nd Oct 2025602 AMAQI
2nd Oct 2025583 AMAQI
2nd Oct 2025604 AMAQI
2nd Oct 2025575 AMAQI
2nd Oct 2025576 AMAQI
2nd Oct 2025547 AMAQI

15°C11/20°C

2nd Oct 2025578 AMAQI
2nd Oct 2025539 AMAQI
2nd Oct 20255310 AMAQI
2nd Oct 20255211 AMAQI
2nd Oct 20255312 PMAQI
2nd Oct 2025521 PMAQI
2nd Oct 2025502 PMAQI
2nd Oct 2025513 PMAQI
2nd Oct 2025544 PMAQI
2nd Oct 2025525 PMAQI
2nd Oct 2025546 PMAQI
2nd Oct 2025557 PMAQI
2nd Oct 2025508 PMAQI
2nd Oct 2025419 PMAQI
2nd Oct 20255210 PMAQI
2nd Oct 20255411 PMAQI
3rd Oct 20255412 AMAQI
3rd Oct 2025541 AMAQI
3rd Oct 2025542 AMAQI
3rd Oct 2025553 AMAQI
3rd Oct 2025534 AMAQI
3rd Oct 2025525 AMAQI
3rd Oct 2025526 AMAQI
3rd Oct 2025527 AMAQI

17°C11/24°C

3rd Oct 2025518 AMAQI
3rd Oct 2025519 AMAQI
3rd Oct 20255310 AMAQI
3rd Oct 20255211 AMAQI
3rd Oct 20255412 PMAQI
3rd Oct 2025461 PMAQI
3rd Oct 2025572 PMAQI
3rd Oct 2025573 PMAQI
3rd Oct 2025714 PMAQI
3rd Oct 2025735 PMAQI
3rd Oct 2025776 PMAQI
3rd Oct 2025757 PMAQI
3rd Oct 2025718 PMAQI
3rd Oct 2025689 PMAQI
3rd Oct 20257010 PMAQI
3rd Oct 20257211 PMAQI
4th Oct 20257512 AMAQI
4th Oct 2025831 AMAQI
4th Oct 2025852 AMAQI
4th Oct 2025843 AMAQI
4th Oct 2025794 AMAQI
4th Oct 2025805 AMAQI
4th Oct 2025806 AMAQI
4th Oct 2025787 AMAQI

17°C15/21°C

4th Oct 2025718 AMAQI
4th Oct 2025709 AMAQI
4th Oct 20257210 AMAQI
4th Oct 20257411 AMAQI
4th Oct 20257412 PMAQI
4th Oct 2025711 PMAQI
4th Oct 2025622 PMAQI
4th Oct 2025593 PMAQI
4th Oct 2025624 PMAQI
4th Oct 2025665 PMAQI
4th Oct 2025616 PMAQI
4th Oct 2025567 PMAQI
4th Oct 2025318 PMAQI
4th Oct 2025479 PMAQI
4th Oct 20255110 PMAQI
4th Oct 20255411 PMAQI
5th Oct 20255212 AMAQI
5th Oct 2025541 AMAQI
5th Oct 2025552 AMAQI
5th Oct 2025533 AMAQI
5th Oct 2025544 AMAQI
5th Oct 2025475 AMAQI
5th Oct 2025436 AMAQI
5th Oct 2025457 AMAQI

16°C13/23°C

5th Oct 2025438 AMAQI
5th Oct 2025419 AMAQI
5th Oct 20254710 AMAQI
5th Oct 20254511 AMAQI
5th Oct 20254712 PMAQI
5th Oct 2025431 PMAQI
5th Oct 2025452 PMAQI
5th Oct 2025433 PMAQI
5th Oct 2025394 PMAQI
5th Oct 2025405 PMAQI
5th Oct 2025386 PMAQI
5th Oct 2025467 PMAQI
5th Oct 2025518 PMAQI
5th Oct 2025509 PMAQI
5th Oct 20255310 PMAQI
5th Oct 20255611 PMAQI
6th Oct 20255712 AMAQI
6th Oct 2025571 AMAQI
6th Oct 2025542 AMAQI
6th Oct 2025533 AMAQI
6th Oct 2025554 AMAQI
6th Oct 2025565 AMAQI
6th Oct 2025566 AMAQI
6th Oct 2025537 AMAQI

14°C11/16°C

6th Oct 2025538 AMAQI
6th Oct 2025469 AMAQI
6th Oct 20253910 AMAQI
6th Oct 20253811 AMAQI
6th Oct 20254412 PMAQI
6th Oct 2025451 PMAQI
6th Oct 2025542 PMAQI
6th Oct 2025533 PMAQI
6th Oct 2025534 PMAQI
6th Oct 2025535 PMAQI
6th Oct 2025476 PMAQI
6th Oct 2025497 PMAQI

15°C9/23°C

7th Oct 2025431 PMAQI
7th Oct 2025522 PMAQI
7th Oct 2025493 PMAQI
7th Oct 2025554 PMAQI
7th Oct 2025645 PMAQI
7th Oct 2025656 PMAQI
7th Oct 2025577 PMAQI
7th Oct 2025528 PMAQI
7th Oct 2025429 PMAQI
7th Oct 20256210 PMAQI
7th Oct 20254211 PMAQI
8th Oct 20256012 AMAQI
8th Oct 2025641 AMAQI
8th Oct 2025642 AMAQI
8th Oct 2025623 AMAQI
8th Oct 2025634 AMAQI
8th Oct 2025615 AMAQI
8th Oct 2025616 AMAQI
8th Oct 2025567 AMAQI

17°C12/26°C

8th Oct 2025578 AMAQI
8th Oct 2025559 AMAQI
8th Oct 20255310 AMAQI
8th Oct 20254611 AMAQI
8th Oct 20254812 PMAQI
8th Oct 2025501 PMAQI
8th Oct 2025512 PMAQI
8th Oct 2025533 PMAQI
8th Oct 2025584 PMAQI
8th Oct 2025585 PMAQI
8th Oct 2025566 PMAQI
8th Oct 2025477 PMAQI
8th Oct 2025498 PMAQI
8th Oct 2025499 PMAQI
8th Oct 20254610 PMAQI
8th Oct 20254611 PMAQI
9th Oct 20254712 AMAQI
9th Oct 2025461 AMAQI
9th Oct 2025482 AMAQI
9th Oct 2025423 AMAQI
9th Oct 2025454 AMAQI
9th Oct 2025435 AMAQI
9th Oct 2025486 AMAQI
9th Oct 2025587 AMAQI

16°C14/21°C

9th Oct 2025568 AMAQI
9th Oct 2025549 AMAQI
9th Oct 20254710 AMAQI
9th Oct 20255411 AMAQI
9th Oct 20255512 PMAQI
9th Oct 2025531 PMAQI
9th Oct 2025562 PMAQI
9th Oct 2025563 PMAQI
9th Oct 2025544 PMAQI
9th Oct 2025545 PMAQI
9th Oct 2025536 PMAQI
9th Oct 2025537 PMAQI
9th Oct 2025508 PMAQI
9th Oct 2025569 PMAQI
9th Oct 20256410 PMAQI
9th Oct 20256711 PMAQI
10th Oct 20256812 AMAQI
10th Oct 2025611 AMAQI
10th Oct 2025552 AMAQI
10th Oct 2025513 AMAQI
10th Oct 2025494 AMAQI
10th Oct 2025525 AMAQI
10th Oct 2025676 AMAQI
10th Oct 2025687 AMAQI

15°C14/18°C

10th Oct 2025688 AMAQI
10th Oct 2025619 AMAQI
10th Oct 20256010 AMAQI
10th Oct 20255811 AMAQI
10th Oct 20255712 PMAQI
10th Oct 2025591 PMAQI
10th Oct 2025602 PMAQI
10th Oct 2025563 PMAQI
10th Oct 2025564 PMAQI
10th Oct 2025525 PMAQI
10th Oct 2025526 PMAQI
10th Oct 2025487 PMAQI
10th Oct 2025508 PMAQI
10th Oct 2025559 PMAQI
10th Oct 20255710 PMAQI
10th Oct 20255911 PMAQI
11th Oct 20256112 AMAQI
11th Oct 2025591 AMAQI
11th Oct 2025572 AMAQI
11th Oct 2025533 AMAQI
11th Oct 2025554 AMAQI
11th Oct 2025545 AMAQI
11th Oct 2025566 AMAQI
11th Oct 2025597 AMAQI

15°C11/18°C

11th Oct 2025628 AMAQI
11th Oct 2025569 AMAQI
11th Oct 20255410 AMAQI
11th Oct 20255311 AMAQI
11th Oct 20255112 PMAQI
11th Oct 2025481 PMAQI
11th Oct 2025532 PMAQI
11th Oct 2025533 PMAQI
11th Oct 2025534 PMAQI
11th Oct 2025445 PMAQI
11th Oct 2025406 PMAQI
11th Oct 2025487 PMAQI
11th Oct 2025488 PMAQI
11th Oct 2025419 PMAQI
11th Oct 20256010 PMAQI
11th Oct 20257111 PMAQI
12th Oct 20257112 AMAQI
12th Oct 2025761 AMAQI
12th Oct 2025772 AMAQI
12th Oct 2025773 AMAQI
12th Oct 2025644 AMAQI
12th Oct 2025565 AMAQI
12th Oct 2025576 AMAQI
12th Oct 2025577 AMAQI

15°C9/23°C

12th Oct 2025598 AMAQI
12th Oct 2025709 AMAQI
12th Oct 20256310 AMAQI
12th Oct 20256311 AMAQI
12th Oct 20256412 PMAQI
12th Oct 2025621 PMAQI
12th Oct 2025622 PMAQI
12th Oct 2025563 PMAQI
12th Oct 2025524 PMAQI
12th Oct 2025485 PMAQI
12th Oct 2025516 PMAQI
12th Oct 2025477 PMAQI
12th Oct 2025558 PMAQI
12th Oct 2025599 PMAQI
12th Oct 20253910 PMAQI
12th Oct 20255511 PMAQI
13th Oct 20256412 AMAQI
13th Oct 2025721 AMAQI
13th Oct 2025692 AMAQI
13th Oct 2025703 AMAQI
13th Oct 2025684 AMAQI
13th Oct 2025695 AMAQI
13th Oct 2025696 AMAQI
13th Oct 2025687 AMAQI

18°C14/26°C

13th Oct 2025648 AMAQI
13th Oct 2025679 AMAQI
13th Oct 20256110 AMAQI
13th Oct 20256111 AMAQI
13th Oct 20256112 PMAQI
13th Oct 2025601 PMAQI
13th Oct 2025572 PMAQI
13th Oct 2025603 PMAQI
13th Oct 2025504 PMAQI
13th Oct 2025535 PMAQI
13th Oct 2025546 PMAQI
13th Oct 2025427 PMAQI
13th Oct 2025448 PMAQI
13th Oct 2025469 PMAQI
13th Oct 20255410 PMAQI
13th Oct 20256011 PMAQI
14th Oct 20256212 AMAQI
14th Oct 2025611 AMAQI
14th Oct 2025592 AMAQI
14th Oct 2025623 AMAQI
14th Oct 2025634 AMAQI
14th Oct 2025625 AMAQI
14th Oct 2025656 AMAQI
14th Oct 2025667 AMAQI

18°C14/25°C

14th Oct 2025718 AMAQI
14th Oct 2025619 AMAQI
14th Oct 20255810 AMAQI
14th Oct 20255811 AMAQI
14th Oct 20255912 PMAQI
14th Oct 2025571 PMAQI
14th Oct 2025582 PMAQI
14th Oct 2025593 PMAQI
14th Oct 2025594 PMAQI
14th Oct 2025565 PMAQI
14th Oct 2025586 PMAQI
14th Oct 2025657 PMAQI
14th Oct 2025718 PMAQI
14th Oct 2025839 PMAQI
14th Oct 20258510 PMAQI
14th Oct 20258411 PMAQI
15th Oct 20259012 AMAQI
15th Oct 2025891 AMAQI
15th Oct 2025852 AMAQI
15th Oct 2025813 AMAQI
15th Oct 2025804 AMAQI
15th Oct 2025775 AMAQI
15th Oct 2025766 AMAQI
15th Oct 2025787 AMAQI

17°C14/22°C

15th Oct 2025758 AMAQI
15th Oct 2025799 AMAQI
15th Oct 20257810 AMAQI
15th Oct 20258011 AMAQI
15th Oct 20257512 PMAQI
15th Oct 2025711 PMAQI
15th Oct 2025672 PMAQI
15th Oct 2025653 PMAQI
15th Oct 2025604 PMAQI
15th Oct 2025585 PMAQI
15th Oct 2025606 PMAQI
15th Oct 2025637 PMAQI
15th Oct 2025718 PMAQI
15th Oct 2025709 PMAQI
15th Oct 20257310 PMAQI
15th Oct 20257111 PMAQI
16th Oct 20257212 AMAQI
16th Oct 2025651 AMAQI
16th Oct 2025672 AMAQI
16th Oct 2025683 AMAQI
16th Oct 2025634 AMAQI
16th Oct 2025665 AMAQI
16th Oct 2025716 AMAQI
16th Oct 2025667 AMAQI

15°C12/21°C

16th Oct 2025698 AMAQI
16th Oct 2025709 AMAQI
16th Oct 20257910 AMAQI
16th Oct 20258211 AMAQI
16th Oct 20259212 PMAQI
16th Oct 2025891 PMAQI
16th Oct 2025862 PMAQI
16th Oct 2025793 PMAQI
16th Oct 2025764 PMAQI
16th Oct 2025745 PMAQI
16th Oct 2025736 PMAQI
16th Oct 2025687 PMAQI
16th Oct 2025658 PMAQI
16th Oct 2025669 PMAQI
16th Oct 20257010 PMAQI
16th Oct 20257211 PMAQI
17th Oct 20257412 AMAQI
17th Oct 2025751 AMAQI
17th Oct 2025682 AMAQI
17th Oct 2025713 AMAQI
17th Oct 2025714 AMAQI
17th Oct 2025705 AMAQI
17th Oct 2025706 AMAQI
17th Oct 2025727 AMAQI

15°C12/21°C

17th Oct 2025828 AMAQI
17th Oct 2025819 AMAQI
17th Oct 20257810 AMAQI
17th Oct 20257811 AMAQI
17th Oct 20257512 PMAQI
17th Oct 2025721 PMAQI
17th Oct 2025772 PMAQI
17th Oct 2025753 PMAQI
17th Oct 2025804 PMAQI
17th Oct 2025775 PMAQI
17th Oct 2025756 PMAQI
17th Oct 2025717 PMAQI
17th Oct 2025688 PMAQI
17th Oct 2025769 PMAQI
17th Oct 20257510 PMAQI
17th Oct 20257911 PMAQI
18th Oct 20258112 AMAQI
18th Oct 2025831 AMAQI
18th Oct 2025802 AMAQI
18th Oct 2025803 AMAQI
18th Oct 2025764 AMAQI
18th Oct 2025745 AMAQI
18th Oct 2025776 AMAQI
18th Oct 2025807 AMAQI

16°C12/23°C

18th Oct 2025778 AMAQI
18th Oct 2025729 AMAQI
18th Oct 20256210 AMAQI
18th Oct 20256311 AMAQI
18th Oct 20256212 PMAQI
18th Oct 2025631 PMAQI
18th Oct 2025612 PMAQI
18th Oct 2025613 PMAQI
18th Oct 2025604 PMAQI
18th Oct 2025615 PMAQI
18th Oct 2025606 PMAQI
18th Oct 2025607 PMAQI
18th Oct 2025578 PMAQI
18th Oct 2025519 PMAQI
18th Oct 20256110 PMAQI
18th Oct 20255511 PMAQI
19th Oct 20256312 AMAQI

--°C/°C

8 AM
1 PM
7 PM
1 AM
7 AM

--°C/°C

Day time
Avg. Highest Time
2 PM

50AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
3 PM - 7 PM

47AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 2 PM to 2 PM (Avg. 50), while the lowest AQI was between 3 PM to 7 PM (Avg. 47).
Night time
Avg. Highest Time
12 AM - 7 AM

50AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
8 PM - 9 PM

46AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 7 AM (Avg. 50), while the lowest AQI was between 8 PM to 9 PM (Avg. 46).

2025 Days Vs Air Quality

Zalla, Portugalete, Basque Country, Spain

2025

84%

244

16%

47

Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)

Good
244 Days
Moderate
47 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days



Under WHO’s Safe Air Quality Limits: 84%

Health Risk Level:

Low

In 2025, 84% of 291 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

Zalla, Portugalete, Basque Country, Spain

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
57AQI
2nd January 2025
40AQI
3rd January 2025
37AQI
4th January 2025
29AQI
5th January 2025
30AQI
6th January 2025
32AQI
7th January 2025
32AQI
8th January 2025
29AQI
9th January 2025
27AQI
10th January 2025
31AQI
11th January 2025
28AQI
12th January 2025
31AQI
13th January 2025
41AQI
14th January 2025
46AQI
15th January 2025
52AQI
16th January 2025
59AQI
17th January 2025
49AQI
18th January 2025
55AQI
19th January 2025
46AQI
20th January 2025
39AQI
21st January 2025
39AQI
22nd January 2025
31AQI
23rd January 2025
30AQI
24th January 2025
31AQI
25th January 2025
28AQI
26th January 2025
29AQI
27th January 2025
30AQI
28th January 2025
31AQI
29th January 2025
30AQI
30th January 2025
30AQI
31st January 2025
32AQI
1st February 2025
35AQI
2nd February 2025
30AQI
3rd February 2025
33AQI
4th February 2025
40AQI
5th February 2025
44AQI
6th February 2025
49AQI
7th February 2025
40AQI
8th February 2025
33AQI
9th February 2025
40AQI
10th February 2025
38AQI
11th February 2025
43AQI
12th February 2025
38AQI
13th February 2025
33AQI
14th February 2025
36AQI
15th February 2025
38AQI
16th February 2025
45AQI
17th February 2025
47AQI
18th February 2025
47AQI
19th February 2025
57AQI
20th February 2025
45AQI
21st February 2025
41AQI
22nd February 2025
32AQI
23rd February 2025
33AQI
24th February 2025
30AQI
25th February 2025
29AQI
26th February 2025
28AQI
27th February 2025
38AQI
28th February 2025
40AQI
1st March 2025
39AQI
2nd March 2025
31AQI
3rd March 2025
36AQI
4th March 2025
47AQI
5th March 2025
48AQI
6th March 2025
38AQI
7th March 2025
31AQI
8th March 2025
31AQI
9th March 2025
30AQI
10th March 2025
33AQI
11th March 2025
26AQI
12th March 2025
26AQI
13th March 2025
23AQI
14th March 2025
26AQI
15th March 2025
30AQI
16th March 2025
29AQI
17th March 2025
29AQI
18th March 2025
29AQI
19th March 2025
20AQI
20th March 2025
35AQI
21st March 2025
24AQI
22nd March 2025
17AQI
23rd March 2025
20AQI
24th March 2025
27AQI
25th March 2025
30AQI
26th March 2025
32AQI
27th March 2025
37AQI
28th March 2025
38AQI
29th March 2025
24AQI
30th March 2025
30AQI
31st March 2025
37AQI
1st April 2025
36AQI
2nd April 2025
43AQI
3rd April 2025
22AQI
4th April 2025
34AQI
5th April 2025
21AQI
6th April 2025
26AQI
7th April 2025
36AQI
8th April 2025
44AQI
9th April 2025
51AQI
10th April 2025
47AQI
11th April 2025
44AQI
12th April 2025
38AQI
13th April 2025
29AQI
14th April 2025
29AQI
15th April 2025
17AQI
16th April 2025
17AQI
17th April 2025
23AQI
18th April 2025
24AQI
19th April 2025
13AQI
20th April 2025
18AQI
21st April 2025
21AQI
22nd April 2025
18AQI
23rd April 2025
20AQI
24th April 2025
26AQI
25th April 2025
34AQI
26th April 2025
18AQI
27th April 2025
20AQI
28th April 2025
31AQI
29th April 2025
27AQI
30th April 2025
25AQI
1st May 2025
27AQI
2nd May 2025
37AQI
3rd May 2025
22AQI
4th May 2025
28AQI
5th May 2025
25AQI
6th May 2025
24AQI
7th May 2025
31AQI
8th May 2025
39AQI
9th May 2025
43AQI
10th May 2025
34AQI
11th May 2025
26AQI
12th May 2025
29AQI
13th May 2025
31AQI
14th May 2025
34AQI
15th May 2025
23AQI
16th May 2025
32AQI
17th May 2025
46AQI
18th May 2025
45AQI
19th May 2025
37AQI
20th May 2025
31AQI
21st May 2025
33AQI
22nd May 2025
22AQI
23rd May 2025
32AQI
24th May 2025
32AQI
25th May 2025
33AQI
26th May 2025
23AQI
27th May 2025
26AQI
28th May 2025
30AQI
29th May 2025
33AQI
30th May 2025
49AQI
31st May 2025
45AQI
1st June 2025
20AQI
2nd June 2025
25AQI
3rd June 2025
37AQI
4th June 2025
37AQI
5th June 2025
27AQI
6th June 2025
27AQI
7th June 2025
28AQI
8th June 2025
46AQI
9th June 2025
57AQI
10th June 2025
63AQI
11th June 2025
57AQI
12th June 2025
55AQI
13th June 2025
59AQI
14th June 2025
52AQI
15th June 2025
38AQI
16th June 2025
34AQI
17th June 2025
42AQI
18th June 2025
45AQI
19th June 2025
54AQI
20th June 2025
56AQI
21st June 2025
58AQI
22nd June 2025
60AQI
23rd June 2025
53AQI
24th June 2025
57AQI
25th June 2025
53AQI
26th June 2025
48AQI
27th June 2025
47AQI
28th June 2025
39AQI
29th June 2025
37AQI
30th June 2025
43AQI
1st July 2025
53AQI
2nd July 2025
36AQI
3rd July 2025
33AQI
4th July 2025
35AQI
5th July 2025
39AQI
6th July 2025
37AQI
7th July 2025
30AQI
8th July 2025
28AQI
9th July 2025
30AQI
10th July 2025
32AQI
11th July 2025
38AQI
12th July 2025
40AQI
13th July 2025
46AQI
14th July 2025
42AQI
15th July 2025
37AQI
16th July 2025
43AQI
17th July 2025
48AQI
18th July 2025
40AQI
19th July 2025
34AQI
20th July 2025
33AQI
21st July 2025
32AQI
22nd July 2025
27AQI
23rd July 2025
25AQI
24th July 2025
22AQI
25th July 2025
30AQI
26th July 2025
38AQI
27th July 2025
42AQI
28th July 2025
33AQI
29th July 2025
29AQI
30th July 2025
28AQI
31st July 2025
25AQI
1st August 2025
26AQI
2nd August 2025
25AQI
3rd August 2025
28AQI
4th August 2025
34AQI
5th August 2025
37AQI
6th August 2025
31AQI
7th August 2025
34AQI
8th August 2025
36AQI
9th August 2025
35AQI
10th August 2025
40AQI
11th August 2025
51AQI
12th August 2025
57AQI
13th August 2025
59AQI
14th August 2025
59AQI
15th August 2025
57AQI
16th August 2025
55AQI
17th August 2025
56AQI
18th August 2025
54AQI
19th August 2025
50AQI
20th August 2025
39AQI
21st August 2025
36AQI
22nd August 2025
33AQI
23rd August 2025
32AQI
24th August 2025
34AQI
25th August 2025
36AQI
26th August 2025
42AQI
27th August 2025
35AQI
28th August 2025
32AQI
29th August 2025
26AQI
30th August 2025
21AQI
31st August 2025
20AQI
1st September 2025
22AQI
2nd September 2025
21AQI
3rd September 2025
25AQI
4th September 2025
23AQI
5th September 2025
25AQI
6th September 2025
25AQI
7th September 2025
29AQI
8th September 2025
23AQI
9th September 2025
22AQI
10th September 2025
22AQI
11th September 2025
25AQI
12th September 2025
24AQI
13th September 2025
24AQI
14th September 2025
23AQI
15th September 2025
22AQI
16th September 2025
23AQI
17th September 2025
27AQI
18th September 2025
51AQI
19th September 2025
52AQI
20th September 2025
52AQI
21st September 2025
32AQI
22nd September 2025
23AQI
23rd September 2025
22AQI
24th September 2025
21AQI
25th September 2025
27AQI
26th September 2025
30AQI
27th September 2025
35AQI
28th September 2025
38AQI
29th September 2025
31AQI
30th September 2025
36AQI
1st October 2025
41AQI
2nd October 2025
54AQI
3rd October 2025
59AQI
4th October 2025
68AQI
5th October 2025
48AQI
6th October 2025
53AQI
7th October 2025
53AQI
8th October 2025
55AQI
9th October 2025
51AQI
10th October 2025
59AQI
11th October 2025
55AQI
12th October 2025
62AQI
13th October 2025
60AQI
14th October 2025
64AQI
15th October 2025
77AQI
16th October 2025
72AQI
17th October 2025
75AQI
18th October 2025
77AQI
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
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

36AQI

39AQI

31AQI

28AQI

32AQI

45AQI

35AQI

39AQI

29AQI

60AQI


No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202536AQI

27
4
27
1
31
29
1
31
17
13
30
1
23
8
27
3
2
16
244
47

Highest AQI recorded in

October

60AQI


Lowest AQI recorded in

April

28AQI


202437AQI

23
8
23
6
28
3
29
1
29
2
23
7
25
6
28
3
27
3
30
1
27
3
27
4
319
47

Highest AQI recorded in

July

43AQI


Lowest AQI recorded in

October

28AQI


202337AQI

31
21
7
28
3
29
1
24
7
22
8
28
1
25
5
23
7
20
11
29
29
2
309
52

Highest AQI recorded in

June

43AQI


Lowest AQI recorded in

January

27AQI


202237AQI

20
10
19
2
26
4
1
30
28
3
25
4
10
9
3
1
28
23
8
28
31
269
40
4

Highest AQI recorded in

July

60AQI


Lowest AQI recorded in

November

24AQI


202135AQI

28
2
25
3
27
4
27
3
30
1
25
5
29
2
31
27
3
31
30
28
3
338
26

Highest AQI recorded in

March

41AQI


Lowest AQI recorded in

November

29AQI


202032AQI

7
6
21
16
2
26
4
31
31
29
1
31
24
5
31
247
18

Highest AQI recorded in

March

45AQI


Lowest AQI recorded in

December

25AQI


Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
37AQI
Least Polluted Year Recorded
2020(Avg.)
32AQI


Zalla's annual 2025 AQI (36) shows an average percentage change of 2.7% (worsened AQI) compared to previous years: 2020 (32), 2021 (35), 2022 (37), 2023 (37), 2024 (37).