Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

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+

August Air Quality Analysis

Zalla, Portugalete, Basque Country, Spain

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
24th Aug 2023
64AQI
Lowest AQI recorded on
28th Aug 2023
18AQI

Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 31 of Good air quality, showing improvement over 2025 and 2023 on the same day.

Day & Night AQI Trend: 15th Aug - 16th Aug 2026

Zalla, Portugalete, Basque Country, Spain

AQI
Day
Night
.

7 AM15th Aug 2026

9 PM

6 AM16th Aug 2026

Day time
Avg. Highest Time
9PM15th Aug

38AQI

Avg. Lowest Time
3PM15th Aug

23AQI

Night time
Avg. Highest Time
5AM16th Aug

42AQI

Avg. Lowest Time
6AM16th Aug

29AQI

In the last 24 hours,

Zalla's AQI reached its highest point of 42 at 5 AM during the Night, while the lowest point, 23, was recorded at 3 PM during the Day between 15th Aug and 16th Aug 2026.

Day & Night AQI Trend : Jul - Aug 2026

Zalla, Portugalete, Basque Country, Spain

JulAug
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
18th Jul 2026427 AMAQI
18th Jul 2026408 AMAQI
18th Jul 2026429 AMAQI
18th Jul 20264210 AMAQI
18th Jul 20264011 AMAQI
18th Jul 20264012 PMAQI
18th Jul 2026331 PMAQI
18th Jul 2026362 PMAQI
18th Jul 2026363 PMAQI
18th Jul 2026344 PMAQI
18th Jul 2026295 PMAQI
18th Jul 2026336 PMAQI
18th Jul 2026407 PMAQI
18th Jul 2026408 PMAQI
18th Jul 2026369 PMAQI
18th Jul 20263310 PMAQI
18th Jul 20263611 PMAQI
19th Jul 20264212 AMAQI
19th Jul 2026511 AMAQI
19th Jul 2026462 AMAQI
19th Jul 2026483 AMAQI
19th Jul 2026484 AMAQI
19th Jul 2026465 AMAQI
19th Jul 2026466 AMAQI

20°C17/24°C

19th Jul 2026447 AMAQI
19th Jul 2026448 AMAQI
19th Jul 2026429 AMAQI
19th Jul 20264210 AMAQI
19th Jul 20264011 AMAQI
19th Jul 20264212 PMAQI
19th Jul 2026461 PMAQI
19th Jul 2026462 PMAQI
19th Jul 2026503 PMAQI
19th Jul 2026444 PMAQI
19th Jul 2026465 PMAQI
19th Jul 2026446 PMAQI
19th Jul 2026467 PMAQI
19th Jul 2026428 PMAQI
19th Jul 2026509 PMAQI
19th Jul 20265310 PMAQI
19th Jul 20265611 PMAQI
20th Jul 20265612 AMAQI
20th Jul 2026601 AMAQI
20th Jul 2026592 AMAQI
20th Jul 2026593 AMAQI
20th Jul 2026624 AMAQI
20th Jul 2026605 AMAQI
20th Jul 2026686 AMAQI

22°C17/28°C

20th Jul 2026647 AMAQI
20th Jul 2026658 AMAQI
20th Jul 2026669 AMAQI
20th Jul 20266310 AMAQI
20th Jul 20266211 AMAQI
20th Jul 20266012 PMAQI
20th Jul 2026601 PMAQI
20th Jul 2026582 PMAQI
20th Jul 2026623 PMAQI
20th Jul 2026464 PMAQI
20th Jul 2026495 PMAQI
20th Jul 2026546 PMAQI
20th Jul 2026367 PMAQI
20th Jul 2026368 PMAQI
20th Jul 2026279 PMAQI
20th Jul 20262510 PMAQI
20th Jul 20262911 PMAQI
21st Jul 20262812 AMAQI
21st Jul 2026271 AMAQI
21st Jul 2026272 AMAQI
21st Jul 2026293 AMAQI
21st Jul 2026274 AMAQI
21st Jul 2026406 AMAQI

22°C18/28°C

21st Jul 2026407 AMAQI
21st Jul 2026318 AMAQI
21st Jul 2026299 AMAQI
21st Jul 20263110 AMAQI
21st Jul 20262911 AMAQI
21st Jul 20264012 PMAQI
21st Jul 2026421 PMAQI
21st Jul 2026402 PMAQI
21st Jul 2026253 PMAQI
21st Jul 2026254 PMAQI
21st Jul 2026255 PMAQI
21st Jul 2026256 PMAQI
21st Jul 2026227 PMAQI
21st Jul 2026208 PMAQI
21st Jul 2026239 PMAQI
21st Jul 20262110 PMAQI
21st Jul 20262711 PMAQI
22nd Jul 20262912 AMAQI
22nd Jul 2026331 AMAQI
22nd Jul 2026382 AMAQI
22nd Jul 2026383 AMAQI
22nd Jul 2026444 AMAQI
22nd Jul 2026425 AMAQI
22nd Jul 2026406 AMAQI

21°C17/26°C

22nd Jul 2026407 AMAQI
22nd Jul 2026448 AMAQI
22nd Jul 2026429 AMAQI
22nd Jul 20264210 AMAQI
22nd Jul 20264211 AMAQI
22nd Jul 20264012 PMAQI
22nd Jul 2026381 PMAQI
22nd Jul 2026362 PMAQI
22nd Jul 2026463 PMAQI
22nd Jul 2026444 PMAQI
22nd Jul 2026465 PMAQI
22nd Jul 2026386 PMAQI
22nd Jul 2026297 PMAQI
22nd Jul 2026258 PMAQI
22nd Jul 2026279 PMAQI
22nd Jul 20262910 PMAQI
22nd Jul 20264211 PMAQI
23rd Jul 20264012 AMAQI
23rd Jul 2026441 AMAQI
23rd Jul 2026442 AMAQI
23rd Jul 2026483 AMAQI
23rd Jul 2026444 AMAQI
23rd Jul 2026515 AMAQI
23rd Jul 2026516 AMAQI

22°C17/29°C

23rd Jul 2026557 AMAQI
23rd Jul 2026548 AMAQI
23rd Jul 2026549 AMAQI
23rd Jul 20265510 AMAQI
23rd Jul 20265211 AMAQI
23rd Jul 20264412 PMAQI
23rd Jul 2026331 PMAQI
23rd Jul 2026382 PMAQI
23rd Jul 2026403 PMAQI
23rd Jul 2026444 PMAQI
23rd Jul 2026465 PMAQI
23rd Jul 2026446 PMAQI
23rd Jul 2026447 PMAQI
23rd Jul 2026428 PMAQI
23rd Jul 2026529 PMAQI
23rd Jul 20266410 PMAQI
23rd Jul 20266711 PMAQI
24th Jul 20266912 AMAQI
24th Jul 2026741 AMAQI
24th Jul 2026782 AMAQI
24th Jul 2026743 AMAQI
24th Jul 2026884 AMAQI
24th Jul 2026965 AMAQI
24th Jul 2026896 AMAQI

23°C17/29°C

24th Jul 2026927 AMAQI
24th Jul 2026848 AMAQI
24th Jul 2026789 AMAQI
24th Jul 20267010 AMAQI
24th Jul 20267611 AMAQI
24th Jul 20267812 PMAQI
24th Jul 2026841 PMAQI
24th Jul 2026702 PMAQI
24th Jul 2026693 PMAQI
24th Jul 2026654 PMAQI
24th Jul 2026745 PMAQI
24th Jul 2026766 PMAQI
24th Jul 2026627 PMAQI
24th Jul 2026568 PMAQI
24th Jul 2026659 PMAQI
24th Jul 20266710 PMAQI
24th Jul 20265711 PMAQI
25th Jul 20265312 AMAQI
25th Jul 2026511 AMAQI
25th Jul 2026402 AMAQI
25th Jul 2026403 AMAQI
25th Jul 2026524 AMAQI
25th Jul 2026555 AMAQI
25th Jul 2026536 AMAQI

22°C18/28°C

25th Jul 2026517 AMAQI
25th Jul 2026458 AMAQI
25th Jul 2026469 AMAQI
25th Jul 20264010 AMAQI
25th Jul 20263611 AMAQI
25th Jul 20262912 PMAQI
25th Jul 2026311 PMAQI
25th Jul 2026192 PMAQI
25th Jul 2026193 PMAQI
25th Jul 2026194 PMAQI
25th Jul 2026215 PMAQI
25th Jul 2026276 PMAQI
25th Jul 2026257 PMAQI
25th Jul 2026278 PMAQI
25th Jul 2026259 PMAQI
25th Jul 20262710 PMAQI
25th Jul 20261611 PMAQI
26th Jul 20261412 AMAQI
26th Jul 2026101 AMAQI
26th Jul 2026172 AMAQI
26th Jul 2026173 AMAQI
26th Jul 2026194 AMAQI
26th Jul 2026195 AMAQI
26th Jul 2026386 AMAQI

19°C15/23°C

26th Jul 2026317 AMAQI
26th Jul 2026318 AMAQI
26th Jul 2026299 AMAQI
26th Jul 20262910 AMAQI
26th Jul 20262311 AMAQI
26th Jul 20262112 PMAQI
26th Jul 2026231 PMAQI
26th Jul 2026212 PMAQI
26th Jul 2026123 PMAQI
26th Jul 202684 PMAQI
26th Jul 2026275 PMAQI
26th Jul 2026296 PMAQI
26th Jul 2026217 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026279 PMAQI
26th Jul 20262710 PMAQI
26th Jul 20262111 PMAQI
27th Jul 20262712 AMAQI
27th Jul 2026301 AMAQI
27th Jul 2026232 AMAQI
27th Jul 2026253 AMAQI
27th Jul 2026214 AMAQI
27th Jul 2026215 AMAQI
27th Jul 2026276 AMAQI

19°C16/24°C

27th Jul 2026297 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026279 AMAQI
27th Jul 20262310 AMAQI
27th Jul 20262511 AMAQI
27th Jul 20262712 PMAQI
27th Jul 2026251 PMAQI
27th Jul 2026212 PMAQI
27th Jul 2026293 PMAQI
27th Jul 2026254 PMAQI
27th Jul 2026325 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026299 PMAQI
27th Jul 20263810 PMAQI
27th Jul 20264011 PMAQI
28th Jul 20263412 AMAQI
28th Jul 2026271 AMAQI
28th Jul 2026232 AMAQI
28th Jul 2026253 AMAQI
28th Jul 2026254 AMAQI
28th Jul 2026275 AMAQI
28th Jul 2026366 AMAQI

20°C17/24°C

28th Jul 2026297 AMAQI
28th Jul 2026308 AMAQI
28th Jul 2026329 AMAQI
28th Jul 20262310 AMAQI
28th Jul 20262511 AMAQI
28th Jul 20262512 PMAQI
28th Jul 2026271 PMAQI
28th Jul 2026422 PMAQI
28th Jul 2026423 PMAQI
28th Jul 2026464 PMAQI
28th Jul 2026425 PMAQI
28th Jul 2026406 PMAQI
28th Jul 2026447 PMAQI
28th Jul 2026408 PMAQI
28th Jul 2026449 PMAQI
28th Jul 20264910 PMAQI
28th Jul 20265611 PMAQI
29th Jul 20265312 AMAQI
29th Jul 2026571 AMAQI
29th Jul 2026602 AMAQI
29th Jul 2026583 AMAQI
29th Jul 2026534 AMAQI
29th Jul 2026505 AMAQI
29th Jul 2026566 AMAQI

24°C15/33°C

29th Jul 2026517 AMAQI
29th Jul 2026508 AMAQI
29th Jul 2026499 AMAQI
29th Jul 20264210 AMAQI
29th Jul 20264011 AMAQI
29th Jul 20263812 PMAQI
29th Jul 2026461 PMAQI
29th Jul 2026512 PMAQI
29th Jul 2026563 PMAQI
29th Jul 2026604 PMAQI
29th Jul 2026765 PMAQI
29th Jul 2026726 PMAQI
29th Jul 2026667 PMAQI
29th Jul 2026608 PMAQI
29th Jul 2026479 PMAQI
29th Jul 20264210 PMAQI
29th Jul 20264011 PMAQI
30th Jul 20263812 AMAQI
30th Jul 2026361 AMAQI
30th Jul 2026342 AMAQI
30th Jul 2026293 AMAQI
30th Jul 2026334 AMAQI
30th Jul 2026425 AMAQI
30th Jul 2026386 AMAQI

23°C19/29°C

30th Jul 2026427 AMAQI
30th Jul 2026528 AMAQI
30th Jul 2026549 AMAQI
30th Jul 20265610 AMAQI
30th Jul 20265511 AMAQI
30th Jul 20265112 PMAQI
30th Jul 2026421 PMAQI
30th Jul 2026382 PMAQI
30th Jul 2026333 PMAQI
30th Jul 2026384 PMAQI
30th Jul 2026525 PMAQI
30th Jul 2026566 PMAQI
30th Jul 2026577 PMAQI
30th Jul 2026388 PMAQI
30th Jul 2026389 PMAQI
30th Jul 20263810 PMAQI
30th Jul 20262911 PMAQI
31st Jul 20262712 AMAQI
31st Jul 2026291 AMAQI
31st Jul 2026292 AMAQI
31st Jul 2026313 AMAQI
31st Jul 2026334 AMAQI
31st Jul 2026315 AMAQI
31st Jul 2026296 AMAQI

21°C17/26°C

31st Jul 2026337 AMAQI
31st Jul 2026318 AMAQI
31st Jul 2026339 AMAQI
31st Jul 20262910 AMAQI
31st Jul 20262711 AMAQI
31st Jul 20262512 PMAQI
31st Jul 2026231 PMAQI
31st Jul 2026322 PMAQI
31st Jul 2026313 PMAQI
31st Jul 2026314 PMAQI
31st Jul 2026295 PMAQI
31st Jul 2026296 PMAQI
31st Jul 2026317 PMAQI
31st Jul 2026338 PMAQI
31st Jul 2026319 PMAQI
31st Jul 20263410 PMAQI
31st Jul 20264011 PMAQI
1st Aug 20264212 AMAQI
1st Aug 2026401 AMAQI
1st Aug 2026442 AMAQI
1st Aug 2026463 AMAQI
1st Aug 2026514 AMAQI
1st Aug 2026425 AMAQI
1st Aug 2026406 AMAQI

20°C18/24°C

1st Aug 2026367 AMAQI
1st Aug 2026338 AMAQI
1st Aug 2026349 AMAQI
1st Aug 20263410 AMAQI
1st Aug 20263411 AMAQI
1st Aug 20262912 PMAQI
1st Aug 2026251 PMAQI
1st Aug 2026252 PMAQI
1st Aug 2026293 PMAQI
1st Aug 2026274 PMAQI
1st Aug 2026275 PMAQI
1st Aug 2026256 PMAQI
1st Aug 2026277 PMAQI
1st Aug 2026258 PMAQI
1st Aug 2026259 PMAQI
1st Aug 20262510 PMAQI
1st Aug 20262911 PMAQI
2nd Aug 20263312 AMAQI
2nd Aug 2026381 AMAQI
2nd Aug 2026312 AMAQI
2nd Aug 2026313 AMAQI
2nd Aug 2026314 AMAQI
2nd Aug 2026335 AMAQI
2nd Aug 2026406 AMAQI

19°C18/23°C

2nd Aug 2026407 AMAQI
2nd Aug 2026408 AMAQI
2nd Aug 2026409 AMAQI
2nd Aug 20263110 AMAQI
2nd Aug 20263611 AMAQI
2nd Aug 20263812 PMAQI
2nd Aug 2026441 PMAQI
2nd Aug 2026482 PMAQI
2nd Aug 2026463 PMAQI
2nd Aug 2026444 PMAQI
2nd Aug 2026405 PMAQI
2nd Aug 2026366 PMAQI
2nd Aug 2026257 PMAQI
2nd Aug 2026258 PMAQI
2nd Aug 2026259 PMAQI
2nd Aug 20262710 PMAQI
2nd Aug 20263611 PMAQI
3rd Aug 20263812 AMAQI
3rd Aug 2026291 AMAQI
3rd Aug 2026292 AMAQI
3rd Aug 2026333 AMAQI
3rd Aug 2026364 AMAQI
3rd Aug 2026385 AMAQI
3rd Aug 2026316 AMAQI

21°C16/26°C

3rd Aug 2026297 AMAQI
3rd Aug 2026318 AMAQI
3rd Aug 2026299 AMAQI
3rd Aug 20262910 AMAQI
3rd Aug 20262911 AMAQI
3rd Aug 20264012 PMAQI
3rd Aug 2026501 PMAQI
3rd Aug 2026512 PMAQI
3rd Aug 2026463 PMAQI
3rd Aug 2026494 PMAQI
3rd Aug 2026535 PMAQI
3rd Aug 2026556 PMAQI
3rd Aug 2026547 PMAQI
3rd Aug 2026528 PMAQI
3rd Aug 2026519 PMAQI
3rd Aug 20265310 PMAQI
3rd Aug 20265211 PMAQI
4th Aug 20264812 AMAQI
4th Aug 2026501 AMAQI
4th Aug 2026482 AMAQI
4th Aug 2026463 AMAQI
4th Aug 2026484 AMAQI
4th Aug 2026485 AMAQI
4th Aug 2026426 AMAQI

21°C17/27°C

4th Aug 2026447 AMAQI
4th Aug 2026448 AMAQI
4th Aug 2026489 AMAQI
4th Aug 20265210 AMAQI
4th Aug 20264811 AMAQI
4th Aug 20264812 PMAQI
4th Aug 2026491 PMAQI
4th Aug 2026442 PMAQI
4th Aug 2026383 PMAQI
4th Aug 2026424 PMAQI
4th Aug 2026445 PMAQI
4th Aug 2026406 PMAQI
4th Aug 2026387 PMAQI
4th Aug 2026388 PMAQI
4th Aug 2026389 PMAQI
4th Aug 20265010 PMAQI
4th Aug 20263811 PMAQI
5th Aug 20263812 AMAQI
5th Aug 2026461 AMAQI
5th Aug 2026442 AMAQI
5th Aug 2026463 AMAQI
5th Aug 2026464 AMAQI
5th Aug 2026445 AMAQI
5th Aug 2026486 AMAQI

21°C17/26°C

5th Aug 2026467 AMAQI
5th Aug 2026468 AMAQI
5th Aug 2026389 AMAQI
5th Aug 20264410 AMAQI
5th Aug 20264011 AMAQI
5th Aug 20264012 PMAQI
5th Aug 2026421 PMAQI
5th Aug 2026382 PMAQI
5th Aug 2026363 PMAQI
5th Aug 2026364 PMAQI
5th Aug 2026295 PMAQI
5th Aug 2026346 PMAQI
5th Aug 2026317 PMAQI
5th Aug 2026278 PMAQI
5th Aug 2026279 PMAQI
5th Aug 20262110 PMAQI
5th Aug 20262111 PMAQI
6th Aug 20262112 AMAQI
6th Aug 2026311 AMAQI
6th Aug 2026292 AMAQI
6th Aug 2026273 AMAQI
6th Aug 2026294 AMAQI
6th Aug 2026255 AMAQI
6th Aug 2026256 AMAQI

19°C17/21°C

6th Aug 2026237 AMAQI
6th Aug 2026278 AMAQI
6th Aug 2026219 AMAQI
6th Aug 20262710 AMAQI
6th Aug 20262511 AMAQI
6th Aug 20262312 PMAQI
6th Aug 2026271 PMAQI
6th Aug 2026292 PMAQI
6th Aug 2026253 PMAQI
6th Aug 2026294 PMAQI
6th Aug 2026335 PMAQI
6th Aug 2026256 PMAQI
6th Aug 2026297 PMAQI
6th Aug 2026258 PMAQI
6th Aug 2026319 PMAQI
6th Aug 20263610 PMAQI
6th Aug 20263611 PMAQI
7th Aug 20263812 AMAQI
7th Aug 2026231 AMAQI
7th Aug 2026212 AMAQI
7th Aug 2026213 AMAQI
7th Aug 2026234 AMAQI
7th Aug 2026385 AMAQI
7th Aug 2026486 AMAQI

20°C18/23°C

7th Aug 2026427 AMAQI
7th Aug 2026448 AMAQI
7th Aug 2026409 AMAQI
7th Aug 20263110 AMAQI
7th Aug 20262911 AMAQI
7th Aug 20262912 PMAQI
7th Aug 2026251 PMAQI
7th Aug 2026252 PMAQI
7th Aug 2026313 PMAQI
7th Aug 2026314 PMAQI
7th Aug 2026335 PMAQI
7th Aug 2026316 PMAQI
7th Aug 2026257 PMAQI
7th Aug 2026388 PMAQI
7th Aug 2026449 PMAQI
7th Aug 20263610 PMAQI
7th Aug 20263411 PMAQI
8th Aug 20262512 AMAQI
8th Aug 2026271 AMAQI
8th Aug 2026402 AMAQI
8th Aug 2026483 AMAQI
8th Aug 2026444 AMAQI
8th Aug 2026495 AMAQI
8th Aug 2026526 AMAQI

20°C16/26°C

8th Aug 2026537 AMAQI
8th Aug 2026548 AMAQI
8th Aug 2026499 AMAQI
8th Aug 20264610 AMAQI
8th Aug 20264011 AMAQI
8th Aug 20263812 PMAQI
8th Aug 2026291 PMAQI
8th Aug 2026312 PMAQI
8th Aug 2026273 PMAQI
8th Aug 2026364 PMAQI
8th Aug 2026405 PMAQI
8th Aug 2026426 PMAQI
8th Aug 2026517 PMAQI
8th Aug 2026558 PMAQI
8th Aug 2026559 PMAQI
8th Aug 20264510 PMAQI
8th Aug 20264211 PMAQI
9th Aug 20265012 AMAQI
9th Aug 2026561 AMAQI
9th Aug 2026472 AMAQI
9th Aug 2026443 AMAQI
9th Aug 2026444 AMAQI
9th Aug 2026465 AMAQI
9th Aug 2026466 AMAQI

22°C17/29°C

9th Aug 2026507 AMAQI
9th Aug 2026508 AMAQI
9th Aug 2026489 AMAQI
9th Aug 20264810 AMAQI
9th Aug 20264811 AMAQI
9th Aug 20264912 PMAQI
9th Aug 2026461 PMAQI
9th Aug 2026422 PMAQI
9th Aug 2026423 PMAQI
9th Aug 2026444 PMAQI
9th Aug 2026485 PMAQI
9th Aug 2026516 PMAQI
9th Aug 2026487 PMAQI
9th Aug 2026488 PMAQI
9th Aug 2026429 PMAQI
9th Aug 20264210 PMAQI
9th Aug 20264411 PMAQI
10th Aug 20264012 AMAQI
10th Aug 2026441 AMAQI
10th Aug 2026402 AMAQI
10th Aug 2026363 AMAQI
10th Aug 2026364 AMAQI
10th Aug 2026385 AMAQI
10th Aug 2026446 AMAQI

21°C19/25°C

10th Aug 2026407 AMAQI
10th Aug 2026348 AMAQI
10th Aug 2026299 AMAQI
10th Aug 20262910 AMAQI
10th Aug 20263311 AMAQI
10th Aug 20263112 PMAQI
10th Aug 2026291 PMAQI
10th Aug 2026332 PMAQI
10th Aug 2026343 PMAQI
10th Aug 2026294 PMAQI
10th Aug 2026315 PMAQI
10th Aug 2026346 PMAQI
10th Aug 2026407 PMAQI
10th Aug 2026428 PMAQI
10th Aug 2026389 PMAQI
10th Aug 20263610 PMAQI
10th Aug 20264411 PMAQI
11th Aug 20264212 AMAQI
11th Aug 2026381 AMAQI
11th Aug 2026462 AMAQI
11th Aug 2026513 AMAQI
11th Aug 2026514 AMAQI
11th Aug 2026425 AMAQI
11th Aug 2026506 AMAQI

21°C18/26°C

11th Aug 2026507 AMAQI
11th Aug 2026468 AMAQI
11th Aug 2026449 AMAQI
11th Aug 20264210 AMAQI
11th Aug 20264211 AMAQI
11th Aug 20263812 PMAQI
11th Aug 2026461 PMAQI
11th Aug 2026462 PMAQI
11th Aug 2026483 PMAQI
11th Aug 2026514 PMAQI
11th Aug 2026535 PMAQI
11th Aug 2026536 PMAQI
11th Aug 2026537 PMAQI
11th Aug 2026518 PMAQI
11th Aug 2026509 PMAQI
11th Aug 20265110 PMAQI
11th Aug 20264811 PMAQI
12th Aug 20264412 AMAQI
12th Aug 2026441 AMAQI
12th Aug 2026462 AMAQI
12th Aug 2026483 AMAQI
12th Aug 2026464 AMAQI
12th Aug 2026505 AMAQI
12th Aug 2026576 AMAQI

22°C18/29°C

12th Aug 2026547 AMAQI
12th Aug 2026688 AMAQI
12th Aug 2026719 AMAQI
12th Aug 20266910 AMAQI
12th Aug 20267311 AMAQI
12th Aug 20266912 PMAQI
12th Aug 2026661 PMAQI
12th Aug 2026652 PMAQI
12th Aug 2026563 PMAQI
12th Aug 2026624 PMAQI
12th Aug 2026625 PMAQI
12th Aug 2026756 PMAQI
12th Aug 2026677 PMAQI
12th Aug 2026448 PMAQI
12th Aug 2026369 PMAQI
12th Aug 20263610 PMAQI
12th Aug 20263311 PMAQI
13th Aug 20263112 AMAQI
13th Aug 2026401 AMAQI
13th Aug 2026332 AMAQI
13th Aug 2026383 AMAQI
13th Aug 2026384 AMAQI
13th Aug 2026515 AMAQI
13th Aug 2026666 AMAQI

24°C19/31°C

13th Aug 2026637 AMAQI
13th Aug 2026638 AMAQI
13th Aug 2026679 AMAQI
13th Aug 20265510 AMAQI
13th Aug 20265511 AMAQI
13th Aug 20265412 PMAQI
13th Aug 2026571 PMAQI
13th Aug 2026622 PMAQI
13th Aug 2026653 PMAQI
13th Aug 2026714 PMAQI
13th Aug 2026845 PMAQI
13th Aug 2026786 PMAQI
13th Aug 2026677 PMAQI
13th Aug 2026528 PMAQI
13th Aug 2026449 PMAQI
13th Aug 20264610 PMAQI
13th Aug 20265111 PMAQI
14th Aug 20265212 AMAQI
14th Aug 2026491 AMAQI
14th Aug 2026442 AMAQI
14th Aug 2026513 AMAQI
14th Aug 2026524 AMAQI
14th Aug 2026425 AMAQI
14th Aug 2026486 AMAQI

24°C20/31°C

14th Aug 2026447 AMAQI
14th Aug 2026498 AMAQI
14th Aug 2026539 AMAQI
14th Aug 20265110 AMAQI
14th Aug 20265111 AMAQI
14th Aug 20265112 PMAQI
14th Aug 2026501 PMAQI
14th Aug 2026542 PMAQI
14th Aug 2026573 PMAQI
14th Aug 2026584 PMAQI
14th Aug 2026505 PMAQI
14th Aug 2026486 PMAQI
14th Aug 2026507 PMAQI
14th Aug 2026448 PMAQI
14th Aug 2026429 PMAQI
14th Aug 20263810 PMAQI
14th Aug 20264011 PMAQI
15th Aug 20263312 AMAQI
15th Aug 2026331 AMAQI
15th Aug 2026382 AMAQI
15th Aug 2026403 AMAQI
15th Aug 2026334 AMAQI
15th Aug 2026365 AMAQI
15th Aug 2026336 AMAQI

23°C19/27°C

15th Aug 2026337 AMAQI
15th Aug 2026368 AMAQI
15th Aug 2026339 AMAQI
15th Aug 20263110 AMAQI
15th Aug 20262311 AMAQI
15th Aug 20262512 PMAQI
15th Aug 2026231 PMAQI
15th Aug 2026252 PMAQI
15th Aug 2026233 PMAQI
15th Aug 2026254 PMAQI
15th Aug 2026275 PMAQI
15th Aug 2026276 PMAQI
15th Aug 2026297 PMAQI
15th Aug 2026338 PMAQI
15th Aug 2026389 PMAQI
15th Aug 20263310 PMAQI
15th Aug 20263611 PMAQI
16th Aug 20263112 AMAQI
16th Aug 2026291 AMAQI
16th Aug 2026292 AMAQI
16th Aug 2026333 AMAQI
16th Aug 2026404 AMAQI
16th Aug 2026425 AMAQI
16th Aug 2026296 AMAQI

21°C19/25°C

16th Aug 2026277 AMAQI
7 AM
16th Aug 2026238 AMAQI
16th Aug 2026279 AMAQI
16th Aug 20262910 AMAQI
16th Aug 20262311 AMAQI
16th Aug 20262512 PMAQI
16th Aug 2026231 PMAQI
16th Aug 2026252 PMAQI
2 PM
16th Aug 2026293 PMAQI
16th Aug 2026274 PMAQI
16th Aug 2026275 PMAQI
16th Aug 2026486 PMAQI
16th Aug 2026497 PMAQI
16th Aug 2026318 PMAQI
16th Aug 2026299 PMAQI
9 PM
16th Aug 20262910 PMAQI
16th Aug 20262311 PMAQI
2 AM
6 AM

22°C19/26°C

Day time
Avg. Highest Time
7 AM - 9 AM

44AQI

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

38AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 9 AM (Avg. 44), while the lowest AQI was between 8 PM to 9 PM (Avg. 38).
Night time
Avg. Highest Time
6 AM

45AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
10 PM - 11 PM

39AQI

2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 6 AM (Avg. 45), while the lowest AQI was between 10 PM to 11 PM (Avg. 39).

2026 Days Vs Air Quality

Zalla, Portugalete, Basque Country, Spain

2026

87%

194

13%

30

Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)

Good
194 Days
Moderate
30 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 87%

Health Risk Level:

Low

In 2026, 87% of 228 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 2026

AQI (US)
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 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
43AQI (US)
2nd January 2026
50AQI (US)
3rd January 2026
36AQI (US)
4th January 2026
25AQI (US)
5th January 2026
44AQI (US)
6th January 2026
27AQI (US)
7th January 2026
38AQI (US)
8th January 2026
28AQI (US)
9th January 2026
18AQI (US)
10th January 2026
22AQI (US)
11th January 2026
26AQI (US)
12th January 2026
13AQI (US)
13th January 2026
24AQI (US)
14th January 2026
34AQI (US)
15th January 2026
32AQI (US)
16th January 2026
23AQI (US)
17th January 2026
45AQI (US)
18th January 2026
28AQI (US)
19th January 2026
27AQI (US)
20th January 2026
20AQI (US)
21st January 2026
17AQI (US)
22nd January 2026
35AQI (US)
23rd January 2026
48AQI (US)
24th January 2026
29AQI (US)
25th January 2026
38AQI (US)
26th January 2026
34AQI (US)
27th January 2026
26AQI (US)
28th January 2026
18AQI (US)
29th January 2026
29AQI (US)
30th January 2026
47AQI (US)
31st January 2026
32AQI (US)
1st February 2026
30AQI (US)
2nd February 2026
16AQI (US)
3rd February 2026
26AQI (US)
4th February 2026
17AQI (US)
5th February 2026
32AQI (US)
6th February 2026
31AQI (US)
7th February 2026
38AQI (US)
8th February 2026
42AQI (US)
9th February 2026
33AQI (US)
10th February 2026
31AQI (US)
11th February 2026
24AQI (US)
12th February 2026
30AQI (US)
13th February 2026
29AQI (US)
14th February 2026
34AQI (US)
15th February 2026
25AQI (US)
16th February 2026
22AQI (US)
17th February 2026
30AQI (US)
18th February 2026
28AQI (US)
19th February 2026
29AQI (US)
20th February 2026
31AQI (US)
21st February 2026
26AQI (US)
22nd February 2026
45AQI (US)
23rd February 2026
58AQI (US)
24th February 2026
44AQI (US)
25th February 2026
52AQI (US)
26th February 2026
51AQI (US)
27th February 2026
52AQI (US)
28th February 2026
13AQI (US)
1st March 2026
30AQI (US)
2nd March 2026
48AQI (US)
3rd March 2026
39AQI (US)
4th March 2026
53AQI (US)
5th March 2026
70AQI (US)
6th March 2026
13AQI (US)
7th March 2026
14AQI (US)
8th March 2026
33AQI (US)
9th March 2026
31AQI (US)
10th March 2026
21AQI (US)
11th March 2026
36AQI (US)
12th March 2026
32AQI (US)
13th March 2026
33AQI (US)
14th March 2026
17AQI (US)
15th March 2026
19AQI (US)
16th March 2026
26AQI (US)
17th March 2026
34AQI (US)
18th March 2026
39AQI (US)
19th March 2026
39AQI (US)
20th March 2026
30AQI (US)
21st March 2026
40AQI (US)
22nd March 2026
57AQI (US)
23rd March 2026
54AQI (US)
24th March 2026
48AQI (US)
25th March 2026
38AQI (US)
26th March 2026
12AQI (US)
27th March 2026
16AQI (US)
28th March 2026
21AQI (US)
29th March 2026
21AQI (US)
30th March 2026
19AQI (US)
31st March 2026
32AQI (US)
1st April 2026
26AQI (US)
2nd April 2026
16AQI (US)
3rd April 2026
26AQI (US)
4th April 2026
28AQI (US)
5th April 2026
34AQI (US)
6th April 2026
28AQI (US)
7th April 2026
29AQI (US)
8th April 2026
40AQI (US)
9th April 2026
46AQI (US)
10th April 2026
53AQI (US)
11th April 2026
38AQI (US)
12th April 2026
12AQI (US)
13th April 2026
14AQI (US)
14th April 2026
17AQI (US)
15th April 2026
27AQI (US)
16th April 2026
26AQI (US)
17th April 2026
18th April 2026
23AQI (US)
19th April 2026
21AQI (US)
20th April 2026
43AQI (US)
21st April 2026
51AQI (US)
22nd April 2026
23rd April 2026
30AQI (US)
24th April 2026
24AQI (US)
25th April 2026
22AQI (US)
26th April 2026
24AQI (US)
27th April 2026
37AQI (US)
28th April 2026
44AQI (US)
29th April 2026
46AQI (US)
30th April 2026
29AQI (US)
1st May 2026
36AQI (US)
2nd May 2026
21AQI (US)
3rd May 2026
16AQI (US)
4th May 2026
21AQI (US)
5th May 2026
25AQI (US)
6th May 2026
27AQI (US)
7th May 2026
20AQI (US)
8th May 2026
16AQI (US)
9th May 2026
10th May 2026
22AQI (US)
11th May 2026
20AQI (US)
12th May 2026
23AQI (US)
13th May 2026
19AQI (US)
14th May 2026
17AQI (US)
15th May 2026
20AQI (US)
16th May 2026
36AQI (US)
17th May 2026
36AQI (US)
18th May 2026
39AQI (US)
19th May 2026
39AQI (US)
20th May 2026
41AQI (US)
21st May 2026
39AQI (US)
22nd May 2026
46AQI (US)
23rd May 2026
43AQI (US)
24th May 2026
43AQI (US)
25th May 2026
38AQI (US)
26th May 2026
27AQI (US)
27th May 2026
46AQI (US)
28th May 2026
60AQI (US)
29th May 2026
71AQI (US)
30th May 2026
50AQI (US)
31st May 2026
28AQI (US)
1st June 2026
18AQI (US)
2nd June 2026
22AQI (US)
3rd June 2026
13AQI (US)
4th June 2026
14AQI (US)
5th June 2026
14AQI (US)
6th June 2026
20AQI (US)
7th June 2026
20AQI (US)
8th June 2026
19AQI (US)
9th June 2026
10AQI (US)
10th June 2026
11AQI (US)
11th June 2026
23AQI (US)
12th June 2026
20AQI (US)
13th June 2026
21AQI (US)
14th June 2026
34AQI (US)
15th June 2026
60AQI (US)
16th June 2026
30AQI (US)
17th June 2026
41AQI (US)
18th June 2026
44AQI (US)
19th June 2026
53AQI (US)
20th June 2026
63AQI (US)
21st June 2026
57AQI (US)
22nd June 2026
52AQI (US)
23rd June 2026
75AQI (US)
24th June 2026
63AQI (US)
25th June 2026
62AQI (US)
26th June 2026
40AQI (US)
27th June 2026
62AQI (US)
28th June 2026
23AQI (US)
29th June 2026
17AQI (US)
30th June 2026
14AQI (US)
1st July 2026
15AQI (US)
2nd July 2026
19AQI (US)
3rd July 2026
15AQI (US)
4th July 2026
10AQI (US)
5th July 2026
28AQI (US)
6th July 2026
42AQI (US)
7th July 2026
55AQI (US)
8th July 2026
74AQI (US)
9th July 2026
58AQI (US)
10th July 2026
60AQI (US)
11th July 2026
31AQI (US)
12th July 2026
44AQI (US)
13th July 2026
35AQI (US)
14th July 2026
29AQI (US)
15th July 2026
25AQI (US)
16th July 2026
29AQI (US)
17th July 2026
34AQI (US)
18th July 2026
39AQI (US)
19th July 2026
46AQI (US)
20th July 2026
54AQI (US)
21st July 2026
29AQI (US)
22nd July 2026
38AQI (US)
23rd July 2026
48AQI (US)
24th July 2026
75AQI (US)
25th July 2026
35AQI (US)
26th July 2026
22AQI (US)
27th July 2026
27AQI (US)
28th July 2026
35AQI (US)
29th July 2026
53AQI (US)
30th July 2026
42AQI (US)
31st July 2026
30AQI (US)
1st August 2026
33AQI (US)
2nd August 2026
36AQI (US)
3rd August 2026
41AQI (US)
4th August 2026
45AQI (US)
5th August 2026
38AQI (US)
6th August 2026
27AQI (US)
7th August 2026
32AQI (US)
8th August 2026
42AQI (US)
9th August 2026
47AQI (US)
10th August 2026
36AQI (US)
11th August 2026
47AQI (US)
12th August 2026
56AQI (US)
13th August 2026
55AQI (US)
14th August 2026
49AQI (US)
15th August 2026
31AQI (US)
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026

31AQI (US)

33AQI (US)

33AQI (US)

31AQI (US)

33AQI (US)

34AQI (US)

38AQI (US)

41AQI (US)

No. of days

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

202634AQI (US)

31
24
4
27
4
26
2
28
2
21
9
24
7
13
2
194
30

Highest AQI (US) recorded in

August

41AQI (US)

Lowest AQI (US) recorded in

April

31AQI (US)

202537AQI (US)

27
4
27
1
31
29
1
31
17
13
30
1
23
8
27
3
14
17
30
25
6
311
54

Highest AQI (US) recorded in

October

50AQI (US)

Lowest AQI (US) recorded in

April

28AQI (US)

202437AQI (US)

23
7
23
6
28
3
29
1
29
2
23
7
25
6
28
3
27
3
30
1
27
3
27
4
319
46

Highest AQI (US) recorded in

July

43AQI (US)

Lowest AQI (US) recorded in

October

28AQI (US)

202337AQI (US)

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 (US) recorded in

June

43AQI (US)

Lowest AQI (US) recorded in

January

27AQI (US)

202237AQI (US)

19
10
19
2
26
4
1
30
28
3
25
4
10
9
3
1
28
23
8
28
31
268
40
4

Highest AQI (US) recorded in

July

60AQI (US)

Lowest AQI (US) recorded in

November

24AQI (US)

202135AQI (US)

27
2
25
3
27
4
27
3
30
1
25
5
29
2
31
27
3
31
30
28
3
337
26

Highest AQI (US) recorded in

March

41AQI (US)

Lowest AQI (US) recorded in

November

29AQI (US)

202032AQI (US)

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

Highest AQI (US) recorded in

March

45AQI (US)

Lowest AQI (US) recorded in

December

25AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
37AQI (US)
Least Polluted Year Recorded
2020(Avg.)
32AQI (US)

Zalla's annual 2026 AQI (US) (34) shows an average percentage change of -4.8% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (35), 2022 (37), 2023 (37), 2024 (37), 2025 (37).