Country Background
HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Bilbao, 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+

September Air Quality Analysis

Bilbao, Basque Country, Spain

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
5th Sep 2023
75AQI
Lowest AQI recorded on
12th Sep 2024
18AQI

Same Day Analysis (29th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 35 of Good air quality, showing improvement over 2025 and 2023 on the same day.

Day & Night AQI Trend: 28th Sep - 29th Sep 2026

Bilbao, Basque Country, Spain

AQI
Day
Night
.

7 AM28th Sep 2026

8 PM

6 AM29th Sep 2026

Day time
Avg. Highest Time
12PM28th Sep

64AQI

Avg. Lowest Time
4PM28th Sep

52AQI

Night time
Avg. Highest Time
8PM28th Sep

55AQI

Avg. Lowest Time
6AM29th Sep

28AQI

In the last 24 hours,

Bilbao's AQI reached its highest point of 64 at 12 PM during the Day, while the lowest point, 28, was recorded at 6 AM during the Night between 28th Sep and 29th Sep 2026.

Day & Night AQI Trend : Aug - Sep 2026

Bilbao, Basque Country, Spain

AugSep
31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th
Day
Night
31st Aug 2026317 AMAQI
31st Aug 2026358 AMAQI
31st Aug 2026299 AMAQI
31st Aug 20262710 AMAQI
31st Aug 20263311 AMAQI
31st Aug 20264112 PMAQI
31st Aug 2026401 PMAQI
31st Aug 2026402 PMAQI
31st Aug 2026393 PMAQI
31st Aug 2026404 PMAQI
31st Aug 2026435 PMAQI
31st Aug 2026396 PMAQI
31st Aug 2026377 PMAQI
31st Aug 2026398 PMAQI
31st Aug 2026389 PMAQI
31st Aug 20263910 PMAQI
31st Aug 20263411 PMAQI
1st Sep 20262112 AMAQI
1st Sep 2026241 AMAQI
1st Sep 2026222 AMAQI
1st Sep 2026233 AMAQI
1st Sep 2026254 AMAQI
1st Sep 2026315 AMAQI
1st Sep 2026336 AMAQI

18°C15/22°C

1st Sep 2026357 AMAQI
1st Sep 2026388 AMAQI
1st Sep 2026429 AMAQI
1st Sep 20264510 AMAQI
1st Sep 20264511 AMAQI
1st Sep 20264212 PMAQI
1st Sep 2026441 PMAQI
1st Sep 2026432 PMAQI
1st Sep 2026423 PMAQI
1st Sep 2026404 PMAQI
1st Sep 2026385 PMAQI
1st Sep 2026286 PMAQI
1st Sep 2026237 PMAQI
1st Sep 2026248 PMAQI
1st Sep 2026249 PMAQI
1st Sep 20262210 PMAQI
1st Sep 20262411 PMAQI
2nd Sep 20262412 AMAQI
2nd Sep 2026251 AMAQI
2nd Sep 2026252 AMAQI
2nd Sep 2026243 AMAQI
2nd Sep 2026254 AMAQI
2nd Sep 2026295 AMAQI
2nd Sep 2026366 AMAQI

18°C15/21°C

2nd Sep 2026417 AMAQI
2nd Sep 2026368 AMAQI
2nd Sep 2026339 AMAQI
2nd Sep 20263410 AMAQI
2nd Sep 20263911 AMAQI
2nd Sep 20264412 PMAQI
2nd Sep 2026431 PMAQI
2nd Sep 2026422 PMAQI
2nd Sep 2026433 PMAQI
2nd Sep 2026344 PMAQI
2nd Sep 2026335 PMAQI
2nd Sep 2026376 PMAQI
2nd Sep 2026317 PMAQI
2nd Sep 2026328 PMAQI
2nd Sep 2026399 PMAQI
2nd Sep 20264610 PMAQI
2nd Sep 20263711 PMAQI
3rd Sep 20262912 AMAQI
3rd Sep 2026251 AMAQI
3rd Sep 2026242 AMAQI
3rd Sep 2026233 AMAQI
3rd Sep 2026244 AMAQI
3rd Sep 2026245 AMAQI
3rd Sep 2026356 AMAQI

19°C16/24°C

3rd Sep 2026437 AMAQI
3rd Sep 2026398 AMAQI
3rd Sep 2026329 AMAQI
3rd Sep 20263310 AMAQI
3rd Sep 20263711 AMAQI
3rd Sep 20264112 PMAQI
3rd Sep 2026421 PMAQI
3rd Sep 2026422 PMAQI
3rd Sep 2026413 PMAQI
3rd Sep 2026394 PMAQI
3rd Sep 2026435 PMAQI
3rd Sep 2026506 PMAQI
3rd Sep 2026507 PMAQI
3rd Sep 2026518 PMAQI
3rd Sep 2026479 PMAQI
3rd Sep 20264610 PMAQI
3rd Sep 20264511 PMAQI
4th Sep 20264012 AMAQI
4th Sep 2026381 AMAQI
4th Sep 2026342 AMAQI
4th Sep 2026353 AMAQI
4th Sep 2026404 AMAQI
4th Sep 2026415 AMAQI
4th Sep 2026416 AMAQI

21°C16/28°C

4th Sep 2026427 AMAQI
4th Sep 2026408 AMAQI
4th Sep 2026439 AMAQI
4th Sep 20264510 AMAQI
4th Sep 20264611 AMAQI
4th Sep 20264612 PMAQI
4th Sep 2026491 PMAQI
4th Sep 2026512 PMAQI
4th Sep 2026513 PMAQI
4th Sep 2026514 PMAQI
4th Sep 2026535 PMAQI
4th Sep 2026556 PMAQI
4th Sep 2026587 PMAQI
4th Sep 2026588 PMAQI
4th Sep 2026579 PMAQI
4th Sep 20265310 PMAQI
4th Sep 20264811 PMAQI
5th Sep 20264312 AMAQI
5th Sep 2026441 AMAQI
5th Sep 2026442 AMAQI
5th Sep 2026453 AMAQI
5th Sep 2026484 AMAQI
5th Sep 2026505 AMAQI
5th Sep 2026526 AMAQI

23°C19/28°C

5th Sep 2026527 AMAQI
5th Sep 2026528 AMAQI
5th Sep 2026499 AMAQI
5th Sep 20265010 AMAQI
5th Sep 20265011 AMAQI
5th Sep 20265012 PMAQI
5th Sep 2026481 PMAQI
5th Sep 2026412 PMAQI
5th Sep 2026393 PMAQI
5th Sep 2026324 PMAQI
5th Sep 2026305 PMAQI
5th Sep 2026306 PMAQI
5th Sep 2026407 PMAQI
5th Sep 2026438 PMAQI
5th Sep 2026439 PMAQI
5th Sep 20264310 PMAQI
5th Sep 20264111 PMAQI
6th Sep 20264012 AMAQI
6th Sep 2026411 AMAQI
6th Sep 2026432 AMAQI
6th Sep 2026433 AMAQI
6th Sep 2026474 AMAQI
6th Sep 2026505 AMAQI
6th Sep 2026496 AMAQI

22°C17/28°C

6th Sep 2026477 AMAQI
6th Sep 2026458 AMAQI
6th Sep 2026459 AMAQI
6th Sep 20264710 AMAQI
6th Sep 20264511 AMAQI
6th Sep 20264512 PMAQI
6th Sep 2026431 PMAQI
6th Sep 2026462 PMAQI
6th Sep 2026503 PMAQI
6th Sep 2026534 PMAQI
6th Sep 2026545 PMAQI
6th Sep 2026506 PMAQI
6th Sep 2026467 PMAQI
6th Sep 2026498 PMAQI
6th Sep 2026489 PMAQI
6th Sep 20265110 PMAQI
6th Sep 20265411 PMAQI
7th Sep 20265212 AMAQI
7th Sep 2026521 AMAQI
7th Sep 2026502 AMAQI
7th Sep 2026513 AMAQI
7th Sep 2026514 AMAQI
7th Sep 2026525 AMAQI
7th Sep 2026536 AMAQI

25°C21/32°C

7th Sep 2026537 AMAQI
7th Sep 2026528 AMAQI
7th Sep 2026529 AMAQI
7th Sep 20265410 AMAQI
7th Sep 20265511 AMAQI
7th Sep 20265512 PMAQI
7th Sep 2026481 PMAQI
7th Sep 2026462 PMAQI
7th Sep 2026543 PMAQI
7th Sep 2026484 PMAQI
7th Sep 2026475 PMAQI
7th Sep 2026456 PMAQI
7th Sep 2026447 PMAQI
7th Sep 2026428 PMAQI
7th Sep 2026439 PMAQI
7th Sep 20263910 PMAQI
7th Sep 20263411 PMAQI
8th Sep 20263012 AMAQI
8th Sep 2026321 AMAQI
8th Sep 2026262 AMAQI
8th Sep 2026273 AMAQI
8th Sep 2026264 AMAQI
8th Sep 2026355 AMAQI
8th Sep 2026376 AMAQI

20°C17/25°C

8th Sep 2026427 AMAQI
8th Sep 2026508 AMAQI
8th Sep 2026579 AMAQI
8th Sep 20266110 AMAQI
8th Sep 20266111 AMAQI
8th Sep 20266012 PMAQI
8th Sep 2026541 PMAQI
8th Sep 2026532 PMAQI
8th Sep 2026483 PMAQI
8th Sep 2026474 PMAQI
8th Sep 2026455 PMAQI
8th Sep 2026386 PMAQI
8th Sep 2026367 PMAQI
8th Sep 2026348 PMAQI
8th Sep 2026239 PMAQI
8th Sep 20262210 PMAQI
8th Sep 20262411 PMAQI
9th Sep 20262212 AMAQI
9th Sep 2026231 AMAQI
9th Sep 2026252 AMAQI
9th Sep 2026263 AMAQI
9th Sep 2026274 AMAQI
9th Sep 2026245 AMAQI
9th Sep 2026196 AMAQI

19°C16/24°C

9th Sep 2026227 AMAQI
9th Sep 2026218 AMAQI
9th Sep 2026229 AMAQI
9th Sep 20262010 AMAQI
9th Sep 20261911 AMAQI
9th Sep 20262512 PMAQI
9th Sep 2026201 PMAQI
9th Sep 2026182 PMAQI
9th Sep 2026223 PMAQI
9th Sep 2026214 PMAQI
9th Sep 2026275 PMAQI
9th Sep 2026306 PMAQI
9th Sep 2026287 PMAQI
9th Sep 2026288 PMAQI
9th Sep 2026319 PMAQI
9th Sep 20262510 PMAQI
9th Sep 20262711 PMAQI
10th Sep 20262212 AMAQI
10th Sep 2026241 AMAQI
10th Sep 2026232 AMAQI
10th Sep 2026233 AMAQI
10th Sep 2026234 AMAQI
10th Sep 2026235 AMAQI
10th Sep 2026246 AMAQI

16°C15/19°C

10th Sep 2026257 AMAQI
10th Sep 2026248 AMAQI
10th Sep 2026259 AMAQI
10th Sep 20262810 AMAQI
10th Sep 20263411 AMAQI
10th Sep 20263912 PMAQI
10th Sep 2026411 PMAQI
10th Sep 2026412 PMAQI
10th Sep 2026383 PMAQI
10th Sep 2026294 PMAQI
10th Sep 2026245 PMAQI
10th Sep 2026246 PMAQI
10th Sep 2026327 PMAQI
10th Sep 2026308 PMAQI
10th Sep 2026419 PMAQI
10th Sep 20264610 PMAQI
10th Sep 20263211 PMAQI
11th Sep 20262112 AMAQI
11th Sep 2026241 AMAQI
11th Sep 2026272 AMAQI
11th Sep 2026263 AMAQI
11th Sep 2026274 AMAQI
11th Sep 2026325 AMAQI
11th Sep 2026386 AMAQI

16°C13/21°C

11th Sep 2026387 AMAQI
11th Sep 2026388 AMAQI
11th Sep 2026399 AMAQI
11th Sep 20264410 AMAQI
11th Sep 20264911 AMAQI
11th Sep 20264512 PMAQI
11th Sep 2026421 PMAQI
11th Sep 2026402 PMAQI
11th Sep 2026393 PMAQI
11th Sep 2026404 PMAQI
11th Sep 2026415 PMAQI
11th Sep 2026406 PMAQI
11th Sep 2026277 PMAQI
11th Sep 2026288 PMAQI
11th Sep 2026339 PMAQI
11th Sep 20262610 PMAQI
11th Sep 20262611 PMAQI
12th Sep 20262512 AMAQI
12th Sep 2026221 AMAQI
12th Sep 2026272 AMAQI
12th Sep 2026253 AMAQI
12th Sep 2026234 AMAQI
12th Sep 2026265 AMAQI
12th Sep 2026266 AMAQI

17°C13/21°C

12th Sep 2026267 AMAQI
12th Sep 2026268 AMAQI
12th Sep 2026259 AMAQI
12th Sep 20262310 AMAQI
12th Sep 20262511 AMAQI
12th Sep 20262712 PMAQI
12th Sep 2026291 PMAQI
12th Sep 2026252 PMAQI
12th Sep 2026323 PMAQI
12th Sep 2026384 PMAQI
12th Sep 2026375 PMAQI
12th Sep 2026226 PMAQI
12th Sep 2026287 PMAQI
12th Sep 2026248 PMAQI
12th Sep 2026389 PMAQI
12th Sep 20263111 PMAQI
13th Sep 20263012 AMAQI
13th Sep 2026321 AMAQI
13th Sep 2026352 AMAQI
13th Sep 2026443 AMAQI
13th Sep 2026304 AMAQI
13th Sep 2026315 AMAQI
13th Sep 2026316 AMAQI

18°C13/23°C

13th Sep 2026297 AMAQI
13th Sep 2026308 AMAQI
13th Sep 2026269 AMAQI
13th Sep 20262710 AMAQI
13th Sep 20263011 AMAQI
13th Sep 20263412 PMAQI
13th Sep 2026311 PMAQI
13th Sep 2026332 PMAQI
13th Sep 2026253 PMAQI
13th Sep 2026264 PMAQI
13th Sep 2026395 PMAQI
13th Sep 2026496 PMAQI
13th Sep 2026427 PMAQI
13th Sep 2026318 PMAQI
13th Sep 2026389 PMAQI
13th Sep 20265010 PMAQI
13th Sep 20264511 PMAQI
14th Sep 20264212 AMAQI
14th Sep 2026391 AMAQI
14th Sep 2026332 AMAQI
14th Sep 2026353 AMAQI
14th Sep 2026354 AMAQI
14th Sep 2026355 AMAQI
14th Sep 2026436 AMAQI

20°C15/26°C

14th Sep 2026497 AMAQI
14th Sep 2026498 AMAQI
14th Sep 2026529 AMAQI
14th Sep 20265510 AMAQI
14th Sep 20265011 AMAQI
14th Sep 20264712 PMAQI
14th Sep 2026451 PMAQI
14th Sep 2026412 PMAQI
14th Sep 2026373 PMAQI
14th Sep 2026374 PMAQI
14th Sep 2026425 PMAQI
14th Sep 2026396 PMAQI
14th Sep 2026357 PMAQI
14th Sep 2026378 PMAQI
14th Sep 2026429 PMAQI
14th Sep 20263810 PMAQI
14th Sep 20263911 PMAQI
15th Sep 20263612 AMAQI
15th Sep 2026381 AMAQI
15th Sep 2026442 AMAQI
15th Sep 2026473 AMAQI
15th Sep 2026464 AMAQI
15th Sep 2026505 AMAQI
15th Sep 2026506 AMAQI

22°C18/29°C

15th Sep 2026497 AMAQI
15th Sep 2026478 AMAQI
15th Sep 2026489 AMAQI
15th Sep 20264910 AMAQI
15th Sep 20265111 AMAQI
15th Sep 20265212 PMAQI
15th Sep 2026551 PMAQI
15th Sep 2026532 PMAQI
15th Sep 2026513 PMAQI
15th Sep 2026514 PMAQI
15th Sep 2026495 PMAQI
15th Sep 2026476 PMAQI
15th Sep 2026447 PMAQI
15th Sep 2026398 PMAQI
15th Sep 2026339 PMAQI
15th Sep 20262710 PMAQI
15th Sep 20262311 PMAQI
16th Sep 20262612 AMAQI
16th Sep 2026231 AMAQI
16th Sep 2026242 AMAQI
16th Sep 2026323 AMAQI
16th Sep 2026254 AMAQI
16th Sep 2026265 AMAQI
16th Sep 2026256 AMAQI

21°C17/25°C

16th Sep 2026287 AMAQI
16th Sep 2026298 AMAQI
16th Sep 2026259 AMAQI
16th Sep 20262310 AMAQI
16th Sep 20262611 AMAQI
16th Sep 20262512 PMAQI
16th Sep 2026241 PMAQI
16th Sep 2026262 PMAQI
16th Sep 2026243 PMAQI
16th Sep 2026254 PMAQI
16th Sep 2026305 PMAQI
16th Sep 2026346 PMAQI
16th Sep 2026377 PMAQI
16th Sep 2026288 PMAQI
16th Sep 2026299 PMAQI
16th Sep 20262910 PMAQI
16th Sep 20262611 PMAQI
17th Sep 20263312 AMAQI
17th Sep 2026251 AMAQI
17th Sep 2026222 AMAQI
17th Sep 2026253 AMAQI
17th Sep 2026234 AMAQI
17th Sep 2026235 AMAQI
17th Sep 2026246 AMAQI

16°C15/19°C

17th Sep 2026287 AMAQI
17th Sep 2026288 AMAQI
17th Sep 2026309 AMAQI
17th Sep 20263110 AMAQI
17th Sep 20263511 AMAQI
17th Sep 20263612 PMAQI
17th Sep 2026421 PMAQI
17th Sep 2026412 PMAQI
17th Sep 2026393 PMAQI
17th Sep 2026414 PMAQI
17th Sep 2026405 PMAQI
17th Sep 2026316 PMAQI
17th Sep 2026337 PMAQI
17th Sep 2026388 PMAQI
17th Sep 2026339 PMAQI
17th Sep 20262910 PMAQI
17th Sep 20263011 PMAQI
18th Sep 20262812 AMAQI
18th Sep 2026251 AMAQI
18th Sep 2026242 AMAQI
18th Sep 2026243 AMAQI
18th Sep 2026264 AMAQI
18th Sep 2026255 AMAQI
18th Sep 2026276 AMAQI

16°C14/18°C

18th Sep 2026337 AMAQI
18th Sep 2026358 AMAQI
18th Sep 2026349 AMAQI
18th Sep 20263810 AMAQI
18th Sep 20263911 AMAQI
18th Sep 20263112 PMAQI
18th Sep 2026271 PMAQI
18th Sep 2026242 PMAQI
18th Sep 2026243 PMAQI
18th Sep 2026244 PMAQI
18th Sep 2026435 PMAQI
18th Sep 2026356 PMAQI
18th Sep 2026247 PMAQI
18th Sep 2026298 PMAQI
18th Sep 2026349 PMAQI
18th Sep 20264410 PMAQI
18th Sep 20263911 PMAQI
19th Sep 20264112 AMAQI
19th Sep 2026451 AMAQI
19th Sep 2026402 AMAQI
19th Sep 2026393 AMAQI
19th Sep 2026324 AMAQI
19th Sep 2026275 AMAQI
19th Sep 2026376 AMAQI

15°C13/17°C

19th Sep 2026387 AMAQI
19th Sep 2026378 AMAQI
19th Sep 2026369 AMAQI
19th Sep 20263510 AMAQI
19th Sep 20263611 AMAQI
19th Sep 20264112 PMAQI
19th Sep 2026391 PMAQI
19th Sep 2026292 PMAQI
19th Sep 2026253 PMAQI
19th Sep 2026234 PMAQI
19th Sep 2026255 PMAQI
19th Sep 2026326 PMAQI
19th Sep 2026377 PMAQI
19th Sep 2026398 PMAQI
19th Sep 2026399 PMAQI
19th Sep 20264310 PMAQI
19th Sep 20264011 PMAQI
20th Sep 20263612 AMAQI
20th Sep 2026361 AMAQI
20th Sep 2026382 AMAQI
20th Sep 2026393 AMAQI
20th Sep 2026404 AMAQI
20th Sep 2026405 AMAQI
20th Sep 2026406 AMAQI

17°C13/22°C

20th Sep 2026437 AMAQI
20th Sep 2026418 AMAQI
20th Sep 2026399 AMAQI
20th Sep 20263910 AMAQI
20th Sep 20263911 AMAQI
20th Sep 20263912 PMAQI
20th Sep 2026371 PMAQI
20th Sep 2026362 PMAQI
20th Sep 2026363 PMAQI
20th Sep 2026364 PMAQI
20th Sep 2026375 PMAQI
20th Sep 2026396 PMAQI
20th Sep 2026397 PMAQI
20th Sep 2026378 PMAQI
20th Sep 2026299 PMAQI
20th Sep 20262510 PMAQI
20th Sep 20262811 PMAQI
21st Sep 20262512 AMAQI
21st Sep 2026261 AMAQI
21st Sep 2026252 AMAQI
21st Sep 2026273 AMAQI
21st Sep 2026264 AMAQI
21st Sep 2026275 AMAQI
21st Sep 2026276 AMAQI

18°C15/22°C

21st Sep 2026307 AMAQI
21st Sep 2026298 AMAQI
21st Sep 2026349 AMAQI
21st Sep 20264510 AMAQI
21st Sep 20265111 AMAQI
21st Sep 20265112 PMAQI
21st Sep 2026511 PMAQI
21st Sep 2026502 PMAQI
21st Sep 2026493 PMAQI
21st Sep 2026414 PMAQI
21st Sep 2026415 PMAQI
21st Sep 2026496 PMAQI
21st Sep 2026527 PMAQI
21st Sep 2026468 PMAQI
21st Sep 2026459 PMAQI
21st Sep 20265210 PMAQI
21st Sep 20263711 PMAQI
22nd Sep 20263712 AMAQI
22nd Sep 2026401 AMAQI
22nd Sep 2026422 AMAQI
22nd Sep 2026403 AMAQI
22nd Sep 2026324 AMAQI
22nd Sep 2026385 AMAQI
22nd Sep 2026426 AMAQI

19°C16/24°C

22nd Sep 2026427 AMAQI
22nd Sep 2026408 AMAQI
22nd Sep 2026419 AMAQI
22nd Sep 20264110 AMAQI
22nd Sep 20264911 AMAQI
22nd Sep 20264412 PMAQI
22nd Sep 2026451 PMAQI
22nd Sep 2026442 PMAQI
22nd Sep 2026423 PMAQI
22nd Sep 2026384 PMAQI
22nd Sep 2026465 PMAQI
22nd Sep 2026486 PMAQI
22nd Sep 2026407 PMAQI
22nd Sep 2026398 PMAQI
22nd Sep 2026409 PMAQI
22nd Sep 20263210 PMAQI
22nd Sep 20263311 PMAQI
23rd Sep 20263412 AMAQI
23rd Sep 2026361 AMAQI
23rd Sep 2026352 AMAQI
23rd Sep 2026373 AMAQI
23rd Sep 2026354 AMAQI
23rd Sep 2026365 AMAQI
23rd Sep 2026406 AMAQI

19°C17/23°C

23rd Sep 2026397 AMAQI
23rd Sep 2026378 AMAQI
23rd Sep 2026409 AMAQI
23rd Sep 20264010 AMAQI
23rd Sep 20264411 AMAQI
23rd Sep 20264812 PMAQI
23rd Sep 2026511 PMAQI
23rd Sep 2026522 PMAQI
23rd Sep 2026493 PMAQI
23rd Sep 2026464 PMAQI
23rd Sep 2026525 PMAQI
23rd Sep 2026476 PMAQI
23rd Sep 2026417 PMAQI
23rd Sep 2026378 PMAQI
23rd Sep 2026409 PMAQI
23rd Sep 20263910 PMAQI
23rd Sep 20263211 PMAQI
24th Sep 20262912 AMAQI
24th Sep 2026331 AMAQI
24th Sep 2026342 AMAQI
24th Sep 2026353 AMAQI
24th Sep 2026394 AMAQI
24th Sep 2026515 AMAQI
24th Sep 2026356 AMAQI

19°C16/24°C

24th Sep 2026347 AMAQI
24th Sep 2026358 AMAQI
24th Sep 2026329 AMAQI
24th Sep 20263910 AMAQI
24th Sep 20264311 AMAQI
24th Sep 20264412 PMAQI
24th Sep 2026501 PMAQI
24th Sep 2026492 PMAQI
24th Sep 2026523 PMAQI
24th Sep 2026564 PMAQI
24th Sep 2026535 PMAQI
24th Sep 2026496 PMAQI
24th Sep 2026477 PMAQI
24th Sep 2026518 PMAQI
24th Sep 2026519 PMAQI
24th Sep 20265310 PMAQI
24th Sep 20265211 PMAQI
25th Sep 20265412 AMAQI
25th Sep 2026551 AMAQI
25th Sep 2026562 AMAQI
25th Sep 2026553 AMAQI
25th Sep 2026564 AMAQI
25th Sep 2026575 AMAQI
25th Sep 2026566 AMAQI

23°C18/32°C

25th Sep 2026557 AMAQI
25th Sep 2026578 AMAQI
25th Sep 2026589 AMAQI
25th Sep 20265810 AMAQI
25th Sep 20266111 AMAQI
25th Sep 20266312 PMAQI
25th Sep 2026621 PMAQI
25th Sep 2026622 PMAQI
25th Sep 2026613 PMAQI
25th Sep 2026594 PMAQI
25th Sep 2026555 PMAQI
25th Sep 2026556 PMAQI
25th Sep 2026527 PMAQI
25th Sep 2026508 PMAQI
25th Sep 2026469 PMAQI
25th Sep 20264410 PMAQI
25th Sep 20263811 PMAQI
26th Sep 20263512 AMAQI
26th Sep 2026351 AMAQI
26th Sep 2026342 AMAQI
26th Sep 2026363 AMAQI
26th Sep 2026384 AMAQI
26th Sep 2026395 AMAQI
26th Sep 2026396 AMAQI

19°C16/22°C

26th Sep 2026387 AMAQI
26th Sep 2026368 AMAQI
26th Sep 2026369 AMAQI
26th Sep 20263810 AMAQI
26th Sep 20264111 AMAQI
26th Sep 20264012 PMAQI
26th Sep 2026371 PMAQI
26th Sep 2026302 PMAQI
26th Sep 2026253 PMAQI
26th Sep 2026244 PMAQI
26th Sep 2026245 PMAQI
26th Sep 2026246 PMAQI
26th Sep 2026237 PMAQI
26th Sep 2026278 PMAQI
26th Sep 2026299 PMAQI
26th Sep 20262710 PMAQI
26th Sep 20262811 PMAQI
27th Sep 20262712 AMAQI
27th Sep 2026261 AMAQI
27th Sep 2026282 AMAQI
27th Sep 2026283 AMAQI
27th Sep 2026274 AMAQI
27th Sep 2026255 AMAQI
27th Sep 2026266 AMAQI

18°C15/23°C

27th Sep 2026277 AMAQI
27th Sep 2026298 AMAQI
27th Sep 2026329 AMAQI
27th Sep 20263210 AMAQI
27th Sep 20263311 AMAQI
27th Sep 20263712 PMAQI
27th Sep 2026401 PMAQI
27th Sep 2026402 PMAQI
27th Sep 2026423 PMAQI
27th Sep 2026434 PMAQI
27th Sep 2026475 PMAQI
27th Sep 2026476 PMAQI
27th Sep 2026497 PMAQI
27th Sep 2026498 PMAQI
27th Sep 2026489 PMAQI
27th Sep 20264910 PMAQI
27th Sep 20264711 PMAQI
28th Sep 20264712 AMAQI
28th Sep 2026441 AMAQI
28th Sep 2026432 AMAQI
28th Sep 2026433 AMAQI
28th Sep 2026434 AMAQI
28th Sep 2026445 AMAQI
28th Sep 2026486 AMAQI

19°C17/25°C

28th Sep 2026527 AMAQI
28th Sep 2026538 AMAQI
28th Sep 2026549 AMAQI
28th Sep 20265610 AMAQI
28th Sep 20265811 AMAQI
28th Sep 20266412 PMAQI
28th Sep 2026631 PMAQI
28th Sep 2026602 PMAQI
28th Sep 2026553 PMAQI
28th Sep 2026524 PMAQI
28th Sep 2026565 PMAQI
28th Sep 2026606 PMAQI
28th Sep 2026577 PMAQI
28th Sep 2026558 PMAQI
28th Sep 2026549 PMAQI
28th Sep 20265110 PMAQI
28th Sep 20264411 PMAQI
29th Sep 20263712 AMAQI
29th Sep 2026321 AMAQI
29th Sep 2026332 AMAQI
29th Sep 2026393 AMAQI
29th Sep 2026464 AMAQI
29th Sep 2026355 AMAQI
29th Sep 2026286 AMAQI

21°C16/27°C

29th Sep 2026297 AMAQI
7 AM
29th Sep 2026278 AMAQI
29th Sep 2026249 AMAQI
29th Sep 20262510 AMAQI
29th Sep 20263011 AMAQI
29th Sep 20263012 PMAQI
29th Sep 2026301 PMAQI
1 PM
29th Sep 2026302 PMAQI
29th Sep 2026343 PMAQI
29th Sep 2026394 PMAQI
29th Sep 2026425 PMAQI
29th Sep 2026376 PMAQI
29th Sep 2026387 PMAQI
29th Sep 2026428 PMAQI
8 PM
29th Sep 2026459 PMAQI
29th Sep 20264510 PMAQI
29th Sep 20264611 PMAQI
1 AM
6 AM

23°C18/30°C

Day time
Avg. Highest Time
11 AM - 8 PM

41AQI

10 hours / Day
300 hours / Month
Avg. Lowest Time
7 AM - 10 AM

38AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 8 PM (Avg. 41), while the lowest AQI was between 7 AM to 10 AM (Avg. 38).
Night time
Avg. Highest Time
9 PM - 10 PM

39AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
12 AM - 2 AM

33AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 10 PM (Avg. 39), while the lowest AQI was between 12 AM to 2 AM (Avg. 33).

2026 Days Vs Air Quality

Bilbao, Basque Country, Spain

2026

90%

241

10%

28

Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)

Good
241 Days
Moderate
28 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 90%

Health Risk Level:

Very Low

In 2026, 90% of 272 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

Bilbao, 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
41AQI (US)
2nd January 2026
33AQI (US)
3rd January 2026
27AQI (US)
4th January 2026
25AQI (US)
5th January 2026
34AQI (US)
6th January 2026
24AQI (US)
7th January 2026
25AQI (US)
8th January 2026
18AQI (US)
9th January 2026
20AQI (US)
10th January 2026
19AQI (US)
11th January 2026
24AQI (US)
12th January 2026
14AQI (US)
13th January 2026
17AQI (US)
14th January 2026
20AQI (US)
15th January 2026
23AQI (US)
16th January 2026
19AQI (US)
17th January 2026
38AQI (US)
18th January 2026
19AQI (US)
19th January 2026
24AQI (US)
20th January 2026
27AQI (US)
21st January 2026
15AQI (US)
22nd January 2026
30AQI (US)
23rd January 2026
43AQI (US)
24th January 2026
30AQI (US)
25th January 2026
39AQI (US)
26th January 2026
38AQI (US)
27th January 2026
31AQI (US)
28th January 2026
11AQI (US)
29th January 2026
22AQI (US)
30th January 2026
25AQI (US)
31st January 2026
15AQI (US)
1st February 2026
25AQI (US)
2nd February 2026
11AQI (US)
3rd February 2026
24AQI (US)
4th February 2026
22AQI (US)
5th February 2026
37AQI (US)
6th February 2026
30AQI (US)
7th February 2026
31AQI (US)
8th February 2026
34AQI (US)
9th February 2026
37AQI (US)
10th February 2026
35AQI (US)
11th February 2026
29AQI (US)
12th February 2026
29AQI (US)
13th February 2026
19AQI (US)
14th February 2026
29AQI (US)
15th February 2026
18AQI (US)
16th February 2026
13AQI (US)
17th February 2026
37AQI (US)
18th February 2026
36AQI (US)
19th February 2026
35AQI (US)
20th February 2026
34AQI (US)
21st February 2026
26AQI (US)
22nd February 2026
35AQI (US)
23rd February 2026
56AQI (US)
24th February 2026
29AQI (US)
25th February 2026
43AQI (US)
26th February 2026
57AQI (US)
27th February 2026
55AQI (US)
28th February 2026
17AQI (US)
1st March 2026
31AQI (US)
2nd March 2026
48AQI (US)
3rd March 2026
39AQI (US)
4th March 2026
56AQI (US)
5th March 2026
67AQI (US)
6th March 2026
11AQI (US)
7th March 2026
14AQI (US)
8th March 2026
31AQI (US)
9th March 2026
32AQI (US)
10th March 2026
26AQI (US)
11th March 2026
40AQI (US)
12th March 2026
32AQI (US)
13th March 2026
27AQI (US)
14th March 2026
11AQI (US)
15th March 2026
21AQI (US)
16th March 2026
33AQI (US)
17th March 2026
32AQI (US)
18th March 2026
35AQI (US)
19th March 2026
29AQI (US)
20th March 2026
33AQI (US)
21st March 2026
40AQI (US)
22nd March 2026
65AQI (US)
23rd March 2026
62AQI (US)
24th March 2026
59AQI (US)
25th March 2026
47AQI (US)
26th March 2026
15AQI (US)
27th March 2026
21AQI (US)
28th March 2026
32AQI (US)
29th March 2026
25AQI (US)
30th March 2026
24AQI (US)
31st March 2026
27AQI (US)
1st April 2026
18AQI (US)
2nd April 2026
9AQI (US)
3rd April 2026
26AQI (US)
4th April 2026
27AQI (US)
5th April 2026
34AQI (US)
6th April 2026
27AQI (US)
7th April 2026
25AQI (US)
8th April 2026
40AQI (US)
9th April 2026
48AQI (US)
10th April 2026
58AQI (US)
11th April 2026
38AQI (US)
12th April 2026
17AQI (US)
13th April 2026
15AQI (US)
14th April 2026
22AQI (US)
15th April 2026
30AQI (US)
16th April 2026
29AQI (US)
17th April 2026
18th April 2026
24AQI (US)
19th April 2026
27AQI (US)
20th April 2026
56AQI (US)
21st April 2026
51AQI (US)
22nd April 2026
23rd April 2026
31AQI (US)
24th April 2026
24AQI (US)
25th April 2026
38AQI (US)
26th April 2026
47AQI (US)
27th April 2026
33AQI (US)
28th April 2026
46AQI (US)
29th April 2026
44AQI (US)
30th April 2026
19AQI (US)
1st May 2026
31AQI (US)
2nd May 2026
21AQI (US)
3rd May 2026
17AQI (US)
4th May 2026
20AQI (US)
5th May 2026
28AQI (US)
6th May 2026
26AQI (US)
7th May 2026
27AQI (US)
8th May 2026
22AQI (US)
9th May 2026
10th May 2026
24AQI (US)
11th May 2026
22AQI (US)
12th May 2026
27AQI (US)
13th May 2026
13AQI (US)
14th May 2026
18AQI (US)
15th May 2026
27AQI (US)
16th May 2026
36AQI (US)
17th May 2026
35AQI (US)
18th May 2026
38AQI (US)
19th May 2026
39AQI (US)
20th May 2026
41AQI (US)
21st May 2026
38AQI (US)
22nd May 2026
46AQI (US)
23rd May 2026
43AQI (US)
24th May 2026
43AQI (US)
25th May 2026
38AQI (US)
26th May 2026
29AQI (US)
27th May 2026
50AQI (US)
28th May 2026
60AQI (US)
29th May 2026
63AQI (US)
30th May 2026
34AQI (US)
31st May 2026
21AQI (US)
1st June 2026
20AQI (US)
2nd June 2026
26AQI (US)
3rd June 2026
19AQI (US)
4th June 2026
20AQI (US)
5th June 2026
20AQI (US)
6th June 2026
21AQI (US)
7th June 2026
21AQI (US)
8th June 2026
21AQI (US)
9th June 2026
12AQI (US)
10th June 2026
12AQI (US)
11th June 2026
22AQI (US)
12th June 2026
24AQI (US)
13th June 2026
24AQI (US)
14th June 2026
35AQI (US)
15th June 2026
46AQI (US)
16th June 2026
36AQI (US)
17th June 2026
45AQI (US)
18th June 2026
41AQI (US)
19th June 2026
62AQI (US)
20th June 2026
51AQI (US)
21st June 2026
48AQI (US)
22nd June 2026
55AQI (US)
23rd June 2026
68AQI (US)
24th June 2026
66AQI (US)
25th June 2026
57AQI (US)
26th June 2026
42AQI (US)
27th June 2026
51AQI (US)
28th June 2026
19AQI (US)
29th June 2026
15AQI (US)
30th June 2026
21AQI (US)
1st July 2026
16AQI (US)
2nd July 2026
19AQI (US)
3rd July 2026
17AQI (US)
4th July 2026
13AQI (US)
5th July 2026
25AQI (US)
6th July 2026
36AQI (US)
7th July 2026
49AQI (US)
8th July 2026
59AQI (US)
9th July 2026
44AQI (US)
10th July 2026
43AQI (US)
11th July 2026
33AQI (US)
12th July 2026
43AQI (US)
13th July 2026
43AQI (US)
14th July 2026
35AQI (US)
15th July 2026
29AQI (US)
16th July 2026
31AQI (US)
17th July 2026
33AQI (US)
18th July 2026
37AQI (US)
19th July 2026
43AQI (US)
20th July 2026
53AQI (US)
21st July 2026
37AQI (US)
22nd July 2026
39AQI (US)
23rd July 2026
50AQI (US)
24th July 2026
77AQI (US)
25th July 2026
38AQI (US)
26th July 2026
28AQI (US)
27th July 2026
26AQI (US)
28th July 2026
37AQI (US)
29th July 2026
54AQI (US)
30th July 2026
44AQI (US)
31st July 2026
29AQI (US)
1st August 2026
32AQI (US)
2nd August 2026
30AQI (US)
3rd August 2026
40AQI (US)
4th August 2026
39AQI (US)
5th August 2026
35AQI (US)
6th August 2026
27AQI (US)
7th August 2026
34AQI (US)
8th August 2026
37AQI (US)
9th August 2026
49AQI (US)
10th August 2026
33AQI (US)
11th August 2026
41AQI (US)
12th August 2026
47AQI (US)
13th August 2026
51AQI (US)
14th August 2026
41AQI (US)
15th August 2026
30AQI (US)
16th August 2026
30AQI (US)
17th August 2026
26AQI (US)
18th August 2026
36AQI (US)
19th August 2026
51AQI (US)
20th August 2026
29AQI (US)
21st August 2026
24AQI (US)
22nd August 2026
29AQI (US)
23rd August 2026
39AQI (US)
24th August 2026
37AQI (US)
25th August 2026
29AQI (US)
26th August 2026
32AQI (US)
27th August 2026
33AQI (US)
28th August 2026
21AQI (US)
29th August 2026
30AQI (US)
30th August 2026
26AQI (US)
31st August 2026
35AQI (US)
1st September 2026
33AQI (US)
2nd September 2026
35AQI (US)
3rd September 2026
38AQI (US)
4th September 2026
46AQI (US)
5th September 2026
44AQI (US)
6th September 2026
47AQI (US)
7th September 2026
49AQI (US)
8th September 2026
40AQI (US)
9th September 2026
24AQI (US)
10th September 2026
30AQI (US)
11th September 2026
35AQI (US)
12th September 2026
27AQI (US)
13th September 2026
34AQI (US)
14th September 2026
41AQI (US)
15th September 2026
45AQI (US)
16th September 2026
27AQI (US)
17th September 2026
32AQI (US)
18th September 2026
31AQI (US)
19th September 2026
36AQI (US)
20th September 2026
37AQI (US)
21st September 2026
39AQI (US)
22nd September 2026
41AQI (US)
23rd September 2026
41AQI (US)
24th September 2026
44AQI (US)
25th September 2026
55AQI (US)
26th September 2026
33AQI (US)
27th September 2026
36AQI (US)
28th September 2026
52AQI (US)
29th September 2026
35AQI (US)
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

25AQI (US)

32AQI (US)

34AQI (US)

32AQI (US)

33AQI (US)

34AQI (US)

37AQI (US)

35AQI (US)

38AQI (US)

No. of days

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

202633AQI (US)

31
25
3
26
5
25
3
28
2
23
7
27
4
29
2
27
2
241
28

Highest AQI (US) recorded in

September

38AQI (US)

Lowest AQI (US) recorded in

January

25AQI (US)

202536AQI (US)

27
4
26
2
31
27
3
31
18
12
31
23
8
29
1
14
17
30
26
5
313
52

Highest AQI (US) recorded in

October

51AQI (US)

Lowest AQI (US) recorded in

September

29AQI (US)

202432AQI (US)

30
1
24
5
30
1
30
31
29
1
28
3
31
30
29
2
25
5
28
3
345
21

Highest AQI (US) recorded in

November

38AQI (US)

Lowest AQI (US) recorded in

May

27AQI (US)

202333AQI (US)

31
20
8
27
4
29
1
27
4
25
5
31
30
1
27
3
25
6
29
31
332
32

Highest AQI (US) recorded in

February

45AQI (US)

Lowest AQI (US) recorded in

December

24AQI (US)

202241AQI (US)

16
14
11
11
21
9
1
20
10
24
7
21
9
17
6
3
5
28
1
23
8
30
31
247
75
4

Highest AQI (US) recorded in

July

56AQI (US)

Lowest AQI (US) recorded in

November

25AQI (US)

202141AQI (US)

26
4
23
5
16
15
21
9
28
3
23
7
27
4
30
1
19
11
26
5
28
2
28
3
295
69

Highest AQI (US) recorded in

March

52AQI (US)

Lowest AQI (US) recorded in

December

34AQI (US)

202035AQI (US)

9
4
21
14
4
26
4
29
2
31
23
7
30
1
23
6
30
1
236
29

Highest AQI (US) recorded in

March

45AQI (US)

Lowest AQI (US) recorded in

December

27AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2022(Avg.)
41AQI (US)
Least Polluted Year Recorded
2024(Avg.)
32AQI (US)

Bilbao's annual 2026 AQI (US) (33) shows an average percentage change of -8.3% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (41), 2022 (41), 2023 (33), 2024 (32), 2025 (36).