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HistoryAQIPM₂.₅PM₁₀COSO₂NO₂O₃

Castro Urdiales, Cantabria, 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+

July Air Quality Analysis

Castro Urdiales, Cantabria, Spain

2022
2023
2024
2025
2026
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
24th Jul 2026
68AQI
Lowest AQI recorded on
1st Jul 2026
10AQI

Same Day Analysis (29th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 54 of Moderate air quality on the same day.

Day & Night AQI Trend: 29th Jul - 30th Jul 2026

Castro Urdiales, Cantabria, Spain

AQI
Day
Night
.

6 AM29th Jul 2026

9 PM

5 AM30th Jul 2026

Day time
Avg. Highest Time
5PM29th Jul

67AQI

Avg. Lowest Time
7AM29th Jul

44AQI

Night time
Avg. Highest Time
10PM29th Jul

56AQI

Avg. Lowest Time
4AM30th Jul

36AQI

In the last 24 hours,

Castro Urdiales's AQI reached its highest point of 67 at 5 PM during the Day, while the lowest point, 36, was recorded at 4 AM during the Night between 29th Jul and 30th Jul 2026.

Day & Night AQI Trend : Jul 2026

Castro Urdiales, Cantabria, Spain

Jul
01st - 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 - 30th30th
Day
Night
1st Jul 202686 AMAQI
1st Jul 2026127 AMAQI
1st Jul 2026128 AMAQI
1st Jul 202699 AMAQI
1st Jul 2026810 AMAQI
1st Jul 2026811 AMAQI
1st Jul 20261212 PMAQI
1st Jul 2026121 PMAQI
1st Jul 2026122 PMAQI
1st Jul 2026123 PMAQI
1st Jul 2026144 PMAQI
1st Jul 2026145 PMAQI
1st Jul 2026116 PMAQI
1st Jul 2026137 PMAQI
1st Jul 2026108 PMAQI
1st Jul 2026149 PMAQI
1st Jul 20261110 PMAQI
1st Jul 20261211 PMAQI
2nd Jul 20262012 AMAQI
2nd Jul 2026131 AMAQI
2nd Jul 2026182 AMAQI
2nd Jul 202693 AMAQI
2nd Jul 2026104 AMAQI
2nd Jul 202685 AMAQI

17°C10/23°C

2nd Jul 2026126 AMAQI
2nd Jul 202687 AMAQI
2nd Jul 2026148 AMAQI
2nd Jul 2026179 AMAQI
2nd Jul 20262210 AMAQI
2nd Jul 20262111 AMAQI
2nd Jul 20261812 PMAQI
2nd Jul 2026101 PMAQI
2nd Jul 2026182 PMAQI
2nd Jul 2026223 PMAQI
2nd Jul 2026184 PMAQI
2nd Jul 2026225 PMAQI
2nd Jul 2026226 PMAQI
2nd Jul 2026237 PMAQI
2nd Jul 2026148 PMAQI
2nd Jul 2026229 PMAQI
2nd Jul 20262310 PMAQI
2nd Jul 20262211 PMAQI
3rd Jul 20261912 AMAQI
3rd Jul 2026181 AMAQI
3rd Jul 2026182 AMAQI
3rd Jul 2026193 AMAQI
3rd Jul 2026144 AMAQI
3rd Jul 2026125 AMAQI

16°C8/24°C

3rd Jul 2026136 AMAQI
3rd Jul 2026247 AMAQI
3rd Jul 2026268 AMAQI
3rd Jul 2026249 AMAQI
3rd Jul 20262410 AMAQI
3rd Jul 20262211 AMAQI
3rd Jul 20261412 PMAQI
3rd Jul 2026151 PMAQI
3rd Jul 2026132 PMAQI
3rd Jul 2026143 PMAQI
3rd Jul 2026114 PMAQI
3rd Jul 2026145 PMAQI
3rd Jul 202686 PMAQI
3rd Jul 2026127 PMAQI
3rd Jul 2026108 PMAQI
3rd Jul 2026129 PMAQI
3rd Jul 20261110 PMAQI
3rd Jul 2026911 PMAQI
4th Jul 20261212 AMAQI
4th Jul 202661 AMAQI
4th Jul 202682 AMAQI
4th Jul 202683 AMAQI
4th Jul 202684 AMAQI
4th Jul 2026145 AMAQI

18°C9/27°C

4th Jul 2026106 AMAQI
4th Jul 2026107 AMAQI
4th Jul 202698 AMAQI
4th Jul 2026149 AMAQI
4th Jul 20261210 AMAQI
4th Jul 2026811 AMAQI
4th Jul 20261112 PMAQI
4th Jul 202691 PMAQI
4th Jul 202692 PMAQI
4th Jul 2026103 PMAQI
4th Jul 2026104 PMAQI
4th Jul 2026125 PMAQI
4th Jul 2026146 PMAQI
4th Jul 2026117 PMAQI
4th Jul 2026118 PMAQI
4th Jul 2026149 PMAQI
4th Jul 20262010 PMAQI
4th Jul 20261811 PMAQI
5th Jul 20261312 AMAQI
5th Jul 2026161 AMAQI
5th Jul 2026172 AMAQI
5th Jul 2026183 AMAQI
5th Jul 2026384 AMAQI
5th Jul 2026505 AMAQI

19°C11/29°C

5th Jul 2026406 AMAQI
5th Jul 2026327 AMAQI
5th Jul 2026328 AMAQI
5th Jul 2026349 AMAQI
5th Jul 20263610 AMAQI
5th Jul 20263211 AMAQI
5th Jul 20262312 PMAQI
5th Jul 2026261 PMAQI
5th Jul 2026392 PMAQI
5th Jul 2026303 PMAQI
5th Jul 2026244 PMAQI
5th Jul 2026215 PMAQI
5th Jul 2026206 PMAQI
5th Jul 2026207 PMAQI
5th Jul 2026238 PMAQI
5th Jul 2026329 PMAQI
5th Jul 20263210 PMAQI
5th Jul 20263311 PMAQI
6th Jul 20264312 AMAQI
6th Jul 2026601 AMAQI
6th Jul 2026622 AMAQI
6th Jul 2026593 AMAQI
6th Jul 2026464 AMAQI
6th Jul 2026395 AMAQI

22°C12/34°C

6th Jul 2026476 AMAQI
6th Jul 2026487 AMAQI
6th Jul 2026478 AMAQI
6th Jul 2026329 AMAQI
6th Jul 20263210 AMAQI
6th Jul 20264611 AMAQI
6th Jul 20263212 PMAQI
6th Jul 2026301 PMAQI
6th Jul 2026312 PMAQI
6th Jul 2026373 PMAQI
6th Jul 2026344 PMAQI
6th Jul 2026365 PMAQI
6th Jul 2026406 PMAQI
6th Jul 2026407 PMAQI
6th Jul 2026308 PMAQI
6th Jul 2026399 PMAQI
6th Jul 20263510 PMAQI
6th Jul 20264011 PMAQI
7th Jul 20263812 AMAQI
7th Jul 2026441 AMAQI
7th Jul 2026532 AMAQI
7th Jul 2026463 AMAQI
7th Jul 2026564 AMAQI
7th Jul 2026465 AMAQI

26°C15/37°C

7th Jul 2026386 AMAQI
7th Jul 2026387 AMAQI
7th Jul 2026408 AMAQI
7th Jul 2026369 AMAQI
7th Jul 20263810 AMAQI
7th Jul 20264011 AMAQI
7th Jul 20263212 PMAQI
7th Jul 2026371 PMAQI
7th Jul 2026502 PMAQI
7th Jul 2026573 PMAQI
7th Jul 2026604 PMAQI
7th Jul 2026655 PMAQI
7th Jul 2026646 PMAQI
7th Jul 2026587 PMAQI
7th Jul 2026618 PMAQI
7th Jul 2026669 PMAQI
7th Jul 20266010 PMAQI
7th Jul 20264511 PMAQI
8th Jul 20265012 AMAQI
8th Jul 2026561 AMAQI
8th Jul 2026462 AMAQI
8th Jul 2026563 AMAQI
8th Jul 2026614 AMAQI
8th Jul 2026625 AMAQI

25°C16/38°C

8th Jul 2026546 AMAQI
8th Jul 2026707 AMAQI
8th Jul 2026668 AMAQI
8th Jul 2026709 AMAQI
8th Jul 20267210 AMAQI
8th Jul 20267411 AMAQI
8th Jul 20266612 PMAQI
8th Jul 2026691 PMAQI
8th Jul 2026722 PMAQI
8th Jul 2026703 PMAQI
8th Jul 2026674 PMAQI
8th Jul 2026625 PMAQI
8th Jul 2026596 PMAQI
8th Jul 2026587 PMAQI
8th Jul 2026628 PMAQI
8th Jul 2026609 PMAQI
8th Jul 20265610 PMAQI
8th Jul 20265411 PMAQI
9th Jul 20265612 AMAQI
9th Jul 2026551 AMAQI
9th Jul 2026572 AMAQI
9th Jul 2026543 AMAQI
9th Jul 2026544 AMAQI
9th Jul 2026535 AMAQI

22°C14/35°C

9th Jul 2026556 AMAQI
9th Jul 2026567 AMAQI
9th Jul 2026538 AMAQI
9th Jul 2026589 AMAQI
9th Jul 20264410 AMAQI
9th Jul 20265211 AMAQI
9th Jul 20264212 PMAQI
9th Jul 2026501 PMAQI
9th Jul 2026472 PMAQI
9th Jul 2026473 PMAQI
9th Jul 2026464 PMAQI
9th Jul 2026505 PMAQI
9th Jul 2026546 PMAQI
9th Jul 2026547 PMAQI
9th Jul 2026488 PMAQI
9th Jul 2026499 PMAQI
9th Jul 20264410 PMAQI
9th Jul 20264711 PMAQI
10th Jul 20264812 AMAQI
10th Jul 2026491 AMAQI
10th Jul 2026522 AMAQI
10th Jul 2026523 AMAQI
10th Jul 2026464 AMAQI
10th Jul 2026445 AMAQI

24°C14/37°C

10th Jul 2026446 AMAQI
10th Jul 2026467 AMAQI
10th Jul 2026448 AMAQI
10th Jul 2026469 AMAQI
10th Jul 20264810 AMAQI
10th Jul 20265011 AMAQI
10th Jul 20265012 PMAQI
10th Jul 2026501 PMAQI
10th Jul 2026552 PMAQI
10th Jul 2026603 PMAQI
10th Jul 2026564 PMAQI
10th Jul 2026545 PMAQI
10th Jul 2026426 PMAQI
10th Jul 2026407 PMAQI
10th Jul 2026618 PMAQI
10th Jul 2026629 PMAQI
10th Jul 20265610 PMAQI
10th Jul 20265511 PMAQI
11th Jul 20264412 AMAQI
11th Jul 2026401 AMAQI
11th Jul 2026422 AMAQI
11th Jul 2026363 AMAQI
11th Jul 2026334 AMAQI
11th Jul 2026355 AMAQI

23°C15/32°C

11th Jul 2026346 AMAQI
11th Jul 2026247 AMAQI
11th Jul 2026298 AMAQI
11th Jul 2026319 AMAQI
11th Jul 20263010 AMAQI
11th Jul 20263011 AMAQI
11th Jul 20262812 PMAQI
11th Jul 2026341 PMAQI
11th Jul 2026362 PMAQI
11th Jul 2026313 PMAQI
11th Jul 2026284 PMAQI
11th Jul 2026285 PMAQI
11th Jul 2026326 PMAQI
11th Jul 2026437 PMAQI
11th Jul 2026398 PMAQI
11th Jul 2026419 PMAQI
11th Jul 20264410 PMAQI
11th Jul 20264411 PMAQI
12th Jul 20263812 AMAQI
12th Jul 2026421 AMAQI
12th Jul 2026542 AMAQI
12th Jul 2026583 AMAQI
12th Jul 2026574 AMAQI
12th Jul 2026615 AMAQI

24°C14/35°C

12th Jul 2026486 AMAQI
12th Jul 2026547 AMAQI
12th Jul 2026508 AMAQI
12th Jul 2026429 AMAQI
12th Jul 20264010 AMAQI
12th Jul 20264811 AMAQI
12th Jul 20264112 PMAQI
12th Jul 2026361 PMAQI
12th Jul 2026382 PMAQI
12th Jul 2026393 PMAQI
12th Jul 2026364 PMAQI
12th Jul 2026405 PMAQI
12th Jul 2026416 PMAQI
12th Jul 2026407 PMAQI
12th Jul 2026418 PMAQI
12th Jul 2026389 PMAQI
12th Jul 20263810 PMAQI
12th Jul 20264011 PMAQI
13th Jul 20264012 AMAQI
13th Jul 2026311 AMAQI
13th Jul 2026302 AMAQI
13th Jul 2026253 AMAQI
13th Jul 2026324 AMAQI
13th Jul 2026305 AMAQI

24°C16/36°C

13th Jul 2026326 AMAQI
13th Jul 2026307 AMAQI
13th Jul 2026338 AMAQI
13th Jul 2026349 AMAQI
13th Jul 20263110 AMAQI
13th Jul 20263011 AMAQI
13th Jul 20263012 PMAQI
13th Jul 2026291 PMAQI
13th Jul 2026322 PMAQI
13th Jul 2026323 PMAQI
13th Jul 2026274 PMAQI
13th Jul 2026265 PMAQI
13th Jul 2026306 PMAQI
13th Jul 2026287 PMAQI
13th Jul 2026288 PMAQI
13th Jul 2026289 PMAQI
13th Jul 20262810 PMAQI
13th Jul 20263111 PMAQI
14th Jul 20263412 AMAQI
14th Jul 2026221 AMAQI
14th Jul 2026262 AMAQI
14th Jul 2026263 AMAQI
14th Jul 2026204 AMAQI
14th Jul 2026355 AMAQI

21°C12/31°C

14th Jul 2026266 AMAQI
14th Jul 2026307 AMAQI
14th Jul 2026328 AMAQI
14th Jul 2026359 AMAQI
14th Jul 20263110 AMAQI
14th Jul 20262611 AMAQI
14th Jul 20263012 PMAQI
14th Jul 2026321 PMAQI
14th Jul 2026342 PMAQI
14th Jul 2026243 PMAQI
14th Jul 2026294 PMAQI
14th Jul 2026205 PMAQI
14th Jul 2026256 PMAQI
14th Jul 2026267 PMAQI
14th Jul 2026188 PMAQI
14th Jul 2026129 PMAQI
14th Jul 20261310 PMAQI
14th Jul 20261311 PMAQI
15th Jul 20261612 AMAQI
15th Jul 2026181 AMAQI
15th Jul 2026192 AMAQI
15th Jul 2026163 AMAQI
15th Jul 2026154 AMAQI
15th Jul 2026205 AMAQI

22°C12/35°C

15th Jul 2026226 AMAQI
15th Jul 2026217 AMAQI
15th Jul 2026208 AMAQI
15th Jul 2026219 AMAQI
15th Jul 20262410 AMAQI
15th Jul 20262411 AMAQI
15th Jul 20262112 PMAQI
15th Jul 2026251 PMAQI
15th Jul 2026182 PMAQI
15th Jul 2026163 PMAQI
15th Jul 2026174 PMAQI
15th Jul 2026205 PMAQI
15th Jul 2026326 PMAQI
15th Jul 2026457 PMAQI
15th Jul 2026408 PMAQI
15th Jul 2026329 PMAQI
15th Jul 20263410 PMAQI
15th Jul 20262811 PMAQI
16th Jul 20263112 AMAQI
16th Jul 2026191 AMAQI
16th Jul 2026162 AMAQI
16th Jul 2026143 AMAQI
16th Jul 2026144 AMAQI
16th Jul 2026185 AMAQI

22°C13/33°C

16th Jul 2026146 AMAQI
16th Jul 2026157 AMAQI
16th Jul 2026168 AMAQI
16th Jul 2026249 AMAQI
16th Jul 20263210 AMAQI
16th Jul 20262611 AMAQI
16th Jul 20263112 PMAQI
16th Jul 2026401 PMAQI
16th Jul 2026192 PMAQI
16th Jul 2026223 PMAQI
16th Jul 2026244 PMAQI
16th Jul 2026235 PMAQI
16th Jul 2026196 PMAQI
16th Jul 2026207 PMAQI
16th Jul 2026278 PMAQI
16th Jul 2026289 PMAQI
16th Jul 20262810 PMAQI
16th Jul 20262811 PMAQI
17th Jul 20262012 AMAQI
17th Jul 2026161 AMAQI
17th Jul 2026202 AMAQI
17th Jul 2026173 AMAQI
17th Jul 2026144 AMAQI
17th Jul 2026175 AMAQI

22°C15/32°C

17th Jul 2026176 AMAQI
17th Jul 2026207 AMAQI
17th Jul 2026238 AMAQI
17th Jul 2026279 AMAQI
17th Jul 20262910 AMAQI
17th Jul 20264811 AMAQI
17th Jul 20264412 PMAQI
17th Jul 2026391 PMAQI
17th Jul 2026402 PMAQI
17th Jul 2026433 PMAQI
17th Jul 2026384 PMAQI
17th Jul 2026375 PMAQI
17th Jul 2026346 PMAQI
17th Jul 2026387 PMAQI
17th Jul 2026328 PMAQI
17th Jul 2026349 PMAQI
17th Jul 20263410 PMAQI
17th Jul 20263611 PMAQI
18th Jul 20263912 AMAQI
18th Jul 2026431 AMAQI
18th Jul 2026442 AMAQI
18th Jul 2026413 AMAQI
18th Jul 2026364 AMAQI
18th Jul 2026275 AMAQI

19°C11/29°C

18th Jul 2026286 AMAQI
18th Jul 2026307 AMAQI
18th Jul 2026298 AMAQI
18th Jul 2026369 AMAQI
18th Jul 20263610 AMAQI
18th Jul 20263211 AMAQI
18th Jul 20263712 PMAQI
18th Jul 2026281 PMAQI
18th Jul 2026262 PMAQI
18th Jul 2026253 PMAQI
18th Jul 2026244 PMAQI
18th Jul 2026255 PMAQI
18th Jul 2026316 PMAQI
18th Jul 2026357 PMAQI
18th Jul 2026368 PMAQI
18th Jul 2026399 PMAQI
18th Jul 20264010 PMAQI
18th Jul 20263011 PMAQI
19th Jul 20263612 AMAQI
19th Jul 2026461 AMAQI
19th Jul 2026422 AMAQI
19th Jul 2026413 AMAQI
19th Jul 2026404 AMAQI
19th Jul 2026445 AMAQI

19°C13/28°C

19th Jul 2026416 AMAQI
19th Jul 2026467 AMAQI
19th Jul 2026438 AMAQI
19th Jul 2026409 AMAQI
19th Jul 20263610 AMAQI
19th Jul 20263911 AMAQI
19th Jul 20264112 PMAQI
19th Jul 2026431 PMAQI
19th Jul 2026442 PMAQI
19th Jul 2026463 PMAQI
19th Jul 2026454 PMAQI
19th Jul 2026435 PMAQI
19th Jul 2026466 PMAQI
19th Jul 2026447 PMAQI
19th Jul 2026468 PMAQI
19th Jul 2026489 PMAQI
19th Jul 20265310 PMAQI
19th Jul 20265411 PMAQI
20th Jul 20265812 AMAQI
20th Jul 2026591 AMAQI
20th Jul 2026582 AMAQI
20th Jul 2026563 AMAQI
20th Jul 2026544 AMAQI
20th Jul 2026565 AMAQI

21°C12/33°C

20th Jul 2026596 AMAQI
20th Jul 2026607 AMAQI
20th Jul 2026608 AMAQI
20th Jul 2026599 AMAQI
20th Jul 20265810 AMAQI
20th Jul 20265811 AMAQI
20th Jul 20265812 PMAQI
20th Jul 2026561 PMAQI
20th Jul 2026402 PMAQI
20th Jul 2026553 PMAQI
20th Jul 2026444 PMAQI
20th Jul 2026435 PMAQI
20th Jul 2026476 PMAQI
20th Jul 2026297 PMAQI
20th Jul 2026298 PMAQI
20th Jul 2026289 PMAQI
20th Jul 20262910 PMAQI
20th Jul 20262911 PMAQI
21st Jul 20262912 AMAQI
21st Jul 2026261 AMAQI
21st Jul 2026262 AMAQI
21st Jul 2026283 AMAQI
21st Jul 2026294 AMAQI

22°C13/35°C

21st Jul 2026346 AMAQI
21st Jul 2026367 AMAQI
21st Jul 2026328 AMAQI
21st Jul 2026369 AMAQI
21st Jul 20263210 AMAQI
21st Jul 20263111 AMAQI
21st Jul 20264212 PMAQI
21st Jul 2026391 PMAQI
21st Jul 2026382 PMAQI
21st Jul 2026323 PMAQI
21st Jul 2026384 PMAQI
21st Jul 2026385 PMAQI
21st Jul 2026326 PMAQI
21st Jul 2026277 PMAQI
21st Jul 2026218 PMAQI
21st Jul 2026249 PMAQI
21st Jul 20262510 PMAQI
21st Jul 20262611 PMAQI
22nd Jul 20262812 AMAQI
22nd Jul 2026301 AMAQI
22nd Jul 2026312 AMAQI
22nd Jul 2026343 AMAQI
22nd Jul 2026344 AMAQI
22nd Jul 2026345 AMAQI

20°C12/30°C

22nd Jul 2026386 AMAQI
22nd Jul 2026367 AMAQI
22nd Jul 2026368 AMAQI
22nd Jul 2026349 AMAQI
22nd Jul 20264010 AMAQI
22nd Jul 20263611 AMAQI
22nd Jul 20263912 PMAQI
22nd Jul 2026311 PMAQI
22nd Jul 2026302 PMAQI
22nd Jul 2026323 PMAQI
22nd Jul 2026384 PMAQI
22nd Jul 2026345 PMAQI
22nd Jul 2026336 PMAQI
22nd Jul 2026327 PMAQI
22nd Jul 2026348 PMAQI
22nd Jul 2026319 PMAQI
22nd Jul 20263310 PMAQI
22nd Jul 20263611 PMAQI
23rd Jul 20263812 AMAQI
23rd Jul 2026381 AMAQI
23rd Jul 2026412 AMAQI
23rd Jul 2026443 AMAQI
23rd Jul 2026424 AMAQI
23rd Jul 2026385 AMAQI

23°C12/36°C

23rd Jul 2026386 AMAQI
23rd Jul 2026427 AMAQI
23rd Jul 2026448 AMAQI
23rd Jul 2026509 AMAQI
23rd Jul 20265010 AMAQI
23rd Jul 20264511 AMAQI
23rd Jul 20264512 PMAQI
23rd Jul 2026421 PMAQI
23rd Jul 2026412 PMAQI
23rd Jul 2026423 PMAQI
23rd Jul 2026454 PMAQI
23rd Jul 2026495 PMAQI
23rd Jul 2026536 PMAQI
23rd Jul 2026477 PMAQI
23rd Jul 2026438 PMAQI
23rd Jul 2026489 PMAQI
23rd Jul 20266210 PMAQI
23rd Jul 20266111 PMAQI
24th Jul 20268012 AMAQI
24th Jul 2026771 AMAQI
24th Jul 2026822 AMAQI
24th Jul 2026763 AMAQI
24th Jul 2026814 AMAQI
24th Jul 2026805 AMAQI

23°C13/36°C

24th Jul 2026816 AMAQI
24th Jul 2026827 AMAQI
24th Jul 2026798 AMAQI
24th Jul 2026789 AMAQI
24th Jul 20267410 AMAQI
24th Jul 20267711 AMAQI
24th Jul 20267712 PMAQI
24th Jul 2026721 PMAQI
24th Jul 2026632 PMAQI
24th Jul 2026623 PMAQI
24th Jul 2026604 PMAQI
24th Jul 2026565 PMAQI
24th Jul 2026526 PMAQI
24th Jul 2026507 PMAQI
24th Jul 2026488 PMAQI
24th Jul 2026509 PMAQI
24th Jul 20265210 PMAQI
24th Jul 20265211 PMAQI
25th Jul 20264812 AMAQI
25th Jul 2026441 AMAQI
25th Jul 2026412 AMAQI
25th Jul 2026413 AMAQI
25th Jul 2026404 AMAQI
25th Jul 2026395 AMAQI

22°C12/33°C

25th Jul 2026406 AMAQI
25th Jul 2026387 AMAQI
25th Jul 2026368 AMAQI
25th Jul 2026329 AMAQI
25th Jul 20263410 AMAQI
25th Jul 20262911 AMAQI
25th Jul 20262612 PMAQI
25th Jul 2026231 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026303 PMAQI
25th Jul 2026284 PMAQI
25th Jul 2026345 PMAQI
25th Jul 2026326 PMAQI
25th Jul 2026387 PMAQI
25th Jul 2026308 PMAQI
25th Jul 2026269 PMAQI
25th Jul 20262810 PMAQI
25th Jul 20262711 PMAQI
26th Jul 20263412 AMAQI
26th Jul 2026321 AMAQI
26th Jul 2026282 AMAQI
26th Jul 2026253 AMAQI
26th Jul 2026244 AMAQI
26th Jul 2026265 AMAQI

16°C10/22°C

26th Jul 2026346 AMAQI
26th Jul 2026297 AMAQI
26th Jul 2026278 AMAQI
26th Jul 2026249 AMAQI
26th Jul 20262310 AMAQI
26th Jul 20262211 AMAQI
26th Jul 20262212 PMAQI
26th Jul 2026301 PMAQI
26th Jul 2026252 PMAQI
26th Jul 2026333 PMAQI
26th Jul 2026324 PMAQI
26th Jul 2026285 PMAQI
26th Jul 2026306 PMAQI
26th Jul 2026237 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026289 PMAQI
26th Jul 20262710 PMAQI
26th Jul 20262611 PMAQI
27th Jul 20263212 AMAQI
27th Jul 2026381 AMAQI
27th Jul 2026262 AMAQI
27th Jul 2026283 AMAQI
27th Jul 2026294 AMAQI
27th Jul 2026295 AMAQI

17°C10/25°C

27th Jul 2026326 AMAQI
27th Jul 2026307 AMAQI
27th Jul 2026298 AMAQI
27th Jul 2026279 AMAQI
27th Jul 20262410 AMAQI
27th Jul 20262611 AMAQI
27th Jul 20262912 PMAQI
27th Jul 2026281 PMAQI
27th Jul 2026232 PMAQI
27th Jul 2026283 PMAQI
27th Jul 2026294 PMAQI
27th Jul 2026305 PMAQI
27th Jul 2026256 PMAQI
27th Jul 2026257 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026299 PMAQI
27th Jul 20263610 PMAQI
27th Jul 20264111 PMAQI
28th Jul 20264112 AMAQI
28th Jul 2026241 AMAQI
28th Jul 2026252 AMAQI
28th Jul 2026293 AMAQI
28th Jul 2026304 AMAQI
28th Jul 2026255 AMAQI

19°C10/30°C

28th Jul 2026286 AMAQI
28th Jul 2026287 AMAQI
28th Jul 2026308 AMAQI
28th Jul 2026309 AMAQI
28th Jul 20262410 AMAQI
28th Jul 20262411 AMAQI
28th Jul 20263012 PMAQI
28th Jul 2026251 PMAQI
28th Jul 2026362 PMAQI
28th Jul 2026433 PMAQI
28th Jul 2026504 PMAQI
28th Jul 2026435 PMAQI
28th Jul 2026446 PMAQI
28th Jul 2026487 PMAQI
28th Jul 2026518 PMAQI
28th Jul 2026489 PMAQI
28th Jul 20264510 PMAQI
28th Jul 20264411 PMAQI
29th Jul 20265212 AMAQI
29th Jul 2026561 AMAQI
29th Jul 2026582 AMAQI
29th Jul 2026583 AMAQI
29th Jul 2026524 AMAQI
29th Jul 2026485 AMAQI

24°C13/37°C

29th Jul 2026486 AMAQI
29th Jul 2026447 AMAQI
29th Jul 2026458 AMAQI
29th Jul 2026469 AMAQI
29th Jul 20264610 AMAQI
29th Jul 20264711 AMAQI
29th Jul 20265212 PMAQI
29th Jul 2026541 PMAQI
29th Jul 2026582 PMAQI
29th Jul 2026623 PMAQI
29th Jul 2026644 PMAQI
29th Jul 2026675 PMAQI
29th Jul 2026646 PMAQI
29th Jul 2026637 PMAQI
29th Jul 2026628 PMAQI
29th Jul 2026579 PMAQI
29th Jul 20265610 PMAQI
29th Jul 20265411 PMAQI
30th Jul 20265212 AMAQI
30th Jul 2026481 AMAQI
30th Jul 2026472 AMAQI
30th Jul 2026403 AMAQI
30th Jul 2026364 AMAQI
30th Jul 2026425 AMAQI

26°C17/39°C

30th Jul 2026456 AMAQI
6 AM
30th Jul 2026437 AMAQI
30th Jul 2026448 AMAQI
30th Jul 2026449 AMAQI
30th Jul 20265010 AMAQI
30th Jul 20264811 AMAQI
30th Jul 20264812 PMAQI
30th Jul 2026501 PMAQI
1 PM
30th Jul 2026482 PMAQI
30th Jul 2026523 PMAQI
30th Jul 2026574 PMAQI
30th Jul 2026515 PMAQI
30th Jul 2026516 PMAQI
30th Jul 2026467 PMAQI
30th Jul 2026428 PMAQI
30th Jul 2026469 PMAQI
9 PM
30th Jul 20263610 PMAQI
30th Jul 20262811 PMAQI
1 AM
5 AM

23°C13/36°C

Day time
Avg. Highest Time
6 AM - 9 PM

36AQI

16 hours / Day
480 hours / Month
Avg. Lowest Time
6 AM - 2 PM

36AQI

9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 9 PM (Avg. 36), while the lowest AQI was between 6 AM to 2 PM (Avg. 36).
Night time
Avg. Highest Time
12 AM - 2 AM

37AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
3 AM - 11 PM

35AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 37), while the lowest AQI was between 3 AM to 11 PM (Avg. 35).

2026 Days Vs Air Quality

Castro Urdiales, Cantabria, Spain

2026

92%

190

8%

17

Total number of days with different AQI categories in last 211 days in 2026 (154 days remaining)

Good
190 Days
Moderate
17 Days
Poor
0 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 92%

Health Risk Level:

Very Low

In 2026, 92% of 211 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

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

23AQI (US)

29AQI (US)

29AQI (US)

30AQI (US)

30AQI (US)

30AQI (US)

36AQI (US)

No. of days

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

202630AQI (US)

31
26
2
27
4
26
2
28
2
27
3
25
4
190
17

Highest AQI (US) recorded in

July

36AQI (US)

Lowest AQI (US) recorded in

January

23AQI (US)

202532AQI (US)

31
28
31
30
31
25
5
31
24
7
30
16
15
30
28
3
335
30

Highest AQI (US) recorded in

October

46AQI (US)

Lowest AQI (US) recorded in

September

24AQI (US)

202429AQI (US)

31
29
31
30
31
30
31
30
27
31
29
1
29
2
359
3

Highest AQI (US) recorded in

December

35AQI (US)

Lowest AQI (US) recorded in

January

20AQI (US)

202324AQI (US)

31
28
31
30
31
30
30
1
31
30
31
29
31
363
1

Highest AQI (US) recorded in

May

30AQI (US)

Lowest AQI (US) recorded in

December

18AQI (US)

202226AQI (US)

31
22
29
1
1
30
31
30
24
1
28
30
1
30
31
317
2
1

Highest AQI (US) recorded in

March

35AQI (US)

Lowest AQI (US) recorded in

January

18AQI (US)

202123AQI (US)

30
24
31
30
31
30
31
31
30
31
30
31
360

Highest AQI (US) recorded in

April

27AQI (US)

Lowest AQI (US) recorded in

December

18AQI (US)

202025AQI (US)

13
21
19
30
31
31
30
31
30
30
266

Highest AQI (US) recorded in

May

31AQI (US)

Lowest AQI (US) recorded in

November

20AQI (US)

Most & Least Polluted Years Over the Last 7 Years

Most Polluted Year Recorded
2025(Avg.)
32AQI (US)
Least Polluted Year Recorded
2021(Avg.)
23AQI (US)

Castro Urdiales's annual 2026 AQI (US) (30) shows an average percentage change of 14.6% (worsened AQI (US)) compared to previous years: 2020 (25), 2021 (23), 2022 (26), 2023 (24), 2024 (29), 2025 (32).