Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Cardiff Centre, Caerdydd, Cardiff, United Kingdom 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

Cardiff Centre, Caerdydd, Cardiff, United Kingdom

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
19th Aug 2024
58AQI
Lowest AQI recorded on
8th Aug 2023
15AQI

Same Day Analysis (10th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 38 of Good air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 10th Aug - 11th Aug 2025

Cardiff Centre, Caerdydd, Cardiff, United Kingdom

AQI
Day
Night
.

5 AM10th Aug 2025

9 PM

4 AM11th Aug 2025

Day time
Avg. Highest Time
6PM10th Aug

59AQI

Avg. Lowest Time
9AM10th Aug

30AQI

Night time
Avg. Highest Time
3AM11th Aug

56AQI

Avg. Lowest Time
4AM11th Aug

38AQI

In the last 24 hours,

Cardiff Centre's AQI reached its highest point of 59 at 6 PM during the Day, while the lowest point, 30, was recorded at 9 AM during the Day between 10th Aug and 11th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Cardiff Centre, Caerdydd, Cardiff, United Kingdom

JulAug
12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
12th Jul 2025465 AMAQI
12th Jul 2025526 AMAQI
12th Jul 2025477 AMAQI
12th Jul 2025508 AMAQI
12th Jul 2025529 AMAQI
12th Jul 20254010 AMAQI
12th Jul 20254711 AMAQI
12th Jul 20255112 PMAQI
12th Jul 2025531 PMAQI
12th Jul 2025502 PMAQI
12th Jul 2025503 PMAQI
12th Jul 2025484 PMAQI
12th Jul 2025485 PMAQI
12th Jul 2025476 PMAQI
12th Jul 2025467 PMAQI
12th Jul 2025408 PMAQI
12th Jul 2025389 PMAQI
12th Jul 20254010 PMAQI
12th Jul 20254211 PMAQI
13th Jul 20254412 AMAQI
13th Jul 2025441 AMAQI
13th Jul 2025402 AMAQI
13th Jul 2025403 AMAQI
13th Jul 2025484 AMAQI

22°C16/29°C

13th Jul 2025525 AMAQI
13th Jul 2025306 AMAQI
13th Jul 2025337 AMAQI
13th Jul 2025338 AMAQI
13th Jul 2025249 AMAQI
13th Jul 20254210 AMAQI
13th Jul 20254211 AMAQI
13th Jul 20254812 PMAQI
13th Jul 2025421 PMAQI
13th Jul 2025382 PMAQI
13th Jul 2025373 PMAQI
13th Jul 2025364 PMAQI
13th Jul 2025365 PMAQI
13th Jul 2025376 PMAQI
13th Jul 2025377 PMAQI
13th Jul 2025388 PMAQI
13th Jul 2025409 PMAQI
13th Jul 20254010 PMAQI
13th Jul 20253911 PMAQI
14th Jul 20253912 AMAQI
14th Jul 2025451 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025583 AMAQI
14th Jul 2025564 AMAQI

20°C15/27°C

14th Jul 2025555 AMAQI
14th Jul 2025506 AMAQI
14th Jul 2025507 AMAQI
14th Jul 2025338 AMAQI
14th Jul 2025229 AMAQI
14th Jul 20252510 AMAQI
14th Jul 20253511 AMAQI
14th Jul 20255212 PMAQI
14th Jul 2025491 PMAQI
14th Jul 2025432 PMAQI
14th Jul 2025463 PMAQI
14th Jul 2025474 PMAQI
14th Jul 2025445 PMAQI
14th Jul 2025526 PMAQI
14th Jul 2025457 PMAQI
14th Jul 2025508 PMAQI
14th Jul 2025489 PMAQI
14th Jul 20254310 PMAQI
14th Jul 20255011 PMAQI
15th Jul 20254612 AMAQI
15th Jul 2025401 AMAQI
15th Jul 2025442 AMAQI
15th Jul 2025503 AMAQI
15th Jul 2025444 AMAQI

17°C15/20°C

15th Jul 2025365 AMAQI
15th Jul 2025296 AMAQI
15th Jul 2025387 AMAQI
15th Jul 2025348 AMAQI
15th Jul 2025349 AMAQI
15th Jul 20253910 AMAQI
15th Jul 20253311 AMAQI
15th Jul 20253412 PMAQI
15th Jul 2025341 PMAQI
15th Jul 2025372 PMAQI
15th Jul 2025383 PMAQI
15th Jul 2025404 PMAQI
15th Jul 2025445 PMAQI
15th Jul 2025506 PMAQI
15th Jul 2025387 PMAQI
15th Jul 2025388 PMAQI
15th Jul 2025379 PMAQI
15th Jul 20253610 PMAQI
15th Jul 20253811 PMAQI
16th Jul 20253812 AMAQI
16th Jul 2025471 AMAQI
16th Jul 2025452 AMAQI
16th Jul 2025273 AMAQI
16th Jul 2025404 AMAQI

16°C14/19°C

16th Jul 2025385 AMAQI
16th Jul 2025416 AMAQI
16th Jul 2025397 AMAQI
16th Jul 2025398 AMAQI
16th Jul 2025389 AMAQI
16th Jul 20253810 AMAQI
16th Jul 20252911 AMAQI
16th Jul 20253212 PMAQI
16th Jul 2025421 PMAQI
16th Jul 2025392 PMAQI
16th Jul 2025433 PMAQI
16th Jul 2025434 PMAQI
16th Jul 2025355 PMAQI
16th Jul 2025396 PMAQI
16th Jul 2025427 PMAQI
16th Jul 2025378 PMAQI
16th Jul 2025369 PMAQI
16th Jul 20253610 PMAQI
16th Jul 20253611 PMAQI
17th Jul 20253412 AMAQI
17th Jul 2025391 AMAQI
17th Jul 2025242 AMAQI
17th Jul 2025473 AMAQI
17th Jul 2025454 AMAQI

18°C14/22°C

17th Jul 2025385 AMAQI
17th Jul 2025346 AMAQI
17th Jul 2025347 AMAQI
17th Jul 2025238 AMAQI
17th Jul 2025209 AMAQI
17th Jul 20253310 AMAQI
17th Jul 20253011 AMAQI
17th Jul 20254112 PMAQI
17th Jul 2025351 PMAQI
17th Jul 2025312 PMAQI
17th Jul 2025323 PMAQI
17th Jul 2025344 PMAQI
17th Jul 2025295 PMAQI
17th Jul 2025286 PMAQI
17th Jul 2025347 PMAQI
17th Jul 2025308 PMAQI
17th Jul 2025309 PMAQI
17th Jul 20253410 PMAQI
17th Jul 20253311 PMAQI
18th Jul 20253412 AMAQI
18th Jul 2025341 AMAQI
18th Jul 2025382 AMAQI
18th Jul 2025293 AMAQI
18th Jul 2025344 AMAQI

18°C16/23°C

18th Jul 2025345 AMAQI
18th Jul 2025366 AMAQI
18th Jul 2025357 AMAQI
18th Jul 2025408 AMAQI
18th Jul 2025469 AMAQI
18th Jul 20253710 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252312 PMAQI
18th Jul 2025341 PMAQI
18th Jul 2025332 PMAQI
18th Jul 2025363 PMAQI
18th Jul 2025374 PMAQI
18th Jul 2025365 PMAQI
18th Jul 2025356 PMAQI
18th Jul 2025467 PMAQI
18th Jul 2025378 PMAQI
18th Jul 2025319 PMAQI
18th Jul 20253210 PMAQI
18th Jul 20253211 PMAQI
19th Jul 20253212 AMAQI
19th Jul 2025341 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025483 AMAQI
19th Jul 2025214 AMAQI

18°C15/21°C

19th Jul 2025435 AMAQI
19th Jul 2025396 AMAQI
19th Jul 2025327 AMAQI
19th Jul 2025468 AMAQI
19th Jul 2025429 AMAQI
19th Jul 20251810 AMAQI
19th Jul 20252411 AMAQI
19th Jul 20253412 PMAQI
19th Jul 2025341 PMAQI
19th Jul 2025362 PMAQI
19th Jul 2025443 PMAQI
19th Jul 2025394 PMAQI
19th Jul 2025385 PMAQI
19th Jul 2025376 PMAQI
19th Jul 2025367 PMAQI
19th Jul 2025378 PMAQI
19th Jul 2025399 PMAQI
19th Jul 20253410 PMAQI
19th Jul 20253711 PMAQI
20th Jul 20253312 AMAQI
20th Jul 2025321 AMAQI
20th Jul 2025242 AMAQI
20th Jul 2025223 AMAQI
20th Jul 2025314 AMAQI

18°C15/22°C

20th Jul 2025345 AMAQI
20th Jul 2025296 AMAQI
20th Jul 2025277 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025419 AMAQI
20th Jul 20255110 AMAQI
20th Jul 20254511 AMAQI
20th Jul 20253512 PMAQI
20th Jul 2025331 PMAQI
20th Jul 2025182 PMAQI
20th Jul 2025223 PMAQI
20th Jul 2025264 PMAQI
20th Jul 2025325 PMAQI
20th Jul 2025326 PMAQI
20th Jul 2025327 PMAQI
20th Jul 2025288 PMAQI
20th Jul 2025299 PMAQI
20th Jul 20252810 PMAQI
20th Jul 20252911 PMAQI
21st Jul 20252912 AMAQI
21st Jul 2025251 AMAQI
21st Jul 2025222 AMAQI
21st Jul 2025263 AMAQI
21st Jul 2025314 AMAQI

17°C14/18°C

21st Jul 2025345 AMAQI
21st Jul 2025226 AMAQI
21st Jul 2025347 AMAQI
21st Jul 2025348 AMAQI
21st Jul 2025229 AMAQI
21st Jul 20253310 AMAQI
21st Jul 20253811 AMAQI
21st Jul 20253412 PMAQI
21st Jul 2025371 PMAQI
21st Jul 2025332 PMAQI
21st Jul 2025263 PMAQI
21st Jul 2025294 PMAQI
21st Jul 2025355 PMAQI
21st Jul 2025346 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025308 PMAQI
21st Jul 2025269 PMAQI
21st Jul 20253210 PMAQI
21st Jul 20252611 PMAQI
22nd Jul 20252612 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025222 AMAQI
22nd Jul 2025153 AMAQI
22nd Jul 2025374 AMAQI

16°C12/20°C

22nd Jul 2025445 AMAQI
22nd Jul 2025356 AMAQI
22nd Jul 2025187 AMAQI
22nd Jul 2025158 AMAQI
22nd Jul 2025149 AMAQI
22nd Jul 20253210 AMAQI
22nd Jul 20251211 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025342 PMAQI
22nd Jul 2025293 PMAQI
22nd Jul 2025304 PMAQI
22nd Jul 2025325 PMAQI
22nd Jul 2025356 PMAQI
22nd Jul 2025297 PMAQI
22nd Jul 2025288 PMAQI
22nd Jul 2025259 PMAQI
22nd Jul 20252610 PMAQI
22nd Jul 20252511 PMAQI
23rd Jul 20252612 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025213 AMAQI
23rd Jul 2025174 AMAQI

17°C14/21°C

23rd Jul 2025165 AMAQI
23rd Jul 2025246 AMAQI
23rd Jul 2025177 AMAQI
23rd Jul 2025158 AMAQI
23rd Jul 2025269 AMAQI
23rd Jul 20253210 AMAQI
23rd Jul 20252911 AMAQI
23rd Jul 20252612 PMAQI
23rd Jul 2025241 PMAQI
23rd Jul 2025212 PMAQI
23rd Jul 2025253 PMAQI
23rd Jul 2025384 PMAQI
23rd Jul 2025405 PMAQI
23rd Jul 2025586 PMAQI
23rd Jul 2025597 PMAQI
23rd Jul 2025448 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252710 PMAQI
23rd Jul 20252611 PMAQI
24th Jul 20252512 AMAQI
24th Jul 2025301 AMAQI
24th Jul 2025472 AMAQI
24th Jul 2025493 AMAQI
24th Jul 2025564 AMAQI

17°C14/22°C

24th Jul 2025605 AMAQI
24th Jul 2025606 AMAQI
24th Jul 2025557 AMAQI
24th Jul 2025548 AMAQI
24th Jul 2025549 AMAQI
24th Jul 20256510 AMAQI
24th Jul 20255211 AMAQI
24th Jul 20255812 PMAQI
24th Jul 2025521 PMAQI
24th Jul 2025532 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025524 PMAQI
24th Jul 2025545 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025547 PMAQI
24th Jul 2025548 PMAQI
24th Jul 2025529 PMAQI
24th Jul 20255310 PMAQI
24th Jul 20255411 PMAQI
25th Jul 20255412 AMAQI
25th Jul 2025541 AMAQI
25th Jul 2025632 AMAQI
25th Jul 2025643 AMAQI
25th Jul 2025654 AMAQI

18°C13/21°C

25th Jul 2025795 AMAQI
25th Jul 2025696 AMAQI
25th Jul 2025747 AMAQI
25th Jul 2025808 AMAQI
25th Jul 2025689 AMAQI
25th Jul 20256610 AMAQI
25th Jul 20256311 AMAQI
25th Jul 20256112 PMAQI
25th Jul 2025631 PMAQI
25th Jul 2025632 PMAQI
25th Jul 2025623 PMAQI
25th Jul 2025624 PMAQI
25th Jul 2025625 PMAQI
25th Jul 2025596 PMAQI
25th Jul 2025587 PMAQI
25th Jul 2025618 PMAQI
25th Jul 2025619 PMAQI
25th Jul 20256610 PMAQI
25th Jul 20256111 PMAQI
26th Jul 20255912 AMAQI
26th Jul 2025541 AMAQI
26th Jul 2025262 AMAQI
26th Jul 2025233 AMAQI
26th Jul 2025244 AMAQI

18°C14/22°C

26th Jul 2025245 AMAQI
26th Jul 2025346 AMAQI
26th Jul 2025217 AMAQI
26th Jul 2025188 AMAQI
26th Jul 2025219 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252611 AMAQI
26th Jul 20252612 PMAQI
26th Jul 2025291 PMAQI
26th Jul 2025322 PMAQI
26th Jul 2025283 PMAQI
26th Jul 2025264 PMAQI
26th Jul 2025295 PMAQI
26th Jul 2025346 PMAQI
26th Jul 2025317 PMAQI
26th Jul 2025288 PMAQI
26th Jul 2025329 PMAQI
26th Jul 20253110 PMAQI
26th Jul 20252911 PMAQI
27th Jul 20253312 AMAQI
27th Jul 2025301 AMAQI
27th Jul 2025252 AMAQI
27th Jul 2025213 AMAQI
27th Jul 2025284 AMAQI

18°C14/22°C

27th Jul 2025295 AMAQI
27th Jul 2025286 AMAQI
27th Jul 2025267 AMAQI
27th Jul 2025268 AMAQI
27th Jul 2025269 AMAQI
27th Jul 20253610 AMAQI
27th Jul 20253011 AMAQI
27th Jul 20252712 PMAQI
27th Jul 2025271 PMAQI
27th Jul 2025442 PMAQI
27th Jul 2025343 PMAQI
27th Jul 2025364 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025356 PMAQI
27th Jul 2025317 PMAQI
27th Jul 2025308 PMAQI
27th Jul 2025289 PMAQI
27th Jul 20252910 PMAQI
27th Jul 20252911 PMAQI
28th Jul 20252912 AMAQI
28th Jul 2025321 AMAQI
28th Jul 2025272 AMAQI
28th Jul 2025293 AMAQI
28th Jul 2025304 AMAQI

16°C12/19°C

28th Jul 2025285 AMAQI
28th Jul 2025306 AMAQI
28th Jul 2025287 AMAQI
28th Jul 2025368 AMAQI
28th Jul 2025389 AMAQI
28th Jul 20253810 AMAQI
28th Jul 20253911 AMAQI
28th Jul 20252712 PMAQI
28th Jul 2025341 PMAQI
28th Jul 2025412 PMAQI
28th Jul 2025353 PMAQI
28th Jul 2025384 PMAQI
28th Jul 2025345 PMAQI
28th Jul 2025346 PMAQI
28th Jul 2025287 PMAQI
28th Jul 2025268 PMAQI
28th Jul 2025289 PMAQI
28th Jul 20253110 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20253212 AMAQI
29th Jul 2025301 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025263 AMAQI
29th Jul 2025304 AMAQI

17°C12/21°C

29th Jul 2025225 AMAQI
29th Jul 2025326 AMAQI
29th Jul 2025267 AMAQI
29th Jul 2025298 AMAQI
29th Jul 2025309 AMAQI
29th Jul 20252910 AMAQI
29th Jul 20252111 AMAQI
29th Jul 20251612 PMAQI
29th Jul 2025261 PMAQI
29th Jul 2025262 PMAQI
29th Jul 2025233 PMAQI
29th Jul 2025244 PMAQI
29th Jul 2025275 PMAQI
29th Jul 2025316 PMAQI
29th Jul 2025257 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025269 PMAQI
29th Jul 20252410 PMAQI
29th Jul 20252611 PMAQI
30th Jul 20252712 AMAQI
30th Jul 2025361 AMAQI
30th Jul 2025282 AMAQI
30th Jul 2025183 AMAQI
30th Jul 2025184 AMAQI

17°C13/22°C

30th Jul 2025335 AMAQI
30th Jul 2025236 AMAQI
30th Jul 2025287 AMAQI
30th Jul 2025228 AMAQI
30th Jul 2025299 AMAQI
30th Jul 20253810 AMAQI
30th Jul 20253711 AMAQI
30th Jul 20252912 PMAQI
30th Jul 2025301 PMAQI
30th Jul 2025342 PMAQI
30th Jul 2025313 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025325 PMAQI
30th Jul 2025306 PMAQI
30th Jul 2025387 PMAQI
30th Jul 2025578 PMAQI
30th Jul 2025639 PMAQI
30th Jul 20256310 PMAQI
30th Jul 20256311 PMAQI
31st Jul 20256312 AMAQI
31st Jul 2025631 AMAQI
31st Jul 2025632 AMAQI
31st Jul 2025423 AMAQI
31st Jul 2025324 AMAQI

18°C14/22°C

31st Jul 2025275 AMAQI
31st Jul 2025246 AMAQI
31st Jul 2025187 AMAQI
31st Jul 2025338 AMAQI
31st Jul 2025189 AMAQI
31st Jul 20251410 AMAQI
31st Jul 20251411 AMAQI
31st Jul 20251612 PMAQI
31st Jul 2025201 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025213 PMAQI
31st Jul 2025204 PMAQI
31st Jul 2025195 PMAQI
31st Jul 2025206 PMAQI
31st Jul 2025227 PMAQI
31st Jul 2025258 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252410 PMAQI
31st Jul 20252211 PMAQI
1st Aug 20252212 AMAQI
1st Aug 2025231 AMAQI
1st Aug 2025222 AMAQI
1st Aug 2025223 AMAQI
1st Aug 2025204 AMAQI

19°C14/23°C

1st Aug 2025215 AMAQI
1st Aug 2025206 AMAQI
1st Aug 2025187 AMAQI
1st Aug 2025188 AMAQI
1st Aug 2025219 AMAQI
1st Aug 20252110 AMAQI
1st Aug 20252011 AMAQI
1st Aug 20252412 PMAQI
1st Aug 2025231 PMAQI
1st Aug 2025252 PMAQI
1st Aug 2025243 PMAQI
1st Aug 2025244 PMAQI
1st Aug 2025225 PMAQI
1st Aug 2025246 PMAQI
1st Aug 2025257 PMAQI
1st Aug 2025238 PMAQI
1st Aug 2025229 PMAQI
1st Aug 20252210 PMAQI
1st Aug 20252211 PMAQI
2nd Aug 20252212 AMAQI
2nd Aug 2025221 AMAQI
2nd Aug 2025202 AMAQI
2nd Aug 2025223 AMAQI
2nd Aug 2025204 AMAQI

16°C11/20°C

2nd Aug 2025195 AMAQI
2nd Aug 2025206 AMAQI
2nd Aug 2025207 AMAQI
2nd Aug 2025188 AMAQI
2nd Aug 2025199 AMAQI
2nd Aug 20251910 AMAQI
2nd Aug 20251811 AMAQI
2nd Aug 20252112 PMAQI
2nd Aug 2025211 PMAQI
2nd Aug 2025202 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025214 PMAQI
2nd Aug 2025215 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025277 PMAQI
2nd Aug 2025248 PMAQI
2nd Aug 2025229 PMAQI
2nd Aug 20252210 PMAQI
2nd Aug 20252211 PMAQI
3rd Aug 20252012 AMAQI
3rd Aug 2025241 AMAQI
3rd Aug 2025262 AMAQI
3rd Aug 2025263 AMAQI
3rd Aug 2025294 AMAQI

16°C11/20°C

3rd Aug 2025285 AMAQI
3rd Aug 2025336 AMAQI
3rd Aug 2025247 AMAQI
3rd Aug 2025228 AMAQI
3rd Aug 2025229 AMAQI
3rd Aug 20252210 AMAQI
3rd Aug 20252111 AMAQI
3rd Aug 20252312 PMAQI
3rd Aug 2025221 PMAQI
3rd Aug 2025252 PMAQI
3rd Aug 2025213 PMAQI
3rd Aug 2025254 PMAQI
3rd Aug 2025255 PMAQI
3rd Aug 2025246 PMAQI
3rd Aug 2025247 PMAQI
3rd Aug 2025288 PMAQI
3rd Aug 2025269 PMAQI
3rd Aug 20252410 PMAQI
3rd Aug 20252411 PMAQI
4th Aug 20252512 AMAQI
4th Aug 2025241 AMAQI
4th Aug 2025212 AMAQI
4th Aug 2025243 AMAQI
4th Aug 2025234 AMAQI

18°C13/22°C

4th Aug 2025245 AMAQI
4th Aug 2025246 AMAQI
4th Aug 2025227 AMAQI
4th Aug 2025228 AMAQI
4th Aug 2025239 AMAQI
4th Aug 20252410 AMAQI
4th Aug 20252211 AMAQI
4th Aug 20252412 PMAQI
4th Aug 2025221 PMAQI
4th Aug 2025222 PMAQI
4th Aug 2025253 PMAQI
4th Aug 2025264 PMAQI
4th Aug 2025225 PMAQI
4th Aug 2025256 PMAQI
4th Aug 2025267 PMAQI
4th Aug 2025238 PMAQI
4th Aug 2025239 PMAQI
4th Aug 20252310 PMAQI
4th Aug 20252411 PMAQI
5th Aug 20252412 AMAQI
5th Aug 2025251 AMAQI
5th Aug 2025242 AMAQI
5th Aug 2025223 AMAQI
5th Aug 2025214 AMAQI

18°C13/21°C

5th Aug 2025225 AMAQI
5th Aug 2025236 AMAQI
5th Aug 2025277 AMAQI
5th Aug 2025298 AMAQI
5th Aug 2025309 AMAQI
5th Aug 20252810 AMAQI
5th Aug 20252811 AMAQI
5th Aug 20252812 PMAQI
5th Aug 2025361 PMAQI
5th Aug 2025242 PMAQI
5th Aug 2025243 PMAQI
5th Aug 2025244 PMAQI
5th Aug 2025235 PMAQI
5th Aug 2025236 PMAQI
5th Aug 2025257 PMAQI
5th Aug 2025248 PMAQI
5th Aug 2025249 PMAQI
5th Aug 20252510 PMAQI
5th Aug 20252611 PMAQI
6th Aug 20252412 AMAQI
6th Aug 2025261 AMAQI
6th Aug 2025292 AMAQI
6th Aug 2025333 AMAQI
6th Aug 2025324 AMAQI

16°C12/20°C

6th Aug 2025285 AMAQI
6th Aug 2025316 AMAQI
6th Aug 2025307 AMAQI
6th Aug 2025318 AMAQI
6th Aug 2025329 AMAQI
6th Aug 20253110 AMAQI
6th Aug 20253211 AMAQI
6th Aug 20253212 PMAQI
6th Aug 2025321 PMAQI
6th Aug 2025292 PMAQI
6th Aug 2025283 PMAQI
6th Aug 2025304 PMAQI
6th Aug 2025305 PMAQI
6th Aug 2025326 PMAQI
6th Aug 2025317 PMAQI
6th Aug 2025298 PMAQI
6th Aug 2025299 PMAQI
6th Aug 20252810 PMAQI
6th Aug 20252911 PMAQI
7th Aug 20252912 AMAQI
7th Aug 2025301 AMAQI
7th Aug 2025312 AMAQI
7th Aug 2025313 AMAQI
7th Aug 2025314 AMAQI

16°C13/20°C

7th Aug 2025325 AMAQI
7th Aug 2025286 AMAQI
7th Aug 2025307 AMAQI
7th Aug 2025298 AMAQI
7th Aug 2025289 AMAQI
7th Aug 20252510 AMAQI
7th Aug 20252811 AMAQI
7th Aug 20252912 PMAQI
7th Aug 2025271 PMAQI
7th Aug 2025272 PMAQI
7th Aug 2025273 PMAQI
7th Aug 2025264 PMAQI
7th Aug 2025275 PMAQI
7th Aug 2025266 PMAQI
7th Aug 2025277 PMAQI
7th Aug 2025278 PMAQI
7th Aug 2025289 PMAQI
7th Aug 20252810 PMAQI
7th Aug 20252911 PMAQI
8th Aug 20252812 AMAQI
8th Aug 2025301 AMAQI
8th Aug 2025312 AMAQI
8th Aug 2025303 AMAQI
8th Aug 2025304 AMAQI

17°C14/19°C

8th Aug 2025275 AMAQI
8th Aug 2025256 AMAQI
8th Aug 2025267 AMAQI
8th Aug 2025248 AMAQI
8th Aug 2025189 AMAQI
8th Aug 20251810 AMAQI
8th Aug 20251711 AMAQI
8th Aug 20252012 PMAQI
8th Aug 2025271 PMAQI
8th Aug 2025182 PMAQI
8th Aug 2025263 PMAQI
8th Aug 2025254 PMAQI
8th Aug 2025235 PMAQI
8th Aug 2025326 PMAQI
8th Aug 2025227 PMAQI
8th Aug 2025228 PMAQI
8th Aug 2025249 PMAQI
8th Aug 20252410 PMAQI
8th Aug 20252611 PMAQI
9th Aug 20252812 AMAQI
9th Aug 2025331 AMAQI
9th Aug 2025252 AMAQI
9th Aug 2025193 AMAQI
9th Aug 2025204 AMAQI

17°C14/20°C

9th Aug 2025175 AMAQI
9th Aug 2025206 AMAQI
9th Aug 2025217 AMAQI
9th Aug 2025168 AMAQI
9th Aug 2025199 AMAQI
9th Aug 20251810 AMAQI
9th Aug 20251611 AMAQI
9th Aug 20252312 PMAQI
9th Aug 2025241 PMAQI
9th Aug 2025252 PMAQI
9th Aug 2025263 PMAQI
9th Aug 2025264 PMAQI
9th Aug 2025235 PMAQI
9th Aug 2025216 PMAQI
9th Aug 2025277 PMAQI
9th Aug 2025258 PMAQI
9th Aug 2025239 PMAQI
9th Aug 20252410 PMAQI
9th Aug 20252411 PMAQI
10th Aug 20252412 AMAQI
10th Aug 2025241 AMAQI
10th Aug 2025242 AMAQI
10th Aug 2025483 AMAQI
10th Aug 2025344 AMAQI

18°C14/20°C

10th Aug 2025445 AMAQI
10th Aug 2025416 AMAQI
10th Aug 2025317 AMAQI
10th Aug 2025338 AMAQI
10th Aug 2025309 AMAQI
10th Aug 20253410 AMAQI
10th Aug 20255011 AMAQI
10th Aug 20254512 PMAQI
10th Aug 2025491 PMAQI
10th Aug 2025502 PMAQI
10th Aug 2025473 PMAQI
10th Aug 2025494 PMAQI
10th Aug 2025545 PMAQI
10th Aug 2025596 PMAQI
10th Aug 2025457 PMAQI
10th Aug 2025408 PMAQI
10th Aug 2025389 PMAQI
10th Aug 20253810 PMAQI
10th Aug 20253911 PMAQI
11th Aug 20254012 AMAQI
11th Aug 2025481 AMAQI
11th Aug 2025482 AMAQI
11th Aug 2025563 AMAQI
11th Aug 2025384 AMAQI

18°C13/23°C

11th Aug 2025535 AMAQI
5 AM
11th Aug 2025416 AMAQI
11th Aug 2025517 AMAQI
11th Aug 2025528 AMAQI
11th Aug 2025539 AMAQI
11th Aug 20255110 AMAQI
11th Aug 20255411 AMAQI
11th Aug 20255212 PMAQI
11th Aug 2025521 PMAQI
1 PM
11th Aug 2025522 PMAQI
11th Aug 2025503 PMAQI
9 PM
1 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
6 PM - 9 PM

35AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
6 AM - 9 AM

32AQI

4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 9 PM (Avg. 35), while the lowest AQI was between 6 AM to 9 AM (Avg. 32).
Night time
Avg. Highest Time
1 AM

35AQI

1 hours / Day
30 hours / Month
Avg. Lowest Time
12 AM

33AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 1 AM (Avg. 35), while the lowest AQI was between 12 AM to 12 AM (Avg. 33).

2025 Days Vs Air Quality

Cardiff Centre, Caerdydd, Cardiff, United Kingdom

2025

86%

190

14%

32

Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)

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

Under WHO’s Safe Air Quality Limits: 86%

Health Risk Level:

Low

In 2025, 86% of 223 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

Cardiff Centre, Caerdydd, Cardiff, United Kingdom

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.

1st January 2025
34AQI
2nd January 2025
44AQI
3rd January 2025
51AQI
4th January 2025
52AQI
5th January 2025
28AQI
6th January 2025
27AQI
7th January 2025
30AQI
8th January 2025
45AQI
9th January 2025
47AQI
10th January 2025
51AQI
11th January 2025
69AQI
12th January 2025
70AQI
13th January 2025
40AQI
14th January 2025
45AQI
15th January 2025
44AQI
16th January 2025
61AQI
17th January 2025
53AQI
18th January 2025
58AQI
19th January 2025
67AQI
20th January 2025
65AQI
21st January 2025
64AQI
22nd January 2025
62AQI
23rd January 2025
53AQI
24th January 2025
51AQI
25th January 2025
52AQI
26th January 2025
50AQI
27th January 2025
48AQI
28th January 2025
31AQI
29th January 2025
31AQI
30th January 2025
32AQI
31st January 2025
36AQI
1st February 2025
46AQI
2nd February 2025
30AQI
3rd February 2025
41AQI
4th February 2025
32AQI
5th February 2025
39AQI
6th February 2025
48AQI
7th February 2025
37AQI
8th February 2025
57AQI
9th February 2025
73AQI
10th February 2025
66AQI
11th February 2025
63AQI
12th February 2025
65AQI
13th February 2025
68AQI
14th February 2025
66AQI
15th February 2025
72AQI
16th February 2025
72AQI
17th February 2025
71AQI
18th February 2025
76AQI
19th February 2025
80AQI
20th February 2025
33AQI
21st February 2025
36AQI
22nd February 2025
46AQI
23rd February 2025
36AQI
24th February 2025
33AQI
25th February 2025
34AQI
26th February 2025
26AQI
27th February 2025
29AQI
28th February 2025
45AQI
1st March 2025
45AQI
2nd March 2025
50AQI
3rd March 2025
30AQI
4th March 2025
30AQI
5th March 2025
35AQI
6th March 2025
35AQI
7th March 2025
29AQI
8th March 2025
29AQI
9th March 2025
45AQI
10th March 2025
51AQI
11th March 2025
34AQI
12th March 2025
27AQI
13th March 2025
24AQI
14th March 2025
22AQI
15th March 2025
20AQI
16th March 2025
19AQI
17th March 2025
19AQI
18th March 2025
24AQI
19th March 2025
34AQI
20th March 2025
33AQI
21st March 2025
32AQI
22nd March 2025
24AQI
23rd March 2025
30AQI
24th March 2025
37AQI
25th March 2025
26AQI
26th March 2025
22AQI
27th March 2025
19AQI
28th March 2025
18AQI
29th March 2025
18AQI
30th March 2025
20AQI
31st March 2025
21AQI
1st April 2025
20AQI
2nd April 2025
24AQI
3rd April 2025
25AQI
4th April 2025
32AQI
5th April 2025
23AQI
6th April 2025
18AQI
7th April 2025
18AQI
8th April 2025
21AQI
9th April 2025
22AQI
10th April 2025
22AQI
11th April 2025
27AQI
12th April 2025
24AQI
13th April 2025
19AQI
14th April 2025
15AQI
15th April 2025
16AQI
16th April 2025
15AQI
17th April 2025
17AQI
18th April 2025
17AQI
19th April 2025
16AQI
20th April 2025
18AQI
21st April 2025
18AQI
22nd April 2025
16AQI
23rd April 2025
16AQI
24th April 2025
20AQI
25th April 2025
22AQI
26th April 2025
21AQI
27th April 2025
19AQI
28th April 2025
18AQI
29th April 2025
22AQI
30th April 2025
25AQI
1st May 2025
31AQI
2nd May 2025
28AQI
3rd May 2025
24AQI
4th May 2025
19AQI
5th May 2025
19AQI
6th May 2025
19AQI
7th May 2025
32AQI
8th May 2025
26AQI
9th May 2025
32AQI
10th May 2025
37AQI
11th May 2025
36AQI
12th May 2025
37AQI
13th May 2025
34AQI
14th May 2025
38AQI
15th May 2025
37AQI
16th May 2025
37AQI
17th May 2025
40AQI
18th May 2025
43AQI
19th May 2025
39AQI
20th May 2025
36AQI
21st May 2025
32AQI
22nd May 2025
35AQI
23rd May 2025
36AQI
24th May 2025
29AQI
25th May 2025
24AQI
26th May 2025
26AQI
27th May 2025
23AQI
28th May 2025
27AQI
29th May 2025
21AQI
30th May 2025
23AQI
31st May 2025
24AQI
1st June 2025
30AQI
2nd June 2025
25AQI
3rd June 2025
27AQI
4th June 2025
26AQI
5th June 2025
20AQI
6th June 2025
20AQI
7th June 2025
18AQI
8th June 2025
22AQI
9th June 2025
57AQI
10th June 2025
32AQI
11th June 2025
32AQI
12th June 2025
42AQI
13th June 2025
38AQI
14th June 2025
28AQI
15th June 2025
32AQI
16th June 2025
30AQI
17th June 2025
28AQI
18th June 2025
33AQI
19th June 2025
43AQI
20th June 2025
51AQI
21st June 2025
46AQI
22nd June 2025
47AQI
23rd June 2025
22AQI
24th June 2025
23AQI
25th June 2025
17AQI
26th June 2025
19AQI
27th June 2025
21AQI
28th June 2025
18AQI
29th June 2025
24AQI
30th June 2025
28AQI
1st July 2025
27AQI
2nd July 2025
20AQI
3rd July 2025
20AQI
4th July 2025
23AQI
5th July 2025
23AQI
6th July 2025
22AQI
7th July 2025
24AQI
8th July 2025
26AQI
9th July 2025
28AQI
10th July 2025
28AQI
11th July 2025
35AQI
12th July 2025
44AQI
13th July 2025
39AQI
14th July 2025
46AQI
15th July 2025
39AQI
16th July 2025
38AQI
17th July 2025
33AQI
18th July 2025
35AQI
19th July 2025
36AQI
20th July 2025
31AQI
21st July 2025
30AQI
22nd July 2025
27AQI
23rd July 2025
29AQI
24th July 2025
52AQI
25th July 2025
64AQI
26th July 2025
30AQI
27th July 2025
30AQI
28th July 2025
31AQI
29th July 2025
26AQI
30th July 2025
36AQI
31st July 2025
28AQI
1st August 2025
22AQI
2nd August 2025
21AQI
3rd August 2025
25AQI
4th August 2025
23AQI
5th August 2025
25AQI
6th August 2025
30AQI
7th August 2025
28AQI
8th August 2025
25AQI
9th August 2025
23AQI
10th August 2025
38AQI

48AQI

51AQI

29AQI

20AQI

30AQI

30AQI

32AQI

26AQI

No. of days

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

202534AQI

16
15
16
12
30
1
30
31
28
2
29
2
10
190
32

Highest AQI recorded in

February

51AQI

Lowest AQI recorded in

April

20AQI

202436AQI

26
5
24
5
27
4
30
26
5
28
2
31
30
1
25
5
31
20
9
1
31
329
36
1

Highest AQI recorded in

November

46AQI

Lowest AQI recorded in

July

26AQI

202343AQI

24
7
21
7
25
6
16
14
19
12
10
20
27
4
26
5
17
12
23
8
24
5
28
3
260
103

Highest AQI recorded in

June

55AQI

Lowest AQI recorded in

August

33AQI

202246AQI

22
9
14
7
14
16
1
20
10
28
3
24
6
20
2
1
27
1
24
7
18
12
15
16
227
89
1

Highest AQI recorded in

March

57AQI

Lowest AQI recorded in

August

35AQI

202136AQI

25
5
23
5
23
7
1
21
9
28
3
27
3
26
5
31
26
4
29
2
28
2
27
4
314
49
1

Highest AQI recorded in

March

47AQI

Lowest AQI recorded in

October

30AQI

202032AQI

8
5
13
8
18
28
2
31
25
6
29
1
31
22
8
29
2
234
32

Highest AQI recorded in

April

49AQI

Lowest AQI recorded in

July

19AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
46AQI
Least Polluted Year Recorded
2020(Avg.)
32AQI

Cardiff Centre's annual 2025 AQI (34) shows an average percentage change of -10.7% (improved AQI) compared to previous years: 2020 (32), 2021 (36), 2022 (46), 2023 (43), 2024 (36).