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
Caerdydd, Cardiff, United Kingdom
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
19th Aug 2024
56AQILowest AQI recorded on
8th Aug 2023
15AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 22 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Caerdydd, Cardiff, United Kingdom
AQI
Day
Night
.
5 AM2nd Aug 2025
9 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
7PM2nd Aug
26AQI
Avg. Lowest Time
8AM2nd Aug
19AQI
Night time
Avg. Highest Time
9PM2nd Aug
22AQI
Avg. Lowest Time
1AM3rd Aug
21AQI
In the last 24 hours,
Caerdydd's AQI reached its highest point of 26 at 7 PM during the Day, while the lowest point, undefined, was recorded at 4 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Caerdydd, Cardiff, United Kingdom
JulAug
04th - 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 - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025235 AMAQI
4th Jul 2025256 AMAQI
4th Jul 2025247 AMAQI
4th Jul 2025248 AMAQI
4th Jul 2025199 AMAQI
4th Jul 20251910 AMAQI
4th Jul 20252011 AMAQI
4th Jul 20252512 PMAQI
4th Jul 2025241 PMAQI
4th Jul 2025342 PMAQI
4th Jul 2025273 PMAQI
4th Jul 2025224 PMAQI
4th Jul 2025305 PMAQI
4th Jul 2025306 PMAQI
4th Jul 2025337 PMAQI
4th Jul 2025338 PMAQI
4th Jul 2025229 PMAQI
4th Jul 20252210 PMAQI
4th Jul 20252311 PMAQI
5th Jul 20252312 AMAQI
5th Jul 2025311 AMAQI
5th Jul 2025352 AMAQI
5th Jul 2025343 AMAQI
5th Jul 2025234 AMAQI
16°C12/19°C
5th Jul 2025185 AMAQI
5th Jul 2025166 AMAQI
5th Jul 2025167 AMAQI
5th Jul 2025148 AMAQI
5th Jul 2025159 AMAQI
5th Jul 20251410 AMAQI
5th Jul 20251611 AMAQI
5th Jul 20252412 PMAQI
5th Jul 2025241 PMAQI
5th Jul 2025242 PMAQI
5th Jul 2025253 PMAQI
5th Jul 2025264 PMAQI
5th Jul 2025225 PMAQI
5th Jul 2025276 PMAQI
5th Jul 2025307 PMAQI
5th Jul 2025258 PMAQI
5th Jul 2025229 PMAQI
5th Jul 20252310 PMAQI
5th Jul 20252311 PMAQI
6th Jul 20252212 AMAQI
6th Jul 2025251 AMAQI
6th Jul 2025292 AMAQI
6th Jul 2025243 AMAQI
6th Jul 2025194 AMAQI
17°C15/19°C
6th Jul 2025195 AMAQI
6th Jul 2025166 AMAQI
6th Jul 2025227 AMAQI
6th Jul 2025228 AMAQI
6th Jul 2025199 AMAQI
6th Jul 20252110 AMAQI
6th Jul 20252211 AMAQI
6th Jul 20251812 PMAQI
6th Jul 2025191 PMAQI
6th Jul 2025212 PMAQI
6th Jul 2025203 PMAQI
6th Jul 2025204 PMAQI
6th Jul 2025195 PMAQI
6th Jul 2025186 PMAQI
6th Jul 2025257 PMAQI
6th Jul 2025208 PMAQI
6th Jul 2025209 PMAQI
6th Jul 20252110 PMAQI
6th Jul 20252111 PMAQI
7th Jul 20252112 AMAQI
7th Jul 2025191 AMAQI
7th Jul 2025142 AMAQI
7th Jul 2025143 AMAQI
7th Jul 2025234 AMAQI
17°C14/20°C
7th Jul 2025245 AMAQI
7th Jul 2025286 AMAQI
7th Jul 2025317 AMAQI
7th Jul 2025258 AMAQI
7th Jul 2025249 AMAQI
7th Jul 20252810 AMAQI
7th Jul 20252811 AMAQI
7th Jul 20252312 PMAQI
7th Jul 2025221 PMAQI
7th Jul 2025222 PMAQI
7th Jul 2025223 PMAQI
7th Jul 2025194 PMAQI
7th Jul 2025225 PMAQI
7th Jul 2025256 PMAQI
7th Jul 2025267 PMAQI
7th Jul 2025258 PMAQI
7th Jul 2025209 PMAQI
7th Jul 20252010 PMAQI
7th Jul 20252111 PMAQI
8th Jul 20252012 AMAQI
8th Jul 2025271 AMAQI
8th Jul 2025182 AMAQI
8th Jul 2025193 AMAQI
8th Jul 2025264 AMAQI
16°C13/20°C
8th Jul 2025245 AMAQI
8th Jul 2025186 AMAQI
8th Jul 2025287 AMAQI
8th Jul 2025318 AMAQI
8th Jul 2025299 AMAQI
8th Jul 20253310 AMAQI
8th Jul 20253211 AMAQI
8th Jul 20252912 PMAQI
8th Jul 2025241 PMAQI
8th Jul 2025252 PMAQI
8th Jul 2025273 PMAQI
8th Jul 2025264 PMAQI
8th Jul 2025265 PMAQI
8th Jul 2025266 PMAQI
8th Jul 2025227 PMAQI
8th Jul 2025278 PMAQI
8th Jul 2025239 PMAQI
8th Jul 20252310 PMAQI
8th Jul 20252411 PMAQI
9th Jul 20252412 AMAQI
9th Jul 2025231 AMAQI
9th Jul 2025232 AMAQI
9th Jul 2025213 AMAQI
9th Jul 2025264 AMAQI
15°C11/20°C
9th Jul 2025285 AMAQI
9th Jul 2025296 AMAQI
9th Jul 2025247 AMAQI
9th Jul 2025248 AMAQI
9th Jul 2025229 AMAQI
9th Jul 20251910 AMAQI
9th Jul 20253311 AMAQI
9th Jul 20253112 PMAQI
9th Jul 2025261 PMAQI
9th Jul 2025232 PMAQI
9th Jul 2025273 PMAQI
9th Jul 2025334 PMAQI
9th Jul 2025315 PMAQI
9th Jul 2025346 PMAQI
9th Jul 2025327 PMAQI
9th Jul 2025278 PMAQI
9th Jul 2025239 PMAQI
9th Jul 20252310 PMAQI
9th Jul 20252311 PMAQI
10th Jul 20252412 AMAQI
10th Jul 2025221 AMAQI
10th Jul 2025242 AMAQI
10th Jul 2025203 AMAQI
10th Jul 2025294 AMAQI
18°C12/23°C
10th Jul 2025275 AMAQI
10th Jul 2025186 AMAQI
10th Jul 2025197 AMAQI
10th Jul 2025298 AMAQI
10th Jul 2025319 AMAQI
10th Jul 20253610 AMAQI
10th Jul 20254411 AMAQI
10th Jul 20254012 PMAQI
10th Jul 2025301 PMAQI
10th Jul 2025342 PMAQI
10th Jul 2025283 PMAQI
10th Jul 2025264 PMAQI
10th Jul 2025305 PMAQI
10th Jul 2025326 PMAQI
10th Jul 2025307 PMAQI
10th Jul 2025318 PMAQI
10th Jul 2025259 PMAQI
10th Jul 20252410 PMAQI
10th Jul 20252511 PMAQI
11th Jul 20252612 AMAQI
11th Jul 2025321 AMAQI
11th Jul 2025382 AMAQI
11th Jul 2025203 AMAQI
11th Jul 2025274 AMAQI
20°C15/25°C
11th Jul 2025215 AMAQI
11th Jul 2025306 AMAQI
11th Jul 2025357 AMAQI
11th Jul 2025348 AMAQI
11th Jul 2025329 AMAQI
11th Jul 20253610 AMAQI
11th Jul 20254711 AMAQI
11th Jul 20254712 PMAQI
11th Jul 2025471 PMAQI
11th Jul 2025512 PMAQI
11th Jul 2025403 PMAQI
11th Jul 2025294 PMAQI
11th Jul 2025295 PMAQI
11th Jul 2025296 PMAQI
11th Jul 2025317 PMAQI
11th Jul 2025368 PMAQI
11th Jul 2025339 PMAQI
11th Jul 20253410 PMAQI
11th Jul 20253311 PMAQI
12th Jul 20253412 AMAQI
12th Jul 2025471 AMAQI
12th Jul 2025472 AMAQI
12th Jul 2025323 AMAQI
12th Jul 2025264 AMAQI
22°C16/28°C
12th Jul 2025455 AMAQI
12th Jul 2025456 AMAQI
12th Jul 2025407 AMAQI
12th Jul 2025458 AMAQI
12th Jul 2025449 AMAQI
12th Jul 20253710 AMAQI
12th Jul 20254311 AMAQI
12th Jul 20254812 PMAQI
12th Jul 2025511 PMAQI
12th Jul 2025482 PMAQI
12th Jul 2025463 PMAQI
12th Jul 2025444 PMAQI
12th Jul 2025455 PMAQI
12th Jul 2025446 PMAQI
12th Jul 2025437 PMAQI
12th Jul 2025398 PMAQI
12th Jul 2025369 PMAQI
12th Jul 20253710 PMAQI
12th Jul 20253811 PMAQI
13th Jul 20254012 AMAQI
13th Jul 2025421 AMAQI
13th Jul 2025402 AMAQI
13th Jul 2025403 AMAQI
13th Jul 2025474 AMAQI
22°C16/29°C
13th Jul 2025475 AMAQI
13th Jul 2025296 AMAQI
13th Jul 2025357 AMAQI
13th Jul 2025328 AMAQI
13th Jul 2025269 AMAQI
13th Jul 20254110 AMAQI
13th Jul 20254111 AMAQI
13th Jul 20254512 PMAQI
13th Jul 2025371 PMAQI
13th Jul 2025392 PMAQI
13th Jul 2025373 PMAQI
13th Jul 2025364 PMAQI
13th Jul 2025355 PMAQI
13th Jul 2025366 PMAQI
13th Jul 2025377 PMAQI
13th Jul 2025368 PMAQI
13th Jul 2025389 PMAQI
13th Jul 20253810 PMAQI
13th Jul 20253711 PMAQI
14th Jul 20253712 AMAQI
14th Jul 2025451 AMAQI
14th Jul 2025512 AMAQI
14th Jul 2025513 AMAQI
14th Jul 2025504 AMAQI
20°C15/27°C
14th Jul 2025535 AMAQI
14th Jul 2025486 AMAQI
14th Jul 2025487 AMAQI
14th Jul 2025328 AMAQI
14th Jul 2025239 AMAQI
14th Jul 20252410 AMAQI
14th Jul 20253211 AMAQI
14th Jul 20254312 PMAQI
14th Jul 2025451 PMAQI
14th Jul 2025412 PMAQI
14th Jul 2025423 PMAQI
14th Jul 2025444 PMAQI
14th Jul 2025425 PMAQI
14th Jul 2025466 PMAQI
14th Jul 2025447 PMAQI
14th Jul 2025458 PMAQI
14th Jul 2025469 PMAQI
14th Jul 20254110 PMAQI
14th Jul 20254611 PMAQI
15th Jul 20254412 AMAQI
15th Jul 2025391 AMAQI
15th Jul 2025412 AMAQI
15th Jul 2025473 AMAQI
15th Jul 2025444 AMAQI
17°C15/20°C
15th Jul 2025385 AMAQI
15th Jul 2025306 AMAQI
15th Jul 2025357 AMAQI
15th Jul 2025348 AMAQI
15th Jul 2025349 AMAQI
15th Jul 20253810 AMAQI
15th Jul 20253411 AMAQI
15th Jul 20253412 PMAQI
15th Jul 2025331 PMAQI
15th Jul 2025352 PMAQI
15th Jul 2025373 PMAQI
15th Jul 2025394 PMAQI
15th Jul 2025425 PMAQI
15th Jul 2025436 PMAQI
15th Jul 2025417 PMAQI
15th Jul 2025388 PMAQI
15th Jul 2025369 PMAQI
15th Jul 20253510 PMAQI
15th Jul 20253611 PMAQI
16th Jul 20253612 AMAQI
16th Jul 2025421 AMAQI
16th Jul 2025452 AMAQI
16th Jul 2025283 AMAQI
16th Jul 2025364 AMAQI
16°C14/19°C
16th Jul 2025375 AMAQI
16th Jul 2025366 AMAQI
16th Jul 2025377 AMAQI
16th Jul 2025388 AMAQI
16th Jul 2025369 AMAQI
16th Jul 20253710 AMAQI
16th Jul 20253111 AMAQI
16th Jul 20253112 PMAQI
16th Jul 2025381 PMAQI
16th Jul 2025382 PMAQI
16th Jul 2025413 PMAQI
16th Jul 2025414 PMAQI
16th Jul 2025325 PMAQI
16th Jul 2025356 PMAQI
16th Jul 2025397 PMAQI
16th Jul 2025368 PMAQI
16th Jul 2025349 PMAQI
16th Jul 20253410 PMAQI
16th Jul 20253411 PMAQI
17th Jul 20253212 AMAQI
17th Jul 2025351 AMAQI
17th Jul 2025232 AMAQI
17th Jul 2025393 AMAQI
17th Jul 2025384 AMAQI
18°C14/22°C
17th Jul 2025335 AMAQI
17th Jul 2025356 AMAQI
17th Jul 2025317 AMAQI
17th Jul 2025228 AMAQI
17th Jul 2025209 AMAQI
17th Jul 20252810 AMAQI
17th Jul 20252711 AMAQI
17th Jul 20253712 PMAQI
17th Jul 2025331 PMAQI
17th Jul 2025302 PMAQI
17th Jul 2025303 PMAQI
17th Jul 2025314 PMAQI
17th Jul 2025295 PMAQI
17th Jul 2025276 PMAQI
17th Jul 2025327 PMAQI
17th Jul 2025288 PMAQI
17th Jul 2025289 PMAQI
17th Jul 20253110 PMAQI
17th Jul 20253011 PMAQI
18th Jul 20253112 AMAQI
18th Jul 2025321 AMAQI
18th Jul 2025332 AMAQI
18th Jul 2025263 AMAQI
18th Jul 2025324 AMAQI
18°C16/23°C
18th Jul 2025325 AMAQI
18th Jul 2025336 AMAQI
18th Jul 2025327 AMAQI
18th Jul 2025368 AMAQI
18th Jul 2025399 AMAQI
18th Jul 20253610 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20252312 PMAQI
18th Jul 2025301 PMAQI
18th Jul 2025312 PMAQI
18th Jul 2025333 PMAQI
18th Jul 2025344 PMAQI
18th Jul 2025335 PMAQI
18th Jul 2025346 PMAQI
18th Jul 2025437 PMAQI
18th Jul 2025358 PMAQI
18th Jul 2025299 PMAQI
18th Jul 20252910 PMAQI
18th Jul 20252911 PMAQI
19th Jul 20253012 AMAQI
19th Jul 2025281 AMAQI
19th Jul 2025432 AMAQI
19th Jul 2025403 AMAQI
19th Jul 2025204 AMAQI
18°C15/21°C
19th Jul 2025375 AMAQI
19th Jul 2025336 AMAQI
19th Jul 2025317 AMAQI
19th Jul 2025398 AMAQI
19th Jul 2025369 AMAQI
19th Jul 20251710 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20253312 PMAQI
19th Jul 2025331 PMAQI
19th Jul 2025352 PMAQI
19th Jul 2025423 PMAQI
19th Jul 2025384 PMAQI
19th Jul 2025365 PMAQI
19th Jul 2025356 PMAQI
19th Jul 2025327 PMAQI
19th Jul 2025338 PMAQI
19th Jul 2025359 PMAQI
19th Jul 20253110 PMAQI
19th Jul 20253311 PMAQI
20th Jul 20253012 AMAQI
20th Jul 2025291 AMAQI
20th Jul 2025252 AMAQI
20th Jul 2025223 AMAQI
20th Jul 2025284 AMAQI
18°C15/22°C
20th Jul 2025325 AMAQI
20th Jul 2025306 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025268 AMAQI
20th Jul 2025379 AMAQI
20th Jul 20254510 AMAQI
20th Jul 20254611 AMAQI
20th Jul 20253612 PMAQI
20th Jul 2025321 PMAQI
20th Jul 2025182 PMAQI
20th Jul 2025203 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025275 PMAQI
20th Jul 2025296 PMAQI
20th Jul 2025317 PMAQI
20th Jul 2025278 PMAQI
20th Jul 2025289 PMAQI
20th Jul 20252610 PMAQI
20th Jul 20252711 PMAQI
21st Jul 20252712 AMAQI
21st Jul 2025241 AMAQI
21st Jul 2025222 AMAQI
21st Jul 2025253 AMAQI
21st Jul 2025294 AMAQI
17°C14/18°C
21st Jul 2025335 AMAQI
21st Jul 2025276 AMAQI
21st Jul 2025327 AMAQI
21st Jul 2025298 AMAQI
21st Jul 2025199 AMAQI
21st Jul 20253410 AMAQI
21st Jul 20253811 AMAQI
21st Jul 20253212 PMAQI
21st Jul 2025361 PMAQI
21st Jul 2025332 PMAQI
21st Jul 2025243 PMAQI
21st Jul 2025284 PMAQI
21st Jul 2025335 PMAQI
21st Jul 2025336 PMAQI
21st Jul 2025297 PMAQI
21st Jul 2025288 PMAQI
21st Jul 2025269 PMAQI
21st Jul 20252910 PMAQI
21st Jul 20252611 PMAQI
22nd Jul 20252512 AMAQI
22nd Jul 2025281 AMAQI
22nd Jul 2025222 AMAQI
22nd Jul 2025153 AMAQI
22nd Jul 2025314 AMAQI
16°C12/20°C
22nd Jul 2025355 AMAQI
22nd Jul 2025296 AMAQI
22nd Jul 2025207 AMAQI
22nd Jul 2025168 AMAQI
22nd Jul 2025179 AMAQI
22nd Jul 20252710 AMAQI
22nd Jul 20251211 AMAQI
22nd Jul 20252012 PMAQI
22nd Jul 2025271 PMAQI
22nd Jul 2025312 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025284 PMAQI
22nd Jul 2025305 PMAQI
22nd Jul 2025336 PMAQI
22nd Jul 2025287 PMAQI
22nd Jul 2025268 PMAQI
22nd Jul 2025239 PMAQI
22nd Jul 20252410 PMAQI
22nd Jul 20252311 PMAQI
23rd Jul 20252312 AMAQI
23rd Jul 2025181 AMAQI
23rd Jul 2025182 AMAQI
23rd Jul 2025193 AMAQI
23rd Jul 2025164 AMAQI
17°C14/21°C
23rd Jul 2025165 AMAQI
23rd Jul 2025226 AMAQI
23rd Jul 2025197 AMAQI
23rd Jul 2025168 AMAQI
23rd Jul 2025249 AMAQI
23rd Jul 20253110 AMAQI
23rd Jul 20252911 AMAQI
23rd Jul 20252512 PMAQI
23rd Jul 2025231 PMAQI
23rd Jul 2025212 PMAQI
23rd Jul 2025243 PMAQI
23rd Jul 2025344 PMAQI
23rd Jul 2025395 PMAQI
23rd Jul 2025566 PMAQI
23rd Jul 2025587 PMAQI
23rd Jul 2025428 PMAQI
23rd Jul 2025269 PMAQI
23rd Jul 20252610 PMAQI
23rd Jul 20252611 PMAQI
24th Jul 20252412 AMAQI
24th Jul 2025281 AMAQI
24th Jul 2025442 AMAQI
24th Jul 2025473 AMAQI
24th Jul 2025544 AMAQI
17°C14/22°C
24th Jul 2025585 AMAQI
24th Jul 2025576 AMAQI
24th Jul 2025567 AMAQI
24th Jul 2025548 AMAQI
24th Jul 2025569 AMAQI
24th Jul 20256410 AMAQI
24th Jul 20255211 AMAQI
24th Jul 20255612 PMAQI
24th Jul 2025511 PMAQI
24th Jul 2025522 PMAQI
24th Jul 2025533 PMAQI
24th Jul 2025524 PMAQI
24th Jul 2025535 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025537 PMAQI
24th Jul 2025538 PMAQI
24th Jul 2025529 PMAQI
24th Jul 20255210 PMAQI
24th Jul 20255311 PMAQI
25th Jul 20255312 AMAQI
25th Jul 2025531 AMAQI
25th Jul 2025622 AMAQI
25th Jul 2025633 AMAQI
25th Jul 2025654 AMAQI
18°C13/21°C
25th Jul 2025765 AMAQI
25th Jul 2025676 AMAQI
25th Jul 2025717 AMAQI
25th Jul 2025738 AMAQI
25th Jul 2025679 AMAQI
25th Jul 20256510 AMAQI
25th Jul 20256311 AMAQI
25th Jul 20256112 PMAQI
25th Jul 2025621 PMAQI
25th Jul 2025622 PMAQI
25th Jul 2025623 PMAQI
25th Jul 2025604 PMAQI
25th Jul 2025605 PMAQI
25th Jul 2025586 PMAQI
25th Jul 2025577 PMAQI
25th Jul 2025598 PMAQI
25th Jul 2025609 PMAQI
25th Jul 20256310 PMAQI
25th Jul 20256011 PMAQI
26th Jul 20255912 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025262 AMAQI
26th Jul 2025233 AMAQI
26th Jul 2025244 AMAQI
18°C14/22°C
26th Jul 2025245 AMAQI
26th Jul 2025326 AMAQI
26th Jul 2025227 AMAQI
26th Jul 2025198 AMAQI
26th Jul 2025219 AMAQI
26th Jul 20252110 AMAQI
26th Jul 20252511 AMAQI
26th Jul 20252612 PMAQI
26th Jul 2025301 PMAQI
26th Jul 2025322 PMAQI
26th Jul 2025303 PMAQI
26th Jul 2025274 PMAQI
26th Jul 2025285 PMAQI
26th Jul 2025346 PMAQI
26th Jul 2025317 PMAQI
26th Jul 2025298 PMAQI
26th Jul 2025329 PMAQI
26th Jul 20253210 PMAQI
26th Jul 20253011 PMAQI
27th Jul 20253212 AMAQI
27th Jul 2025311 AMAQI
27th Jul 2025252 AMAQI
27th Jul 2025203 AMAQI
27th Jul 2025274 AMAQI
18°C14/22°C
27th Jul 2025265 AMAQI
27th Jul 2025286 AMAQI
27th Jul 2025257 AMAQI
27th Jul 2025258 AMAQI
27th Jul 2025259 AMAQI
27th Jul 20253310 AMAQI
27th Jul 20253111 AMAQI
27th Jul 20252712 PMAQI
27th Jul 2025271 PMAQI
27th Jul 2025382 PMAQI
27th Jul 2025323 PMAQI
27th Jul 2025344 PMAQI
27th Jul 2025335 PMAQI
27th Jul 2025346 PMAQI
27th Jul 2025307 PMAQI
27th Jul 2025298 PMAQI
27th Jul 2025279 PMAQI
27th Jul 20252810 PMAQI
27th Jul 20252811 PMAQI
28th Jul 20252812 AMAQI
28th Jul 2025301 AMAQI
28th Jul 2025292 AMAQI
28th Jul 2025283 AMAQI
28th Jul 2025304 AMAQI
16°C12/19°C
28th Jul 2025285 AMAQI
28th Jul 2025306 AMAQI
28th Jul 2025307 AMAQI
28th Jul 2025368 AMAQI
28th Jul 2025379 AMAQI
28th Jul 20253410 AMAQI
28th Jul 20253411 AMAQI
28th Jul 20252912 PMAQI
28th Jul 2025311 PMAQI
28th Jul 2025382 PMAQI
28th Jul 2025353 PMAQI
28th Jul 2025344 PMAQI
28th Jul 2025335 PMAQI
28th Jul 2025336 PMAQI
28th Jul 2025297 PMAQI
28th Jul 2025268 PMAQI
28th Jul 2025289 PMAQI
28th Jul 20253010 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20253112 AMAQI
29th Jul 2025291 AMAQI
29th Jul 2025222 AMAQI
29th Jul 2025253 AMAQI
29th Jul 2025274 AMAQI
17°C12/21°C
29th Jul 2025245 AMAQI
29th Jul 2025296 AMAQI
29th Jul 2025257 AMAQI
29th Jul 2025278 AMAQI
29th Jul 2025279 AMAQI
29th Jul 20252610 AMAQI
29th Jul 20252011 AMAQI
29th Jul 20251612 PMAQI
29th Jul 2025231 PMAQI
29th Jul 2025252 PMAQI
29th Jul 2025243 PMAQI
29th Jul 2025244 PMAQI
29th Jul 2025255 PMAQI
29th Jul 2025296 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025248 PMAQI
29th Jul 2025259 PMAQI
29th Jul 20252410 PMAQI
29th Jul 20252511 PMAQI
30th Jul 20252512 AMAQI
30th Jul 2025311 AMAQI
30th Jul 2025252 AMAQI
30th Jul 2025183 AMAQI
30th Jul 2025174 AMAQI
17°C13/22°C
30th Jul 2025295 AMAQI
30th Jul 2025226 AMAQI
30th Jul 2025267 AMAQI
30th Jul 2025228 AMAQI
30th Jul 2025289 AMAQI
30th Jul 20253410 AMAQI
30th Jul 20253511 AMAQI
30th Jul 20252712 PMAQI
30th Jul 2025251 PMAQI
30th Jul 2025312 PMAQI
30th Jul 2025283 PMAQI
30th Jul 2025254 PMAQI
30th Jul 2025285 PMAQI
30th Jul 2025266 PMAQI
30th Jul 2025337 PMAQI
30th Jul 2025468 PMAQI
30th Jul 2025509 PMAQI
30th Jul 20255010 PMAQI
30th Jul 20255011 PMAQI
31st Jul 20255012 AMAQI
31st Jul 2025501 AMAQI
31st Jul 2025502 AMAQI
31st Jul 2025373 AMAQI
31st Jul 2025324 AMAQI
18°C14/22°C
31st Jul 2025285 AMAQI
31st Jul 2025246 AMAQI
31st Jul 2025197 AMAQI
31st Jul 2025298 AMAQI
31st Jul 2025209 AMAQI
31st Jul 20251510 AMAQI
31st Jul 20251411 AMAQI
31st Jul 20251612 PMAQI
31st Jul 2025211 PMAQI
31st Jul 2025222 PMAQI
31st Jul 2025213 PMAQI
31st Jul 2025204 PMAQI
31st Jul 2025205 PMAQI
31st Jul 2025206 PMAQI
31st Jul 2025227 PMAQI
31st Jul 2025248 PMAQI
31st Jul 2025249 PMAQI
31st Jul 20252310 PMAQI
31st Jul 20252211 PMAQI
1st Aug 20252212 AMAQI
1st Aug 2025221 AMAQI
1st Aug 2025232 AMAQI
1st Aug 2025223 AMAQI
1st Aug 2025204 AMAQI
19°C14/23°C
1st Aug 2025215 AMAQI
1st Aug 2025206 AMAQI
1st Aug 2025207 AMAQI
1st Aug 2025208 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 2025236 PMAQI
1st Aug 2025247 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 2025213 AMAQI
2nd Aug 2025204 AMAQI
16°C11/20°C
2nd Aug 2025195 AMAQI
2nd Aug 2025196 AMAQI
2nd Aug 2025197 AMAQI
2nd Aug 2025198 AMAQI
2nd Aug 2025209 AMAQI
2nd Aug 20252010 AMAQI
2nd Aug 20252011 AMAQI
2nd Aug 20252212 PMAQI
2nd Aug 2025211 PMAQI
2nd Aug 2025202 PMAQI
2nd Aug 2025223 PMAQI
2nd Aug 2025224 PMAQI
2nd Aug 2025215 PMAQI
2nd Aug 2025226 PMAQI
2nd Aug 2025267 PMAQI
2nd Aug 2025248 PMAQI
2nd Aug 2025229 PMAQI
2nd Aug 20252210 PMAQI
2nd Aug 20252211 PMAQI
3rd Aug 20252112 AMAQI
3rd Aug 2025211 AMAQI
16°C11/20°C
5 AM
1 PM
9 PM
1 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
6 PM - 7 PM
34AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
6 AM - 9 AM
30AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 PM to 7 PM (Avg. 34), while the lowest AQI was between 6 AM to 9 AM (Avg. 30).
Night time
Avg. Highest Time
1 AM - 2 AM
32AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
3 AM - 11 PM
30AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 2 AM (Avg. 32), while the lowest AQI was between 3 AM to 11 PM (Avg. 30).
2025 Days Vs Air Quality
Caerdydd, Cardiff, United Kingdom
2025
84%
179
16%
34
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
179 DaysModerate
34 DaysPoor
0 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 215 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
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
34AQI
2nd January 2025
43AQI
43AQI
3rd January 2025
51AQI
51AQI
4th January 2025
52AQI
52AQI
5th January 2025
27AQI
27AQI
6th January 2025
27AQI
27AQI
7th January 2025
29AQI
29AQI
8th January 2025
44AQI
44AQI
9th January 2025
47AQI
47AQI
10th January 2025
51AQI
51AQI
11th January 2025
69AQI
69AQI
12th January 2025
70AQI
70AQI
13th January 2025
40AQI
40AQI
14th January 2025
44AQI
44AQI
15th January 2025
44AQI
44AQI
16th January 2025
60AQI
60AQI
17th January 2025
54AQI
54AQI
18th January 2025
58AQI
58AQI
19th January 2025
67AQI
67AQI
20th January 2025
64AQI
64AQI
21st January 2025
63AQI
63AQI
22nd January 2025
63AQI
63AQI
23rd January 2025
51AQI
51AQI
24th January 2025
51AQI
51AQI
25th January 2025
51AQI
51AQI
26th January 2025
49AQI
49AQI
27th January 2025
47AQI
47AQI
28th January 2025
30AQI
30AQI
29th January 2025
31AQI
31AQI
30th January 2025
32AQI
32AQI
31st January 2025
37AQI
37AQI
1st February 2025
46AQI
46AQI
2nd February 2025
31AQI
31AQI
3rd February 2025
41AQI
41AQI
4th February 2025
32AQI
32AQI
5th February 2025
39AQI
39AQI
6th February 2025
48AQI
48AQI
7th February 2025
37AQI
37AQI
8th February 2025
56AQI
56AQI
9th February 2025
73AQI
73AQI
10th February 2025
65AQI
65AQI
11th February 2025
63AQI
63AQI
12th February 2025
65AQI
65AQI
13th February 2025
68AQI
68AQI
14th February 2025
67AQI
67AQI
15th February 2025
73AQI
73AQI
16th February 2025
73AQI
73AQI
17th February 2025
71AQI
71AQI
18th February 2025
76AQI
76AQI
19th February 2025
80AQI
80AQI
20th February 2025
33AQI
33AQI
21st February 2025
37AQI
37AQI
22nd February 2025
45AQI
45AQI
23rd February 2025
36AQI
36AQI
24th February 2025
33AQI
33AQI
25th February 2025
33AQI
33AQI
26th February 2025
26AQI
26AQI
27th February 2025
28AQI
28AQI
28th February 2025
43AQI
43AQI
1st March 2025
43AQI
43AQI
2nd March 2025
47AQI
47AQI
3rd March 2025
39AQI
39AQI
4th March 2025
40AQI
40AQI
5th March 2025
48AQI
48AQI
6th March 2025
49AQI
49AQI
7th March 2025
38AQI
38AQI
8th March 2025
38AQI
38AQI
9th March 2025
53AQI
53AQI
10th March 2025
67AQI
67AQI
11th March 2025
42AQI
42AQI
12th March 2025
27AQI
27AQI
13th March 2025
24AQI
24AQI
14th March 2025
28AQI
28AQI
15th March 2025
25AQI
25AQI
16th March 2025
25AQI
25AQI
17th March 2025
21AQI
21AQI
18th March 2025
32AQI
32AQI
19th March 2025
45AQI
45AQI
20th March 2025
42AQI
42AQI
21st March 2025
40AQI
40AQI
22nd March 2025
32AQI
32AQI
23rd March 2025
36AQI
36AQI
24th March 2025
52AQI
52AQI
25th March 2025
32AQI
32AQI
26th March 2025
26AQI
26AQI
27th March 2025
22AQI
22AQI
28th March 2025
19AQI
19AQI
29th March 2025
21AQI
21AQI
30th March 2025
24AQI
24AQI
31st March 2025
28AQI
28AQI
1st April 2025
28AQI
28AQI
2nd April 2025
28AQI
28AQI
3rd April 2025
32AQI
32AQI
4th April 2025
41AQI
41AQI
5th April 2025
30AQI
30AQI
6th April 2025
20AQI
20AQI
7th April 2025
23AQI
23AQI
8th April 2025
30AQI
30AQI
9th April 2025
32AQI
32AQI
10th April 2025
31AQI
31AQI
11th April 2025
38AQI
38AQI
12th April 2025
35AQI
35AQI
13th April 2025
24AQI
24AQI
14th April 2025
17AQI
17AQI
15th April 2025
20AQI
20AQI
16th April 2025
17AQI
17AQI
17th April 2025
21AQI
21AQI
18th April 2025
20AQI
20AQI
19th April 2025
23AQI
23AQI
20th April 2025
23AQI
23AQI
21st April 2025
22AQI
22AQI
22nd April 2025
17AQI
17AQI
23rd April 2025
18AQI
18AQI
24th April 2025
27AQI
27AQI
25th April 2025
31AQI
31AQI
26th April 2025
29AQI
29AQI
27th April 2025
21AQI
21AQI
28th April 2025
21AQI
21AQI
29th April 2025
29AQI
29AQI
30th April 2025
34AQI
34AQI
1st May 2025
39AQI
39AQI
2nd May 2025
32AQI
32AQI
3rd May 2025
25AQI
25AQI
4th May 2025
20AQI
20AQI
5th May 2025
19AQI
19AQI
6th May 2025
21AQI
21AQI
7th May 2025
32AQI
32AQI
8th May 2025
25AQI
25AQI
9th May 2025
32AQI
32AQI
10th May 2025
37AQI
37AQI
11th May 2025
36AQI
36AQI
12th May 2025
36AQI
36AQI
13th May 2025
34AQI
34AQI
14th May 2025
38AQI
38AQI
15th May 2025
37AQI
37AQI
16th May 2025
36AQI
36AQI
17th May 2025
39AQI
39AQI
18th May 2025
43AQI
43AQI
19th May 2025
39AQI
39AQI
20th May 2025
36AQI
36AQI
21st May 2025
32AQI
32AQI
22nd May 2025
34AQI
34AQI
23rd May 2025
36AQI
36AQI
24th May 2025
28AQI
28AQI
25th May 2025
24AQI
24AQI
26th May 2025
25AQI
25AQI
27th May 2025
23AQI
23AQI
28th May 2025
25AQI
25AQI
29th May 2025
21AQI
21AQI
30th May 2025
22AQI
22AQI
31st May 2025
24AQI
24AQI
1st June 2025
29AQI
29AQI
2nd June 2025
25AQI
25AQI
3rd June 2025
26AQI
26AQI
4th June 2025
25AQI
25AQI
5th June 2025
19AQI
19AQI
6th June 2025
20AQI
20AQI
7th June 2025
17AQI
17AQI
8th June 2025
22AQI
22AQI
9th June 2025
57AQI
57AQI
10th June 2025
32AQI
32AQI
11th June 2025
32AQI
32AQI
12th June 2025
41AQI
41AQI
13th June 2025
37AQI
37AQI
14th June 2025
27AQI
27AQI
15th June 2025
31AQI
31AQI
16th June 2025
29AQI
29AQI
17th June 2025
28AQI
28AQI
18th June 2025
33AQI
33AQI
19th June 2025
42AQI
42AQI
20th June 2025
51AQI
51AQI
21st June 2025
44AQI
44AQI
22nd June 2025
44AQI
44AQI
23rd June 2025
22AQI
22AQI
24th June 2025
22AQI
22AQI
25th June 2025
16AQI
16AQI
26th June 2025
18AQI
18AQI
27th June 2025
20AQI
20AQI
28th June 2025
18AQI
18AQI
29th June 2025
22AQI
22AQI
30th June 2025
27AQI
27AQI
1st July 2025
27AQI
27AQI
2nd July 2025
20AQI
20AQI
3rd July 2025
20AQI
20AQI
4th July 2025
25AQI
25AQI
5th July 2025
23AQI
23AQI
6th July 2025
21AQI
21AQI
7th July 2025
23AQI
23AQI
8th July 2025
25AQI
25AQI
9th July 2025
26AQI
26AQI
10th July 2025
28AQI
28AQI
11th July 2025
33AQI
33AQI
12th July 2025
41AQI
41AQI
13th July 2025
38AQI
38AQI
14th July 2025
43AQI
43AQI
15th July 2025
38AQI
38AQI
16th July 2025
36AQI
36AQI
17th July 2025
31AQI
31AQI
18th July 2025
32AQI
32AQI
19th July 2025
33AQI
33AQI
20th July 2025
29AQI
29AQI
21st July 2025
29AQI
29AQI
22nd July 2025
25AQI
25AQI
23rd July 2025
28AQI
28AQI
24th July 2025
51AQI
51AQI
25th July 2025
62AQI
62AQI
26th July 2025
30AQI
30AQI
27th July 2025
29AQI
29AQI
28th July 2025
31AQI
31AQI
29th July 2025
25AQI
25AQI
30th July 2025
31AQI
31AQI
31st July 2025
26AQI
26AQI
1st August 2025
22AQI
22AQI
48AQI
51AQI
36AQI
26AQI
31AQI
29AQI
31AQI
22AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202536AQI
16
15
16
12
28
3
30
31
28
2
29
2
1
179
34
Highest AQI recorded in
February51AQI
Lowest AQI recorded in
August22AQI
202436AQI
26
5
24
5
26
5
30
26
5
28
2
31
30
1
25
5
31
20
9
1
31
328
37
1
Highest AQI recorded in
November46AQI
Lowest AQI recorded in
July26AQI
202343AQI
23
8
21
7
26
5
16
14
20
11
11
19
27
4
27
4
18
11
24
7
24
5
28
3
265
98
Highest AQI recorded in
June54AQI
Lowest AQI recorded in
August33AQI
202246AQI
23
8
16
6
14
16
1
20
10
28
3
25
5
22
2
2
26
2
25
6
18
12
15
16
234
86
1
Highest AQI recorded in
March57AQI
Lowest AQI recorded in
September37AQI
202136AQI
25
5
23
5
23
7
1
20
10
28
3
27
3
26
5
31
26
4
29
2
27
3
28
3
313
50
1
Highest AQI recorded in
March47AQI
Lowest AQI recorded in
October29AQI
202032AQI
8
5
14
7
18
29
1
31
25
6
29
1
31
22
8
29
2
236
30
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
July19AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
46AQILeast Polluted Year Recorded
2020(Avg.)
32AQICaerdydd's annual 2025 AQI (36) shows an average percentage change of -5.4% (improved AQI) compared to previous years: 2020 (32), 2021 (36), 2022 (46), 2023 (43), 2024 (36).
