Llangefni, Isle Of Anglesey, 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
Llangefni, Isle Of Anglesey, United Kingdom
2022
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
13th Aug 2026
61AQILowest AQI recorded on
31st Aug 2022
16AQISame Day Analysis (16th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 15th Aug - 16th Aug 2026
Llangefni, Isle Of Anglesey, United Kingdom
AQI
Day
Night
.
5 AM15th Aug 2026
9 PM
4 AM16th Aug 2026
Day time
Avg. Highest Time
5AM15th Aug
25AQI
Avg. Lowest Time
8PM15th Aug
12AQI
Night time
Avg. Highest Time
2AM16th Aug
54AQI
Avg. Lowest Time
9PM15th Aug
18AQI
In the last 24 hours,
Llangefni's AQI reached its highest point of 54 at 2 AM during the Night, while the lowest point, 12, was recorded at 8 PM during the Day between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Llangefni, Isle Of Anglesey, United Kingdom
JulAug
18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th
Day
Night
18th Jul 2026725 AMAQI
18th Jul 2026726 AMAQI
18th Jul 2026637 AMAQI
18th Jul 2026588 AMAQI
18th Jul 2026589 AMAQI
18th Jul 20265610 AMAQI
18th Jul 20265511 AMAQI
18th Jul 20265812 PMAQI
18th Jul 2026571 PMAQI
18th Jul 2026582 PMAQI
18th Jul 2026593 PMAQI
18th Jul 2026574 PMAQI
18th Jul 2026565 PMAQI
18th Jul 2026546 PMAQI
18th Jul 2026547 PMAQI
18th Jul 2026528 PMAQI
18th Jul 2026529 PMAQI
18th Jul 20265210 PMAQI
18th Jul 20264811 PMAQI
19th Jul 20264712 AMAQI
19th Jul 2026371 AMAQI
19th Jul 2026292 AMAQI
19th Jul 2026243 AMAQI
19th Jul 2026304 AMAQI
15°C11/18°C
19th Jul 2026425 AMAQI
19th Jul 2026426 AMAQI
19th Jul 2026387 AMAQI
19th Jul 2026308 AMAQI
19th Jul 2026309 AMAQI
19th Jul 20262910 AMAQI
19th Jul 20262911 AMAQI
19th Jul 20262712 PMAQI
19th Jul 2026301 PMAQI
19th Jul 2026262 PMAQI
19th Jul 2026303 PMAQI
19th Jul 2026284 PMAQI
19th Jul 2026235 PMAQI
19th Jul 2026246 PMAQI
19th Jul 2026237 PMAQI
19th Jul 2026238 PMAQI
19th Jul 2026219 PMAQI
19th Jul 20262110 PMAQI
19th Jul 20262511 PMAQI
20th Jul 20262912 AMAQI
20th Jul 2026271 AMAQI
20th Jul 2026262 AMAQI
20th Jul 2026263 AMAQI
20th Jul 2026224 AMAQI
16°C12/19°C
20th Jul 2026215 AMAQI
20th Jul 2026226 AMAQI
20th Jul 2026257 AMAQI
20th Jul 2026448 AMAQI
20th Jul 2026309 AMAQI
20th Jul 20262210 AMAQI
20th Jul 20262611 AMAQI
20th Jul 20262512 PMAQI
20th Jul 2026341 PMAQI
20th Jul 2026342 PMAQI
20th Jul 2026273 PMAQI
20th Jul 2026334 PMAQI
20th Jul 2026345 PMAQI
20th Jul 2026256 PMAQI
20th Jul 2026347 PMAQI
20th Jul 2026378 PMAQI
20th Jul 2026369 PMAQI
20th Jul 20263210 PMAQI
20th Jul 20262911 PMAQI
21st Jul 20263112 AMAQI
21st Jul 2026331 AMAQI
21st Jul 2026312 AMAQI
21st Jul 2026253 AMAQI
15°C11/18°C
21st Jul 2026295 AMAQI
21st Jul 2026316 AMAQI
21st Jul 2026307 AMAQI
21st Jul 2026318 AMAQI
21st Jul 2026279 AMAQI
21st Jul 20262910 AMAQI
21st Jul 20263611 AMAQI
21st Jul 20263212 PMAQI
21st Jul 2026441 PMAQI
21st Jul 2026442 PMAQI
21st Jul 2026473 PMAQI
21st Jul 2026424 PMAQI
21st Jul 2026425 PMAQI
21st Jul 2026426 PMAQI
21st Jul 2026367 PMAQI
21st Jul 2026308 PMAQI
21st Jul 2026329 PMAQI
21st Jul 20263210 PMAQI
21st Jul 20262911 PMAQI
22nd Jul 20262912 AMAQI
22nd Jul 2026271 AMAQI
22nd Jul 2026242 AMAQI
22nd Jul 2026223 AMAQI
22nd Jul 2026224 AMAQI
15°C11/18°C
22nd Jul 2026235 AMAQI
22nd Jul 2026246 AMAQI
22nd Jul 2026257 AMAQI
22nd Jul 2026268 AMAQI
22nd Jul 2026259 AMAQI
22nd Jul 20262510 AMAQI
22nd Jul 20262511 AMAQI
22nd Jul 20262512 PMAQI
22nd Jul 2026241 PMAQI
22nd Jul 2026242 PMAQI
22nd Jul 2026373 PMAQI
22nd Jul 2026394 PMAQI
22nd Jul 2026415 PMAQI
22nd Jul 2026396 PMAQI
22nd Jul 2026407 PMAQI
22nd Jul 2026398 PMAQI
22nd Jul 2026389 PMAQI
22nd Jul 20263910 PMAQI
22nd Jul 20264011 PMAQI
23rd Jul 20263312 AMAQI
23rd Jul 2026271 AMAQI
23rd Jul 2026282 AMAQI
23rd Jul 2026263 AMAQI
23rd Jul 2026254 AMAQI
15°C11/19°C
23rd Jul 2026235 AMAQI
23rd Jul 2026246 AMAQI
23rd Jul 2026257 AMAQI
23rd Jul 2026238 AMAQI
23rd Jul 2026259 AMAQI
23rd Jul 20262910 AMAQI
23rd Jul 20262911 AMAQI
23rd Jul 20262512 PMAQI
23rd Jul 2026531 PMAQI
23rd Jul 2026252 PMAQI
23rd Jul 2026233 PMAQI
23rd Jul 2026244 PMAQI
23rd Jul 2026255 PMAQI
23rd Jul 2026236 PMAQI
23rd Jul 2026217 PMAQI
23rd Jul 2026248 PMAQI
23rd Jul 2026279 PMAQI
23rd Jul 20262810 PMAQI
23rd Jul 20262911 PMAQI
24th Jul 20262912 AMAQI
24th Jul 2026251 AMAQI
24th Jul 2026222 AMAQI
24th Jul 2026223 AMAQI
24th Jul 2026254 AMAQI
15°C12/18°C
24th Jul 2026235 AMAQI
24th Jul 2026266 AMAQI
24th Jul 2026287 AMAQI
24th Jul 2026298 AMAQI
24th Jul 2026309 AMAQI
24th Jul 20263010 AMAQI
24th Jul 20262711 AMAQI
24th Jul 20262812 PMAQI
24th Jul 2026301 PMAQI
24th Jul 2026342 PMAQI
24th Jul 2026513 PMAQI
24th Jul 2026604 PMAQI
24th Jul 2026305 PMAQI
24th Jul 2026386 PMAQI
24th Jul 2026467 PMAQI
24th Jul 2026308 PMAQI
24th Jul 2026349 PMAQI
24th Jul 20263210 PMAQI
24th Jul 20263111 PMAQI
25th Jul 20263612 AMAQI
25th Jul 2026251 AMAQI
25th Jul 2026272 AMAQI
25th Jul 2026343 AMAQI
25th Jul 2026324 AMAQI
15°C11/19°C
25th Jul 2026305 AMAQI
25th Jul 2026296 AMAQI
25th Jul 2026257 AMAQI
25th Jul 2026248 AMAQI
25th Jul 2026289 AMAQI
25th Jul 20263410 AMAQI
25th Jul 20263411 AMAQI
25th Jul 20263912 PMAQI
25th Jul 2026401 PMAQI
25th Jul 2026402 PMAQI
25th Jul 2026303 PMAQI
25th Jul 2026394 PMAQI
25th Jul 2026405 PMAQI
25th Jul 2026426 PMAQI
25th Jul 2026397 PMAQI
25th Jul 2026248 PMAQI
25th Jul 2026309 PMAQI
25th Jul 20262910 PMAQI
25th Jul 20262411 PMAQI
26th Jul 20262712 AMAQI
26th Jul 2026241 AMAQI
26th Jul 2026282 AMAQI
26th Jul 2026313 AMAQI
26th Jul 2026404 AMAQI
15°C14/17°C
26th Jul 2026345 AMAQI
26th Jul 2026396 AMAQI
26th Jul 2026287 AMAQI
26th Jul 2026108 AMAQI
26th Jul 2026209 AMAQI
26th Jul 2026910 AMAQI
26th Jul 20261311 AMAQI
26th Jul 20261512 PMAQI
26th Jul 2026141 PMAQI
26th Jul 2026182 PMAQI
26th Jul 2026293 PMAQI
26th Jul 2026254 PMAQI
26th Jul 2026255 PMAQI
26th Jul 2026256 PMAQI
26th Jul 2026247 PMAQI
26th Jul 2026258 PMAQI
26th Jul 2026309 PMAQI
26th Jul 20265210 PMAQI
26th Jul 20264611 PMAQI
27th Jul 20263412 AMAQI
27th Jul 2026321 AMAQI
27th Jul 2026342 AMAQI
27th Jul 2026323 AMAQI
27th Jul 2026514 AMAQI
16°C15/18°C
27th Jul 2026555 AMAQI
27th Jul 2026526 AMAQI
27th Jul 2026547 AMAQI
27th Jul 2026568 AMAQI
27th Jul 2026449 AMAQI
27th Jul 20265610 AMAQI
27th Jul 20261811 AMAQI
27th Jul 2026912 PMAQI
27th Jul 2026161 PMAQI
27th Jul 2026242 PMAQI
27th Jul 2026103 PMAQI
27th Jul 2026144 PMAQI
27th Jul 2026125 PMAQI
27th Jul 2026316 PMAQI
27th Jul 2026287 PMAQI
27th Jul 2026258 PMAQI
27th Jul 2026289 PMAQI
27th Jul 20262810 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20262912 AMAQI
28th Jul 2026271 AMAQI
28th Jul 2026322 AMAQI
28th Jul 2026343 AMAQI
28th Jul 2026314 AMAQI
15°C13/18°C
28th Jul 2026295 AMAQI
28th Jul 2026276 AMAQI
28th Jul 2026257 AMAQI
28th Jul 2026288 AMAQI
28th Jul 2026319 AMAQI
28th Jul 20263610 AMAQI
28th Jul 20263411 AMAQI
28th Jul 20263012 PMAQI
28th Jul 2026271 PMAQI
28th Jul 2026272 PMAQI
28th Jul 2026303 PMAQI
28th Jul 2026264 PMAQI
28th Jul 2026275 PMAQI
28th Jul 2026396 PMAQI
28th Jul 2026427 PMAQI
28th Jul 2026408 PMAQI
28th Jul 2026259 PMAQI
28th Jul 20262610 PMAQI
28th Jul 20262511 PMAQI
29th Jul 20263212 AMAQI
29th Jul 2026281 AMAQI
29th Jul 2026252 AMAQI
29th Jul 2026263 AMAQI
29th Jul 2026304 AMAQI
18°C16/21°C
29th Jul 2026395 AMAQI
29th Jul 2026486 AMAQI
29th Jul 2026347 AMAQI
29th Jul 2026338 AMAQI
29th Jul 2026389 AMAQI
29th Jul 20262710 AMAQI
29th Jul 20262511 AMAQI
29th Jul 20262412 PMAQI
29th Jul 2026241 PMAQI
29th Jul 2026242 PMAQI
29th Jul 2026323 PMAQI
29th Jul 2026374 PMAQI
29th Jul 2026395 PMAQI
29th Jul 2026346 PMAQI
29th Jul 2026327 PMAQI
29th Jul 2026248 PMAQI
29th Jul 2026249 PMAQI
29th Jul 20262510 PMAQI
29th Jul 20262611 PMAQI
30th Jul 20262612 AMAQI
30th Jul 2026261 AMAQI
30th Jul 2026232 AMAQI
30th Jul 2026233 AMAQI
30th Jul 2026444 AMAQI
18°C15/21°C
30th Jul 2026465 AMAQI
30th Jul 2026466 AMAQI
30th Jul 2026417 AMAQI
30th Jul 2026338 AMAQI
30th Jul 2026409 AMAQI
30th Jul 20263410 AMAQI
30th Jul 20262611 AMAQI
30th Jul 20262812 PMAQI
30th Jul 2026231 PMAQI
30th Jul 2026262 PMAQI
30th Jul 2026233 PMAQI
30th Jul 2026264 PMAQI
30th Jul 2026385 PMAQI
30th Jul 2026256 PMAQI
30th Jul 2026197 PMAQI
30th Jul 2026308 PMAQI
30th Jul 2026309 PMAQI
30th Jul 20262210 PMAQI
30th Jul 20264511 PMAQI
31st Jul 20264212 AMAQI
31st Jul 2026421 AMAQI
31st Jul 2026382 AMAQI
31st Jul 2026523 AMAQI
31st Jul 2026374 AMAQI
16°C12/18°C
31st Jul 2026255 AMAQI
31st Jul 2026266 AMAQI
31st Jul 2026307 AMAQI
31st Jul 2026368 AMAQI
31st Jul 2026359 AMAQI
31st Jul 20262510 AMAQI
31st Jul 20262111 AMAQI
31st Jul 20264012 PMAQI
31st Jul 2026311 PMAQI
31st Jul 2026362 PMAQI
31st Jul 2026333 PMAQI
31st Jul 2026304 PMAQI
31st Jul 2026285 PMAQI
31st Jul 2026346 PMAQI
31st Jul 2026367 PMAQI
31st Jul 2026318 PMAQI
31st Jul 2026299 PMAQI
31st Jul 20262910 PMAQI
31st Jul 20263011 PMAQI
1st Aug 20262912 AMAQI
1st Aug 2026291 AMAQI
1st Aug 2026292 AMAQI
1st Aug 2026283 AMAQI
1st Aug 2026334 AMAQI
14°C11/18°C
1st Aug 2026425 AMAQI
1st Aug 2026456 AMAQI
1st Aug 2026337 AMAQI
1st Aug 2026248 AMAQI
1st Aug 2026319 AMAQI
1st Aug 20262910 AMAQI
1st Aug 20263811 AMAQI
1st Aug 20264412 PMAQI
1st Aug 2026321 PMAQI
1st Aug 2026282 PMAQI
1st Aug 2026253 PMAQI
1st Aug 2026354 PMAQI
1st Aug 2026345 PMAQI
1st Aug 2026476 PMAQI
1st Aug 2026367 PMAQI
1st Aug 2026328 PMAQI
1st Aug 2026359 PMAQI
1st Aug 20263810 PMAQI
1st Aug 20264811 PMAQI
2nd Aug 20264312 AMAQI
2nd Aug 2026241 AMAQI
2nd Aug 2026262 AMAQI
2nd Aug 2026253 AMAQI
2nd Aug 2026294 AMAQI
14°C11/18°C
2nd Aug 2026325 AMAQI
2nd Aug 2026306 AMAQI
2nd Aug 2026387 AMAQI
2nd Aug 2026328 AMAQI
2nd Aug 2026249 AMAQI
2nd Aug 20262310 AMAQI
2nd Aug 20262511 AMAQI
2nd Aug 20263612 PMAQI
2nd Aug 2026531 PMAQI
2nd Aug 2026342 PMAQI
2nd Aug 2026383 PMAQI
2nd Aug 2026254 PMAQI
2nd Aug 2026385 PMAQI
2nd Aug 2026396 PMAQI
2nd Aug 2026457 PMAQI
2nd Aug 2026408 PMAQI
2nd Aug 2026419 PMAQI
2nd Aug 20263410 PMAQI
2nd Aug 20262711 PMAQI
3rd Aug 20262512 AMAQI
3rd Aug 2026251 AMAQI
3rd Aug 2026252 AMAQI
3rd Aug 2026233 AMAQI
3rd Aug 2026234 AMAQI
15°C11/20°C
3rd Aug 2026265 AMAQI
3rd Aug 2026256 AMAQI
3rd Aug 2026257 AMAQI
3rd Aug 2026248 AMAQI
3rd Aug 2026249 AMAQI
3rd Aug 20262410 AMAQI
3rd Aug 20262511 AMAQI
3rd Aug 20262912 PMAQI
3rd Aug 2026231 PMAQI
3rd Aug 2026252 PMAQI
3rd Aug 2026223 PMAQI
3rd Aug 2026214 PMAQI
3rd Aug 2026255 PMAQI
3rd Aug 2026256 PMAQI
3rd Aug 2026237 PMAQI
3rd Aug 2026298 PMAQI
3rd Aug 2026259 PMAQI
3rd Aug 20262110 PMAQI
3rd Aug 20262511 PMAQI
4th Aug 20262412 AMAQI
4th Aug 2026241 AMAQI
4th Aug 2026252 AMAQI
4th Aug 2026273 AMAQI
4th Aug 2026294 AMAQI
18°C14/24°C
4th Aug 2026315 AMAQI
4th Aug 2026336 AMAQI
4th Aug 2026367 AMAQI
4th Aug 2026338 AMAQI
4th Aug 2026289 AMAQI
4th Aug 20262510 AMAQI
4th Aug 20262811 AMAQI
4th Aug 20262912 PMAQI
4th Aug 2026291 PMAQI
4th Aug 2026292 PMAQI
4th Aug 2026253 PMAQI
4th Aug 2026254 PMAQI
4th Aug 2026255 PMAQI
4th Aug 2026256 PMAQI
4th Aug 2026267 PMAQI
4th Aug 2026318 PMAQI
4th Aug 2026299 PMAQI
4th Aug 20262510 PMAQI
4th Aug 20262211 PMAQI
5th Aug 20261812 AMAQI
5th Aug 2026251 AMAQI
5th Aug 2026402 AMAQI
5th Aug 2026463 AMAQI
5th Aug 2026364 AMAQI
18°C16/21°C
5th Aug 2026495 AMAQI
5th Aug 2026406 AMAQI
5th Aug 2026217 AMAQI
5th Aug 2026258 AMAQI
5th Aug 2026269 AMAQI
5th Aug 20263110 AMAQI
5th Aug 20261911 AMAQI
5th Aug 20262012 PMAQI
5th Aug 2026241 PMAQI
5th Aug 2026222 PMAQI
5th Aug 2026293 PMAQI
5th Aug 2026324 PMAQI
5th Aug 2026275 PMAQI
5th Aug 2026386 PMAQI
5th Aug 2026297 PMAQI
5th Aug 2026298 PMAQI
5th Aug 2026279 PMAQI
5th Aug 20262210 PMAQI
5th Aug 20261511 PMAQI
6th Aug 20261612 AMAQI
6th Aug 2026201 AMAQI
6th Aug 2026202 AMAQI
6th Aug 2026213 AMAQI
6th Aug 2026274 AMAQI
15°C13/17°C
6th Aug 2026275 AMAQI
6th Aug 2026296 AMAQI
6th Aug 2026277 AMAQI
6th Aug 2026258 AMAQI
6th Aug 2026259 AMAQI
6th Aug 20262410 AMAQI
6th Aug 20262511 AMAQI
6th Aug 20263812 PMAQI
6th Aug 2026291 PMAQI
6th Aug 2026252 PMAQI
6th Aug 2026243 PMAQI
6th Aug 2026244 PMAQI
6th Aug 2026255 PMAQI
6th Aug 2026276 PMAQI
6th Aug 2026277 PMAQI
6th Aug 2026258 PMAQI
6th Aug 2026279 PMAQI
6th Aug 20262410 PMAQI
6th Aug 20262811 PMAQI
7th Aug 20262412 AMAQI
7th Aug 2026251 AMAQI
7th Aug 2026322 AMAQI
7th Aug 2026363 AMAQI
7th Aug 2026334 AMAQI
14°C11/17°C
7th Aug 2026545 AMAQI
7th Aug 2026226 AMAQI
7th Aug 2026257 AMAQI
7th Aug 2026298 AMAQI
7th Aug 2026299 AMAQI
7th Aug 20263210 AMAQI
7th Aug 20264211 AMAQI
7th Aug 20263612 PMAQI
7th Aug 2026251 PMAQI
7th Aug 2026272 PMAQI
7th Aug 2026383 PMAQI
7th Aug 2026344 PMAQI
7th Aug 2026245 PMAQI
7th Aug 2026386 PMAQI
7th Aug 2026357 PMAQI
7th Aug 2026288 PMAQI
7th Aug 2026249 PMAQI
7th Aug 20262510 PMAQI
7th Aug 20262411 PMAQI
8th Aug 20262712 AMAQI
8th Aug 2026231 AMAQI
8th Aug 2026242 AMAQI
8th Aug 2026273 AMAQI
8th Aug 2026484 AMAQI
15°C11/18°C
8th Aug 2026305 AMAQI
8th Aug 2026266 AMAQI
8th Aug 2026307 AMAQI
8th Aug 2026278 AMAQI
8th Aug 2026259 AMAQI
8th Aug 20262810 AMAQI
8th Aug 20263411 AMAQI
8th Aug 20264012 PMAQI
8th Aug 2026461 PMAQI
8th Aug 2026442 PMAQI
8th Aug 2026333 PMAQI
8th Aug 2026284 PMAQI
8th Aug 2026235 PMAQI
8th Aug 2026256 PMAQI
8th Aug 2026277 PMAQI
8th Aug 2026298 PMAQI
8th Aug 2026289 PMAQI
8th Aug 20262510 PMAQI
8th Aug 20262611 PMAQI
9th Aug 20262612 AMAQI
9th Aug 2026281 AMAQI
9th Aug 2026322 AMAQI
9th Aug 2026523 AMAQI
9th Aug 2026464 AMAQI
16°C12/20°C
9th Aug 2026565 AMAQI
9th Aug 2026336 AMAQI
9th Aug 2026397 AMAQI
9th Aug 2026328 AMAQI
9th Aug 2026369 AMAQI
9th Aug 20264810 AMAQI
9th Aug 20263811 AMAQI
9th Aug 20262612 PMAQI
9th Aug 2026431 PMAQI
9th Aug 2026442 PMAQI
9th Aug 2026463 PMAQI
9th Aug 2026424 PMAQI
9th Aug 2026375 PMAQI
9th Aug 2026386 PMAQI
9th Aug 2026387 PMAQI
9th Aug 2026348 PMAQI
9th Aug 2026309 PMAQI
9th Aug 20262610 PMAQI
9th Aug 20262611 PMAQI
10th Aug 20262412 AMAQI
10th Aug 2026231 AMAQI
10th Aug 2026242 AMAQI
10th Aug 2026253 AMAQI
10th Aug 2026284 AMAQI
16°C13/20°C
10th Aug 2026255 AMAQI
10th Aug 2026306 AMAQI
10th Aug 2026317 AMAQI
10th Aug 2026278 AMAQI
10th Aug 2026289 AMAQI
10th Aug 20263210 AMAQI
10th Aug 20262411 AMAQI
10th Aug 20263512 PMAQI
10th Aug 2026401 PMAQI
10th Aug 2026282 PMAQI
10th Aug 2026403 PMAQI
10th Aug 2026404 PMAQI
10th Aug 2026365 PMAQI
10th Aug 2026296 PMAQI
10th Aug 2026337 PMAQI
10th Aug 2026318 PMAQI
10th Aug 2026339 PMAQI
10th Aug 20262810 PMAQI
10th Aug 20262811 PMAQI
11th Aug 20262512 AMAQI
11th Aug 2026271 AMAQI
11th Aug 2026282 AMAQI
11th Aug 2026383 AMAQI
11th Aug 2026484 AMAQI
15°C11/18°C
11th Aug 2026375 AMAQI
11th Aug 2026426 AMAQI
11th Aug 2026527 AMAQI
11th Aug 2026368 AMAQI
11th Aug 2026459 AMAQI
11th Aug 20264310 AMAQI
11th Aug 20264811 AMAQI
11th Aug 20265012 PMAQI
11th Aug 2026441 PMAQI
11th Aug 2026382 PMAQI
11th Aug 2026373 PMAQI
11th Aug 2026364 PMAQI
11th Aug 2026275 PMAQI
11th Aug 2026226 PMAQI
11th Aug 2026217 PMAQI
11th Aug 2026238 PMAQI
11th Aug 2026259 PMAQI
11th Aug 20262610 PMAQI
11th Aug 20262411 PMAQI
12th Aug 20262512 AMAQI
12th Aug 2026321 AMAQI
12th Aug 2026342 AMAQI
12th Aug 2026323 AMAQI
12th Aug 2026294 AMAQI
18°C12/23°C
12th Aug 2026285 AMAQI
12th Aug 2026266 AMAQI
12th Aug 2026257 AMAQI
12th Aug 2026268 AMAQI
12th Aug 2026269 AMAQI
12th Aug 20262110 AMAQI
12th Aug 20262111 AMAQI
12th Aug 20262512 PMAQI
12th Aug 2026301 PMAQI
12th Aug 2026542 PMAQI
12th Aug 2026603 PMAQI
12th Aug 2026314 PMAQI
12th Aug 2026345 PMAQI
12th Aug 2026386 PMAQI
12th Aug 2026537 PMAQI
12th Aug 2026568 PMAQI
12th Aug 2026709 PMAQI
12th Aug 20267710 PMAQI
12th Aug 20266811 PMAQI
13th Aug 20267112 AMAQI
13th Aug 2026721 AMAQI
13th Aug 2026692 AMAQI
13th Aug 2026623 AMAQI
13th Aug 2026804 AMAQI
21°C16/27°C
13th Aug 2026685 AMAQI
13th Aug 2026686 AMAQI
13th Aug 2026687 AMAQI
13th Aug 2026668 AMAQI
13th Aug 2026669 AMAQI
13th Aug 20266410 AMAQI
13th Aug 20268011 AMAQI
13th Aug 20267712 PMAQI
13th Aug 2026741 PMAQI
13th Aug 2026772 PMAQI
13th Aug 2026633 PMAQI
13th Aug 2026454 PMAQI
13th Aug 2026525 PMAQI
13th Aug 2026526 PMAQI
13th Aug 2026487 PMAQI
13th Aug 2026448 PMAQI
13th Aug 2026409 PMAQI
13th Aug 20263610 PMAQI
13th Aug 20262311 PMAQI
14th Aug 20262412 AMAQI
14th Aug 2026301 AMAQI
14th Aug 2026342 AMAQI
14th Aug 2026253 AMAQI
14th Aug 2026244 AMAQI
21°C18/24°C
14th Aug 2026245 AMAQI
14th Aug 2026296 AMAQI
14th Aug 2026297 AMAQI
14th Aug 2026258 AMAQI
14th Aug 2026289 AMAQI
14th Aug 20263710 AMAQI
14th Aug 20262111 AMAQI
14th Aug 20262412 PMAQI
14th Aug 2026251 PMAQI
14th Aug 2026252 PMAQI
14th Aug 2026263 PMAQI
14th Aug 2026234 PMAQI
14th Aug 2026255 PMAQI
14th Aug 2026246 PMAQI
14th Aug 2026287 PMAQI
14th Aug 2026268 PMAQI
14th Aug 2026279 PMAQI
14th Aug 20262710 PMAQI
14th Aug 20262611 PMAQI
15th Aug 20262012 AMAQI
15th Aug 2026161 AMAQI
15th Aug 2026162 AMAQI
15th Aug 2026183 AMAQI
15th Aug 2026224 AMAQI
17°C14/20°C
15th Aug 2026255 AMAQI
15th Aug 2026226 AMAQI
15th Aug 2026247 AMAQI
15th Aug 2026188 AMAQI
15th Aug 2026149 AMAQI
15th Aug 20261610 AMAQI
15th Aug 20261611 AMAQI
15th Aug 20261912 PMAQI
15th Aug 2026181 PMAQI
15th Aug 2026172 PMAQI
15th Aug 2026163 PMAQI
15th Aug 2026134 PMAQI
15th Aug 2026175 PMAQI
15th Aug 2026146 PMAQI
15th Aug 2026167 PMAQI
15th Aug 2026128 PMAQI
15th Aug 2026189 PMAQI
15th Aug 20264910 PMAQI
15th Aug 20264811 PMAQI
16th Aug 20264412 AMAQI
16th Aug 2026491 AMAQI
16th Aug 2026542 AMAQI
16th Aug 2026443 AMAQI
16th Aug 2026244 AMAQI
15°C11/17°C
16th Aug 2026325 AMAQI
5 AM16th Aug 2026396 AMAQI
16th Aug 2026267 AMAQI
16th Aug 2026438 AMAQI
16th Aug 2026239 AMAQI
16th Aug 20263810 AMAQI
16th Aug 20262711 AMAQI
16th Aug 20264912 PMAQI
16th Aug 2026511 PMAQI
1 PM16th Aug 2026402 PMAQI
16th Aug 2026563 PMAQI
16th Aug 2026434 PMAQI
16th Aug 2026285 PMAQI
16th Aug 2026276 PMAQI
16th Aug 2026247 PMAQI
16th Aug 2026248 PMAQI
16th Aug 2026229 PMAQI
9 PM16th Aug 20261810 PMAQI
16th Aug 20262811 PMAQI
1 AM
4 AM
8°C-4/18°C
Day time
Avg. Highest Time
5 AM - 6 AM
36AQI
2 hours / Day
60 hours / Month
Avg. Lowest Time
11 AM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 AM (Avg. 36), while the lowest AQI was between 11 AM to 11 AM (Avg. 30).
Night time
Avg. Highest Time
4 AM
35AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
1 AM
30AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 4 AM (Avg. 35), while the lowest AQI was between 1 AM to 1 AM (Avg. 30).
2026 Days Vs Air Quality
Llangefni, Isle Of Anglesey, United Kingdom
2026
93%
210
6%
14
0.4%
1
Total number of days with different AQI categories in last 228 days in 2026 (137 days remaining)
Good
210 DaysModerate
14 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2026, 93% of 228 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
Llangefni, Isle Of Anglesey, United Kingdom
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
14AQI (US)
14AQI (US)
2nd January 2026
12AQI (US)
12AQI (US)
3rd January 2026
11AQI (US)
11AQI (US)
4th January 2026
13AQI (US)
13AQI (US)
5th January 2026
14AQI (US)
14AQI (US)
6th January 2026
32AQI (US)
32AQI (US)
7th January 2026
18AQI (US)
18AQI (US)
8th January 2026
28AQI (US)
28AQI (US)
9th January 2026
16AQI (US)
16AQI (US)
10th January 2026
34AQI (US)
34AQI (US)
11th January 2026
24AQI (US)
24AQI (US)
12th January 2026
20AQI (US)
20AQI (US)
13th January 2026
18AQI (US)
18AQI (US)
14th January 2026
18AQI (US)
18AQI (US)
15th January 2026
28AQI (US)
28AQI (US)
16th January 2026
28AQI (US)
28AQI (US)
17th January 2026
21AQI (US)
21AQI (US)
18th January 2026
41AQI (US)
41AQI (US)
19th January 2026
30AQI (US)
30AQI (US)
20th January 2026
24AQI (US)
24AQI (US)
21st January 2026
10AQI (US)
10AQI (US)
22nd January 2026
32AQI (US)
32AQI (US)
23rd January 2026
46AQI (US)
46AQI (US)
24th January 2026
47AQI (US)
47AQI (US)
25th January 2026
44AQI (US)
44AQI (US)
26th January 2026
72AQI (US)
72AQI (US)
27th January 2026
40AQI (US)
40AQI (US)
28th January 2026
20AQI (US)
20AQI (US)
29th January 2026
46AQI (US)
46AQI (US)
30th January 2026
48AQI (US)
48AQI (US)
31st January 2026
20AQI (US)
20AQI (US)
1st February 2026
36AQI (US)
36AQI (US)
2nd February 2026
43AQI (US)
43AQI (US)
3rd February 2026
60AQI (US)
60AQI (US)
4th February 2026
44AQI (US)
44AQI (US)
5th February 2026
38AQI (US)
38AQI (US)
6th February 2026
14AQI (US)
14AQI (US)
7th February 2026
24AQI (US)
24AQI (US)
8th February 2026
32AQI (US)
32AQI (US)
9th February 2026
38AQI (US)
38AQI (US)
10th February 2026
38AQI (US)
38AQI (US)
11th February 2026
38AQI (US)
38AQI (US)
12th February 2026
30AQI (US)
30AQI (US)
13th February 2026
38AQI (US)
38AQI (US)
14th February 2026
34AQI (US)
34AQI (US)
15th February 2026
29AQI (US)
29AQI (US)
16th February 2026
34AQI (US)
34AQI (US)
17th February 2026
40AQI (US)
40AQI (US)
18th February 2026
33AQI (US)
33AQI (US)
19th February 2026
30AQI (US)
30AQI (US)
20th February 2026
36AQI (US)
36AQI (US)
21st February 2026
27AQI (US)
27AQI (US)
22nd February 2026
28AQI (US)
28AQI (US)
23rd February 2026
36AQI (US)
36AQI (US)
24th February 2026
30AQI (US)
30AQI (US)
25th February 2026
34AQI (US)
34AQI (US)
26th February 2026
16AQI (US)
16AQI (US)
27th February 2026
23AQI (US)
23AQI (US)
28th February 2026
21AQI (US)
21AQI (US)
1st March 2026
24AQI (US)
24AQI (US)
2nd March 2026
39AQI (US)
39AQI (US)
3rd March 2026
48AQI (US)
48AQI (US)
4th March 2026
41AQI (US)
41AQI (US)
5th March 2026
80AQI (US)
80AQI (US)
6th March 2026
28AQI (US)
28AQI (US)
7th March 2026
30AQI (US)
30AQI (US)
8th March 2026
58AQI (US)
58AQI (US)
9th March 2026
54AQI (US)
54AQI (US)
10th March 2026
17AQI (US)
17AQI (US)
11th March 2026
28AQI (US)
28AQI (US)
12th March 2026
35AQI (US)
35AQI (US)
13th March 2026
32AQI (US)
32AQI (US)
14th March 2026
32AQI (US)
32AQI (US)
15th March 2026
30AQI (US)
30AQI (US)
16th March 2026
27AQI (US)
27AQI (US)
17th March 2026
39AQI (US)
39AQI (US)
18th March 2026
44AQI (US)
44AQI (US)
19th March 2026
40AQI (US)
40AQI (US)
20th March 2026
71AQI (US)
71AQI (US)
21st March 2026
90AQI (US)
90AQI (US)
22nd March 2026
102AQI (US)
102AQI (US)
23rd March 2026
40AQI (US)
40AQI (US)
24th March 2026
14AQI (US)
14AQI (US)
25th March 2026
26AQI (US)
26AQI (US)
26th March 2026
22AQI (US)
22AQI (US)
27th March 2026
24AQI (US)
24AQI (US)
28th March 2026
30AQI (US)
30AQI (US)
29th March 2026
23AQI (US)
23AQI (US)
30th March 2026
44AQI (US)
44AQI (US)
31st March 2026
18AQI (US)
18AQI (US)
1st April 2026
22AQI (US)
22AQI (US)
2nd April 2026
20AQI (US)
20AQI (US)
3rd April 2026
24AQI (US)
24AQI (US)
4th April 2026
24AQI (US)
24AQI (US)
5th April 2026
26AQI (US)
26AQI (US)
6th April 2026
25AQI (US)
25AQI (US)
7th April 2026
24AQI (US)
24AQI (US)
8th April 2026
38AQI (US)
38AQI (US)
9th April 2026
36AQI (US)
36AQI (US)
10th April 2026
24AQI (US)
24AQI (US)
11th April 2026
30AQI (US)
30AQI (US)
12th April 2026
28AQI (US)
28AQI (US)
13th April 2026
28AQI (US)
28AQI (US)
14th April 2026
24AQI (US)
24AQI (US)
15th April 2026
26AQI (US)
26AQI (US)
16th April 2026
36AQI (US)
36AQI (US)
17th April 2026
18th April 2026
26AQI (US)
26AQI (US)
19th April 2026
24AQI (US)
24AQI (US)
20th April 2026
24AQI (US)
24AQI (US)
21st April 2026
22AQI (US)
22AQI (US)
22nd April 2026
23rd April 2026
28AQI (US)
28AQI (US)
24th April 2026
21AQI (US)
21AQI (US)
25th April 2026
28AQI (US)
28AQI (US)
26th April 2026
32AQI (US)
32AQI (US)
27th April 2026
38AQI (US)
38AQI (US)
28th April 2026
22AQI (US)
22AQI (US)
29th April 2026
19AQI (US)
19AQI (US)
30th April 2026
26AQI (US)
26AQI (US)
1st May 2026
26AQI (US)
26AQI (US)
2nd May 2026
42AQI (US)
42AQI (US)
3rd May 2026
24AQI (US)
24AQI (US)
4th May 2026
22AQI (US)
22AQI (US)
5th May 2026
26AQI (US)
26AQI (US)
6th May 2026
24AQI (US)
24AQI (US)
7th May 2026
22AQI (US)
22AQI (US)
8th May 2026
22AQI (US)
22AQI (US)
9th May 2026
10th May 2026
19AQI (US)
19AQI (US)
11th May 2026
16AQI (US)
16AQI (US)
12th May 2026
20AQI (US)
20AQI (US)
13th May 2026
21AQI (US)
21AQI (US)
14th May 2026
18AQI (US)
18AQI (US)
15th May 2026
28AQI (US)
28AQI (US)
16th May 2026
35AQI (US)
35AQI (US)
17th May 2026
38AQI (US)
38AQI (US)
18th May 2026
33AQI (US)
33AQI (US)
19th May 2026
33AQI (US)
33AQI (US)
20th May 2026
32AQI (US)
32AQI (US)
21st May 2026
34AQI (US)
34AQI (US)
22nd May 2026
30AQI (US)
30AQI (US)
23rd May 2026
38AQI (US)
38AQI (US)
24th May 2026
48AQI (US)
48AQI (US)
25th May 2026
34AQI (US)
34AQI (US)
26th May 2026
32AQI (US)
32AQI (US)
27th May 2026
25AQI (US)
25AQI (US)
28th May 2026
25AQI (US)
25AQI (US)
29th May 2026
22AQI (US)
22AQI (US)
30th May 2026
20AQI (US)
20AQI (US)
31st May 2026
24AQI (US)
24AQI (US)
1st June 2026
24AQI (US)
24AQI (US)
2nd June 2026
20AQI (US)
20AQI (US)
3rd June 2026
19AQI (US)
19AQI (US)
4th June 2026
19AQI (US)
19AQI (US)
5th June 2026
20AQI (US)
20AQI (US)
6th June 2026
20AQI (US)
20AQI (US)
7th June 2026
20AQI (US)
20AQI (US)
8th June 2026
20AQI (US)
20AQI (US)
9th June 2026
17AQI (US)
17AQI (US)
10th June 2026
19AQI (US)
19AQI (US)
11th June 2026
20AQI (US)
20AQI (US)
12th June 2026
20AQI (US)
20AQI (US)
13th June 2026
20AQI (US)
20AQI (US)
14th June 2026
20AQI (US)
20AQI (US)
15th June 2026
21AQI (US)
21AQI (US)
16th June 2026
23AQI (US)
23AQI (US)
17th June 2026
18AQI (US)
18AQI (US)
18th June 2026
22AQI (US)
22AQI (US)
19th June 2026
20AQI (US)
20AQI (US)
20th June 2026
18AQI (US)
18AQI (US)
21st June 2026
17AQI (US)
17AQI (US)
22nd June 2026
20AQI (US)
20AQI (US)
23rd June 2026
22AQI (US)
22AQI (US)
24th June 2026
22AQI (US)
22AQI (US)
25th June 2026
40AQI (US)
40AQI (US)
26th June 2026
52AQI (US)
52AQI (US)
27th June 2026
28AQI (US)
28AQI (US)
28th June 2026
14AQI (US)
14AQI (US)
29th June 2026
21AQI (US)
21AQI (US)
30th June 2026
20AQI (US)
20AQI (US)
1st July 2026
20AQI (US)
20AQI (US)
2nd July 2026
19AQI (US)
19AQI (US)
3rd July 2026
23AQI (US)
23AQI (US)
4th July 2026
16AQI (US)
16AQI (US)
5th July 2026
12AQI (US)
12AQI (US)
6th July 2026
14AQI (US)
14AQI (US)
7th July 2026
22AQI (US)
22AQI (US)
8th July 2026
24AQI (US)
24AQI (US)
9th July 2026
24AQI (US)
24AQI (US)
10th July 2026
28AQI (US)
28AQI (US)
11th July 2026
28AQI (US)
28AQI (US)
12th July 2026
28AQI (US)
28AQI (US)
13th July 2026
76AQI (US)
76AQI (US)
14th July 2026
54AQI (US)
54AQI (US)
15th July 2026
57AQI (US)
57AQI (US)
16th July 2026
51AQI (US)
51AQI (US)
17th July 2026
50AQI (US)
50AQI (US)
18th July 2026
58AQI (US)
58AQI (US)
19th July 2026
30AQI (US)
30AQI (US)
20th July 2026
29AQI (US)
29AQI (US)
21st July 2026
34AQI (US)
34AQI (US)
22nd July 2026
30AQI (US)
30AQI (US)
23rd July 2026
26AQI (US)
26AQI (US)
24th July 2026
32AQI (US)
32AQI (US)
25th July 2026
32AQI (US)
32AQI (US)
26th July 2026
26AQI (US)
26AQI (US)
27th July 2026
32AQI (US)
32AQI (US)
28th July 2026
30AQI (US)
30AQI (US)
29th July 2026
30AQI (US)
30AQI (US)
30th July 2026
31AQI (US)
31AQI (US)
31st July 2026
34AQI (US)
34AQI (US)
1st August 2026
34AQI (US)
34AQI (US)
2nd August 2026
34AQI (US)
34AQI (US)
3rd August 2026
24AQI (US)
24AQI (US)
4th August 2026
28AQI (US)
28AQI (US)
5th August 2026
28AQI (US)
28AQI (US)
6th August 2026
26AQI (US)
26AQI (US)
7th August 2026
31AQI (US)
31AQI (US)
8th August 2026
30AQI (US)
30AQI (US)
9th August 2026
38AQI (US)
38AQI (US)
10th August 2026
30AQI (US)
30AQI (US)
11th August 2026
35AQI (US)
35AQI (US)
12th August 2026
38AQI (US)
38AQI (US)
13th August 2026
61AQI (US)
61AQI (US)
14th August 2026
26AQI (US)
26AQI (US)
15th August 2026
20AQI (US)
20AQI (US)
16th August 2026
36AQI (US)
36AQI (US)
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
28AQI (US)
33AQI (US)
40AQI (US)
27AQI (US)
28AQI (US)
22AQI (US)
32AQI (US)
32AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202630AQI (US)
30
1
27
1
25
5
1
28
30
29
1
26
5
15
1
210
14
1
Highest AQI (US) recorded in
March40AQI (US)
Lowest AQI (US) recorded in
June22AQI (US)
202530AQI (US)
31
22
6
23
8
29
1
31
29
1
29
2
30
1
30
24
7
29
1
29
2
336
29
Highest AQI (US) recorded in
February40AQI (US)
Lowest AQI (US) recorded in
September19AQI (US)
202430AQI (US)
16
1
4
2
12
30
31
31
21
8
31
20
10
31
230
18
Highest AQI (US) recorded in
November46AQI (US)
Lowest AQI (US) recorded in
April11AQI (US)
202333AQI (US)
3
26
5
29
5
Highest AQI (US) recorded in
November33AQI (US)
Lowest AQI (US) recorded in
December33AQI (US)
202230AQI (US)
28
3
14
8
21
1
21
1
1
28
2
19
1
1
28
16
6
7
4
23
4
207
30
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
May13AQI (US)
202126AQI (US)
25
15
9
1
18
13
28
1
28
3
30
31
29
2
29
1
29
2
28
2
27
4
317
37
1
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
July16AQI (US)
202028AQI (US)
13
16
5
14
3
28
2
31
24
2
30
24
1
28
1
28
3
236
17
Highest AQI (US) recorded in
April41AQI (US)
Lowest AQI (US) recorded in
July22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Most Polluted Year Recorded
2023(Avg.)
33AQI (US)Least Polluted Year Recorded
2021(Avg.)
26AQI (US)Llangefni's annual 2026 AQI (US) (30) shows an average percentage change of 2.2% (worsened AQI (US)) compared to previous years: 2020 (28), 2021 (26), 2022 (30), 2023 (33), 2024 (30), 2025 (30).
