Ershui, Changhua, Taiwan 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
Ershui, Changhua, Taiwan
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
31st Aug 2024
70AQILowest AQI recorded on
4th Aug 2023
19AQISame Day Analysis (8th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 8th Aug - 9th Aug 2025
Ershui, Changhua, Taiwan
AQI
Day
Night
.
5 AM8th Aug 2025
6 PM
4 AM9th Aug 2025
Day time
Avg. Highest Time
1PM8th Aug
67AQI
Avg. Lowest Time
10AM8th Aug
45AQI
Night time
Avg. Highest Time
9PM8th Aug
54AQI
Avg. Lowest Time
7PM8th Aug
50AQI
In the last 24 hours,
Ershui's AQI reached its highest point of 67 at 1 PM during the Day, while the lowest point, 45, was recorded at 10 AM during the Day between 8th Aug and 9th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ershui, Changhua, Taiwan
JulAug
10th - 11th11th - 12th12th - 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
Day
Night
10th Jul 2025395 AMAQI
10th Jul 2025406 AMAQI
10th Jul 2025397 AMAQI
10th Jul 2025268 AMAQI
10th Jul 2025269 AMAQI
10th Jul 20252410 AMAQI
10th Jul 20252311 AMAQI
10th Jul 20252212 PMAQI
10th Jul 2025241 PMAQI
10th Jul 2025252 PMAQI
10th Jul 2025223 PMAQI
10th Jul 2025214 PMAQI
10th Jul 2025205 PMAQI
10th Jul 2025256 PMAQI
10th Jul 2025327 PMAQI
10th Jul 2025338 PMAQI
10th Jul 2025329 PMAQI
10th Jul 20253010 PMAQI
10th Jul 20253111 PMAQI
11th Jul 20253212 AMAQI
11th Jul 2025411 AMAQI
11th Jul 2025412 AMAQI
11th Jul 2025393 AMAQI
11th Jul 2025364 AMAQI
22°C20/24°C
11th Jul 2025365 AMAQI
11th Jul 2025366 AMAQI
11th Jul 2025377 AMAQI
11th Jul 2025238 AMAQI
11th Jul 2025179 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20252011 AMAQI
11th Jul 20252012 PMAQI
11th Jul 2025221 PMAQI
11th Jul 2025232 PMAQI
11th Jul 2025303 PMAQI
11th Jul 2025344 PMAQI
11th Jul 2025355 PMAQI
11th Jul 2025356 PMAQI
11th Jul 2025367 PMAQI
11th Jul 2025368 PMAQI
11th Jul 2025349 PMAQI
11th Jul 20253010 PMAQI
11th Jul 20253411 PMAQI
12th Jul 20253412 AMAQI
12th Jul 2025381 AMAQI
12th Jul 2025382 AMAQI
12th Jul 2025383 AMAQI
12th Jul 2025374 AMAQI
24°C19/29°C
12th Jul 2025365 AMAQI
12th Jul 2025366 AMAQI
12th Jul 2025367 AMAQI
12th Jul 2025268 AMAQI
12th Jul 2025249 AMAQI
12th Jul 20252710 AMAQI
12th Jul 20252811 AMAQI
12th Jul 20253012 PMAQI
12th Jul 2025361 PMAQI
12th Jul 2025392 PMAQI
12th Jul 2025453 PMAQI
12th Jul 2025444 PMAQI
12th Jul 2025445 PMAQI
12th Jul 2025466 PMAQI
12th Jul 2025447 PMAQI
12th Jul 2025408 PMAQI
12th Jul 2025419 PMAQI
12th Jul 20253910 PMAQI
12th Jul 20254011 PMAQI
13th Jul 20253712 AMAQI
13th Jul 2025381 AMAQI
13th Jul 2025382 AMAQI
13th Jul 2025373 AMAQI
13th Jul 2025384 AMAQI
28°C23/33°C
13th Jul 2025385 AMAQI
13th Jul 2025386 AMAQI
13th Jul 2025387 AMAQI
13th Jul 2025348 AMAQI
13th Jul 2025319 AMAQI
13th Jul 20253810 AMAQI
13th Jul 20253811 AMAQI
13th Jul 20254412 PMAQI
13th Jul 2025391 PMAQI
13th Jul 2025452 PMAQI
13th Jul 2025403 PMAQI
13th Jul 2025424 PMAQI
13th Jul 2025445 PMAQI
13th Jul 2025506 PMAQI
13th Jul 2025507 PMAQI
13th Jul 2025518 PMAQI
13th Jul 2025529 PMAQI
13th Jul 20255210 PMAQI
13th Jul 20255011 PMAQI
14th Jul 20254412 AMAQI
14th Jul 2025401 AMAQI
14th Jul 2025392 AMAQI
14th Jul 2025393 AMAQI
14th Jul 2025404 AMAQI
28°C23/33°C
14th Jul 2025395 AMAQI
14th Jul 2025416 AMAQI
14th Jul 2025407 AMAQI
14th Jul 2025408 AMAQI
14th Jul 2025489 AMAQI
14th Jul 20254310 AMAQI
14th Jul 20255111 AMAQI
14th Jul 20255012 PMAQI
14th Jul 2025541 PMAQI
14th Jul 2025532 PMAQI
14th Jul 2025523 PMAQI
14th Jul 2025564 PMAQI
14th Jul 2025505 PMAQI
14th Jul 2025506 PMAQI
14th Jul 2025507 PMAQI
14th Jul 2025488 PMAQI
14th Jul 2025509 PMAQI
14th Jul 20254810 PMAQI
14th Jul 20254911 PMAQI
15th Jul 20254612 AMAQI
15th Jul 2025411 AMAQI
15th Jul 2025422 AMAQI
15th Jul 2025423 AMAQI
15th Jul 2025444 AMAQI
26°C21/32°C
15th Jul 2025445 AMAQI
15th Jul 2025446 AMAQI
15th Jul 2025457 AMAQI
15th Jul 2025438 AMAQI
15th Jul 2025459 AMAQI
15th Jul 20254110 AMAQI
15th Jul 20253911 AMAQI
15th Jul 20253212 PMAQI
15th Jul 2025261 PMAQI
15th Jul 2025222 PMAQI
15th Jul 2025203 PMAQI
15th Jul 2025244 PMAQI
15th Jul 2025285 PMAQI
15th Jul 2025306 PMAQI
15th Jul 2025427 PMAQI
15th Jul 2025458 PMAQI
15th Jul 2025429 PMAQI
15th Jul 20254010 PMAQI
15th Jul 20253711 PMAQI
16th Jul 20253812 AMAQI
16th Jul 2025471 AMAQI
16th Jul 2025462 AMAQI
16th Jul 2025433 AMAQI
16th Jul 2025434 AMAQI
25°C22/28°C
16th Jul 2025435 AMAQI
16th Jul 2025436 AMAQI
16th Jul 2025437 AMAQI
16th Jul 2025448 AMAQI
16th Jul 2025319 AMAQI
16th Jul 20253810 AMAQI
16th Jul 20254611 AMAQI
16th Jul 20253812 PMAQI
16th Jul 2025271 PMAQI
16th Jul 2025332 PMAQI
16th Jul 2025293 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025385 PMAQI
16th Jul 2025316 PMAQI
16th Jul 2025307 PMAQI
16th Jul 2025438 PMAQI
16th Jul 2025429 PMAQI
16th Jul 20253910 PMAQI
16th Jul 20253711 PMAQI
17th Jul 20254012 AMAQI
17th Jul 2025451 AMAQI
17th Jul 2025442 AMAQI
17th Jul 2025463 AMAQI
17th Jul 2025424 AMAQI
26°C21/32°C
17th Jul 2025425 AMAQI
17th Jul 2025426 AMAQI
17th Jul 2025437 AMAQI
17th Jul 2025328 AMAQI
17th Jul 2025369 AMAQI
17th Jul 20253610 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20253612 PMAQI
17th Jul 2025421 PMAQI
17th Jul 2025492 PMAQI
17th Jul 2025403 PMAQI
17th Jul 2025524 PMAQI
17th Jul 2025485 PMAQI
17th Jul 2025436 PMAQI
17th Jul 2025497 PMAQI
17th Jul 2025438 PMAQI
17th Jul 2025419 PMAQI
17th Jul 20253810 PMAQI
17th Jul 20253511 PMAQI
18th Jul 20254012 AMAQI
18th Jul 2025461 AMAQI
18th Jul 2025452 AMAQI
18th Jul 2025453 AMAQI
18th Jul 2025444 AMAQI
27°C22/33°C
18th Jul 2025445 AMAQI
18th Jul 2025426 AMAQI
18th Jul 2025447 AMAQI
18th Jul 2025278 AMAQI
18th Jul 2025239 AMAQI
18th Jul 20252510 AMAQI
18th Jul 20253211 AMAQI
18th Jul 20254612 PMAQI
18th Jul 2025521 PMAQI
18th Jul 2025542 PMAQI
18th Jul 2025563 PMAQI
18th Jul 2025604 PMAQI
18th Jul 2025685 PMAQI
18th Jul 2025666 PMAQI
18th Jul 2025637 PMAQI
18th Jul 2025548 PMAQI
18th Jul 2025509 PMAQI
18th Jul 20255210 PMAQI
18th Jul 20254811 PMAQI
19th Jul 20254612 AMAQI
19th Jul 2025461 AMAQI
19th Jul 2025462 AMAQI
19th Jul 2025453 AMAQI
19th Jul 2025444 AMAQI
26°C21/31°C
19th Jul 2025435 AMAQI
19th Jul 2025436 AMAQI
19th Jul 2025437 AMAQI
19th Jul 2025328 AMAQI
19th Jul 2025209 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252311 AMAQI
19th Jul 20252812 PMAQI
19th Jul 2025291 PMAQI
19th Jul 2025272 PMAQI
19th Jul 2025253 PMAQI
19th Jul 2025264 PMAQI
19th Jul 2025245 PMAQI
19th Jul 2025276 PMAQI
19th Jul 2025337 PMAQI
19th Jul 2025398 PMAQI
19th Jul 2025389 PMAQI
19th Jul 20253610 PMAQI
19th Jul 20253611 PMAQI
20th Jul 20253712 AMAQI
20th Jul 2025461 AMAQI
20th Jul 2025452 AMAQI
20th Jul 2025443 AMAQI
20th Jul 2025434 AMAQI
25°C22/28°C
20th Jul 2025425 AMAQI
20th Jul 2025426 AMAQI
20th Jul 2025437 AMAQI
20th Jul 2025338 AMAQI
20th Jul 2025209 AMAQI
20th Jul 20252210 AMAQI
20th Jul 20252911 AMAQI
20th Jul 20252912 PMAQI
20th Jul 2025331 PMAQI
20th Jul 2025242 PMAQI
20th Jul 2025223 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025275 PMAQI
20th Jul 2025266 PMAQI
20th Jul 2025277 PMAQI
20th Jul 2025338 PMAQI
20th Jul 2025359 PMAQI
20th Jul 20253410 PMAQI
20th Jul 20253211 PMAQI
21st Jul 20253512 AMAQI
21st Jul 2025441 AMAQI
21st Jul 2025432 AMAQI
21st Jul 2025433 AMAQI
21st Jul 2025404 AMAQI
23°C21/25°C
21st Jul 2025415 AMAQI
21st Jul 2025416 AMAQI
21st Jul 2025407 AMAQI
21st Jul 2025278 AMAQI
21st Jul 2025229 AMAQI
21st Jul 20252110 AMAQI
21st Jul 20252711 AMAQI
21st Jul 20253912 PMAQI
21st Jul 2025351 PMAQI
21st Jul 2025312 PMAQI
21st Jul 2025393 PMAQI
21st Jul 2025374 PMAQI
21st Jul 2025265 PMAQI
21st Jul 2025196 PMAQI
21st Jul 2025247 PMAQI
21st Jul 2025318 PMAQI
21st Jul 2025339 PMAQI
21st Jul 20253010 PMAQI
21st Jul 20253211 PMAQI
22nd Jul 20253812 AMAQI
22nd Jul 2025421 AMAQI
22nd Jul 2025422 AMAQI
22nd Jul 2025403 AMAQI
22nd Jul 2025394 AMAQI
23°C20/26°C
22nd Jul 2025395 AMAQI
22nd Jul 2025396 AMAQI
22nd Jul 2025387 AMAQI
22nd Jul 2025268 AMAQI
22nd Jul 2025239 AMAQI
22nd Jul 20252710 AMAQI
22nd Jul 20252111 AMAQI
22nd Jul 20252312 PMAQI
22nd Jul 2025201 PMAQI
22nd Jul 2025172 PMAQI
22nd Jul 2025183 PMAQI
22nd Jul 2025244 PMAQI
22nd Jul 2025285 PMAQI
22nd Jul 2025276 PMAQI
22nd Jul 2025327 PMAQI
22nd Jul 2025418 PMAQI
22nd Jul 2025409 PMAQI
22nd Jul 20253710 PMAQI
22nd Jul 20253611 PMAQI
23rd Jul 20253512 AMAQI
23rd Jul 2025401 AMAQI
23rd Jul 2025402 AMAQI
23rd Jul 2025383 AMAQI
23rd Jul 2025364 AMAQI
25°C21/30°C
23rd Jul 2025365 AMAQI
23rd Jul 2025366 AMAQI
23rd Jul 2025367 AMAQI
23rd Jul 2025388 AMAQI
23rd Jul 2025339 AMAQI
23rd Jul 20252910 AMAQI
23rd Jul 20253811 AMAQI
23rd Jul 20255012 PMAQI
23rd Jul 2025521 PMAQI
23rd Jul 2025582 PMAQI
23rd Jul 2025713 PMAQI
23rd Jul 2025754 PMAQI
23rd Jul 2025725 PMAQI
23rd Jul 2025746 PMAQI
23rd Jul 2025687 PMAQI
23rd Jul 2025648 PMAQI
23rd Jul 2025659 PMAQI
23rd Jul 20256410 PMAQI
23rd Jul 20256211 PMAQI
24th Jul 20255312 AMAQI
24th Jul 2025381 AMAQI
24th Jul 2025382 AMAQI
24th Jul 2025403 AMAQI
24th Jul 2025424 AMAQI
27°C22/33°C
24th Jul 2025425 AMAQI
24th Jul 2025426 AMAQI
24th Jul 2025427 AMAQI
24th Jul 2025578 AMAQI
24th Jul 2025579 AMAQI
24th Jul 20255210 AMAQI
24th Jul 20255511 AMAQI
24th Jul 20255912 PMAQI
24th Jul 2025691 PMAQI
24th Jul 2025712 PMAQI
24th Jul 2025733 PMAQI
24th Jul 2025734 PMAQI
24th Jul 2025705 PMAQI
24th Jul 2025716 PMAQI
24th Jul 2025667 PMAQI
24th Jul 2025588 PMAQI
24th Jul 2025569 PMAQI
24th Jul 20255210 PMAQI
24th Jul 20254211 PMAQI
25th Jul 20254712 AMAQI
25th Jul 2025461 AMAQI
25th Jul 2025452 AMAQI
25th Jul 2025463 AMAQI
25th Jul 2025504 AMAQI
26°C21/32°C
25th Jul 2025495 AMAQI
25th Jul 2025506 AMAQI
25th Jul 2025507 AMAQI
25th Jul 2025548 AMAQI
25th Jul 2025539 AMAQI
25th Jul 20255210 AMAQI
25th Jul 20254611 AMAQI
25th Jul 20254512 PMAQI
25th Jul 2025361 PMAQI
25th Jul 2025292 PMAQI
25th Jul 2025243 PMAQI
25th Jul 2025264 PMAQI
25th Jul 2025335 PMAQI
25th Jul 2025296 PMAQI
25th Jul 2025297 PMAQI
25th Jul 2025358 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20253310 PMAQI
25th Jul 20253411 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025481 AMAQI
26th Jul 2025472 AMAQI
26th Jul 2025483 AMAQI
26th Jul 2025484 AMAQI
26°C21/31°C
26th Jul 2025475 AMAQI
26th Jul 2025476 AMAQI
26th Jul 2025477 AMAQI
26th Jul 2025268 AMAQI
26th Jul 2025199 AMAQI
26th Jul 20252210 AMAQI
26th Jul 20252011 AMAQI
26th Jul 20252312 PMAQI
26th Jul 2025231 PMAQI
26th Jul 2025262 PMAQI
26th Jul 2025223 PMAQI
26th Jul 2025194 PMAQI
26th Jul 2025195 PMAQI
26th Jul 2025206 PMAQI
26th Jul 2025297 PMAQI
26th Jul 2025408 PMAQI
26th Jul 2025409 PMAQI
26th Jul 20253810 PMAQI
26th Jul 20254011 PMAQI
27th Jul 20253812 AMAQI
27th Jul 2025461 AMAQI
27th Jul 2025472 AMAQI
27th Jul 2025443 AMAQI
27th Jul 2025404 AMAQI
25°C23/26°C
27th Jul 2025415 AMAQI
27th Jul 2025416 AMAQI
27th Jul 2025417 AMAQI
27th Jul 2025408 AMAQI
27th Jul 2025409 AMAQI
27th Jul 20254010 AMAQI
27th Jul 20253411 AMAQI
27th Jul 20253412 PMAQI
27th Jul 2025341 PMAQI
27th Jul 2025342 PMAQI
27th Jul 2025393 PMAQI
27th Jul 2025424 PMAQI
27th Jul 2025435 PMAQI
27th Jul 2025456 PMAQI
27th Jul 2025427 PMAQI
27th Jul 2025388 PMAQI
27th Jul 2025409 PMAQI
27th Jul 20254210 PMAQI
27th Jul 20254611 PMAQI
28th Jul 20254112 AMAQI
28th Jul 2025431 AMAQI
28th Jul 2025422 AMAQI
28th Jul 2025413 AMAQI
28th Jul 2025424 AMAQI
26°C21/31°C
28th Jul 2025415 AMAQI
28th Jul 2025426 AMAQI
28th Jul 2025417 AMAQI
28th Jul 2025248 AMAQI
28th Jul 2025189 AMAQI
28th Jul 20252210 AMAQI
28th Jul 20252211 AMAQI
28th Jul 20252012 PMAQI
28th Jul 2025191 PMAQI
28th Jul 2025192 PMAQI
28th Jul 2025173 PMAQI
28th Jul 2025184 PMAQI
28th Jul 2025185 PMAQI
28th Jul 2025176 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025308 PMAQI
28th Jul 2025309 PMAQI
28th Jul 20253010 PMAQI
28th Jul 20252811 PMAQI
29th Jul 20253212 AMAQI
29th Jul 2025421 AMAQI
29th Jul 2025422 AMAQI
29th Jul 2025403 AMAQI
29th Jul 2025384 AMAQI
24°C20/26°C
29th Jul 2025385 AMAQI
29th Jul 2025376 AMAQI
29th Jul 2025377 AMAQI
29th Jul 2025248 AMAQI
29th Jul 2025209 AMAQI
29th Jul 20251810 AMAQI
29th Jul 20252011 AMAQI
29th Jul 20252112 PMAQI
29th Jul 2025191 PMAQI
29th Jul 2025192 PMAQI
29th Jul 2025183 PMAQI
29th Jul 2025214 PMAQI
29th Jul 2025205 PMAQI
29th Jul 2025186 PMAQI
29th Jul 2025277 PMAQI
29th Jul 2025348 PMAQI
29th Jul 2025339 PMAQI
29th Jul 20253410 PMAQI
29th Jul 20254411 PMAQI
30th Jul 20253612 AMAQI
30th Jul 2025411 AMAQI
30th Jul 2025402 AMAQI
30th Jul 2025373 AMAQI
30th Jul 2025354 AMAQI
25°C23/27°C
30th Jul 2025345 AMAQI
30th Jul 2025366 AMAQI
30th Jul 2025357 AMAQI
30th Jul 2025198 AMAQI
30th Jul 2025159 AMAQI
30th Jul 20252210 AMAQI
30th Jul 20252911 AMAQI
30th Jul 20253012 PMAQI
30th Jul 2025241 PMAQI
30th Jul 2025252 PMAQI
30th Jul 2025283 PMAQI
30th Jul 2025284 PMAQI
30th Jul 2025285 PMAQI
30th Jul 2025286 PMAQI
30th Jul 2025367 PMAQI
30th Jul 2025368 PMAQI
30th Jul 2025329 PMAQI
30th Jul 20253010 PMAQI
30th Jul 20253011 PMAQI
31st Jul 20253112 AMAQI
31st Jul 2025361 AMAQI
31st Jul 2025372 AMAQI
31st Jul 2025363 AMAQI
31st Jul 2025364 AMAQI
26°C21/31°C
31st Jul 2025365 AMAQI
31st Jul 2025366 AMAQI
31st Jul 2025367 AMAQI
31st Jul 2025368 AMAQI
31st Jul 2025369 AMAQI
31st Jul 20253910 AMAQI
31st Jul 20253611 AMAQI
31st Jul 20253312 PMAQI
31st Jul 2025291 PMAQI
31st Jul 2025262 PMAQI
31st Jul 2025263 PMAQI
31st Jul 2025244 PMAQI
31st Jul 2025245 PMAQI
31st Jul 2025256 PMAQI
31st Jul 2025317 PMAQI
31st Jul 2025458 PMAQI
31st Jul 2025439 PMAQI
31st Jul 20254210 PMAQI
31st Jul 20254311 PMAQI
1st Aug 20253912 AMAQI
1st Aug 2025421 AMAQI
1st Aug 2025462 AMAQI
1st Aug 2025363 AMAQI
1st Aug 2025374 AMAQI
26°C21/32°C
1st Aug 2025365 AMAQI
1st Aug 2025426 AMAQI
1st Aug 2025487 AMAQI
1st Aug 2025468 AMAQI
1st Aug 2025489 AMAQI
1st Aug 20254810 AMAQI
1st Aug 20255011 AMAQI
1st Aug 20255312 PMAQI
1st Aug 2025381 PMAQI
1st Aug 2025352 PMAQI
1st Aug 2025423 PMAQI
1st Aug 2025384 PMAQI
1st Aug 2025355 PMAQI
1st Aug 2025356 PMAQI
1st Aug 2025367 PMAQI
1st Aug 2025378 PMAQI
1st Aug 2025429 PMAQI
1st Aug 20254510 PMAQI
1st Aug 20254411 PMAQI
2nd Aug 20254212 AMAQI
2nd Aug 2025431 AMAQI
2nd Aug 2025442 AMAQI
2nd Aug 2025483 AMAQI
2nd Aug 2025474 AMAQI
26°C21/31°C
2nd Aug 2025475 AMAQI
2nd Aug 2025466 AMAQI
2nd Aug 2025467 AMAQI
2nd Aug 2025308 AMAQI
2nd Aug 2025369 AMAQI
2nd Aug 20253910 AMAQI
2nd Aug 20254011 AMAQI
2nd Aug 20253512 PMAQI
2nd Aug 2025381 PMAQI
2nd Aug 2025382 PMAQI
2nd Aug 2025293 PMAQI
2nd Aug 2025294 PMAQI
2nd Aug 2025245 PMAQI
2nd Aug 2025336 PMAQI
2nd Aug 2025347 PMAQI
2nd Aug 2025358 PMAQI
2nd Aug 2025369 PMAQI
2nd Aug 20254110 PMAQI
2nd Aug 20254011 PMAQI
3rd Aug 20254412 AMAQI
3rd Aug 2025481 AMAQI
3rd Aug 2025472 AMAQI
3rd Aug 2025473 AMAQI
3rd Aug 2025464 AMAQI
26°C22/31°C
3rd Aug 2025475 AMAQI
3rd Aug 2025456 AMAQI
3rd Aug 2025457 AMAQI
3rd Aug 2025458 AMAQI
3rd Aug 2025409 AMAQI
3rd Aug 20253210 AMAQI
3rd Aug 20253411 AMAQI
3rd Aug 20253312 PMAQI
3rd Aug 2025341 PMAQI
3rd Aug 2025342 PMAQI
3rd Aug 2025273 PMAQI
3rd Aug 2025304 PMAQI
3rd Aug 2025275 PMAQI
3rd Aug 2025256 PMAQI
3rd Aug 2025367 PMAQI
3rd Aug 2025388 PMAQI
3rd Aug 2025429 PMAQI
3rd Aug 20253910 PMAQI
3rd Aug 20254411 PMAQI
4th Aug 20254412 AMAQI
4th Aug 2025501 AMAQI
4th Aug 2025502 AMAQI
4th Aug 2025473 AMAQI
4th Aug 2025484 AMAQI
25°C21/30°C
4th Aug 2025495 AMAQI
4th Aug 2025466 AMAQI
4th Aug 2025457 AMAQI
4th Aug 2025338 AMAQI
4th Aug 2025359 AMAQI
4th Aug 20253210 AMAQI
4th Aug 20253211 AMAQI
4th Aug 20253512 PMAQI
4th Aug 2025381 PMAQI
4th Aug 2025372 PMAQI
4th Aug 2025283 PMAQI
4th Aug 2025404 PMAQI
4th Aug 2025445 PMAQI
4th Aug 2025416 PMAQI
4th Aug 2025407 PMAQI
4th Aug 2025408 PMAQI
4th Aug 2025459 PMAQI
4th Aug 20254410 PMAQI
4th Aug 20254011 PMAQI
5th Aug 20254312 AMAQI
5th Aug 2025481 AMAQI
5th Aug 2025522 AMAQI
5th Aug 2025493 AMAQI
5th Aug 2025464 AMAQI
25°C23/25°C
5th Aug 2025495 AMAQI
5th Aug 2025506 AMAQI
5th Aug 2025497 AMAQI
5th Aug 2025368 AMAQI
5th Aug 2025429 AMAQI
5th Aug 20253610 AMAQI
5th Aug 20254811 AMAQI
5th Aug 20253612 PMAQI
5th Aug 2025401 PMAQI
5th Aug 2025452 PMAQI
5th Aug 2025503 PMAQI
5th Aug 2025464 PMAQI
5th Aug 2025465 PMAQI
5th Aug 2025466 PMAQI
5th Aug 2025457 PMAQI
5th Aug 2025508 PMAQI
5th Aug 2025499 PMAQI
5th Aug 20254610 PMAQI
5th Aug 20254711 PMAQI
6th Aug 20255012 AMAQI
6th Aug 2025491 AMAQI
6th Aug 2025482 AMAQI
6th Aug 2025473 AMAQI
6th Aug 2025444 AMAQI
26°C23/29°C
6th Aug 2025485 AMAQI
6th Aug 2025506 AMAQI
6th Aug 2025487 AMAQI
6th Aug 2025438 AMAQI
6th Aug 2025549 AMAQI
6th Aug 20254310 AMAQI
6th Aug 20254511 AMAQI
6th Aug 20253912 PMAQI
6th Aug 2025481 PMAQI
6th Aug 2025452 PMAQI
6th Aug 2025463 PMAQI
6th Aug 2025484 PMAQI
6th Aug 2025475 PMAQI
6th Aug 2025446 PMAQI
6th Aug 2025457 PMAQI
6th Aug 2025528 PMAQI
6th Aug 2025499 PMAQI
6th Aug 20254810 PMAQI
6th Aug 20255111 PMAQI
7th Aug 20255012 AMAQI
7th Aug 2025511 AMAQI
7th Aug 2025492 AMAQI
7th Aug 2025483 AMAQI
7th Aug 2025504 AMAQI
27°C24/32°C
7th Aug 2025485 AMAQI
7th Aug 2025496 AMAQI
7th Aug 2025507 AMAQI
7th Aug 2025508 AMAQI
7th Aug 2025469 AMAQI
7th Aug 20254410 AMAQI
7th Aug 20254411 AMAQI
7th Aug 20254012 PMAQI
7th Aug 2025541 PMAQI
7th Aug 2025572 PMAQI
7th Aug 2025523 PMAQI
7th Aug 2025584 PMAQI
7th Aug 2025595 PMAQI
7th Aug 2025596 PMAQI
7th Aug 2025527 PMAQI
7th Aug 2025528 PMAQI
7th Aug 2025549 PMAQI
7th Aug 20255210 PMAQI
7th Aug 20255311 PMAQI
8th Aug 20255012 AMAQI
8th Aug 2025501 AMAQI
8th Aug 2025492 AMAQI
8th Aug 2025503 AMAQI
8th Aug 2025504 AMAQI
28°C22/33°C
8th Aug 2025515 AMAQI
8th Aug 2025516 AMAQI
8th Aug 2025507 AMAQI
8th Aug 2025548 AMAQI
8th Aug 2025559 AMAQI
8th Aug 20254510 AMAQI
8th Aug 20255911 AMAQI
8th Aug 20256412 PMAQI
8th Aug 2025671 PMAQI
8th Aug 2025612 PMAQI
8th Aug 2025643 PMAQI
8th Aug 2025594 PMAQI
8th Aug 2025525 PMAQI
8th Aug 2025476 PMAQI
8th Aug 2025507 PMAQI
8th Aug 2025528 PMAQI
8th Aug 2025549 PMAQI
8th Aug 20255210 PMAQI
8th Aug 20255211 PMAQI
9th Aug 20255112 AMAQI
9th Aug 2025511 AMAQI
9th Aug 2025512 AMAQI
9th Aug 2025523 AMAQI
9th Aug 2025524 AMAQI
27°C21/33°C
9th Aug 2025535 AMAQI
5 AM9th Aug 2025536 AMAQI
9th Aug 2025537 AMAQI
9th Aug 2025568 AMAQI
9th Aug 2025579 AMAQI
9th Aug 20255410 AMAQI
9th Aug 20255211 AMAQI
11 AM9th Aug 20255212 PMAQI
9th Aug 2025561 PMAQI
9th Aug 2025562 PMAQI
9th Aug 2025563 PMAQI
9th Aug 2025514 PMAQI
9th Aug 2025455 PMAQI
9th Aug 2025336 PMAQI
6 PM9th Aug 2025347 PMAQI
9th Aug 2025438 PMAQI
9th Aug 2025569 PMAQI
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 AM
43AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
8 AM - 10 AM
35AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 43), while the lowest AQI was between 8 AM to 10 AM (Avg. 35).
Night time
Avg. Highest Time
1 AM - 11 PM
42AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
42AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 11 PM (Avg. 42), while the lowest AQI was between 12 AM to 11 PM (Avg. 42).
2025 Days Vs Air Quality
Ershui, Changhua, Taiwan
2025
39%
85
61%
134
0.4%
1
Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)
Good
85 DaysModerate
134 DaysPoor
1 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 39%
Health Risk Level:
High
In 2025, 39% of 221 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Ershui, Changhua, Taiwan
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
106AQI
106AQI
2nd January 2025
63AQI
63AQI
3rd January 2025
66AQI
66AQI
4th January 2025
63AQI
63AQI
5th January 2025
70AQI
70AQI
6th January 2025
75AQI
75AQI
7th January 2025
82AQI
82AQI
8th January 2025
73AQI
73AQI
9th January 2025
71AQI
71AQI
10th January 2025
57AQI
57AQI
11th January 2025
57AQI
57AQI
12th January 2025
55AQI
55AQI
13th January 2025
60AQI
60AQI
14th January 2025
77AQI
77AQI
15th January 2025
70AQI
70AQI
16th January 2025
65AQI
65AQI
17th January 2025
64AQI
64AQI
18th January 2025
74AQI
74AQI
19th January 2025
61AQI
61AQI
20th January 2025
73AQI
73AQI
21st January 2025
81AQI
81AQI
22nd January 2025
97AQI
97AQI
23rd January 2025
83AQI
83AQI
24th January 2025
82AQI
82AQI
25th January 2025
83AQI
83AQI
26th January 2025
70AQI
70AQI
27th January 2025
51AQI
51AQI
28th January 2025
65AQI
65AQI
29th January 2025
67AQI
67AQI
30th January 2025
72AQI
72AQI
31st January 2025
80AQI
80AQI
1st February 2025
55AQI
55AQI
2nd February 2025
56AQI
56AQI
3rd February 2025
49AQI
49AQI
4th February 2025
60AQI
60AQI
5th February 2025
77AQI
77AQI
6th February 2025
90AQI
90AQI
7th February 2025
62AQI
62AQI
8th February 2025
66AQI
66AQI
9th February 2025
50AQI
50AQI
10th February 2025
59AQI
59AQI
11th February 2025
69AQI
69AQI
12th February 2025
69AQI
69AQI
13th February 2025
52AQI
52AQI
14th February 2025
70AQI
70AQI
15th February 2025
55AQI
55AQI
16th February 2025
76AQI
76AQI
17th February 2025
89AQI
89AQI
18th February 2025
89AQI
89AQI
19th February 2025
86AQI
86AQI
20th February 2025
90AQI
90AQI
21st February 2025
57AQI
57AQI
22nd February 2025
71AQI
71AQI
23rd February 2025
48AQI
48AQI
24th February 2025
58AQI
58AQI
25th February 2025
78AQI
78AQI
26th February 2025
87AQI
87AQI
27th February 2025
96AQI
96AQI
28th February 2025
73AQI
73AQI
1st March 2025
67AQI
67AQI
2nd March 2025
68AQI
68AQI
3rd March 2025
64AQI
64AQI
4th March 2025
57AQI
57AQI
5th March 2025
48AQI
48AQI
6th March 2025
43AQI
43AQI
7th March 2025
55AQI
55AQI
8th March 2025
59AQI
59AQI
9th March 2025
63AQI
63AQI
10th March 2025
88AQI
88AQI
11th March 2025
91AQI
91AQI
12th March 2025
68AQI
68AQI
13th March 2025
64AQI
64AQI
14th March 2025
75AQI
75AQI
15th March 2025
62AQI
62AQI
16th March 2025
53AQI
53AQI
17th March 2025
72AQI
72AQI
18th March 2025
57AQI
57AQI
19th March 2025
65AQI
65AQI
20th March 2025
62AQI
62AQI
21st March 2025
67AQI
67AQI
22nd March 2025
70AQI
70AQI
23rd March 2025
75AQI
75AQI
24th March 2025
71AQI
71AQI
25th March 2025
69AQI
69AQI
26th March 2025
67AQI
67AQI
27th March 2025
61AQI
61AQI
28th March 2025
68AQI
68AQI
29th March 2025
59AQI
59AQI
30th March 2025
47AQI
47AQI
31st March 2025
53AQI
53AQI
1st April 2025
42AQI
42AQI
2nd April 2025
56AQI
56AQI
3rd April 2025
72AQI
72AQI
4th April 2025
74AQI
74AQI
5th April 2025
77AQI
77AQI
6th April 2025
64AQI
64AQI
7th April 2025
70AQI
70AQI
8th April 2025
70AQI
70AQI
9th April 2025
73AQI
73AQI
10th April 2025
67AQI
67AQI
11th April 2025
71AQI
71AQI
12th April 2025
58AQI
58AQI
13th April 2025
76AQI
76AQI
14th April 2025
69AQI
69AQI
15th April 2025
79AQI
79AQI
16th April 2025
78AQI
78AQI
17th April 2025
72AQI
72AQI
18th April 2025
65AQI
65AQI
19th April 2025
62AQI
62AQI
20th April 2025
60AQI
60AQI
21st April 2025
63AQI
63AQI
22nd April 2025
56AQI
56AQI
23rd April 2025
58AQI
58AQI
24th April 2025
59AQI
59AQI
25th April 2025
57AQI
57AQI
26th April 2025
74AQI
74AQI
27th April 2025
67AQI
67AQI
28th April 2025
58AQI
58AQI
29th April 2025
72AQI
72AQI
30th April 2025
67AQI
67AQI
1st May 2025
68AQI
68AQI
2nd May 2025
71AQI
71AQI
3rd May 2025
70AQI
70AQI
4th May 2025
67AQI
67AQI
5th May 2025
62AQI
62AQI
6th May 2025
63AQI
63AQI
7th May 2025
54AQI
54AQI
8th May 2025
61AQI
61AQI
9th May 2025
42AQI
42AQI
10th May 2025
38AQI
38AQI
11th May 2025
38AQI
38AQI
12th May 2025
49AQI
49AQI
13th May 2025
53AQI
53AQI
14th May 2025
56AQI
56AQI
15th May 2025
51AQI
51AQI
16th May 2025
56AQI
56AQI
17th May 2025
46AQI
46AQI
18th May 2025
36AQI
36AQI
19th May 2025
40AQI
40AQI
20th May 2025
43AQI
43AQI
21st May 2025
36AQI
36AQI
22nd May 2025
44AQI
44AQI
23rd May 2025
42AQI
42AQI
24th May 2025
42AQI
42AQI
25th May 2025
53AQI
53AQI
26th May 2025
54AQI
54AQI
27th May 2025
53AQI
53AQI
28th May 2025
59AQI
59AQI
29th May 2025
35AQI
35AQI
30th May 2025
48AQI
48AQI
31st May 2025
49AQI
49AQI
1st June 2025
51AQI
51AQI
2nd June 2025
36AQI
36AQI
3rd June 2025
38AQI
38AQI
4th June 2025
42AQI
42AQI
5th June 2025
34AQI
34AQI
6th June 2025
35AQI
35AQI
7th June 2025
37AQI
37AQI
8th June 2025
34AQI
34AQI
9th June 2025
33AQI
33AQI
10th June 2025
40AQI
40AQI
11th June 2025
43AQI
43AQI
12th June 2025
44AQI
44AQI
13th June 2025
26AQI
26AQI
14th June 2025
35AQI
35AQI
15th June 2025
35AQI
35AQI
16th June 2025
32AQI
32AQI
17th June 2025
29AQI
29AQI
18th June 2025
31AQI
31AQI
19th June 2025
32AQI
32AQI
20th June 2025
33AQI
33AQI
21st June 2025
28AQI
28AQI
22nd June 2025
21AQI
21AQI
23rd June 2025
23AQI
23AQI
24th June 2025
28AQI
28AQI
25th June 2025
34AQI
34AQI
26th June 2025
32AQI
32AQI
27th June 2025
28AQI
28AQI
28th June 2025
30AQI
30AQI
29th June 2025
33AQI
33AQI
30th June 2025
39AQI
39AQI
1st July 2025
43AQI
43AQI
2nd July 2025
51AQI
51AQI
3rd July 2025
50AQI
50AQI
4th July 2025
46AQI
46AQI
5th July 2025
38AQI
38AQI
6th July 2025
33AQI
33AQI
7th July 2025
33AQI
33AQI
8th July 2025
38AQI
38AQI
9th July 2025
39AQI
39AQI
10th July 2025
31AQI
31AQI
11th July 2025
32AQI
32AQI
12th July 2025
38AQI
38AQI
13th July 2025
42AQI
42AQI
14th July 2025
46AQI
46AQI
15th July 2025
38AQI
38AQI
16th July 2025
39AQI
39AQI
17th July 2025
42AQI
42AQI
18th July 2025
48AQI
48AQI
19th July 2025
35AQI
35AQI
20th July 2025
34AQI
34AQI
21st July 2025
33AQI
33AQI
22nd July 2025
33AQI
33AQI
23rd July 2025
51AQI
51AQI
24th July 2025
54AQI
54AQI
25th July 2025
41AQI
41AQI
26th July 2025
34AQI
34AQI
27th July 2025
41AQI
41AQI
28th July 2025
29AQI
29AQI
29th July 2025
30AQI
30AQI
30th July 2025
32AQI
32AQI
31st July 2025
35AQI
35AQI
1st August 2025
41AQI
41AQI
2nd August 2025
39AQI
39AQI
3rd August 2025
39AQI
39AQI
4th August 2025
42AQI
42AQI
5th August 2025
46AQI
46AQI
6th August 2025
47AQI
47AQI
7th August 2025
51AQI
51AQI
8th August 2025
52AQI
52AQI
71AQI
69AQI
64AQI
66AQI
51AQI
34AQI
39AQI
45AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202556AQI
30
1
3
25
3
28
1
29
15
16
29
1
28
3
6
2
85
134
1
Highest AQI recorded in
January71AQI
Lowest AQI recorded in
June34AQI
202461AQI
1
24
6
26
3
23
8
2
26
2
7
24
28
1
31
27
4
14
16
14
17
9
20
1
1
30
134
211
20
Highest AQI recorded in
January86AQI
Lowest AQI recorded in
July31AQI
202362AQI
3
22
6
4
23
1
2
28
1
1
25
4
10
19
2
30
31
28
3
11
19
6
20
5
1
27
1
3
27
1
130
213
21
Highest AQI recorded in
April80AQI
Lowest AQI recorded in
July26AQI
202258AQI
1
27
2
5
16
1
18
12
6
21
3
16
15
30
20
1
1
11
17
13
18
6
23
1
12
19
122
175
18
Highest AQI recorded in
March88AQI
Lowest AQI recorded in
June25AQI
202167AQI
1
17
11
17
11
15
16
23
7
13
16
1
30
29
2
26
5
14
16
7
23
1
1
29
1
28
2
122
191
49
Highest AQI recorded in
February99AQI
Lowest AQI recorded in
June32AQI
202057AQI
1
6
6
1
20
12
6
30
31
26
5
6
24
1
29
1
30
6
23
2
114
143
9
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
June30AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
67AQILeast Polluted Year Recorded
2025(Avg.)
56AQIErshui's annual 2025 AQI (56) shows an average percentage change of -8.2% (improved AQI) compared to previous years: 2020 (57), 2021 (67), 2022 (58), 2023 (62), 2024 (61).
