Hai Yu Sub Station, Changshu, Jiangsu, China 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
Hai Yu Sub Station, Changshu, Jiangsu, China
2024
2025
2026
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
11th Aug 2024
80AQILowest AQI recorded on
9th Aug 2026
27AQISame Day Analysis (12th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 3rd highest AQI at 48 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 11th Aug - 12th Aug 2026
Hai Yu Sub Station, Changshu, Jiangsu, China
AQI
Day
Night
.
5 AM11th Aug 2026
6 PM
4 AM12th Aug 2026
Day time
Avg. Highest Time
9AM11th Aug
50AQI
Avg. Lowest Time
5PM11th Aug
31AQI
Night time
Avg. Highest Time
4AM12th Aug
58AQI
Avg. Lowest Time
11PM11th Aug
36AQI
In the last 24 hours,
Hai Yu Sub Station's AQI reached its highest point of 58 at 4 AM during the Night, while the lowest point, 31, was recorded at 5 PM during the Day between 11th Aug and 12th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Hai Yu Sub Station, Changshu, Jiangsu, China
JulAug
14th - 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 - 12th12th
Day
Night
14th Jul 2026295 AMAQI
14th Jul 2026306 AMAQI
14th Jul 2026287 AMAQI
14th Jul 2026328 AMAQI
14th Jul 2026329 AMAQI
14th Jul 20262710 AMAQI
14th Jul 20266911 AMAQI
14th Jul 20265512 PMAQI
14th Jul 2026461 PMAQI
14th Jul 2026482 PMAQI
14th Jul 2026513 PMAQI
14th Jul 2026504 PMAQI
14th Jul 2026525 PMAQI
14th Jul 2026486 PMAQI
14th Jul 2026467 PMAQI
14th Jul 2026518 PMAQI
14th Jul 2026609 PMAQI
14th Jul 20265710 PMAQI
14th Jul 20265711 PMAQI
15th Jul 20266812 AMAQI
15th Jul 2026701 AMAQI
15th Jul 2026762 AMAQI
15th Jul 2026863 AMAQI
15th Jul 2026944 AMAQI
31°C26/35°C
15th Jul 2026845 AMAQI
15th Jul 2026766 AMAQI
15th Jul 2026717 AMAQI
15th Jul 2026728 AMAQI
15th Jul 2026689 AMAQI
15th Jul 20265510 AMAQI
15th Jul 20265311 AMAQI
15th Jul 20264912 PMAQI
15th Jul 2026241 PMAQI
15th Jul 2026202 PMAQI
15th Jul 2026173 PMAQI
15th Jul 2026184 PMAQI
15th Jul 2026185 PMAQI
15th Jul 2026176 PMAQI
15th Jul 2026187 PMAQI
15th Jul 2026208 PMAQI
15th Jul 2026319 PMAQI
15th Jul 20263110 PMAQI
15th Jul 20263611 PMAQI
16th Jul 20263412 AMAQI
16th Jul 2026481 AMAQI
16th Jul 2026382 AMAQI
16th Jul 2026423 AMAQI
16th Jul 2026554 AMAQI
32°C28/36°C
16th Jul 2026495 AMAQI
16th Jul 2026446 AMAQI
16th Jul 2026597 AMAQI
16th Jul 2026568 AMAQI
16th Jul 2026629 AMAQI
16th Jul 20265310 AMAQI
16th Jul 20265111 AMAQI
16th Jul 20263812 PMAQI
16th Jul 2026291 PMAQI
16th Jul 2026272 PMAQI
16th Jul 2026253 PMAQI
16th Jul 2026234 PMAQI
16th Jul 2026275 PMAQI
16th Jul 2026276 PMAQI
16th Jul 2026297 PMAQI
16th Jul 2026348 PMAQI
16th Jul 2026409 PMAQI
16th Jul 20264410 PMAQI
16th Jul 20264611 PMAQI
17th Jul 20264412 AMAQI
17th Jul 2026531 AMAQI
17th Jul 2026622 AMAQI
17th Jul 2026653 AMAQI
17th Jul 2026684 AMAQI
32°C28/36°C
17th Jul 2026815 AMAQI
17th Jul 2026846 AMAQI
17th Jul 2026907 AMAQI
17th Jul 2026828 AMAQI
17th Jul 2026799 AMAQI
17th Jul 20268010 AMAQI
17th Jul 20265411 AMAQI
17th Jul 20263612 PMAQI
17th Jul 2026341 PMAQI
17th Jul 2026202 PMAQI
17th Jul 2026233 PMAQI
17th Jul 2026254 PMAQI
17th Jul 2026255 PMAQI
17th Jul 2026256 PMAQI
17th Jul 2026297 PMAQI
17th Jul 2026368 PMAQI
17th Jul 2026409 PMAQI
17th Jul 20265010 PMAQI
17th Jul 20265411 PMAQI
18th Jul 20265212 AMAQI
18th Jul 2026551 AMAQI
18th Jul 2026602 AMAQI
18th Jul 2026603 AMAQI
18th Jul 2026594 AMAQI
32°C29/36°C
18th Jul 2026595 AMAQI
18th Jul 2026626 AMAQI
18th Jul 2026597 AMAQI
18th Jul 2026628 AMAQI
18th Jul 2026709 AMAQI
18th Jul 20269010 AMAQI
18th Jul 20268511 AMAQI
18th Jul 20268212 PMAQI
18th Jul 2026841 PMAQI
18th Jul 2026902 PMAQI
18th Jul 2026903 PMAQI
18th Jul 2026844 PMAQI
18th Jul 2026805 PMAQI
18th Jul 2026816 PMAQI
18th Jul 2026837 PMAQI
18th Jul 2026788 PMAQI
18th Jul 2026629 PMAQI
18th Jul 20266210 PMAQI
18th Jul 20265411 PMAQI
19th Jul 20265012 AMAQI
19th Jul 2026551 AMAQI
19th Jul 2026402 AMAQI
19th Jul 2026363 AMAQI
19th Jul 2026364 AMAQI
30°C27/33°C
19th Jul 2026335 AMAQI
19th Jul 2026366 AMAQI
19th Jul 2026447 AMAQI
19th Jul 2026368 AMAQI
19th Jul 2026539 AMAQI
19th Jul 20266410 AMAQI
19th Jul 20267011 AMAQI
19th Jul 20266812 PMAQI
19th Jul 2026541 PMAQI
19th Jul 2026462 PMAQI
19th Jul 2026383 PMAQI
19th Jul 2026274 PMAQI
19th Jul 2026315 PMAQI
19th Jul 2026296 PMAQI
19th Jul 2026277 PMAQI
19th Jul 2026258 PMAQI
19th Jul 2026259 PMAQI
19th Jul 20262510 PMAQI
19th Jul 20262111 PMAQI
20th Jul 20262512 AMAQI
20th Jul 2026271 AMAQI
20th Jul 2026232 AMAQI
20th Jul 2026253 AMAQI
20th Jul 2026424 AMAQI
27°C25/31°C
20th Jul 2026425 AMAQI
20th Jul 2026576 AMAQI
20th Jul 2026667 AMAQI
20th Jul 2026628 AMAQI
20th Jul 2026669 AMAQI
20th Jul 20266810 AMAQI
20th Jul 20266811 AMAQI
20th Jul 20268012 PMAQI
20th Jul 2026741 PMAQI
20th Jul 2026582 PMAQI
20th Jul 2026403 PMAQI
20th Jul 2026274 PMAQI
20th Jul 2026275 PMAQI
20th Jul 2026236 PMAQI
20th Jul 2026217 PMAQI
20th Jul 2026218 PMAQI
20th Jul 2026239 PMAQI
20th Jul 20262710 PMAQI
20th Jul 20263311 PMAQI
21st Jul 20262712 AMAQI
21st Jul 2026271 AMAQI
21st Jul 2026232 AMAQI
21st Jul 2026213 AMAQI
21st Jul 2026234 AMAQI
27°C25/31°C
21st Jul 2026275 AMAQI
21st Jul 2026316 AMAQI
21st Jul 2026447 AMAQI
21st Jul 2026448 AMAQI
21st Jul 2026569 AMAQI
21st Jul 20265810 AMAQI
21st Jul 20266712 PMAQI
21st Jul 2026681 PMAQI
21st Jul 2026722 PMAQI
21st Jul 2026693 PMAQI
21st Jul 2026624 PMAQI
21st Jul 2026545 PMAQI
21st Jul 2026986 PMAQI
21st Jul 2026427 PMAQI
21st Jul 2026368 PMAQI
21st Jul 2026319 PMAQI
21st Jul 20263310 PMAQI
21st Jul 20263111 PMAQI
22nd Jul 20264012 AMAQI
22nd Jul 2026421 AMAQI
22nd Jul 2026382 AMAQI
22nd Jul 2026323 AMAQI
22nd Jul 2026404 AMAQI
26°C24/28°C
22nd Jul 2026575 AMAQI
22nd Jul 2026576 AMAQI
22nd Jul 2026517 AMAQI
22nd Jul 2026528 AMAQI
22nd Jul 2026519 AMAQI
22nd Jul 20263810 AMAQI
22nd Jul 20264011 AMAQI
22nd Jul 20265112 PMAQI
22nd Jul 2026651 PMAQI
22nd Jul 2026582 PMAQI
22nd Jul 2026553 PMAQI
22nd Jul 2026554 PMAQI
22nd Jul 2026625 PMAQI
22nd Jul 2026596 PMAQI
22nd Jul 2026577 PMAQI
22nd Jul 2026538 PMAQI
22nd Jul 2026299 PMAQI
22nd Jul 20262310 PMAQI
22nd Jul 20262511 PMAQI
23rd Jul 20262112 AMAQI
23rd Jul 2026251 AMAQI
23rd Jul 2026252 AMAQI
23rd Jul 2026423 AMAQI
23rd Jul 2026534 AMAQI
27°C25/32°C
23rd Jul 2026535 AMAQI
23rd Jul 2026586 AMAQI
23rd Jul 2026647 AMAQI
23rd Jul 2026758 AMAQI
23rd Jul 2026909 AMAQI
23rd Jul 20269010 AMAQI
23rd Jul 20269011 AMAQI
23rd Jul 20268612 PMAQI
23rd Jul 2026701 PMAQI
23rd Jul 2026622 PMAQI
23rd Jul 2026603 PMAQI
23rd Jul 2026534 PMAQI
23rd Jul 2026515 PMAQI
23rd Jul 2026596 PMAQI
23rd Jul 2026657 PMAQI
23rd Jul 2026808 PMAQI
23rd Jul 2026569 PMAQI
23rd Jul 20266210 PMAQI
23rd Jul 20266711 PMAQI
24th Jul 20267312 AMAQI
24th Jul 2026801 AMAQI
24th Jul 2026882 AMAQI
24th Jul 2026893 AMAQI
24th Jul 2026824 AMAQI
29°C25/34°C
24th Jul 2026715 AMAQI
24th Jul 2026706 AMAQI
24th Jul 2026707 AMAQI
24th Jul 2026668 AMAQI
24th Jul 2026659 AMAQI
24th Jul 20267810 AMAQI
24th Jul 20268811 AMAQI
24th Jul 20269212 PMAQI
24th Jul 2026871 PMAQI
24th Jul 2026892 PMAQI
24th Jul 2026873 PMAQI
24th Jul 2026844 PMAQI
24th Jul 2026855 PMAQI
24th Jul 2026806 PMAQI
24th Jul 2026817 PMAQI
24th Jul 2026808 PMAQI
24th Jul 2026789 PMAQI
24th Jul 20267110 PMAQI
24th Jul 20267611 PMAQI
25th Jul 20267612 AMAQI
25th Jul 2026751 AMAQI
25th Jul 2026662 AMAQI
25th Jul 2026623 AMAQI
25th Jul 2026504 AMAQI
29°C25/35°C
25th Jul 2026465 AMAQI
25th Jul 2026386 AMAQI
25th Jul 2026367 AMAQI
25th Jul 2026318 AMAQI
25th Jul 2026239 AMAQI
25th Jul 20262110 AMAQI
25th Jul 20262111 AMAQI
25th Jul 20262312 PMAQI
25th Jul 2026251 PMAQI
25th Jul 2026252 PMAQI
25th Jul 2026363 PMAQI
25th Jul 2026444 PMAQI
25th Jul 2026335 PMAQI
25th Jul 2026336 PMAQI
25th Jul 2026247 PMAQI
25th Jul 2026258 PMAQI
25th Jul 2026309 PMAQI
25th Jul 20262710 PMAQI
25th Jul 20262811 PMAQI
26th Jul 20262512 AMAQI
26th Jul 2026231 AMAQI
26th Jul 2026232 AMAQI
26th Jul 2026233 AMAQI
26th Jul 2026254 AMAQI
30°C26/35°C
26th Jul 2026215 AMAQI
26th Jul 2026216 AMAQI
26th Jul 2026217 AMAQI
26th Jul 2026218 AMAQI
26th Jul 2026239 AMAQI
26th Jul 20262510 AMAQI
26th Jul 20262511 AMAQI
26th Jul 20262912 PMAQI
26th Jul 2026361 PMAQI
26th Jul 2026422 PMAQI
26th Jul 2026423 PMAQI
26th Jul 2026464 PMAQI
26th Jul 2026465 PMAQI
26th Jul 2026516 PMAQI
26th Jul 2026547 PMAQI
26th Jul 2026558 PMAQI
26th Jul 2026569 PMAQI
26th Jul 20265610 PMAQI
26th Jul 20265511 PMAQI
27th Jul 20265312 AMAQI
27th Jul 2026551 AMAQI
27th Jul 2026542 AMAQI
27th Jul 2026573 AMAQI
27th Jul 2026574 AMAQI
29°C26/33°C
27th Jul 2026525 AMAQI
27th Jul 2026486 AMAQI
27th Jul 2026467 AMAQI
27th Jul 2026368 AMAQI
27th Jul 2026279 AMAQI
27th Jul 20262710 AMAQI
27th Jul 20262111 AMAQI
27th Jul 20262512 PMAQI
27th Jul 2026251 PMAQI
27th Jul 2026242 PMAQI
27th Jul 2026253 PMAQI
27th Jul 2026404 PMAQI
27th Jul 2026425 PMAQI
27th Jul 2026486 PMAQI
27th Jul 2026367 PMAQI
27th Jul 2026388 PMAQI
27th Jul 2026279 PMAQI
27th Jul 20262310 PMAQI
27th Jul 20262511 PMAQI
28th Jul 20262512 AMAQI
28th Jul 2026251 AMAQI
28th Jul 2026252 AMAQI
28th Jul 2026273 AMAQI
28th Jul 2026254 AMAQI
29°C27/32°C
28th Jul 2026275 AMAQI
28th Jul 2026276 AMAQI
28th Jul 2026237 AMAQI
28th Jul 2026218 AMAQI
28th Jul 2026219 AMAQI
28th Jul 20262110 AMAQI
28th Jul 20262111 AMAQI
28th Jul 20262112 PMAQI
28th Jul 2026251 PMAQI
28th Jul 2026252 PMAQI
28th Jul 2026313 PMAQI
28th Jul 2026314 PMAQI
28th Jul 2026325 PMAQI
28th Jul 2026336 PMAQI
28th Jul 2026337 PMAQI
28th Jul 2026338 PMAQI
28th Jul 2026429 PMAQI
28th Jul 20263810 PMAQI
28th Jul 20263811 PMAQI
29th Jul 20264212 AMAQI
29th Jul 2026361 AMAQI
29th Jul 2026292 AMAQI
29th Jul 2026253 AMAQI
29th Jul 2026464 AMAQI
29°C27/32°C
29th Jul 2026525 AMAQI
29th Jul 2026476 AMAQI
29th Jul 2026447 AMAQI
29th Jul 2026368 AMAQI
29th Jul 2026369 AMAQI
29th Jul 20265110 AMAQI
29th Jul 20265011 AMAQI
29th Jul 20264812 PMAQI
29th Jul 2026511 PMAQI
29th Jul 2026522 PMAQI
29th Jul 2026603 PMAQI
29th Jul 2026584 PMAQI
29th Jul 2026485 PMAQI
29th Jul 2026446 PMAQI
29th Jul 2026387 PMAQI
29th Jul 2026368 PMAQI
29th Jul 2026409 PMAQI
29th Jul 20265110 PMAQI
29th Jul 20265811 PMAQI
30th Jul 20266212 AMAQI
30th Jul 2026571 AMAQI
30th Jul 2026562 AMAQI
30th Jul 2026523 AMAQI
30th Jul 2026464 AMAQI
30°C25/36°C
30th Jul 2026585 AMAQI
30th Jul 2026606 AMAQI
30th Jul 2026627 AMAQI
30th Jul 2026828 AMAQI
30th Jul 2026889 AMAQI
30th Jul 20267610 AMAQI
30th Jul 20266711 AMAQI
30th Jul 20264212 PMAQI
30th Jul 2026511 PMAQI
30th Jul 2026482 PMAQI
30th Jul 2026383 PMAQI
30th Jul 2026324 PMAQI
30th Jul 2026255 PMAQI
30th Jul 2026386 PMAQI
30th Jul 2026347 PMAQI
30th Jul 2026428 PMAQI
30th Jul 2026549 PMAQI
30th Jul 20267110 PMAQI
30th Jul 20267811 PMAQI
31st Jul 20267312 AMAQI
31st Jul 2026671 AMAQI
31st Jul 2026642 AMAQI
31st Jul 2026713 AMAQI
31st Jul 2026704 AMAQI
31°C27/37°C
31st Jul 2026695 AMAQI
31st Jul 2026696 AMAQI
31st Jul 2026767 AMAQI
31st Jul 2026748 AMAQI
31st Jul 2026679 AMAQI
31st Jul 20267410 AMAQI
31st Jul 20267811 AMAQI
31st Jul 20267412 PMAQI
31st Jul 2026591 PMAQI
31st Jul 2026562 PMAQI
31st Jul 2026603 PMAQI
31st Jul 2026574 PMAQI
31st Jul 2026595 PMAQI
31st Jul 2026686 PMAQI
31st Jul 2026707 PMAQI
31st Jul 2026688 PMAQI
31st Jul 2026949 PMAQI
31st Jul 20269510 PMAQI
31st Jul 20269811 PMAQI
1st Aug 202610412 AMAQI
1st Aug 20261051 AMAQI
1st Aug 20261012 AMAQI
1st Aug 2026993 AMAQI
1st Aug 2026994 AMAQI
30°C26/36°C
1st Aug 20261045 AMAQI
1st Aug 20261156 AMAQI
1st Aug 20261167 AMAQI
1st Aug 20261088 AMAQI
1st Aug 2026959 AMAQI
1st Aug 20269510 AMAQI
1st Aug 20268311 AMAQI
1st Aug 20267312 PMAQI
1st Aug 2026531 PMAQI
1st Aug 2026422 PMAQI
1st Aug 2026343 PMAQI
1st Aug 2026324 PMAQI
1st Aug 2026445 PMAQI
1st Aug 2026526 PMAQI
1st Aug 2026487 PMAQI
1st Aug 2026628 PMAQI
1st Aug 2026769 PMAQI
1st Aug 20268610 PMAQI
1st Aug 20269311 PMAQI
2nd Aug 20269012 AMAQI
2nd Aug 20261021 AMAQI
2nd Aug 20261022 AMAQI
2nd Aug 2026843 AMAQI
2nd Aug 2026824 AMAQI
30°C26/36°C
2nd Aug 2026845 AMAQI
2nd Aug 2026886 AMAQI
2nd Aug 2026887 AMAQI
2nd Aug 2026868 AMAQI
2nd Aug 2026839 AMAQI
2nd Aug 20268210 AMAQI
2nd Aug 20267411 AMAQI
2nd Aug 20267012 PMAQI
2nd Aug 2026641 PMAQI
2nd Aug 2026552 PMAQI
2nd Aug 2026553 PMAQI
2nd Aug 2026474 PMAQI
2nd Aug 2026305 PMAQI
2nd Aug 2026226 PMAQI
2nd Aug 2026217 PMAQI
2nd Aug 2026258 PMAQI
2nd Aug 2026429 PMAQI
2nd Aug 20266410 PMAQI
2nd Aug 20267811 PMAQI
3rd Aug 20268512 AMAQI
3rd Aug 20261051 AMAQI
3rd Aug 20261082 AMAQI
3rd Aug 20261023 AMAQI
3rd Aug 20261124 AMAQI
30°C27/36°C
3rd Aug 20261105 AMAQI
3rd Aug 20261226 AMAQI
3rd Aug 20261267 AMAQI
3rd Aug 20261308 AMAQI
3rd Aug 20261269 AMAQI
3rd Aug 20269810 AMAQI
3rd Aug 20267611 AMAQI
3rd Aug 20265612 PMAQI
3rd Aug 2026481 PMAQI
3rd Aug 2026442 PMAQI
3rd Aug 2026363 PMAQI
3rd Aug 2026314 PMAQI
3rd Aug 2026365 PMAQI
3rd Aug 2026336 PMAQI
3rd Aug 2026387 PMAQI
3rd Aug 2026408 PMAQI
3rd Aug 2026409 PMAQI
3rd Aug 20263310 PMAQI
3rd Aug 20264211 PMAQI
4th Aug 20265112 AMAQI
4th Aug 2026541 AMAQI
4th Aug 2026532 AMAQI
4th Aug 2026503 AMAQI
4th Aug 2026484 AMAQI
29°C26/34°C
4th Aug 2026545 AMAQI
4th Aug 2026606 AMAQI
4th Aug 2026697 AMAQI
4th Aug 2026688 AMAQI
4th Aug 2026589 AMAQI
4th Aug 20263110 AMAQI
4th Aug 20262511 AMAQI
4th Aug 20262112 PMAQI
4th Aug 2026211 PMAQI
4th Aug 2026212 PMAQI
4th Aug 2026233 PMAQI
4th Aug 2026254 PMAQI
4th Aug 2026255 PMAQI
4th Aug 2026366 PMAQI
4th Aug 2026447 PMAQI
4th Aug 2026648 PMAQI
4th Aug 2026699 PMAQI
4th Aug 20267810 PMAQI
4th Aug 20268111 PMAQI
5th Aug 20267012 AMAQI
5th Aug 2026621 AMAQI
5th Aug 2026562 AMAQI
5th Aug 2026503 AMAQI
5th Aug 2026444 AMAQI
29°C25/34°C
5th Aug 2026465 AMAQI
5th Aug 2026486 AMAQI
5th Aug 2026527 AMAQI
5th Aug 2026568 AMAQI
5th Aug 2026569 AMAQI
5th Aug 20265910 AMAQI
5th Aug 20266211 AMAQI
5th Aug 20267412 PMAQI
5th Aug 2026801 PMAQI
5th Aug 2026852 PMAQI
5th Aug 2026823 PMAQI
5th Aug 2026694 PMAQI
5th Aug 2026665 PMAQI
5th Aug 2026626 PMAQI
5th Aug 2026597 PMAQI
5th Aug 2026588 PMAQI
5th Aug 2026649 PMAQI
5th Aug 20267010 PMAQI
5th Aug 20266211 PMAQI
6th Aug 20265912 AMAQI
6th Aug 2026601 AMAQI
6th Aug 2026602 AMAQI
6th Aug 2026603 AMAQI
6th Aug 2026624 AMAQI
30°C27/34°C
6th Aug 2026585 AMAQI
6th Aug 2026516 AMAQI
6th Aug 2026537 AMAQI
6th Aug 2026578 AMAQI
6th Aug 2026429 AMAQI
6th Aug 20263810 AMAQI
6th Aug 20262711 AMAQI
6th Aug 20262512 PMAQI
6th Aug 2026251 PMAQI
6th Aug 2026272 PMAQI
6th Aug 2026293 PMAQI
6th Aug 2026384 PMAQI
6th Aug 2026365 PMAQI
6th Aug 2026296 PMAQI
6th Aug 2026297 PMAQI
6th Aug 2026298 PMAQI
6th Aug 2026319 PMAQI
6th Aug 20263310 PMAQI
6th Aug 20264011 PMAQI
7th Aug 20265312 AMAQI
7th Aug 2026511 AMAQI
7th Aug 2026462 AMAQI
7th Aug 2026513 AMAQI
7th Aug 2026524 AMAQI
29°C26/33°C
7th Aug 2026485 AMAQI
7th Aug 2026446 AMAQI
7th Aug 2026487 AMAQI
7th Aug 2026468 AMAQI
7th Aug 2026489 AMAQI
7th Aug 20264610 AMAQI
7th Aug 20264411 AMAQI
7th Aug 20264612 PMAQI
7th Aug 2026361 PMAQI
7th Aug 2026332 PMAQI
7th Aug 2026363 PMAQI
7th Aug 2026334 PMAQI
7th Aug 2026365 PMAQI
7th Aug 2026406 PMAQI
7th Aug 2026367 PMAQI
7th Aug 2026348 PMAQI
7th Aug 2026489 PMAQI
7th Aug 20265710 PMAQI
7th Aug 20265611 PMAQI
8th Aug 20268012 AMAQI
8th Aug 2026801 AMAQI
8th Aug 2026742 AMAQI
8th Aug 2026673 AMAQI
8th Aug 2026744 AMAQI
29°C26/33°C
8th Aug 2026715 AMAQI
8th Aug 2026686 AMAQI
8th Aug 2026867 AMAQI
8th Aug 2026818 AMAQI
8th Aug 2026829 AMAQI
8th Aug 20266410 AMAQI
8th Aug 20265011 AMAQI
8th Aug 20264012 PMAQI
8th Aug 2026331 PMAQI
8th Aug 2026292 PMAQI
8th Aug 2026213 PMAQI
8th Aug 2026254 PMAQI
8th Aug 2026295 PMAQI
8th Aug 2026296 PMAQI
8th Aug 2026237 PMAQI
8th Aug 2026258 PMAQI
8th Aug 2026299 PMAQI
8th Aug 20262710 PMAQI
8th Aug 20262711 PMAQI
9th Aug 20262912 AMAQI
9th Aug 2026291 AMAQI
9th Aug 2026232 AMAQI
9th Aug 2026343 AMAQI
9th Aug 2026314 AMAQI
29°C27/33°C
9th Aug 2026275 AMAQI
9th Aug 2026426 AMAQI
9th Aug 2026217 AMAQI
9th Aug 2026298 AMAQI
9th Aug 2026259 AMAQI
9th Aug 20262510 AMAQI
9th Aug 20262111 AMAQI
9th Aug 20263612 PMAQI
9th Aug 2026361 PMAQI
9th Aug 2026272 PMAQI
9th Aug 2026313 PMAQI
9th Aug 2026294 PMAQI
9th Aug 2026215 PMAQI
9th Aug 2026216 PMAQI
9th Aug 2026257 PMAQI
9th Aug 2026258 PMAQI
9th Aug 2026239 PMAQI
9th Aug 20262110 PMAQI
9th Aug 20262511 PMAQI
10th Aug 20262312 AMAQI
10th Aug 2026231 AMAQI
10th Aug 2026272 AMAQI
10th Aug 2026253 AMAQI
10th Aug 2026214 AMAQI
26°C25/27°C
10th Aug 2026255 AMAQI
10th Aug 2026216 AMAQI
10th Aug 2026217 AMAQI
10th Aug 2026218 AMAQI
10th Aug 2026259 AMAQI
10th Aug 20262510 AMAQI
10th Aug 20262511 AMAQI
10th Aug 20265112 PMAQI
10th Aug 2026331 PMAQI
10th Aug 2026362 PMAQI
10th Aug 2026533 PMAQI
10th Aug 2026404 PMAQI
10th Aug 2026255 PMAQI
10th Aug 2026346 PMAQI
10th Aug 2026267 PMAQI
10th Aug 2026278 PMAQI
10th Aug 2026239 PMAQI
10th Aug 20264010 PMAQI
10th Aug 20264411 PMAQI
11th Aug 20264012 AMAQI
11th Aug 2026311 AMAQI
11th Aug 2026402 AMAQI
11th Aug 2026283 AMAQI
11th Aug 2026344 AMAQI
26°C26/27°C
11th Aug 2026385 AMAQI
11th Aug 2026406 AMAQI
11th Aug 2026407 AMAQI
11th Aug 2026348 AMAQI
11th Aug 2026509 AMAQI
11th Aug 20264610 AMAQI
11th Aug 20263611 AMAQI
11th Aug 20264212 PMAQI
11th Aug 2026501 PMAQI
11th Aug 2026382 PMAQI
11th Aug 2026483 PMAQI
11th Aug 2026444 PMAQI
11th Aug 2026315 PMAQI
11th Aug 2026386 PMAQI
11th Aug 2026527 PMAQI
11th Aug 2026488 PMAQI
11th Aug 2026459 PMAQI
11th Aug 20264710 PMAQI
11th Aug 20263611 PMAQI
12th Aug 20265612 AMAQI
12th Aug 2026541 AMAQI
12th Aug 2026572 AMAQI
12th Aug 2026553 AMAQI
12th Aug 2026584 AMAQI
26°C26/27°C
12th Aug 2026545 AMAQI
5 AM12th Aug 2026586 AMAQI
12th Aug 2026557 AMAQI
12th Aug 2026498 AMAQI
12th Aug 2026519 AMAQI
12th Aug 20264410 AMAQI
12th Aug 20264211 AMAQI
11 AM12th Aug 20264412 PMAQI
12th Aug 2026511 PMAQI
12th Aug 2026512 PMAQI
12th Aug 2026563 PMAQI
12th Aug 2026484 PMAQI
12th Aug 2026575 PMAQI
12th Aug 2026466 PMAQI
6 PM12th Aug 2026387 PMAQI
12th Aug 2026278 PMAQI
12th Aug 2026299 PMAQI
12th Aug 20263310 PMAQI
12th Aug 20263311 PMAQI
11 PM4 AM
27°C25/28°C
Day time
Avg. Highest Time
7 AM - 9 AM
57AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
5 PM
41AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 9 AM (Avg. 57), while the lowest AQI was between 5 PM to 5 PM (Avg. 41).
Night time
Avg. Highest Time
1 AM
54AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
7 PM
41AQI
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. 54), while the lowest AQI was between 7 PM to 7 PM (Avg. 41).
2026 Days Vs Air Quality
Hai Yu Sub Station, Changshu, Jiangsu, China
2026
35%
78
50%
111
11%
24
5%
11
Total number of days with different AQI categories in last 224 days in 2026 (141 days remaining)
Good
78 DaysModerate
111 DaysPoor
24 DaysUnhealthy
11 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 35%
Health Risk Level:
High
In 2026, 35% of 224 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
Hai Yu Sub Station, Changshu, Jiangsu, China
AQI levels in 2026
AQI (US)
PM₂.₅
PM₁₀
CO
SO₂
NO₂
O₃
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
-1th undefined 2026
1st January 2026
36AQI (US)
36AQI (US)
2nd January 2026
62AQI (US)
62AQI (US)
3rd January 2026
99AQI (US)
99AQI (US)
4th January 2026
149AQI (US)
149AQI (US)
5th January 2026
162AQI (US)
162AQI (US)
6th January 2026
156AQI (US)
156AQI (US)
7th January 2026
123AQI (US)
123AQI (US)
8th January 2026
148AQI (US)
148AQI (US)
9th January 2026
138AQI (US)
138AQI (US)
10th January 2026
112AQI (US)
112AQI (US)
11th January 2026
61AQI (US)
61AQI (US)
12th January 2026
79AQI (US)
79AQI (US)
13th January 2026
137AQI (US)
137AQI (US)
14th January 2026
151AQI (US)
151AQI (US)
15th January 2026
157AQI (US)
157AQI (US)
16th January 2026
182AQI (US)
182AQI (US)
17th January 2026
153AQI (US)
153AQI (US)
18th January 2026
69AQI (US)
69AQI (US)
19th January 2026
42AQI (US)
42AQI (US)
20th January 2026
53AQI (US)
53AQI (US)
21st January 2026
73AQI (US)
73AQI (US)
22nd January 2026
81AQI (US)
81AQI (US)
23rd January 2026
134AQI (US)
134AQI (US)
24th January 2026
151AQI (US)
151AQI (US)
25th January 2026
119AQI (US)
119AQI (US)
26th January 2026
44AQI (US)
44AQI (US)
27th January 2026
81AQI (US)
81AQI (US)
28th January 2026
76AQI (US)
76AQI (US)
29th January 2026
50AQI (US)
50AQI (US)
30th January 2026
52AQI (US)
52AQI (US)
31st January 2026
31AQI (US)
31AQI (US)
1st February 2026
110AQI (US)
110AQI (US)
2nd February 2026
147AQI (US)
147AQI (US)
3rd February 2026
113AQI (US)
113AQI (US)
4th February 2026
98AQI (US)
98AQI (US)
5th February 2026
156AQI (US)
156AQI (US)
6th February 2026
87AQI (US)
87AQI (US)
7th February 2026
59AQI (US)
59AQI (US)
8th February 2026
65AQI (US)
65AQI (US)
9th February 2026
66AQI (US)
66AQI (US)
10th February 2026
86AQI (US)
86AQI (US)
11th February 2026
140AQI (US)
140AQI (US)
12th February 2026
156AQI (US)
156AQI (US)
13th February 2026
152AQI (US)
152AQI (US)
14th February 2026
141AQI (US)
141AQI (US)
15th February 2026
155AQI (US)
155AQI (US)
16th February 2026
56AQI (US)
56AQI (US)
17th February 2026
88AQI (US)
88AQI (US)
18th February 2026
148AQI (US)
148AQI (US)
19th February 2026
141AQI (US)
141AQI (US)
20th February 2026
97AQI (US)
97AQI (US)
21st February 2026
89AQI (US)
89AQI (US)
22nd February 2026
91AQI (US)
91AQI (US)
23rd February 2026
58AQI (US)
58AQI (US)
24th February 2026
38AQI (US)
38AQI (US)
25th February 2026
61AQI (US)
61AQI (US)
26th February 2026
46AQI (US)
46AQI (US)
27th February 2026
28AQI (US)
28AQI (US)
28th February 2026
63AQI (US)
63AQI (US)
1st March 2026
29AQI (US)
29AQI (US)
2nd March 2026
17AQI (US)
17AQI (US)
3rd March 2026
76AQI (US)
76AQI (US)
4th March 2026
27AQI (US)
27AQI (US)
5th March 2026
64AQI (US)
64AQI (US)
6th March 2026
90AQI (US)
90AQI (US)
7th March 2026
67AQI (US)
67AQI (US)
8th March 2026
34AQI (US)
34AQI (US)
9th March 2026
58AQI (US)
58AQI (US)
10th March 2026
39AQI (US)
39AQI (US)
11th March 2026
63AQI (US)
63AQI (US)
12th March 2026
68AQI (US)
68AQI (US)
13th March 2026
113AQI (US)
113AQI (US)
14th March 2026
76AQI (US)
76AQI (US)
15th March 2026
53AQI (US)
53AQI (US)
16th March 2026
102AQI (US)
102AQI (US)
17th March 2026
105AQI (US)
105AQI (US)
18th March 2026
80AQI (US)
80AQI (US)
19th March 2026
89AQI (US)
89AQI (US)
20th March 2026
83AQI (US)
83AQI (US)
21st March 2026
51AQI (US)
51AQI (US)
22nd March 2026
84AQI (US)
84AQI (US)
23rd March 2026
85AQI (US)
85AQI (US)
24th March 2026
89AQI (US)
89AQI (US)
25th March 2026
135AQI (US)
135AQI (US)
26th March 2026
78AQI (US)
78AQI (US)
27th March 2026
73AQI (US)
73AQI (US)
28th March 2026
69AQI (US)
69AQI (US)
29th March 2026
99AQI (US)
99AQI (US)
30th March 2026
76AQI (US)
76AQI (US)
31st March 2026
88AQI (US)
88AQI (US)
1st April 2026
126AQI (US)
126AQI (US)
2nd April 2026
139AQI (US)
139AQI (US)
3rd April 2026
64AQI (US)
64AQI (US)
4th April 2026
95AQI (US)
95AQI (US)
5th April 2026
103AQI (US)
103AQI (US)
6th April 2026
120AQI (US)
120AQI (US)
7th April 2026
44AQI (US)
44AQI (US)
8th April 2026
34AQI (US)
34AQI (US)
9th April 2026
39AQI (US)
39AQI (US)
10th April 2026
91AQI (US)
91AQI (US)
11th April 2026
99AQI (US)
99AQI (US)
12th April 2026
29AQI (US)
29AQI (US)
13th April 2026
38AQI (US)
38AQI (US)
14th April 2026
63AQI (US)
63AQI (US)
15th April 2026
59AQI (US)
59AQI (US)
16th April 2026
55AQI (US)
55AQI (US)
17th April 2026
81AQI (US)
81AQI (US)
18th April 2026
45AQI (US)
45AQI (US)
19th April 2026
50AQI (US)
50AQI (US)
20th April 2026
61AQI (US)
61AQI (US)
21st April 2026
59AQI (US)
59AQI (US)
22nd April 2026
33AQI (US)
33AQI (US)
23rd April 2026
24AQI (US)
24AQI (US)
24th April 2026
62AQI (US)
62AQI (US)
25th April 2026
61AQI (US)
61AQI (US)
26th April 2026
66AQI (US)
66AQI (US)
27th April 2026
99AQI (US)
99AQI (US)
28th April 2026
79AQI (US)
79AQI (US)
29th April 2026
34AQI (US)
34AQI (US)
30th April 2026
77AQI (US)
77AQI (US)
1st May 2026
80AQI (US)
80AQI (US)
2nd May 2026
66AQI (US)
66AQI (US)
3rd May 2026
76AQI (US)
76AQI (US)
4th May 2026
52AQI (US)
52AQI (US)
5th May 2026
69AQI (US)
69AQI (US)
6th May 2026
42AQI (US)
42AQI (US)
7th May 2026
66AQI (US)
66AQI (US)
8th May 2026
29AQI (US)
29AQI (US)
9th May 2026
38AQI (US)
38AQI (US)
10th May 2026
40AQI (US)
40AQI (US)
11th May 2026
63AQI (US)
63AQI (US)
12th May 2026
66AQI (US)
66AQI (US)
13th May 2026
66AQI (US)
66AQI (US)
14th May 2026
30AQI (US)
30AQI (US)
15th May 2026
29AQI (US)
29AQI (US)
16th May 2026
75AQI (US)
75AQI (US)
17th May 2026
62AQI (US)
62AQI (US)
18th May 2026
55AQI (US)
55AQI (US)
19th May 2026
52AQI (US)
52AQI (US)
20th May 2026
63AQI (US)
63AQI (US)
21st May 2026
68AQI (US)
68AQI (US)
22nd May 2026
80AQI (US)
80AQI (US)
23rd May 2026
71AQI (US)
71AQI (US)
24th May 2026
71AQI (US)
71AQI (US)
25th May 2026
63AQI (US)
63AQI (US)
26th May 2026
50AQI (US)
50AQI (US)
27th May 2026
66AQI (US)
66AQI (US)
28th May 2026
84AQI (US)
84AQI (US)
29th May 2026
58AQI (US)
58AQI (US)
30th May 2026
64AQI (US)
64AQI (US)
31st May 2026
43AQI (US)
43AQI (US)
1st June 2026
63AQI (US)
63AQI (US)
2nd June 2026
88AQI (US)
88AQI (US)
3rd June 2026
106AQI (US)
106AQI (US)
4th June 2026
100AQI (US)
100AQI (US)
5th June 2026
44AQI (US)
44AQI (US)
6th June 2026
20AQI (US)
20AQI (US)
7th June 2026
39AQI (US)
39AQI (US)
8th June 2026
46AQI (US)
46AQI (US)
9th June 2026
40AQI (US)
40AQI (US)
10th June 2026
48AQI (US)
48AQI (US)
11th June 2026
69AQI (US)
69AQI (US)
12th June 2026
82AQI (US)
82AQI (US)
13th June 2026
71AQI (US)
71AQI (US)
14th June 2026
24AQI (US)
24AQI (US)
15th June 2026
18AQI (US)
18AQI (US)
16th June 2026
46AQI (US)
46AQI (US)
17th June 2026
36AQI (US)
36AQI (US)
18th June 2026
77AQI (US)
77AQI (US)
19th June 2026
43AQI (US)
43AQI (US)
20th June 2026
37AQI (US)
37AQI (US)
21st June 2026
61AQI (US)
61AQI (US)
22nd June 2026
18AQI (US)
18AQI (US)
23rd June 2026
9AQI (US)
9AQI (US)
24th June 2026
19AQI (US)
19AQI (US)
25th June 2026
31AQI (US)
31AQI (US)
26th June 2026
57AQI (US)
57AQI (US)
27th June 2026
65AQI (US)
65AQI (US)
28th June 2026
77AQI (US)
77AQI (US)
29th June 2026
44AQI (US)
44AQI (US)
30th June 2026
30AQI (US)
30AQI (US)
1st July 2026
54AQI (US)
54AQI (US)
2nd July 2026
59AQI (US)
59AQI (US)
3rd July 2026
45AQI (US)
45AQI (US)
4th July 2026
34AQI (US)
34AQI (US)
5th July 2026
14AQI (US)
14AQI (US)
6th July 2026
30AQI (US)
30AQI (US)
7th July 2026
53AQI (US)
53AQI (US)
8th July 2026
24AQI (US)
24AQI (US)
9th July 2026
39AQI (US)
39AQI (US)
10th July 2026
27AQI (US)
27AQI (US)
11th July 2026
36AQI (US)
36AQI (US)
12th July 2026
30AQI (US)
30AQI (US)
13th July 2026
25AQI (US)
25AQI (US)
14th July 2026
42AQI (US)
42AQI (US)
15th July 2026
49AQI (US)
49AQI (US)
16th July 2026
41AQI (US)
41AQI (US)
17th July 2026
52AQI (US)
52AQI (US)
18th July 2026
71AQI (US)
71AQI (US)
19th July 2026
40AQI (US)
40AQI (US)
20th July 2026
43AQI (US)
43AQI (US)
21st July 2026
45AQI (US)
45AQI (US)
22nd July 2026
47AQI (US)
47AQI (US)
23rd July 2026
61AQI (US)
61AQI (US)
24th July 2026
80AQI (US)
80AQI (US)
25th July 2026
37AQI (US)
37AQI (US)
26th July 2026
35AQI (US)
35AQI (US)
27th July 2026
38AQI (US)
38AQI (US)
28th July 2026
28AQI (US)
28AQI (US)
29th July 2026
45AQI (US)
45AQI (US)
30th July 2026
55AQI (US)
55AQI (US)
31st July 2026
71AQI (US)
71AQI (US)
1st August 2026
80AQI (US)
80AQI (US)
2nd August 2026
67AQI (US)
67AQI (US)
3rd August 2026
74AQI (US)
74AQI (US)
4th August 2026
47AQI (US)
47AQI (US)
5th August 2026
62AQI (US)
62AQI (US)
6th August 2026
42AQI (US)
42AQI (US)
7th August 2026
44AQI (US)
44AQI (US)
8th August 2026
51AQI (US)
51AQI (US)
9th August 2026
27AQI (US)
27AQI (US)
10th August 2026
30AQI (US)
30AQI (US)
11th August 2026
41AQI (US)
41AQI (US)
12th August 2026
48AQI (US)
48AQI (US)
13th August 2026
14th August 2026
15th August 2026
16th August 2026
17th August 2026
18th August 2026
19th August 2026
20th August 2026
21st August 2026
22nd August 2026
23rd August 2026
24th August 2026
25th August 2026
26th August 2026
27th August 2026
28th August 2026
29th August 2026
30th August 2026
31st August 2026
1st September 2026
2nd September 2026
3rd September 2026
4th September 2026
5th September 2026
6th September 2026
7th September 2026
8th September 2026
9th September 2026
10th September 2026
11th September 2026
12th September 2026
13th September 2026
14th September 2026
15th September 2026
16th September 2026
17th September 2026
18th September 2026
19th September 2026
20th September 2026
21st September 2026
22nd September 2026
23rd September 2026
24th September 2026
25th September 2026
26th September 2026
27th September 2026
28th September 2026
29th September 2026
30th September 2026
1st October 2026
2nd October 2026
3rd October 2026
4th October 2026
5th October 2026
6th October 2026
7th October 2026
8th October 2026
9th October 2026
10th October 2026
11th October 2026
12th October 2026
13th October 2026
14th October 2026
15th October 2026
16th October 2026
17th October 2026
18th October 2026
19th October 2026
20th October 2026
21st October 2026
22nd October 2026
23rd October 2026
24th October 2026
25th October 2026
26th October 2026
27th October 2026
28th October 2026
29th October 2026
30th October 2026
31st October 2026
1st November 2026
2nd November 2026
3rd November 2026
4th November 2026
5th November 2026
6th November 2026
7th November 2026
8th November 2026
9th November 2026
10th November 2026
11th November 2026
12th November 2026
13th November 2026
14th November 2026
15th November 2026
16th November 2026
17th November 2026
18th November 2026
19th November 2026
20th November 2026
21st November 2026
22nd November 2026
23rd November 2026
24th November 2026
25th November 2026
26th November 2026
27th November 2026
28th November 2026
29th November 2026
30th November 2026
1st December 2026
2nd December 2026
3rd December 2026
4th December 2026
5th December 2026
6th December 2026
7th December 2026
8th December 2026
9th December 2026
10th December 2026
11th December 2026
12th December 2026
13th December 2026
14th December 2026
15th December 2026
16th December 2026
17th December 2026
18th December 2026
19th December 2026
20th December 2026
21st December 2026
22nd December 2026
23rd December 2026
24th December 2026
25th December 2026
26th December 2026
27th December 2026
28th December 2026
29th December 2026
30th December 2026
31st December 2026
102AQI (US)
98AQI (US)
73AQI (US)
68AQI (US)
59AQI (US)
50AQI (US)
44AQI (US)
51AQI (US)
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202669AQI (US)
5
11
8
7
3
14
7
4
5
22
4
10
16
4
8
23
18
11
1
22
9
7
5
78
111
24
11
Highest AQI (US) recorded in
January102AQI (US)
Lowest AQI (US) recorded in
July44AQI (US)
202580AQI (US)
11
17
3
16
10
2
20
11
19
10
1
30
1
6
24
14
17
3
28
5
25
3
27
1
2
15
8
5
2
13
13
3
35
245
71
14
Highest AQI (US) recorded in
January112AQI (US)
Lowest AQI (US) recorded in
July53AQI (US)
202474AQI (US)
16
1
1
3
9
30
9
22
3
28
14
15
12
16
3
8
18
4
9
21
1
49
147
28
19
Highest AQI (US) recorded in
March158AQI (US)
Lowest AQI (US) recorded in
July51AQI (US)
2023156AQI (US)
3
31
34
Highest AQI (US) recorded in
November156AQI (US)
Lowest AQI (US) recorded in
December156AQI (US)
202184AQI (US)
8
13
10
1
16
9
2
14
15
1
1
23
6
1
2
22
5
2
5
25
12
18
7
11
3
9
20
1
11
18
1
1
4
15
10
1
6
11
3
51
196
74
21
1
Highest AQI (US) recorded in
January120AQI (US)
Lowest AQI (US) recorded in
July54AQI (US)
202082AQI (US)
4
7
2
2
6
12
1
1
8
9
6
22
2
6
24
1
5
25
1
3
21
6
3
26
2
4
19
4
3
9
13
8
1
34
167
52
12
1
Highest AQI (US) recorded in
December129AQI (US)
Lowest AQI (US) recorded in
August64AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
156AQI (US)Least Polluted Year Recorded
2026(Avg.)
69AQI (US)Hai Yu Sub Station's annual 2026 AQI (US) (69) shows an average percentage change of -21.9% (improved AQI (US)) compared to previous years: 2020 (82), 2021 (84), 2023 (156), 2024 (74), 2025 (80).
