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HistoryAQIPM2.5PM10COSO2NO2O3

Chengdong Station, Shanhu, Zhejiang, 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+

October Air Quality Analysis

Chengdong Station, Shanhu, Zhejiang, China

2021
2022
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
31st Oct 2021
140AQI
Lowest AQI recorded on
9th Oct 2021
24AQI

Same Day Analysis (3rd October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 51 of Moderate air quality, showing improvement over 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025

Chengdong Station, Shanhu, Zhejiang, China

AQI
Day
Night
.

5 AM3rd Oct 2025

5 PM

4 AM4th Oct 2025

Day time
Avg. Highest Time
12AMNaNth undefined

AQI

Avg. Lowest Time
12AMNaNth undefined

AQI

Night time
Avg. Highest Time
8PM3rd Oct

133AQI

Avg. Lowest Time
9AM3rd Oct

37AQI

In the last 24 hours,

Chengdong Station's AQI reached its highest point of 133 at 8 PM during the Night, while the lowest point, 37, was recorded at 9 AM during the Night between 3rd Oct and 4th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Chengdong Station, Shanhu, Zhejiang, China

SepOct
04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
4th Sep 2025565 AMAQI
4th Sep 2025556 AMAQI
4th Sep 2025567 AMAQI
4th Sep 2025668 AMAQI
4th Sep 2025649 AMAQI
4th Sep 20255910 AMAQI
4th Sep 20255811 AMAQI
4th Sep 20256212 PMAQI
4th Sep 2025641 PMAQI
4th Sep 2025642 PMAQI
4th Sep 2025613 PMAQI
4th Sep 2025794 PMAQI
4th Sep 20251015 PMAQI
4th Sep 20251206 PMAQI
4th Sep 20251007 PMAQI
4th Sep 2025778 PMAQI
4th Sep 2025749 PMAQI
4th Sep 20256910 PMAQI
4th Sep 20257111 PMAQI
5th Sep 20256812 AMAQI
5th Sep 2025551 AMAQI
5th Sep 2025552 AMAQI
5th Sep 2025563 AMAQI
5th Sep 2025554 AMAQI

28°C23/37°C

5th Sep 2025565 AMAQI
5th Sep 2025566 AMAQI
5th Sep 2025567 AMAQI
5th Sep 2025728 AMAQI
5th Sep 2025759 AMAQI
5th Sep 20255810 AMAQI
5th Sep 20256411 AMAQI
5th Sep 20256312 PMAQI
5th Sep 2025641 PMAQI
5th Sep 2025652 PMAQI
5th Sep 2025683 PMAQI
5th Sep 2025634 PMAQI
5th Sep 2025695 PMAQI
5th Sep 2025596 PMAQI
5th Sep 2025607 PMAQI
5th Sep 2025608 PMAQI
5th Sep 2025579 PMAQI
5th Sep 20256110 PMAQI
5th Sep 20255811 PMAQI
6th Sep 20256212 AMAQI
6th Sep 2025631 AMAQI
6th Sep 2025642 AMAQI
6th Sep 2025623 AMAQI
6th Sep 2025594 AMAQI

28°C23/37°C

6th Sep 2025605 AMAQI
6th Sep 2025596 AMAQI
6th Sep 2025587 AMAQI
6th Sep 2025548 AMAQI
6th Sep 2025469 AMAQI
6th Sep 20255010 AMAQI
6th Sep 20256111 AMAQI
6th Sep 20255712 PMAQI
6th Sep 2025561 PMAQI
6th Sep 2025572 PMAQI
6th Sep 2025583 PMAQI
6th Sep 2025644 PMAQI
6th Sep 2025605 PMAQI
6th Sep 2025546 PMAQI
6th Sep 2025607 PMAQI
6th Sep 2025608 PMAQI
6th Sep 2025669 PMAQI
6th Sep 20256210 PMAQI
6th Sep 20256111 PMAQI
7th Sep 20256212 AMAQI
7th Sep 2025591 AMAQI
7th Sep 2025592 AMAQI
7th Sep 2025613 AMAQI
7th Sep 2025584 AMAQI

29°C23/37°C

7th Sep 2025605 AMAQI
7th Sep 2025596 AMAQI
7th Sep 2025597 AMAQI
7th Sep 2025608 AMAQI
7th Sep 2025669 AMAQI
7th Sep 20255810 AMAQI
7th Sep 20256411 AMAQI
7th Sep 20256312 PMAQI
7th Sep 2025601 PMAQI
7th Sep 2025582 PMAQI
7th Sep 2025593 PMAQI
7th Sep 2025584 PMAQI
7th Sep 2025655 PMAQI
7th Sep 2025726 PMAQI
7th Sep 2025717 PMAQI
7th Sep 2025618 PMAQI
7th Sep 2025629 PMAQI
7th Sep 20256010 PMAQI
7th Sep 20256011 PMAQI
8th Sep 20255812 AMAQI
8th Sep 2025601 AMAQI
8th Sep 2025592 AMAQI
8th Sep 2025593 AMAQI
8th Sep 2025604 AMAQI

29°C23/37°C

8th Sep 2025595 AMAQI
8th Sep 2025606 AMAQI
8th Sep 2025617 AMAQI
8th Sep 2025588 AMAQI
8th Sep 2025559 AMAQI
8th Sep 20255210 AMAQI
8th Sep 20255411 AMAQI
8th Sep 20255012 PMAQI
8th Sep 2025431 PMAQI
8th Sep 2025442 PMAQI
8th Sep 2025503 PMAQI
8th Sep 2025514 PMAQI
8th Sep 2025455 PMAQI
8th Sep 2025506 PMAQI
8th Sep 2025557 PMAQI
8th Sep 2025638 PMAQI
8th Sep 2025609 PMAQI
8th Sep 20255810 PMAQI
8th Sep 20255611 PMAQI
9th Sep 20255912 AMAQI
9th Sep 2025601 AMAQI
9th Sep 2025602 AMAQI
9th Sep 2025603 AMAQI
9th Sep 2025604 AMAQI

30°C23/38°C

9th Sep 2025595 AMAQI
9th Sep 2025606 AMAQI
9th Sep 2025607 AMAQI
9th Sep 2025548 AMAQI
9th Sep 2025539 AMAQI
9th Sep 20255810 AMAQI
9th Sep 20256211 AMAQI
9th Sep 20255912 PMAQI
9th Sep 2025591 PMAQI
9th Sep 2025602 PMAQI
9th Sep 2025563 PMAQI
9th Sep 2025504 PMAQI
9th Sep 2025475 PMAQI
9th Sep 2025476 PMAQI
9th Sep 2025527 PMAQI
9th Sep 2025588 PMAQI
9th Sep 2025559 PMAQI
9th Sep 20255410 PMAQI
9th Sep 20255411 PMAQI
10th Sep 20255812 AMAQI
10th Sep 2025591 AMAQI
10th Sep 2025602 AMAQI
10th Sep 2025613 AMAQI
10th Sep 2025604 AMAQI

27°C23/34°C

10th Sep 2025605 AMAQI
10th Sep 2025606 AMAQI
10th Sep 2025597 AMAQI
10th Sep 2025388 AMAQI
10th Sep 2025329 AMAQI
10th Sep 20253610 AMAQI
10th Sep 20254811 AMAQI
10th Sep 20254312 PMAQI
10th Sep 2025481 PMAQI
10th Sep 2025492 PMAQI
10th Sep 2025483 PMAQI
10th Sep 2025554 PMAQI
10th Sep 2025505 PMAQI
10th Sep 2025526 PMAQI
10th Sep 2025567 PMAQI
10th Sep 2025588 PMAQI
10th Sep 2025569 PMAQI
10th Sep 20255610 PMAQI
10th Sep 20255611 PMAQI
11th Sep 20255712 AMAQI
11th Sep 2025581 AMAQI
11th Sep 2025582 AMAQI
11th Sep 2025583 AMAQI
11th Sep 2025584 AMAQI

26°C24/31°C

11th Sep 2025575 AMAQI
11th Sep 2025586 AMAQI
11th Sep 2025577 AMAQI
11th Sep 2025558 AMAQI
11th Sep 2025569 AMAQI
11th Sep 20255210 AMAQI
11th Sep 20255411 AMAQI
11th Sep 20255312 PMAQI
11th Sep 2025501 PMAQI
11th Sep 2025522 PMAQI
11th Sep 2025513 PMAQI
11th Sep 2025474 PMAQI
11th Sep 2025545 PMAQI
11th Sep 2025506 PMAQI
11th Sep 2025547 PMAQI
11th Sep 2025588 PMAQI
11th Sep 2025589 PMAQI
11th Sep 20255610 PMAQI
11th Sep 20255711 PMAQI
12th Sep 20255612 AMAQI
12th Sep 2025581 AMAQI
12th Sep 2025582 AMAQI
12th Sep 2025583 AMAQI
12th Sep 2025584 AMAQI

26°C22/32°C

12th Sep 2025595 AMAQI
12th Sep 2025586 AMAQI
12th Sep 2025587 AMAQI
12th Sep 2025588 AMAQI
12th Sep 2025549 AMAQI
12th Sep 20255310 AMAQI
12th Sep 20255111 AMAQI
12th Sep 20254612 PMAQI
12th Sep 2025421 PMAQI
12th Sep 2025442 PMAQI
12th Sep 2025443 PMAQI
12th Sep 2025484 PMAQI
12th Sep 2025465 PMAQI
12th Sep 2025426 PMAQI
12th Sep 2025537 PMAQI
12th Sep 2025598 PMAQI
12th Sep 2025609 PMAQI
12th Sep 20255610 PMAQI
12th Sep 20255611 PMAQI
13th Sep 20255712 AMAQI
13th Sep 2025581 AMAQI
13th Sep 2025582 AMAQI
13th Sep 2025573 AMAQI
13th Sep 2025564 AMAQI

28°C23/35°C

13th Sep 2025575 AMAQI
13th Sep 2025566 AMAQI
13th Sep 2025567 AMAQI
13th Sep 2025558 AMAQI
13th Sep 2025539 AMAQI
13th Sep 20255510 AMAQI
13th Sep 20255811 AMAQI
13th Sep 20255912 PMAQI
13th Sep 2025591 PMAQI
13th Sep 2025572 PMAQI
13th Sep 2025543 PMAQI
13th Sep 2025514 PMAQI
13th Sep 2025515 PMAQI
13th Sep 2025526 PMAQI
13th Sep 2025527 PMAQI
13th Sep 2025568 PMAQI
13th Sep 2025549 PMAQI
13th Sep 20255210 PMAQI
13th Sep 20255311 PMAQI
14th Sep 20255412 AMAQI
14th Sep 2025571 AMAQI
14th Sep 2025572 AMAQI
14th Sep 2025573 AMAQI
14th Sep 2025574 AMAQI

28°C24/35°C

14th Sep 2025585 AMAQI
14th Sep 2025576 AMAQI
14th Sep 2025577 AMAQI
14th Sep 2025508 AMAQI
14th Sep 2025469 AMAQI
14th Sep 20254110 AMAQI
14th Sep 20254511 AMAQI
14th Sep 20253712 PMAQI
14th Sep 2025431 PMAQI
14th Sep 2025482 PMAQI
14th Sep 2025483 PMAQI
14th Sep 2025564 PMAQI
14th Sep 2025465 PMAQI
14th Sep 2025466 PMAQI
14th Sep 2025527 PMAQI
14th Sep 2025538 PMAQI
14th Sep 2025549 PMAQI
14th Sep 20255510 PMAQI
14th Sep 20255411 PMAQI
15th Sep 20255412 AMAQI
15th Sep 2025561 AMAQI
15th Sep 2025572 AMAQI
15th Sep 2025563 AMAQI
15th Sep 2025564 AMAQI

28°C23/35°C

15th Sep 2025555 AMAQI
15th Sep 2025566 AMAQI
15th Sep 2025567 AMAQI
15th Sep 2025548 AMAQI
15th Sep 2025629 AMAQI
15th Sep 20256010 AMAQI
15th Sep 20256011 AMAQI
15th Sep 20256112 PMAQI
15th Sep 2025611 PMAQI
15th Sep 2025572 PMAQI
15th Sep 2025513 PMAQI
15th Sep 2025474 PMAQI
15th Sep 2025485 PMAQI
15th Sep 2025546 PMAQI
15th Sep 2025617 PMAQI
15th Sep 2025588 PMAQI
15th Sep 2025609 PMAQI
15th Sep 20255810 PMAQI
15th Sep 20255611 PMAQI
16th Sep 20255612 AMAQI
16th Sep 2025561 AMAQI
16th Sep 2025562 AMAQI
16th Sep 2025563 AMAQI
16th Sep 2025564 AMAQI

28°C23/36°C

16th Sep 2025565 AMAQI
16th Sep 2025566 AMAQI
16th Sep 2025567 AMAQI
16th Sep 2025508 AMAQI
16th Sep 2025499 AMAQI
16th Sep 20253310 AMAQI
16th Sep 20253811 AMAQI
16th Sep 20255012 PMAQI
16th Sep 2025501 PMAQI
16th Sep 2025522 PMAQI
16th Sep 2025533 PMAQI
16th Sep 2025524 PMAQI
16th Sep 2025615 PMAQI
16th Sep 2025626 PMAQI
16th Sep 2025587 PMAQI
16th Sep 2025608 PMAQI
16th Sep 2025599 PMAQI
16th Sep 20255510 PMAQI
16th Sep 20255311 PMAQI
17th Sep 20255412 AMAQI
17th Sep 2025561 AMAQI
17th Sep 2025562 AMAQI
17th Sep 2025563 AMAQI
17th Sep 2025564 AMAQI

28°C22/36°C

17th Sep 2025555 AMAQI
17th Sep 2025556 AMAQI
17th Sep 2025557 AMAQI
17th Sep 2025558 AMAQI
17th Sep 2025549 AMAQI
17th Sep 20255010 AMAQI
17th Sep 20255711 AMAQI
17th Sep 20256212 PMAQI
17th Sep 2025581 PMAQI
17th Sep 2025562 PMAQI
17th Sep 2025603 PMAQI
17th Sep 2025594 PMAQI
17th Sep 2025545 PMAQI
17th Sep 2025506 PMAQI
17th Sep 2025557 PMAQI
17th Sep 2025568 PMAQI
17th Sep 2025549 PMAQI
17th Sep 20255410 PMAQI
17th Sep 20255611 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025561 AMAQI
18th Sep 2025562 AMAQI
18th Sep 2025563 AMAQI
18th Sep 2025564 AMAQI

28°C23/36°C

18th Sep 2025555 AMAQI
18th Sep 2025556 AMAQI
18th Sep 2025557 AMAQI
18th Sep 2025548 AMAQI
18th Sep 2025549 AMAQI
18th Sep 20255310 AMAQI
18th Sep 20255211 AMAQI
18th Sep 20254912 PMAQI
18th Sep 2025441 PMAQI
18th Sep 2025462 PMAQI
18th Sep 2025513 PMAQI
18th Sep 2025534 PMAQI
18th Sep 2025545 PMAQI
18th Sep 2025546 PMAQI
18th Sep 2025547 PMAQI
18th Sep 2025568 PMAQI
18th Sep 2025579 PMAQI
18th Sep 20255610 PMAQI
18th Sep 20255411 PMAQI
19th Sep 20255412 AMAQI
19th Sep 2025561 AMAQI
19th Sep 2025542 AMAQI
19th Sep 2025553 AMAQI
19th Sep 2025574 AMAQI

26°C23/29°C

19th Sep 2025575 AMAQI
19th Sep 2025576 AMAQI
19th Sep 2025577 AMAQI
19th Sep 2025528 AMAQI
19th Sep 2025509 AMAQI
19th Sep 20255210 AMAQI
19th Sep 20254911 AMAQI
19th Sep 20254212 PMAQI
19th Sep 2025361 PMAQI
19th Sep 2025392 PMAQI
19th Sep 2025373 PMAQI
19th Sep 2025414 PMAQI
19th Sep 2025405 PMAQI
19th Sep 2025366 PMAQI
19th Sep 2025417 PMAQI
19th Sep 2025528 PMAQI
19th Sep 2025519 PMAQI
19th Sep 20255010 PMAQI
19th Sep 20255211 PMAQI
20th Sep 20255112 AMAQI
20th Sep 2025561 AMAQI
20th Sep 2025562 AMAQI
20th Sep 2025563 AMAQI
20th Sep 2025544 AMAQI

26°C22/33°C

20th Sep 2025545 AMAQI
20th Sep 2025546 AMAQI
20th Sep 2025557 AMAQI
20th Sep 2025528 AMAQI
20th Sep 2025509 AMAQI
20th Sep 20255110 AMAQI
20th Sep 20255011 AMAQI
20th Sep 20255112 PMAQI
20th Sep 2025501 PMAQI
20th Sep 2025522 PMAQI
20th Sep 2025563 PMAQI
20th Sep 2025554 PMAQI
20th Sep 2025545 PMAQI
20th Sep 2025636 PMAQI
20th Sep 2025617 PMAQI
20th Sep 2025628 PMAQI
20th Sep 2025609 PMAQI
20th Sep 20255810 PMAQI
20th Sep 20255711 PMAQI
21st Sep 20255412 AMAQI
21st Sep 2025561 AMAQI
21st Sep 2025552 AMAQI
21st Sep 2025553 AMAQI
21st Sep 2025554 AMAQI

22°C20/23°C

21st Sep 2025555 AMAQI
21st Sep 2025546 AMAQI
21st Sep 2025557 AMAQI
21st Sep 2025428 AMAQI
21st Sep 2025369 AMAQI
21st Sep 20254210 AMAQI
21st Sep 20254711 AMAQI
21st Sep 20255512 PMAQI
21st Sep 2025461 PMAQI
21st Sep 2025412 PMAQI
21st Sep 2025423 PMAQI
21st Sep 2025464 PMAQI
21st Sep 2025475 PMAQI
21st Sep 2025496 PMAQI
21st Sep 2025547 PMAQI
21st Sep 2025558 PMAQI
21st Sep 2025569 PMAQI
21st Sep 20255610 PMAQI
21st Sep 20255211 PMAQI
22nd Sep 20255312 AMAQI
22nd Sep 2025551 AMAQI
22nd Sep 2025552 AMAQI
22nd Sep 2025543 AMAQI
22nd Sep 2025544 AMAQI

22°C20/24°C

22nd Sep 2025545 AMAQI
22nd Sep 2025546 AMAQI
22nd Sep 2025547 AMAQI
22nd Sep 2025538 AMAQI
22nd Sep 2025509 AMAQI
22nd Sep 20254410 AMAQI
22nd Sep 20253411 AMAQI
22nd Sep 20253612 PMAQI
22nd Sep 2025371 PMAQI
22nd Sep 2025342 PMAQI
22nd Sep 2025313 PMAQI
22nd Sep 2025324 PMAQI
22nd Sep 2025345 PMAQI
22nd Sep 2025356 PMAQI
22nd Sep 2025467 PMAQI
22nd Sep 2025548 PMAQI
22nd Sep 2025569 PMAQI
22nd Sep 20255610 PMAQI
22nd Sep 20255711 PMAQI
23rd Sep 20255412 AMAQI
23rd Sep 2025521 AMAQI
23rd Sep 2025542 AMAQI
23rd Sep 2025523 AMAQI
23rd Sep 2025524 AMAQI

24°C20/30°C

23rd Sep 2025525 AMAQI
23rd Sep 2025526 AMAQI
23rd Sep 2025517 AMAQI
23rd Sep 2025438 AMAQI
23rd Sep 2025489 AMAQI
23rd Sep 20253510 AMAQI
23rd Sep 20253511 AMAQI
23rd Sep 20254012 PMAQI
23rd Sep 2025351 PMAQI
23rd Sep 2025332 PMAQI
23rd Sep 2025393 PMAQI
23rd Sep 2025324 PMAQI
23rd Sep 2025375 PMAQI
23rd Sep 2025366 PMAQI
23rd Sep 2025447 PMAQI
23rd Sep 2025508 PMAQI
23rd Sep 2025469 PMAQI
23rd Sep 20254810 PMAQI
23rd Sep 20254611 PMAQI
24th Sep 20255012 AMAQI
24th Sep 2025521 AMAQI
24th Sep 2025522 AMAQI
24th Sep 2025523 AMAQI
24th Sep 2025504 AMAQI

26°C22/32°C

24th Sep 2025515 AMAQI
24th Sep 2025506 AMAQI
24th Sep 2025507 AMAQI
24th Sep 2025308 AMAQI
24th Sep 2025319 AMAQI
24th Sep 20253210 AMAQI
24th Sep 20253511 AMAQI
24th Sep 20253612 PMAQI
24th Sep 2025371 PMAQI
24th Sep 2025342 PMAQI
24th Sep 2025373 PMAQI
24th Sep 2025384 PMAQI
24th Sep 2025345 PMAQI
24th Sep 2025426 PMAQI
24th Sep 2025467 PMAQI
24th Sep 2025498 PMAQI
24th Sep 2025519 PMAQI
24th Sep 20254910 PMAQI
24th Sep 20255011 PMAQI
25th Sep 20254812 AMAQI
25th Sep 2025511 AMAQI
25th Sep 2025502 AMAQI
25th Sep 2025493 AMAQI
25th Sep 2025464 AMAQI

26°C23/31°C

25th Sep 2025465 AMAQI
25th Sep 2025476 AMAQI
25th Sep 2025477 AMAQI
25th Sep 2025348 AMAQI
25th Sep 2025329 AMAQI
25th Sep 20253510 AMAQI
25th Sep 20253111 AMAQI
25th Sep 20253412 PMAQI
25th Sep 2025321 PMAQI
25th Sep 2025322 PMAQI
25th Sep 2025323 PMAQI
25th Sep 2025344 PMAQI
25th Sep 2025375 PMAQI
25th Sep 2025376 PMAQI
25th Sep 2025477 PMAQI
25th Sep 2025508 PMAQI
25th Sep 2025539 PMAQI
25th Sep 20255010 PMAQI
25th Sep 20254911 PMAQI
26th Sep 20254212 AMAQI
26th Sep 2025341 AMAQI
26th Sep 2025362 AMAQI
26th Sep 2025443 AMAQI
26th Sep 2025374 AMAQI

27°C23/34°C

26th Sep 2025325 AMAQI
26th Sep 2025326 AMAQI
26th Sep 2025337 AMAQI
26th Sep 2025328 AMAQI
26th Sep 2025359 AMAQI
26th Sep 20254610 AMAQI
26th Sep 20254611 AMAQI
26th Sep 20253812 PMAQI
26th Sep 2025381 PMAQI
26th Sep 2025472 PMAQI
26th Sep 2025423 PMAQI
26th Sep 2025374 PMAQI
26th Sep 2025365 PMAQI
26th Sep 2025446 PMAQI
26th Sep 2025547 PMAQI
26th Sep 2025608 PMAQI
26th Sep 2025659 PMAQI
26th Sep 20256710 PMAQI
26th Sep 20257611 PMAQI
27th Sep 20258112 AMAQI
27th Sep 2025811 AMAQI
27th Sep 2025852 AMAQI
27th Sep 2025793 AMAQI
27th Sep 2025724 AMAQI

27°C22/34°C

27th Sep 2025685 AMAQI
27th Sep 2025686 AMAQI
27th Sep 2025687 AMAQI
27th Sep 2025738 AMAQI
27th Sep 2025899 AMAQI
27th Sep 202510410 AMAQI
27th Sep 20259111 AMAQI
27th Sep 20257612 PMAQI
27th Sep 2025741 PMAQI
27th Sep 2025752 PMAQI
27th Sep 2025793 PMAQI
27th Sep 2025844 PMAQI
27th Sep 20251105 PMAQI
27th Sep 20251426 PMAQI
27th Sep 20251367 PMAQI
27th Sep 20251258 PMAQI
27th Sep 20251089 PMAQI
27th Sep 20259110 PMAQI
27th Sep 20258811 PMAQI
28th Sep 20259112 AMAQI
28th Sep 2025991 AMAQI
28th Sep 20251052 AMAQI
28th Sep 2025903 AMAQI
28th Sep 2025804 AMAQI

28°C23/35°C

28th Sep 2025705 AMAQI
28th Sep 2025696 AMAQI
28th Sep 2025717 AMAQI
28th Sep 2025698 AMAQI
28th Sep 2025659 AMAQI
28th Sep 20255010 AMAQI
28th Sep 20253411 AMAQI
28th Sep 20253912 PMAQI
28th Sep 2025401 PMAQI
28th Sep 2025472 PMAQI
28th Sep 2025563 PMAQI
28th Sep 2025724 PMAQI
28th Sep 2025925 PMAQI
28th Sep 20251096 PMAQI
28th Sep 20251227 PMAQI
28th Sep 20251308 PMAQI
28th Sep 20251269 PMAQI
28th Sep 202510410 PMAQI
28th Sep 20259811 PMAQI
29th Sep 202510012 AMAQI
29th Sep 2025941 AMAQI
29th Sep 2025822 AMAQI
29th Sep 2025763 AMAQI
29th Sep 2025884 AMAQI

28°C23/35°C

29th Sep 2025785 AMAQI
29th Sep 2025756 AMAQI
29th Sep 2025757 AMAQI
29th Sep 2025798 AMAQI
29th Sep 2025829 AMAQI
29th Sep 20257410 AMAQI
29th Sep 20257811 AMAQI
29th Sep 20258212 PMAQI
29th Sep 2025911 PMAQI
29th Sep 2025942 PMAQI
29th Sep 2025973 PMAQI
29th Sep 2025994 PMAQI
29th Sep 2025945 PMAQI
29th Sep 2025876 PMAQI
29th Sep 2025907 PMAQI
29th Sep 2025888 PMAQI
29th Sep 2025839 PMAQI
29th Sep 20257610 PMAQI
29th Sep 20257111 PMAQI
30th Sep 20257712 AMAQI
30th Sep 2025711 AMAQI
30th Sep 2025722 AMAQI
30th Sep 2025663 AMAQI
30th Sep 2025614 AMAQI

26°C23/31°C

30th Sep 2025635 AMAQI
30th Sep 2025696 AMAQI
30th Sep 2025687 AMAQI
30th Sep 2025658 AMAQI
30th Sep 2025659 AMAQI
30th Sep 20256410 AMAQI
30th Sep 20256611 AMAQI
30th Sep 20256612 PMAQI
30th Sep 2025721 PMAQI
30th Sep 2025782 PMAQI
30th Sep 2025723 PMAQI
30th Sep 2025824 PMAQI
30th Sep 2025875 PMAQI
30th Sep 2025716 PMAQI
30th Sep 2025607 PMAQI
30th Sep 2025508 PMAQI
30th Sep 2025569 PMAQI
30th Sep 20255610 PMAQI
30th Sep 20255611 PMAQI
1st Oct 20255412 AMAQI
1st Oct 2025551 AMAQI
1st Oct 2025562 AMAQI
1st Oct 2025573 AMAQI
1st Oct 2025594 AMAQI

25°C22/31°C

1st Oct 2025625 AMAQI
1st Oct 2025726 AMAQI
1st Oct 2025757 AMAQI
1st Oct 2025848 AMAQI
1st Oct 2025809 AMAQI
1st Oct 20258010 AMAQI
1st Oct 20258111 AMAQI
1st Oct 20258412 PMAQI
1st Oct 2025831 PMAQI
1st Oct 2025762 PMAQI
1st Oct 2025753 PMAQI
1st Oct 2025764 PMAQI
1st Oct 2025675 PMAQI
1st Oct 2025636 PMAQI
1st Oct 2025617 PMAQI
1st Oct 2025658 PMAQI
1st Oct 2025759 PMAQI
1st Oct 20257910 PMAQI
1st Oct 20258011 PMAQI
2nd Oct 20257412 AMAQI
2nd Oct 2025681 AMAQI
2nd Oct 2025632 AMAQI
2nd Oct 2025573 AMAQI
2nd Oct 2025564 AMAQI

24°C21/30°C

2nd Oct 2025565 AMAQI
2nd Oct 2025576 AMAQI
2nd Oct 2025577 AMAQI
2nd Oct 2025578 AMAQI
2nd Oct 2025549 AMAQI
2nd Oct 20255410 AMAQI
2nd Oct 20255211 AMAQI
2nd Oct 20254212 PMAQI
2nd Oct 2025431 PMAQI
2nd Oct 2025372 PMAQI
2nd Oct 2025483 PMAQI
2nd Oct 2025514 PMAQI
2nd Oct 2025545 PMAQI
2nd Oct 2025546 PMAQI
2nd Oct 2025547 PMAQI
2nd Oct 2025578 PMAQI
2nd Oct 2025549 PMAQI
2nd Oct 20255310 PMAQI
2nd Oct 20254711 PMAQI
3rd Oct 20255212 AMAQI
3rd Oct 2025551 AMAQI
3rd Oct 2025522 AMAQI
3rd Oct 2025523 AMAQI
3rd Oct 2025474 AMAQI

26°C21/34°C

3rd Oct 2025465 AMAQI
3rd Oct 2025476 AMAQI
3rd Oct 2025517 AMAQI
3rd Oct 2025398 AMAQI
3rd Oct 2025379 AMAQI
3rd Oct 20254310 AMAQI
3rd Oct 20255211 AMAQI
3rd Oct 20255712 PMAQI
3rd Oct 2025561 PMAQI
3rd Oct 2025612 PMAQI
3rd Oct 2025633 PMAQI
3rd Oct 2025834 PMAQI
3rd Oct 2025915 PMAQI
3rd Oct 2025886 PMAQI
3rd Oct 2025847 PMAQI
3rd Oct 20251338 PMAQI
3rd Oct 20251309 PMAQI
3rd Oct 202513310 PMAQI
3rd Oct 202513311 PMAQI
4th Oct 202512612 AMAQI
4th Oct 20251061 AMAQI
4th Oct 20251022 AMAQI
4th Oct 20251043 AMAQI
4th Oct 20251084 AMAQI

--°C/°C

5 AM
11 AM
5 PM
11 PM
4 AM

--°C/°C

Day time
Avg. Highest Time
5 PM

59AQI

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

52AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 PM to 5 PM (Avg. 59), while the lowest AQI was between 10 AM to 10 AM (Avg. 52).
Night time
Avg. Highest Time
8 PM - 9 PM

66AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
12 AM - 4 AM

61AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 9 PM (Avg. 66), while the lowest AQI was between 12 AM to 4 AM (Avg. 61).

2025 Days Vs Air Quality

Chengdong Station, Shanhu, Zhejiang, China

2025

17%

46

71%

195

13%

35

Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)

Good
46 Days
Moderate
195 Days
Poor
35 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 17%

Health Risk Level:

Extreme

In 2025, 17% of 276 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.

Annual Air Quality Insights

Chengdong Station, Shanhu, Zhejiang, China

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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
121AQI
2nd January 2025
123AQI
3rd January 2025
119AQI
4th January 2025
98AQI
5th January 2025
130AQI
6th January 2025
122AQI
7th January 2025
144AQI
8th January 2025
137AQI
9th January 2025
90AQI
10th January 2025
92AQI
11th January 2025
102AQI
12th January 2025
109AQI
13th January 2025
124AQI
14th January 2025
117AQI
15th January 2025
93AQI
16th January 2025
95AQI
17th January 2025
108AQI
18th January 2025
111AQI
19th January 2025
113AQI
20th January 2025
144AQI
21st January 2025
150AQI
22nd January 2025
122AQI
23rd January 2025
109AQI
24th January 2025
97AQI
25th January 2025
88AQI
26th January 2025
75AQI
27th January 2025
66AQI
28th January 2025
78AQI
29th January 2025
120AQI
30th January 2025
99AQI
31st January 2025
102AQI
1st February 2025
59AQI
2nd February 2025
86AQI
3rd February 2025
117AQI
4th February 2025
103AQI
5th February 2025
91AQI
6th February 2025
98AQI
7th February 2025
77AQI
8th February 2025
66AQI
9th February 2025
78AQI
10th February 2025
87AQI
11th February 2025
77AQI
12th February 2025
113AQI
13th February 2025
111AQI
14th February 2025
92AQI
15th February 2025
102AQI
16th February 2025
98AQI
17th February 2025
98AQI
18th February 2025
77AQI
19th February 2025
91AQI
20th February 2025
72AQI
21st February 2025
69AQI
22nd February 2025
75AQI
23rd February 2025
111AQI
24th February 2025
129AQI
25th February 2025
137AQI
26th February 2025
142AQI
27th February 2025
125AQI
28th February 2025
100AQI
1st March 2025
88AQI
2nd March 2025
83AQI
3rd March 2025
71AQI
4th March 2025
59AQI
5th March 2025
66AQI
6th March 2025
66AQI
7th March 2025
84AQI
8th March 2025
106AQI
9th March 2025
89AQI
10th March 2025
85AQI
11th March 2025
94AQI
12th March 2025
84AQI
13th March 2025
73AQI
14th March 2025
68AQI
15th March 2025
43AQI
16th March 2025
80AQI
17th March 2025
66AQI
18th March 2025
79AQI
19th March 2025
84AQI
20th March 2025
85AQI
21st March 2025
77AQI
22nd March 2025
83AQI
23rd March 2025
83AQI
24th March 2025
90AQI
25th March 2025
96AQI
26th March 2025
111AQI
27th March 2025
102AQI
28th March 2025
85AQI
29th March 2025
83AQI
30th March 2025
74AQI
31st March 2025
67AQI
1st April 2025
74AQI
2nd April 2025
76AQI
3rd April 2025
91AQI
4th April 2025
80AQI
5th April 2025
85AQI
6th April 2025
87AQI
7th April 2025
88AQI
8th April 2025
89AQI
9th April 2025
91AQI
10th April 2025
79AQI
11th April 2025
83AQI
12th April 2025
112AQI
13th April 2025
89AQI
14th April 2025
101AQI
15th April 2025
76AQI
16th April 2025
83AQI
17th April 2025
88AQI
18th April 2025
88AQI
19th April 2025
85AQI
20th April 2025
96AQI
21st April 2025
78AQI
22nd April 2025
72AQI
23rd April 2025
60AQI
24th April 2025
75AQI
25th April 2025
66AQI
26th April 2025
67AQI
27th April 2025
66AQI
28th April 2025
75AQI
29th April 2025
68AQI
30th April 2025
75AQI
1st May 2025
74AQI
2nd May 2025
74AQI
3rd May 2025
78AQI
4th May 2025
65AQI
5th May 2025
69AQI
6th May 2025
83AQI
7th May 2025
88AQI
8th May 2025
71AQI
9th May 2025
66AQI
10th May 2025
65AQI
11th May 2025
68AQI
12th May 2025
72AQI
13th May 2025
72AQI
14th May 2025
68AQI
15th May 2025
79AQI
16th May 2025
67AQI
17th May 2025
74AQI
18th May 2025
74AQI
19th May 2025
62AQI
20th May 2025
62AQI
21st May 2025
52AQI
22nd May 2025
63AQI
23rd May 2025
51AQI
24th May 2025
80AQI
25th May 2025
81AQI
26th May 2025
77AQI
27th May 2025
69AQI
28th May 2025
67AQI
29th May 2025
62AQI
30th May 2025
71AQI
31st May 2025
70AQI
1st June 2025
61AQI
2nd June 2025
54AQI
3rd June 2025
58AQI
4th June 2025
69AQI
5th June 2025
56AQI
6th June 2025
67AQI
7th June 2025
69AQI
8th June 2025
56AQI
9th June 2025
61AQI
10th June 2025
56AQI
11th June 2025
53AQI
12th June 2025
56AQI
13th June 2025
45AQI
14th June 2025
52AQI
15th June 2025
46AQI
16th June 2025
50AQI
17th June 2025
56AQI
18th June 2025
54AQI
19th June 2025
54AQI
20th June 2025
48AQI
21st June 2025
55AQI
22nd June 2025
60AQI
23rd June 2025
52AQI
24th June 2025
54AQI
25th June 2025
55AQI
26th June 2025
54AQI
27th June 2025
56AQI
28th June 2025
51AQI
29th June 2025
52AQI
30th June 2025
45AQI
1st July 2025
47AQI
2nd July 2025
50AQI
3rd July 2025
53AQI
4th July 2025
53AQI
5th July 2025
53AQI
6th July 2025
47AQI
7th July 2025
42AQI
8th July 2025
45AQI
9th July 2025
44AQI
10th July 2025
51AQI
11th July 2025
45AQI
12th July 2025
47AQI
13th July 2025
52AQI
14th July 2025
57AQI
15th July 2025
62AQI
16th July 2025
61AQI
17th July 2025
60AQI
18th July 2025
57AQI
19th July 2025
45AQI
20th July 2025
44AQI
21st July 2025
40AQI
22nd July 2025
41AQI
23rd July 2025
40AQI
24th July 2025
41AQI
25th July 2025
40AQI
26th July 2025
38AQI
27th July 2025
41AQI
28th July 2025
39AQI
29th July 2025
38AQI
30th July 2025
38AQI
31st July 2025
44AQI
1st August 2025
53AQI
2nd August 2025
59AQI
3rd August 2025
58AQI
4th August 2025
58AQI
5th August 2025
53AQI
6th August 2025
49AQI
7th August 2025
49AQI
8th August 2025
53AQI
9th August 2025
55AQI
10th August 2025
60AQI
11th August 2025
59AQI
12th August 2025
58AQI
13th August 2025
48AQI
14th August 2025
41AQI
15th August 2025
40AQI
16th August 2025
44AQI
17th August 2025
48AQI
18th August 2025
46AQI
19th August 2025
49AQI
20th August 2025
54AQI
21st August 2025
55AQI
22nd August 2025
52AQI
23rd August 2025
52AQI
24th August 2025
52AQI
25th August 2025
53AQI
26th August 2025
52AQI
27th August 2025
48AQI
28th August 2025
44AQI
29th August 2025
47AQI
30th August 2025
49AQI
31st August 2025
51AQI
1st September 2025
54AQI
2nd September 2025
53AQI
3rd September 2025
56AQI
4th September 2025
71AQI
5th September 2025
63AQI
6th September 2025
60AQI
7th September 2025
62AQI
8th September 2025
55AQI
9th September 2025
56AQI
10th September 2025
54AQI
11th September 2025
55AQI
12th September 2025
54AQI
13th September 2025
55AQI
14th September 2025
52AQI
15th September 2025
57AQI
16th September 2025
54AQI
17th September 2025
55AQI
18th September 2025
54AQI
19th September 2025
49AQI
20th September 2025
55AQI
21st September 2025
51AQI
22nd September 2025
48AQI
23rd September 2025
45AQI
24th September 2025
45AQI
25th September 2025
43AQI
26th September 2025
46AQI
27th September 2025
90AQI
28th September 2025
85AQI
29th September 2025
87AQI
30th September 2025
70AQI
1st October 2025
66AQI
2nd October 2025
59AQI
3rd October 2025
51AQI
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

110AQI

96AQI

81AQI

81AQI

70AQI

55AQI

47AQI

51AQI

58AQI

59AQI

No. of days

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

202572AQI

11
20
18
10
1
27
3
28
2
31
5
25
21
10
13
18
6
24
3
46
195
35

Highest AQI recorded in

January

110AQI

Lowest AQI recorded in

July

47AQI

202466AQI

15
1
1
1
1
5
7
1
29
11
20
3
28
13
16
12
17
2
6
23
1
10
21
51
168
25

Highest AQI recorded in

December

107AQI

Lowest AQI recorded in

May

48AQI

202393AQI

1
2
21
10
22
12

Highest AQI recorded in

November

101AQI

Lowest AQI recorded in

December

92AQI

202264AQI

4
5
1
1
6
12
3
7
21
3
4
21
4
8
22
1
20
9
1
9
14
2
6
20
2
1
1
65
127
15
1

Highest AQI recorded in

January

74AQI

Lowest AQI recorded in

June

50AQI

202171AQI

5
13
2
13
11
21
10
18
13
7
22
1
12
9
2
1
19
9
10
18
2
72
99
43
4

Highest AQI recorded in

December

114AQI

Lowest AQI recorded in

July

42AQI

202069AQI

6
7
16
5
4
13
1
18
12
13
17
16
13
6
23
1
3
28
5
18
7
8
17
6
71
155
31
6

Highest AQI recorded in

December

119AQI

Lowest AQI recorded in

August

47AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
93AQI
Least Polluted Year Recorded
2022(Avg.)
64AQI

Chengdong Station's annual 2025 AQI (72) shows an average percentage change of 0.6% (worsened AQI) compared to previous years: 2020 (69), 2021 (71), 2022 (64), 2023 (93), 2024 (66).