Sanmen Ring Supervision Station, Linhai, 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+
September Air Quality Analysis
Sanmen Ring Supervision Station, Linhai, Zhejiang, China
2021
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
17th Sep 2022
102AQILowest AQI recorded on
13th Sep 2021
15AQISame Day Analysis (29th September ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 4th highest AQI at 57 of Moderate air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Sanmen Ring Supervision Station, Linhai, Zhejiang, China
AQI
Day
Night
.
5 AM29th Sep 2025
6 PM
4 AM30th Sep 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
3PM29th Sep
92AQI
Avg. Lowest Time
4AM30th Sep
48AQI
In the last 24 hours,
Sanmen Ring Supervision Station's AQI reached its highest point of 92 at 3 PM during the Night, while the lowest point, 48, was recorded at 4 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Sanmen Ring Supervision Station, Linhai, Zhejiang, China
AugSep
31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 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
Day
Night
31st Aug 2025455 AMAQI
31st Aug 2025476 AMAQI
31st Aug 2025467 AMAQI
31st Aug 2025388 AMAQI
31st Aug 2025329 AMAQI
31st Aug 20254110 AMAQI
31st Aug 20254511 AMAQI
31st Aug 20254212 PMAQI
31st Aug 2025441 PMAQI
31st Aug 2025532 PMAQI
31st Aug 2025523 PMAQI
31st Aug 2025504 PMAQI
31st Aug 2025465 PMAQI
31st Aug 2025566 PMAQI
31st Aug 2025537 PMAQI
31st Aug 2025528 PMAQI
31st Aug 2025509 PMAQI
31st Aug 20255110 PMAQI
31st Aug 20255111 PMAQI
1st Sep 20255012 AMAQI
1st Sep 2025471 AMAQI
1st Sep 2025462 AMAQI
1st Sep 2025483 AMAQI
1st Sep 2025504 AMAQI
28°C24/37°C
1st Sep 2025485 AMAQI
1st Sep 2025506 AMAQI
1st Sep 2025517 AMAQI
1st Sep 2025558 AMAQI
1st Sep 2025589 AMAQI
1st Sep 20255710 AMAQI
1st Sep 20255711 AMAQI
1st Sep 20255512 PMAQI
1st Sep 2025611 PMAQI
1st Sep 2025602 PMAQI
1st Sep 2025583 PMAQI
1st Sep 2025594 PMAQI
1st Sep 2025555 PMAQI
1st Sep 2025566 PMAQI
1st Sep 2025567 PMAQI
1st Sep 2025568 PMAQI
1st Sep 2025549 PMAQI
1st Sep 20255410 PMAQI
1st Sep 20255511 PMAQI
2nd Sep 20255412 AMAQI
2nd Sep 2025491 AMAQI
2nd Sep 2025502 AMAQI
2nd Sep 2025523 AMAQI
2nd Sep 2025524 AMAQI
27°C23/36°C
2nd Sep 2025525 AMAQI
2nd Sep 2025536 AMAQI
2nd Sep 2025537 AMAQI
2nd Sep 2025528 AMAQI
2nd Sep 2025609 AMAQI
2nd Sep 20255410 AMAQI
2nd Sep 20254811 AMAQI
2nd Sep 20255412 PMAQI
2nd Sep 2025511 PMAQI
2nd Sep 2025502 PMAQI
2nd Sep 2025563 PMAQI
2nd Sep 2025504 PMAQI
2nd Sep 2025475 PMAQI
2nd Sep 2025466 PMAQI
2nd Sep 2025527 PMAQI
2nd Sep 2025488 PMAQI
2nd Sep 2025459 PMAQI
2nd Sep 20254410 PMAQI
2nd Sep 20255011 PMAQI
3rd Sep 20254612 AMAQI
3rd Sep 2025501 AMAQI
3rd Sep 2025522 AMAQI
3rd Sep 2025533 AMAQI
3rd Sep 2025534 AMAQI
27°C22/35°C
3rd Sep 2025525 AMAQI
3rd Sep 2025536 AMAQI
3rd Sep 2025537 AMAQI
3rd Sep 2025508 AMAQI
3rd Sep 2025549 AMAQI
3rd Sep 20254710 AMAQI
3rd Sep 20255311 AMAQI
3rd Sep 20255612 PMAQI
3rd Sep 2025561 PMAQI
3rd Sep 2025572 PMAQI
3rd Sep 2025543 PMAQI
3rd Sep 2025574 PMAQI
3rd Sep 2025555 PMAQI
3rd Sep 2025556 PMAQI
3rd Sep 2025547 PMAQI
3rd Sep 2025538 PMAQI
3rd Sep 2025539 PMAQI
3rd Sep 20255010 PMAQI
3rd Sep 20254711 PMAQI
4th Sep 20255112 AMAQI
4th Sep 2025531 AMAQI
4th Sep 2025522 AMAQI
4th Sep 2025543 AMAQI
4th Sep 2025544 AMAQI
28°C23/35°C
4th Sep 2025545 AMAQI
4th Sep 2025546 AMAQI
4th Sep 2025547 AMAQI
4th Sep 2025438 AMAQI
4th Sep 2025529 AMAQI
4th Sep 20254510 AMAQI
4th Sep 20255411 AMAQI
4th Sep 20256312 PMAQI
4th Sep 2025661 PMAQI
4th Sep 2025662 PMAQI
4th Sep 2025643 PMAQI
4th Sep 2025704 PMAQI
4th Sep 2025575 PMAQI
4th Sep 2025556 PMAQI
4th Sep 2025557 PMAQI
4th Sep 2025548 PMAQI
4th Sep 2025519 PMAQI
4th Sep 20254810 PMAQI
4th Sep 20254711 PMAQI
5th Sep 20255412 AMAQI
5th Sep 2025541 AMAQI
5th Sep 2025542 AMAQI
5th Sep 2025543 AMAQI
5th Sep 2025554 AMAQI
28°C23/36°C
5th Sep 2025565 AMAQI
5th Sep 2025556 AMAQI
5th Sep 2025557 AMAQI
5th Sep 2025608 AMAQI
5th Sep 2025619 AMAQI
5th Sep 20255610 AMAQI
5th Sep 20256311 AMAQI
5th Sep 20256112 PMAQI
5th Sep 2025621 PMAQI
5th Sep 2025602 PMAQI
5th Sep 2025583 PMAQI
5th Sep 2025594 PMAQI
5th Sep 2025585 PMAQI
5th Sep 2025506 PMAQI
5th Sep 2025527 PMAQI
5th Sep 2025528 PMAQI
5th Sep 2025489 PMAQI
5th Sep 20254710 PMAQI
5th Sep 20255311 PMAQI
6th Sep 20254712 AMAQI
6th Sep 2025561 AMAQI
6th Sep 2025602 AMAQI
6th Sep 2025573 AMAQI
6th Sep 2025564 AMAQI
28°C23/35°C
6th Sep 2025565 AMAQI
6th Sep 2025576 AMAQI
6th Sep 2025567 AMAQI
6th Sep 2025328 AMAQI
6th Sep 2025389 AMAQI
6th Sep 20254310 AMAQI
6th Sep 20254411 AMAQI
6th Sep 20255612 PMAQI
6th Sep 2025561 PMAQI
6th Sep 2025582 PMAQI
6th Sep 2025573 PMAQI
6th Sep 2025624 PMAQI
6th Sep 2025605 PMAQI
6th Sep 2025606 PMAQI
6th Sep 2025597 PMAQI
6th Sep 2025568 PMAQI
6th Sep 2025609 PMAQI
6th Sep 20255810 PMAQI
6th Sep 20255611 PMAQI
7th Sep 20255912 AMAQI
7th Sep 2025561 AMAQI
7th Sep 2025562 AMAQI
7th Sep 2025553 AMAQI
7th Sep 2025564 AMAQI
28°C22/36°C
7th Sep 2025555 AMAQI
7th Sep 2025566 AMAQI
7th Sep 2025577 AMAQI
7th Sep 2025608 AMAQI
7th Sep 2025549 AMAQI
7th Sep 20254910 AMAQI
7th Sep 20255911 AMAQI
7th Sep 20256012 PMAQI
7th Sep 2025561 PMAQI
7th Sep 2025572 PMAQI
7th Sep 2025553 PMAQI
7th Sep 2025664 PMAQI
7th Sep 2025705 PMAQI
7th Sep 2025576 PMAQI
7th Sep 2025607 PMAQI
7th Sep 2025578 PMAQI
7th Sep 2025599 PMAQI
7th Sep 20255610 PMAQI
7th Sep 20255411 PMAQI
8th Sep 20255612 AMAQI
8th Sep 2025561 AMAQI
8th Sep 2025572 AMAQI
8th Sep 2025573 AMAQI
8th Sep 2025574 AMAQI
29°C24/37°C
8th Sep 2025565 AMAQI
8th Sep 2025566 AMAQI
8th Sep 2025567 AMAQI
8th Sep 2025388 AMAQI
8th Sep 2025429 AMAQI
8th Sep 20253910 AMAQI
8th Sep 20254411 AMAQI
8th Sep 20255412 PMAQI
8th Sep 2025491 PMAQI
8th Sep 2025462 PMAQI
8th Sep 2025493 PMAQI
8th Sep 2025554 PMAQI
8th Sep 2025575 PMAQI
8th Sep 2025566 PMAQI
8th Sep 2025567 PMAQI
8th Sep 2025588 PMAQI
8th Sep 2025549 PMAQI
8th Sep 20255310 PMAQI
8th Sep 20255611 PMAQI
9th Sep 20255612 AMAQI
9th Sep 2025601 AMAQI
9th Sep 2025582 AMAQI
9th Sep 2025583 AMAQI
9th Sep 2025584 AMAQI
29°C24/37°C
9th Sep 2025575 AMAQI
9th Sep 2025566 AMAQI
9th Sep 2025567 AMAQI
9th Sep 2025478 AMAQI
9th Sep 2025559 AMAQI
9th Sep 20256010 AMAQI
9th Sep 20256211 AMAQI
9th Sep 20257312 PMAQI
9th Sep 2025671 PMAQI
9th Sep 2025652 PMAQI
9th Sep 2025563 PMAQI
9th Sep 2025554 PMAQI
9th Sep 2025445 PMAQI
9th Sep 2025426 PMAQI
9th Sep 2025427 PMAQI
9th Sep 2025528 PMAQI
9th Sep 2025509 PMAQI
9th Sep 20255210 PMAQI
9th Sep 20255011 PMAQI
10th Sep 20255512 AMAQI
10th Sep 2025571 AMAQI
10th Sep 2025622 AMAQI
10th Sep 2025603 AMAQI
10th Sep 2025604 AMAQI
27°C24/34°C
10th Sep 2025595 AMAQI
10th Sep 2025606 AMAQI
10th Sep 2025587 AMAQI
10th Sep 2025358 AMAQI
10th Sep 2025349 AMAQI
10th Sep 20254610 AMAQI
10th Sep 20255011 AMAQI
10th Sep 20255612 PMAQI
10th Sep 2025501 PMAQI
10th Sep 2025532 PMAQI
10th Sep 2025533 PMAQI
10th Sep 2025554 PMAQI
10th Sep 2025535 PMAQI
10th Sep 2025546 PMAQI
10th Sep 2025557 PMAQI
10th Sep 2025568 PMAQI
10th Sep 2025569 PMAQI
10th Sep 20255510 PMAQI
10th Sep 20255511 PMAQI
11th Sep 20255612 AMAQI
11th Sep 2025581 AMAQI
11th Sep 2025572 AMAQI
11th Sep 2025573 AMAQI
11th Sep 2025574 AMAQI
26°C24/29°C
11th Sep 2025575 AMAQI
11th Sep 2025576 AMAQI
11th Sep 2025577 AMAQI
11th Sep 2025548 AMAQI
11th Sep 2025549 AMAQI
11th Sep 20255110 AMAQI
11th Sep 20255711 AMAQI
11th Sep 20256012 PMAQI
11th Sep 2025581 PMAQI
11th Sep 2025572 PMAQI
11th Sep 2025563 PMAQI
11th Sep 2025524 PMAQI
11th Sep 2025585 PMAQI
11th Sep 2025546 PMAQI
11th Sep 2025567 PMAQI
11th Sep 2025578 PMAQI
11th Sep 2025589 PMAQI
11th Sep 20255410 PMAQI
11th Sep 20255711 PMAQI
12th Sep 20255712 AMAQI
12th Sep 2025571 AMAQI
12th Sep 2025592 AMAQI
12th Sep 2025573 AMAQI
12th Sep 2025574 AMAQI
26°C22/30°C
12th Sep 2025585 AMAQI
12th Sep 2025586 AMAQI
12th Sep 2025587 AMAQI
12th Sep 2025628 AMAQI
12th Sep 2025549 AMAQI
12th Sep 20254910 AMAQI
12th Sep 20255211 AMAQI
12th Sep 20255612 PMAQI
12th Sep 2025551 PMAQI
12th Sep 2025542 PMAQI
12th Sep 2025543 PMAQI
12th Sep 2025564 PMAQI
12th Sep 2025565 PMAQI
12th Sep 2025536 PMAQI
12th Sep 2025577 PMAQI
12th Sep 2025608 PMAQI
12th Sep 2025609 PMAQI
12th Sep 20255510 PMAQI
12th Sep 20255311 PMAQI
13th Sep 20255612 AMAQI
13th Sep 2025571 AMAQI
13th Sep 2025572 AMAQI
13th Sep 2025583 AMAQI
13th Sep 2025564 AMAQI
27°C22/35°C
13th Sep 2025565 AMAQI
13th Sep 2025566 AMAQI
13th Sep 2025567 AMAQI
13th Sep 2025618 AMAQI
13th Sep 2025609 AMAQI
13th Sep 20255810 AMAQI
13th Sep 20257011 AMAQI
13th Sep 20257812 PMAQI
13th Sep 2025801 PMAQI
13th Sep 2025762 PMAQI
13th Sep 2025683 PMAQI
13th Sep 2025674 PMAQI
13th Sep 2025725 PMAQI
13th Sep 2025706 PMAQI
13th Sep 2025607 PMAQI
13th Sep 2025578 PMAQI
13th Sep 2025599 PMAQI
13th Sep 20255410 PMAQI
13th Sep 20255111 PMAQI
14th Sep 20255412 AMAQI
14th Sep 2025571 AMAQI
14th Sep 2025572 AMAQI
14th Sep 2025583 AMAQI
14th Sep 2025594 AMAQI
28°C24/35°C
14th Sep 2025595 AMAQI
14th Sep 2025606 AMAQI
14th Sep 2025597 AMAQI
14th Sep 2025548 AMAQI
14th Sep 2025649 AMAQI
14th Sep 20255510 AMAQI
14th Sep 20255511 AMAQI
14th Sep 20255212 PMAQI
14th Sep 2025581 PMAQI
14th Sep 2025522 PMAQI
14th Sep 2025573 PMAQI
14th Sep 2025624 PMAQI
14th Sep 2025575 PMAQI
14th Sep 2025616 PMAQI
14th Sep 2025587 PMAQI
14th Sep 2025588 PMAQI
14th Sep 2025549 PMAQI
14th Sep 20255410 PMAQI
14th Sep 20255411 PMAQI
15th Sep 20255512 AMAQI
15th Sep 2025581 AMAQI
15th Sep 2025582 AMAQI
15th Sep 2025573 AMAQI
15th Sep 2025574 AMAQI
27°C23/35°C
15th Sep 2025575 AMAQI
15th Sep 2025576 AMAQI
15th Sep 2025577 AMAQI
15th Sep 2025468 AMAQI
15th Sep 2025589 AMAQI
15th Sep 20256210 AMAQI
15th Sep 20255911 AMAQI
15th Sep 20256112 PMAQI
15th Sep 2025621 PMAQI
15th Sep 2025582 PMAQI
15th Sep 2025563 PMAQI
15th Sep 2025524 PMAQI
15th Sep 2025505 PMAQI
15th Sep 2025576 PMAQI
15th Sep 2025547 PMAQI
15th Sep 2025558 PMAQI
15th Sep 2025549 PMAQI
15th Sep 20255710 PMAQI
15th Sep 20255411 PMAQI
16th Sep 20255112 AMAQI
16th Sep 2025561 AMAQI
16th Sep 2025562 AMAQI
16th Sep 2025563 AMAQI
16th Sep 2025574 AMAQI
27°C23/34°C
16th Sep 2025575 AMAQI
16th Sep 2025576 AMAQI
16th Sep 2025577 AMAQI
16th Sep 2025428 AMAQI
16th Sep 2025379 AMAQI
16th Sep 20252810 AMAQI
16th Sep 20253011 AMAQI
16th Sep 20253612 PMAQI
16th Sep 2025521 PMAQI
16th Sep 2025502 PMAQI
16th Sep 2025453 PMAQI
16th Sep 2025524 PMAQI
16th Sep 2025585 PMAQI
16th Sep 2025586 PMAQI
16th Sep 2025567 PMAQI
16th Sep 2025568 PMAQI
16th Sep 2025549 PMAQI
16th Sep 20255410 PMAQI
16th Sep 20255011 PMAQI
17th Sep 20255012 AMAQI
17th Sep 2025541 AMAQI
17th Sep 2025562 AMAQI
17th Sep 2025563 AMAQI
17th Sep 2025544 AMAQI
27°C22/35°C
17th Sep 2025545 AMAQI
17th Sep 2025556 AMAQI
17th Sep 2025547 AMAQI
17th Sep 2025368 AMAQI
17th Sep 2025279 AMAQI
17th Sep 20253510 AMAQI
17th Sep 20254311 AMAQI
17th Sep 20255512 PMAQI
17th Sep 2025551 PMAQI
17th Sep 2025572 PMAQI
17th Sep 2025603 PMAQI
17th Sep 2025554 PMAQI
17th Sep 2025565 PMAQI
17th Sep 2025566 PMAQI
17th Sep 2025567 PMAQI
17th Sep 2025558 PMAQI
17th Sep 2025559 PMAQI
17th Sep 20254710 PMAQI
17th Sep 20254811 PMAQI
18th Sep 20254512 AMAQI
18th Sep 2025551 AMAQI
18th Sep 2025542 AMAQI
18th Sep 2025543 AMAQI
18th Sep 2025544 AMAQI
28°C22/36°C
18th Sep 2025545 AMAQI
18th Sep 2025536 AMAQI
18th Sep 2025547 AMAQI
18th Sep 2025338 AMAQI
18th Sep 2025349 AMAQI
18th Sep 20253710 AMAQI
18th Sep 20254311 AMAQI
18th Sep 20255012 PMAQI
18th Sep 2025521 PMAQI
18th Sep 2025542 PMAQI
18th Sep 2025533 PMAQI
18th Sep 2025544 PMAQI
18th Sep 2025555 PMAQI
18th Sep 2025606 PMAQI
18th Sep 2025587 PMAQI
18th Sep 2025588 PMAQI
18th Sep 2025569 PMAQI
18th Sep 20255410 PMAQI
18th Sep 20255411 PMAQI
19th Sep 20255212 AMAQI
19th Sep 2025511 AMAQI
19th Sep 2025532 AMAQI
19th Sep 2025543 AMAQI
19th Sep 2025564 AMAQI
26°C24/29°C
19th Sep 2025565 AMAQI
19th Sep 2025576 AMAQI
19th Sep 2025577 AMAQI
19th Sep 2025488 AMAQI
19th Sep 2025449 AMAQI
19th Sep 20254610 AMAQI
19th Sep 20254411 AMAQI
19th Sep 20252712 PMAQI
19th Sep 2025231 PMAQI
19th Sep 2025262 PMAQI
19th Sep 2025333 PMAQI
19th Sep 2025354 PMAQI
19th Sep 2025375 PMAQI
19th Sep 2025326 PMAQI
19th Sep 2025427 PMAQI
19th Sep 2025498 PMAQI
19th Sep 2025509 PMAQI
19th Sep 20254910 PMAQI
19th Sep 20255011 PMAQI
20th Sep 20254612 AMAQI
20th Sep 2025561 AMAQI
20th Sep 2025552 AMAQI
20th Sep 2025553 AMAQI
20th Sep 2025544 AMAQI
26°C22/31°C
20th Sep 2025545 AMAQI
20th Sep 2025546 AMAQI
20th Sep 2025547 AMAQI
20th Sep 2025468 AMAQI
20th Sep 2025559 AMAQI
20th Sep 20255710 AMAQI
20th Sep 20255211 AMAQI
20th Sep 20255012 PMAQI
20th Sep 2025521 PMAQI
20th Sep 2025462 PMAQI
20th Sep 2025543 PMAQI
20th Sep 2025554 PMAQI
20th Sep 2025655 PMAQI
20th Sep 2025746 PMAQI
20th Sep 2025727 PMAQI
20th Sep 2025628 PMAQI
20th Sep 2025599 PMAQI
20th Sep 20255810 PMAQI
20th Sep 20255611 PMAQI
21st Sep 20255212 AMAQI
21st Sep 2025551 AMAQI
21st Sep 2025542 AMAQI
21st Sep 2025543 AMAQI
21st Sep 2025544 AMAQI
23°C23/24°C
21st Sep 2025545 AMAQI
21st Sep 2025546 AMAQI
21st Sep 2025547 AMAQI
21st Sep 2025398 AMAQI
21st Sep 2025359 AMAQI
21st Sep 20254110 AMAQI
21st Sep 20254411 AMAQI
21st Sep 20254612 PMAQI
21st Sep 2025421 PMAQI
21st Sep 2025422 PMAQI
21st Sep 2025443 PMAQI
21st Sep 2025504 PMAQI
21st Sep 2025525 PMAQI
21st Sep 2025546 PMAQI
21st Sep 2025567 PMAQI
21st Sep 2025558 PMAQI
21st Sep 2025529 PMAQI
21st Sep 20255110 PMAQI
21st Sep 20254611 PMAQI
22nd Sep 20254612 AMAQI
22nd Sep 2025541 AMAQI
22nd Sep 2025542 AMAQI
22nd Sep 2025533 AMAQI
22nd Sep 2025534 AMAQI
22°C19/24°C
22nd Sep 2025535 AMAQI
22nd Sep 2025526 AMAQI
22nd Sep 2025527 AMAQI
22nd Sep 2025398 AMAQI
22nd Sep 2025329 AMAQI
22nd Sep 20253110 AMAQI
22nd Sep 20253011 AMAQI
22nd Sep 20253412 PMAQI
22nd Sep 2025341 PMAQI
22nd Sep 2025372 PMAQI
22nd Sep 2025333 PMAQI
22nd Sep 2025364 PMAQI
22nd Sep 2025395 PMAQI
22nd Sep 2025486 PMAQI
22nd Sep 2025537 PMAQI
22nd Sep 2025568 PMAQI
22nd Sep 2025579 PMAQI
22nd Sep 20255210 PMAQI
22nd Sep 20255011 PMAQI
23rd Sep 20254812 AMAQI
23rd Sep 2025501 AMAQI
23rd Sep 2025522 AMAQI
23rd Sep 2025503 AMAQI
23rd Sep 2025494 AMAQI
24°C20/28°C
23rd Sep 2025485 AMAQI
23rd Sep 2025486 AMAQI
23rd Sep 2025477 AMAQI
23rd Sep 2025288 AMAQI
23rd Sep 2025269 AMAQI
23rd Sep 20252410 AMAQI
23rd Sep 20252211 AMAQI
23rd Sep 20254112 PMAQI
23rd Sep 2025381 PMAQI
23rd Sep 2025312 PMAQI
23rd Sep 2025353 PMAQI
23rd Sep 2025364 PMAQI
23rd Sep 2025375 PMAQI
23rd Sep 2025386 PMAQI
23rd Sep 2025477 PMAQI
23rd Sep 2025488 PMAQI
23rd Sep 2025419 PMAQI
23rd Sep 20253810 PMAQI
23rd Sep 20253511 PMAQI
24th Sep 20253812 AMAQI
24th Sep 2025501 AMAQI
24th Sep 2025512 AMAQI
24th Sep 2025483 AMAQI
24th Sep 2025464 AMAQI
25°C22/30°C
24th Sep 2025485 AMAQI
24th Sep 2025476 AMAQI
24th Sep 2025477 AMAQI
24th Sep 2025308 AMAQI
24th Sep 2025309 AMAQI
24th Sep 20253610 AMAQI
24th Sep 20253411 AMAQI
24th Sep 20253712 PMAQI
24th Sep 2025351 PMAQI
24th Sep 2025282 PMAQI
24th Sep 2025323 PMAQI
24th Sep 2025304 PMAQI
24th Sep 2025265 PMAQI
24th Sep 2025366 PMAQI
24th Sep 2025407 PMAQI
24th Sep 2025468 PMAQI
24th Sep 2025469 PMAQI
24th Sep 20254610 PMAQI
24th Sep 20254711 PMAQI
25th Sep 20254812 AMAQI
25th Sep 2025501 AMAQI
25th Sep 2025482 AMAQI
25th Sep 2025473 AMAQI
25th Sep 2025454 AMAQI
25°C23/30°C
25th Sep 2025465 AMAQI
25th Sep 2025456 AMAQI
25th Sep 2025467 AMAQI
25th Sep 2025388 AMAQI
25th Sep 2025409 AMAQI
25th Sep 20254010 AMAQI
25th Sep 20253011 AMAQI
25th Sep 20252912 PMAQI
25th Sep 2025291 PMAQI
25th Sep 2025272 PMAQI
25th Sep 2025263 PMAQI
25th Sep 2025274 PMAQI
25th Sep 2025365 PMAQI
25th Sep 2025416 PMAQI
25th Sep 2025387 PMAQI
25th Sep 2025338 PMAQI
25th Sep 2025269 PMAQI
25th Sep 20252210 PMAQI
25th Sep 20252211 PMAQI
26th Sep 20252212 AMAQI
26th Sep 2025241 AMAQI
26th Sep 2025302 AMAQI
26th Sep 2025383 AMAQI
26th Sep 2025394 AMAQI
26°C22/32°C
26th Sep 2025325 AMAQI
26th Sep 2025306 AMAQI
26th Sep 2025377 AMAQI
26th Sep 2025428 AMAQI
26th Sep 2025449 AMAQI
26th Sep 20253810 AMAQI
26th Sep 20253611 AMAQI
26th Sep 20253912 PMAQI
26th Sep 2025421 PMAQI
26th Sep 2025392 PMAQI
26th Sep 2025263 PMAQI
26th Sep 2025244 PMAQI
26th Sep 2025255 PMAQI
26th Sep 2025266 PMAQI
26th Sep 2025287 PMAQI
26th Sep 2025308 PMAQI
26th Sep 2025279 PMAQI
26th Sep 20252010 PMAQI
26th Sep 20251911 PMAQI
27th Sep 20252212 AMAQI
27th Sep 2025361 AMAQI
27th Sep 2025422 AMAQI
27th Sep 2025393 AMAQI
27th Sep 2025374 AMAQI
26°C22/33°C
27th Sep 2025335 AMAQI
27th Sep 2025366 AMAQI
27th Sep 2025487 AMAQI
27th Sep 2025548 AMAQI
27th Sep 2025509 AMAQI
27th Sep 20254210 AMAQI
27th Sep 20254011 AMAQI
27th Sep 20254412 PMAQI
27th Sep 2025461 PMAQI
27th Sep 2025472 PMAQI
27th Sep 2025403 PMAQI
27th Sep 2025444 PMAQI
27th Sep 2025425 PMAQI
27th Sep 2025406 PMAQI
27th Sep 2025467 PMAQI
27th Sep 2025498 PMAQI
27th Sep 2025489 PMAQI
27th Sep 20254610 PMAQI
27th Sep 20255111 PMAQI
28th Sep 20255212 AMAQI
28th Sep 2025521 AMAQI
28th Sep 2025502 AMAQI
28th Sep 2025483 AMAQI
28th Sep 2025434 AMAQI
27°C23/34°C
28th Sep 2025435 AMAQI
28th Sep 2025446 AMAQI
28th Sep 2025497 AMAQI
28th Sep 2025578 AMAQI
28th Sep 2025569 AMAQI
28th Sep 20254810 AMAQI
28th Sep 20254411 AMAQI
28th Sep 20254412 PMAQI
28th Sep 2025351 PMAQI
28th Sep 2025192 PMAQI
28th Sep 2025303 PMAQI
28th Sep 2025354 PMAQI
28th Sep 2025425 PMAQI
28th Sep 2025526 PMAQI
28th Sep 2025597 PMAQI
28th Sep 2025558 PMAQI
28th Sep 2025449 PMAQI
28th Sep 20254610 PMAQI
28th Sep 20255211 PMAQI
29th Sep 20255512 AMAQI
29th Sep 2025551 AMAQI
29th Sep 2025532 AMAQI
29th Sep 2025553 AMAQI
29th Sep 2025674 AMAQI
27°C23/34°C
29th Sep 2025545 AMAQI
29th Sep 2025566 AMAQI
29th Sep 2025617 AMAQI
29th Sep 2025648 AMAQI
29th Sep 2025649 AMAQI
29th Sep 20255910 AMAQI
29th Sep 20256511 AMAQI
29th Sep 20257012 PMAQI
29th Sep 2025831 PMAQI
29th Sep 2025912 PMAQI
29th Sep 2025923 PMAQI
29th Sep 2025884 PMAQI
29th Sep 2025845 PMAQI
29th Sep 2025826 PMAQI
29th Sep 2025797 PMAQI
29th Sep 2025728 PMAQI
29th Sep 2025709 PMAQI
29th Sep 20256510 PMAQI
29th Sep 20255711 PMAQI
30th Sep 20254912 AMAQI
30th Sep 2025531 AMAQI
30th Sep 2025522 AMAQI
30th Sep 2025513 AMAQI
30th Sep 2025484 AMAQI
--°C/°C
30th Sep 2025475 AMAQI
5 AM11 AM
6 PM
11 PM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 AM
52AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
8 AM - 10 AM
46AQI
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. 52), while the lowest AQI was between 8 AM to 10 AM (Avg. 46).
Night time
Avg. Highest Time
1 AM - 8 PM
53AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
12 AM
49AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 1 AM to 8 PM (Avg. 53), while the lowest AQI was between 12 AM to 12 AM (Avg. 49).
2025 Days Vs Air Quality
Sanmen Ring Supervision Station, Linhai, Zhejiang, China
2025
21%
58
65%
177
13%
36
0.3%
1
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Good
58 DaysModerate
177 DaysPoor
36 DaysUnhealthy
1 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 21%
Health Risk Level:
Very high
In 2025, 21% of 272 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Sanmen Ring Supervision Station, Linhai, 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
102AQI
102AQI
2nd January 2025
96AQI
96AQI
3rd January 2025
102AQI
102AQI
4th January 2025
81AQI
81AQI
5th January 2025
115AQI
115AQI
6th January 2025
113AQI
113AQI
7th January 2025
134AQI
134AQI
8th January 2025
140AQI
140AQI
9th January 2025
98AQI
98AQI
10th January 2025
94AQI
94AQI
11th January 2025
104AQI
104AQI
12th January 2025
113AQI
113AQI
13th January 2025
131AQI
131AQI
14th January 2025
116AQI
116AQI
15th January 2025
103AQI
103AQI
16th January 2025
92AQI
92AQI
17th January 2025
112AQI
112AQI
18th January 2025
109AQI
109AQI
19th January 2025
115AQI
115AQI
20th January 2025
140AQI
140AQI
21st January 2025
153AQI
153AQI
22nd January 2025
118AQI
118AQI
23rd January 2025
98AQI
98AQI
24th January 2025
82AQI
82AQI
25th January 2025
81AQI
81AQI
26th January 2025
72AQI
72AQI
27th January 2025
65AQI
65AQI
28th January 2025
78AQI
78AQI
29th January 2025
117AQI
117AQI
30th January 2025
92AQI
92AQI
31st January 2025
99AQI
99AQI
1st February 2025
52AQI
52AQI
2nd February 2025
81AQI
81AQI
3rd February 2025
119AQI
119AQI
4th February 2025
109AQI
109AQI
5th February 2025
98AQI
98AQI
6th February 2025
104AQI
104AQI
7th February 2025
82AQI
82AQI
8th February 2025
68AQI
68AQI
9th February 2025
80AQI
80AQI
10th February 2025
87AQI
87AQI
11th February 2025
78AQI
78AQI
12th February 2025
110AQI
110AQI
13th February 2025
104AQI
104AQI
14th February 2025
80AQI
80AQI
15th February 2025
96AQI
96AQI
16th February 2025
114AQI
114AQI
17th February 2025
98AQI
98AQI
18th February 2025
78AQI
78AQI
19th February 2025
94AQI
94AQI
20th February 2025
74AQI
74AQI
21st February 2025
68AQI
68AQI
22nd February 2025
76AQI
76AQI
23rd February 2025
102AQI
102AQI
24th February 2025
130AQI
130AQI
25th February 2025
129AQI
129AQI
26th February 2025
149AQI
149AQI
27th February 2025
141AQI
141AQI
28th February 2025
108AQI
108AQI
1st March 2025
92AQI
92AQI
2nd March 2025
88AQI
88AQI
3rd March 2025
77AQI
77AQI
4th March 2025
53AQI
53AQI
5th March 2025
66AQI
66AQI
6th March 2025
62AQI
62AQI
7th March 2025
77AQI
77AQI
8th March 2025
102AQI
102AQI
9th March 2025
79AQI
79AQI
10th March 2025
82AQI
82AQI
11th March 2025
97AQI
97AQI
12th March 2025
78AQI
78AQI
13th March 2025
68AQI
68AQI
14th March 2025
68AQI
68AQI
15th March 2025
37AQI
37AQI
16th March 2025
79AQI
79AQI
17th March 2025
70AQI
70AQI
18th March 2025
80AQI
80AQI
19th March 2025
82AQI
82AQI
20th March 2025
94AQI
94AQI
21st March 2025
78AQI
78AQI
22nd March 2025
83AQI
83AQI
23rd March 2025
80AQI
80AQI
24th March 2025
99AQI
99AQI
25th March 2025
111AQI
111AQI
26th March 2025
115AQI
115AQI
27th March 2025
110AQI
110AQI
28th March 2025
85AQI
85AQI
29th March 2025
85AQI
85AQI
30th March 2025
69AQI
69AQI
31st March 2025
63AQI
63AQI
1st April 2025
70AQI
70AQI
2nd April 2025
77AQI
77AQI
3rd April 2025
94AQI
94AQI
4th April 2025
77AQI
77AQI
5th April 2025
84AQI
84AQI
6th April 2025
88AQI
88AQI
7th April 2025
87AQI
87AQI
8th April 2025
90AQI
90AQI
9th April 2025
90AQI
90AQI
10th April 2025
76AQI
76AQI
11th April 2025
81AQI
81AQI
12th April 2025
107AQI
107AQI
13th April 2025
90AQI
90AQI
14th April 2025
102AQI
102AQI
15th April 2025
78AQI
78AQI
16th April 2025
85AQI
85AQI
17th April 2025
92AQI
92AQI
18th April 2025
91AQI
91AQI
19th April 2025
72AQI
72AQI
20th April 2025
104AQI
104AQI
21st April 2025
75AQI
75AQI
22nd April 2025
77AQI
77AQI
23rd April 2025
55AQI
55AQI
24th April 2025
78AQI
78AQI
25th April 2025
63AQI
63AQI
26th April 2025
58AQI
58AQI
27th April 2025
71AQI
71AQI
28th April 2025
68AQI
68AQI
29th April 2025
66AQI
66AQI
30th April 2025
64AQI
64AQI
1st May 2025
73AQI
73AQI
2nd May 2025
69AQI
69AQI
3rd May 2025
80AQI
80AQI
4th May 2025
55AQI
55AQI
5th May 2025
73AQI
73AQI
6th May 2025
82AQI
82AQI
7th May 2025
84AQI
84AQI
8th May 2025
71AQI
71AQI
9th May 2025
69AQI
69AQI
10th May 2025
64AQI
64AQI
11th May 2025
66AQI
66AQI
12th May 2025
71AQI
71AQI
13th May 2025
69AQI
69AQI
14th May 2025
64AQI
64AQI
15th May 2025
62AQI
62AQI
16th May 2025
63AQI
63AQI
17th May 2025
73AQI
73AQI
18th May 2025
70AQI
70AQI
19th May 2025
62AQI
62AQI
20th May 2025
60AQI
60AQI
21st May 2025
48AQI
48AQI
22nd May 2025
62AQI
62AQI
23rd May 2025
50AQI
50AQI
24th May 2025
70AQI
70AQI
25th May 2025
84AQI
84AQI
26th May 2025
68AQI
68AQI
27th May 2025
67AQI
67AQI
28th May 2025
61AQI
61AQI
29th May 2025
61AQI
61AQI
30th May 2025
72AQI
72AQI
31st May 2025
73AQI
73AQI
1st June 2025
64AQI
64AQI
2nd June 2025
62AQI
62AQI
3rd June 2025
60AQI
60AQI
4th June 2025
70AQI
70AQI
5th June 2025
56AQI
56AQI
6th June 2025
67AQI
67AQI
7th June 2025
65AQI
65AQI
8th June 2025
68AQI
68AQI
9th June 2025
60AQI
60AQI
10th June 2025
59AQI
59AQI
11th June 2025
38AQI
38AQI
12th June 2025
49AQI
49AQI
13th June 2025
38AQI
38AQI
14th June 2025
49AQI
49AQI
15th June 2025
40AQI
40AQI
16th June 2025
47AQI
47AQI
17th June 2025
56AQI
56AQI
18th June 2025
56AQI
56AQI
19th June 2025
53AQI
53AQI
20th June 2025
49AQI
49AQI
21st June 2025
60AQI
60AQI
22nd June 2025
61AQI
61AQI
23rd June 2025
56AQI
56AQI
24th June 2025
58AQI
58AQI
25th June 2025
58AQI
58AQI
26th June 2025
60AQI
60AQI
27th June 2025
59AQI
59AQI
28th June 2025
55AQI
55AQI
29th June 2025
48AQI
48AQI
30th June 2025
43AQI
43AQI
1st July 2025
46AQI
46AQI
2nd July 2025
53AQI
53AQI
3rd July 2025
52AQI
52AQI
4th July 2025
53AQI
53AQI
5th July 2025
48AQI
48AQI
6th July 2025
43AQI
43AQI
7th July 2025
38AQI
38AQI
8th July 2025
42AQI
42AQI
9th July 2025
45AQI
45AQI
10th July 2025
52AQI
52AQI
11th July 2025
44AQI
44AQI
12th July 2025
47AQI
47AQI
13th July 2025
53AQI
53AQI
14th July 2025
59AQI
59AQI
15th July 2025
63AQI
63AQI
16th July 2025
62AQI
62AQI
17th July 2025
62AQI
62AQI
18th July 2025
56AQI
56AQI
19th July 2025
47AQI
47AQI
20th July 2025
46AQI
46AQI
21st July 2025
41AQI
41AQI
22nd July 2025
43AQI
43AQI
23rd July 2025
39AQI
39AQI
24th July 2025
40AQI
40AQI
25th July 2025
39AQI
39AQI
26th July 2025
41AQI
41AQI
27th July 2025
41AQI
41AQI
28th July 2025
38AQI
38AQI
29th July 2025
38AQI
38AQI
30th July 2025
38AQI
38AQI
31st July 2025
50AQI
50AQI
1st August 2025
54AQI
54AQI
2nd August 2025
58AQI
58AQI
3rd August 2025
60AQI
60AQI
4th August 2025
60AQI
60AQI
5th August 2025
50AQI
50AQI
6th August 2025
54AQI
54AQI
7th August 2025
57AQI
57AQI
8th August 2025
61AQI
61AQI
9th August 2025
63AQI
63AQI
10th August 2025
64AQI
64AQI
11th August 2025
62AQI
62AQI
12th August 2025
58AQI
58AQI
13th August 2025
48AQI
48AQI
14th August 2025
42AQI
42AQI
15th August 2025
39AQI
39AQI
16th August 2025
43AQI
43AQI
17th August 2025
48AQI
48AQI
18th August 2025
45AQI
45AQI
19th August 2025
47AQI
47AQI
20th August 2025
56AQI
56AQI
21st August 2025
59AQI
59AQI
22nd August 2025
54AQI
54AQI
23rd August 2025
54AQI
54AQI
24th August 2025
50AQI
50AQI
25th August 2025
47AQI
47AQI
26th August 2025
50AQI
50AQI
27th August 2025
44AQI
44AQI
28th August 2025
40AQI
40AQI
29th August 2025
42AQI
42AQI
30th August 2025
42AQI
42AQI
31st August 2025
48AQI
48AQI
1st September 2025
54AQI
54AQI
2nd September 2025
51AQI
51AQI
3rd September 2025
53AQI
53AQI
4th September 2025
54AQI
54AQI
5th September 2025
55AQI
55AQI
6th September 2025
56AQI
56AQI
7th September 2025
57AQI
57AQI
8th September 2025
53AQI
53AQI
9th September 2025
55AQI
55AQI
10th September 2025
54AQI
54AQI
11th September 2025
56AQI
56AQI
12th September 2025
56AQI
56AQI
13th September 2025
62AQI
62AQI
14th September 2025
57AQI
57AQI
15th September 2025
56AQI
56AQI
16th September 2025
51AQI
51AQI
17th September 2025
52AQI
52AQI
18th September 2025
52AQI
52AQI
19th September 2025
46AQI
46AQI
20th September 2025
57AQI
57AQI
21st September 2025
50AQI
50AQI
22nd September 2025
46AQI
46AQI
23rd September 2025
41AQI
41AQI
24th September 2025
41AQI
41AQI
25th September 2025
36AQI
36AQI
26th September 2025
29AQI
29AQI
27th September 2025
39AQI
39AQI
28th September 2025
46AQI
46AQI
29th September 2025
57AQI
57AQI
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
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
105AQI
97AQI
81AQI
80AQI
68AQI
55AQI
47AQI
52AQI
51AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202571AQI
13
17
1
16
12
1
26
4
27
3
2
29
9
21
21
10
16
15
9
20
58
177
36
1
Highest AQI recorded in
January105AQI
Lowest AQI recorded in
July47AQI
202466AQI
5
8
3
5
7
1
29
10
21
5
26
14
15
12
18
1
9
20
1
15
16
56
156
26
3
Highest AQI recorded in
January120AQI
Lowest AQI recorded in
May47AQI
202379AQI
3
2
24
5
2
27
5
Highest AQI recorded in
December79AQI
Lowest AQI recorded in
November71AQI
202267AQI
3
6
2
3
13
5
7
20
4
5
21
3
10
19
2
14
16
8
14
2
1
1
7
20
1
2
58
132
19
Highest AQI recorded in
February79AQI
Lowest AQI recorded in
June55AQI
202167AQI
11
8
1
12
12
19
12
23
8
9
21
14
7
2
1
20
8
13
15
2
78
104
33
3
Highest AQI recorded in
December107AQI
Lowest AQI recorded in
August44AQI
202065AQI
4
9
17
4
4
14
10
20
9
21
13
17
6
24
4
27
5
21
4
1
24
5
1
56
194
13
1
Highest AQI recorded in
April84AQI
Lowest AQI recorded in
June54AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
79AQILeast Polluted Year Recorded
2020(Avg.)
65AQISanmen Ring Supervision Station's annual 2025 AQI (71) shows an average percentage change of 3.3% (worsened AQI) compared to previous years: 2020 (65), 2021 (67), 2022 (67), 2023 (79), 2024 (66).
