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HistoryAQIPM2.5PM10COSO2NO2O3

Old Town, Heyuan, Guangdong, 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

Old Town, Heyuan, Guangdong, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
27th Aug 2024
82AQI
Lowest AQI recorded on
9th Aug 2021
22AQI

Same Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 53 of Moderate air quality, showing improvement over 2024 and 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

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

Old Town, Heyuan, Guangdong, China

AQI
Day
Night
.

5 AM3rd Aug 2025

7 PM

4 AM4th Aug 2025

Day time
Avg. Highest Time
5AM3rd Aug

57AQI

Avg. Lowest Time
5PM3rd Aug

36AQI

Night time
Avg. Highest Time
1AM4th Aug

57AQI

Avg. Lowest Time
9PM3rd Aug

50AQI

In the last 24 hours,

Old Town's AQI reached its highest point of 57 at 5 AM during the Day, while the lowest point, 36, was recorded at 5 PM during the Day between 3rd Aug and 4th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Old Town, Heyuan, Guangdong, China

JulAug
05th - 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 - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
5th Jul 2025445 AMAQI
5th Jul 2025436 AMAQI
5th Jul 2025437 AMAQI
5th Jul 2025658 AMAQI
5th Jul 2025709 AMAQI
5th Jul 20257310 AMAQI
5th Jul 20256911 AMAQI
5th Jul 20256012 PMAQI
5th Jul 2025641 PMAQI
5th Jul 2025582 PMAQI
5th Jul 2025523 PMAQI
5th Jul 2025534 PMAQI
5th Jul 2025545 PMAQI
5th Jul 2025526 PMAQI
5th Jul 2025507 PMAQI
5th Jul 2025528 PMAQI
5th Jul 2025529 PMAQI
5th Jul 20254610 PMAQI
5th Jul 20254611 PMAQI
6th Jul 20254612 AMAQI
6th Jul 2025481 AMAQI
6th Jul 2025492 AMAQI
6th Jul 2025493 AMAQI
6th Jul 2025524 AMAQI

29°C24/35°C

6th Jul 2025525 AMAQI
6th Jul 2025526 AMAQI
6th Jul 2025527 AMAQI
6th Jul 2025448 AMAQI
6th Jul 2025379 AMAQI
6th Jul 20254310 AMAQI
6th Jul 20254211 AMAQI
6th Jul 20254112 PMAQI
6th Jul 2025441 PMAQI
6th Jul 2025432 PMAQI
6th Jul 2025443 PMAQI
6th Jul 2025514 PMAQI
6th Jul 2025565 PMAQI
6th Jul 2025616 PMAQI
6th Jul 2025597 PMAQI
6th Jul 2025638 PMAQI
6th Jul 2025669 PMAQI
6th Jul 20256410 PMAQI
6th Jul 20255311 PMAQI
7th Jul 20255012 AMAQI
7th Jul 2025501 AMAQI
7th Jul 2025522 AMAQI
7th Jul 2025523 AMAQI
7th Jul 2025514 AMAQI

28°C23/36°C

7th Jul 2025515 AMAQI
7th Jul 2025526 AMAQI
7th Jul 2025517 AMAQI
7th Jul 2025538 AMAQI
7th Jul 2025549 AMAQI
7th Jul 20256210 AMAQI
7th Jul 20257811 AMAQI
7th Jul 20258312 PMAQI
7th Jul 2025821 PMAQI
7th Jul 2025872 PMAQI
7th Jul 2025863 PMAQI
7th Jul 2025864 PMAQI
7th Jul 2025875 PMAQI
7th Jul 2025866 PMAQI
7th Jul 2025787 PMAQI
7th Jul 2025588 PMAQI
7th Jul 2025609 PMAQI
7th Jul 20256710 PMAQI
7th Jul 20256511 PMAQI
8th Jul 20256412 AMAQI
8th Jul 2025521 AMAQI
8th Jul 2025522 AMAQI
8th Jul 2025543 AMAQI
8th Jul 2025564 AMAQI

29°C24/36°C

8th Jul 2025565 AMAQI
8th Jul 2025566 AMAQI
8th Jul 2025567 AMAQI
8th Jul 2025628 AMAQI
8th Jul 2025609 AMAQI
8th Jul 20256210 AMAQI
8th Jul 20256211 AMAQI
8th Jul 20256612 PMAQI
8th Jul 2025671 PMAQI
8th Jul 2025692 PMAQI
8th Jul 2025663 PMAQI
8th Jul 2025614 PMAQI
8th Jul 2025545 PMAQI
8th Jul 2025586 PMAQI
8th Jul 2025567 PMAQI
8th Jul 2025648 PMAQI
8th Jul 2025649 PMAQI
8th Jul 20256410 PMAQI
8th Jul 20255811 PMAQI
9th Jul 20255512 AMAQI
9th Jul 2025561 AMAQI
9th Jul 2025562 AMAQI
9th Jul 2025563 AMAQI
9th Jul 2025574 AMAQI

29°C24/36°C

9th Jul 2025585 AMAQI
9th Jul 2025586 AMAQI
9th Jul 2025577 AMAQI
9th Jul 2025608 AMAQI
9th Jul 2025579 AMAQI
9th Jul 20255510 AMAQI
9th Jul 20255411 AMAQI
9th Jul 20255512 PMAQI
9th Jul 2025611 PMAQI
9th Jul 2025662 PMAQI
9th Jul 2025703 PMAQI
9th Jul 2025734 PMAQI
9th Jul 2025735 PMAQI
9th Jul 2025656 PMAQI
9th Jul 2025667 PMAQI
9th Jul 2025628 PMAQI
9th Jul 2025749 PMAQI
9th Jul 20256610 PMAQI
9th Jul 20256411 PMAQI
10th Jul 20256212 AMAQI
10th Jul 2025561 AMAQI
10th Jul 2025562 AMAQI
10th Jul 2025563 AMAQI
10th Jul 2025584 AMAQI

29°C25/36°C

10th Jul 2025585 AMAQI
10th Jul 2025586 AMAQI
10th Jul 2025577 AMAQI
10th Jul 2025478 AMAQI
10th Jul 2025529 AMAQI
10th Jul 20255310 AMAQI
10th Jul 20255611 AMAQI
10th Jul 20254412 PMAQI
10th Jul 2025381 PMAQI
10th Jul 2025392 PMAQI
10th Jul 2025333 PMAQI
10th Jul 2025374 PMAQI
10th Jul 2025365 PMAQI
10th Jul 2025366 PMAQI
10th Jul 2025417 PMAQI
10th Jul 2025528 PMAQI
10th Jul 2025549 PMAQI
10th Jul 20255410 PMAQI
10th Jul 20255211 PMAQI
11th Jul 20255112 AMAQI
11th Jul 2025561 AMAQI
11th Jul 2025572 AMAQI
11th Jul 2025573 AMAQI
11th Jul 2025554 AMAQI

26°C24/30°C

11th Jul 2025555 AMAQI
11th Jul 2025556 AMAQI
11th Jul 2025557 AMAQI
11th Jul 2025278 AMAQI
11th Jul 2025199 AMAQI
11th Jul 20251810 AMAQI
11th Jul 20252011 AMAQI
11th Jul 20252412 PMAQI
11th Jul 2025251 PMAQI
11th Jul 2025252 PMAQI
11th Jul 2025263 PMAQI
11th Jul 2025264 PMAQI
11th Jul 2025245 PMAQI
11th Jul 2025256 PMAQI
11th Jul 2025317 PMAQI
11th Jul 2025488 PMAQI
11th Jul 2025459 PMAQI
11th Jul 20254410 PMAQI
11th Jul 20254611 PMAQI
12th Jul 20254412 AMAQI
12th Jul 2025531 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025543 AMAQI
12th Jul 2025524 AMAQI

24°C22/25°C

12th Jul 2025525 AMAQI
12th Jul 2025526 AMAQI
12th Jul 2025527 AMAQI
12th Jul 2025368 AMAQI
12th Jul 2025289 AMAQI
12th Jul 20253610 AMAQI
12th Jul 20254011 AMAQI
12th Jul 20255012 PMAQI
12th Jul 2025521 PMAQI
12th Jul 2025532 PMAQI
12th Jul 2025533 PMAQI
12th Jul 2025534 PMAQI
12th Jul 2025515 PMAQI
12th Jul 2025506 PMAQI
12th Jul 2025527 PMAQI
12th Jul 2025538 PMAQI
12th Jul 2025539 PMAQI
12th Jul 20255210 PMAQI
12th Jul 20255011 PMAQI
13th Jul 20255212 AMAQI
13th Jul 2025521 AMAQI
13th Jul 2025522 AMAQI
13th Jul 2025523 AMAQI
13th Jul 2025524 AMAQI

27°C23/31°C

13th Jul 2025525 AMAQI
13th Jul 2025526 AMAQI
13th Jul 2025527 AMAQI
13th Jul 2025458 AMAQI
13th Jul 2025389 AMAQI
13th Jul 20253910 AMAQI
13th Jul 20254711 AMAQI
13th Jul 20255212 PMAQI
13th Jul 2025551 PMAQI
13th Jul 2025562 PMAQI
13th Jul 2025573 PMAQI
13th Jul 2025584 PMAQI
13th Jul 2025565 PMAQI
13th Jul 2025576 PMAQI
13th Jul 2025567 PMAQI
13th Jul 2025548 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255310 PMAQI
13th Jul 20255211 PMAQI
14th Jul 20254812 AMAQI
14th Jul 2025531 AMAQI
14th Jul 2025522 AMAQI
14th Jul 2025523 AMAQI
14th Jul 2025524 AMAQI

28°C24/33°C

14th Jul 2025525 AMAQI
14th Jul 2025526 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025518 AMAQI
14th Jul 2025559 AMAQI
14th Jul 20255810 AMAQI
14th Jul 20256611 AMAQI
14th Jul 20256412 PMAQI
14th Jul 2025721 PMAQI
14th Jul 2025722 PMAQI
14th Jul 2025663 PMAQI
14th Jul 2025634 PMAQI
14th Jul 2025675 PMAQI
14th Jul 2025706 PMAQI
14th Jul 2025697 PMAQI
14th Jul 2025638 PMAQI
14th Jul 2025629 PMAQI
14th Jul 20256210 PMAQI
14th Jul 20256011 PMAQI
15th Jul 20255612 AMAQI
15th Jul 2025531 AMAQI
15th Jul 2025522 AMAQI
15th Jul 2025533 AMAQI
15th Jul 2025554 AMAQI

28°C24/33°C

15th Jul 2025555 AMAQI
15th Jul 2025556 AMAQI
15th Jul 2025557 AMAQI
15th Jul 2025568 AMAQI
15th Jul 2025569 AMAQI
15th Jul 20255610 AMAQI
15th Jul 20256411 AMAQI
15th Jul 20256412 PMAQI
15th Jul 2025701 PMAQI
15th Jul 2025762 PMAQI
15th Jul 2025763 PMAQI
15th Jul 2025614 PMAQI
15th Jul 2025605 PMAQI
15th Jul 2025616 PMAQI
15th Jul 2025627 PMAQI
15th Jul 2025618 PMAQI
15th Jul 2025629 PMAQI
15th Jul 20256410 PMAQI
15th Jul 20256311 PMAQI
16th Jul 20256112 AMAQI
16th Jul 2025551 AMAQI
16th Jul 2025542 AMAQI
16th Jul 2025553 AMAQI
16th Jul 2025564 AMAQI

28°C24/33°C

16th Jul 2025565 AMAQI
16th Jul 2025566 AMAQI
16th Jul 2025567 AMAQI
16th Jul 2025588 AMAQI
16th Jul 2025599 AMAQI
16th Jul 20255810 AMAQI
16th Jul 20255811 AMAQI
16th Jul 20255812 PMAQI
16th Jul 2025611 PMAQI
16th Jul 2025642 PMAQI
16th Jul 2025633 PMAQI
16th Jul 2025624 PMAQI
16th Jul 2025625 PMAQI
16th Jul 2025646 PMAQI
16th Jul 2025627 PMAQI
16th Jul 2025628 PMAQI
16th Jul 2025649 PMAQI
16th Jul 20256110 PMAQI
16th Jul 20256111 PMAQI
17th Jul 20256012 AMAQI
17th Jul 2025561 AMAQI
17th Jul 2025562 AMAQI
17th Jul 2025563 AMAQI
17th Jul 2025574 AMAQI

29°C25/34°C

17th Jul 2025575 AMAQI
17th Jul 2025576 AMAQI
17th Jul 2025577 AMAQI
17th Jul 2025598 AMAQI
17th Jul 2025639 AMAQI
17th Jul 20256610 AMAQI
17th Jul 20257211 AMAQI
17th Jul 20257512 PMAQI
17th Jul 2025741 PMAQI
17th Jul 2025782 PMAQI
17th Jul 2025783 PMAQI
17th Jul 2025804 PMAQI
17th Jul 2025795 PMAQI
17th Jul 2025786 PMAQI
17th Jul 2025767 PMAQI
17th Jul 2025668 PMAQI
17th Jul 2025759 PMAQI
17th Jul 20257310 PMAQI
17th Jul 20256611 PMAQI
18th Jul 20256512 AMAQI
18th Jul 2025571 AMAQI
18th Jul 2025572 AMAQI
18th Jul 2025583 AMAQI
18th Jul 2025604 AMAQI

30°C25/35°C

18th Jul 2025605 AMAQI
18th Jul 2025606 AMAQI
18th Jul 2025607 AMAQI
18th Jul 2025858 AMAQI
18th Jul 2025909 AMAQI
18th Jul 20259510 AMAQI
18th Jul 20259111 AMAQI
18th Jul 20258912 PMAQI
18th Jul 2025971 PMAQI
18th Jul 2025872 PMAQI
18th Jul 2025783 PMAQI
18th Jul 2025694 PMAQI
18th Jul 2025675 PMAQI
18th Jul 2025776 PMAQI
18th Jul 2025727 PMAQI
18th Jul 2025608 PMAQI
18th Jul 2025549 PMAQI
18th Jul 20255510 PMAQI
18th Jul 20255411 PMAQI
19th Jul 20255312 AMAQI
19th Jul 2025581 AMAQI
19th Jul 2025602 AMAQI
19th Jul 2025623 AMAQI
19th Jul 2025664 AMAQI

29°C24/36°C

19th Jul 2025665 AMAQI
19th Jul 2025666 AMAQI
19th Jul 2025667 AMAQI
19th Jul 2025668 AMAQI
19th Jul 2025549 AMAQI
19th Jul 20255410 AMAQI
19th Jul 20254911 AMAQI
19th Jul 20255712 PMAQI
19th Jul 2025601 PMAQI
19th Jul 2025572 PMAQI
19th Jul 2025523 PMAQI
19th Jul 2025474 PMAQI
19th Jul 2025445 PMAQI
19th Jul 2025436 PMAQI
19th Jul 2025467 PMAQI
19th Jul 2025568 PMAQI
19th Jul 2025549 PMAQI
19th Jul 20255310 PMAQI
19th Jul 20255211 PMAQI
20th Jul 20255212 AMAQI
20th Jul 2025601 AMAQI
20th Jul 2025622 AMAQI
20th Jul 2025613 AMAQI
20th Jul 2025604 AMAQI

28°C23/34°C

20th Jul 2025605 AMAQI
20th Jul 2025606 AMAQI
20th Jul 2025607 AMAQI
20th Jul 2025398 AMAQI
20th Jul 2025179 AMAQI
20th Jul 20251810 AMAQI
20th Jul 20252011 AMAQI
20th Jul 20252012 PMAQI
20th Jul 2025201 PMAQI
20th Jul 2025192 PMAQI
20th Jul 2025193 PMAQI
20th Jul 2025214 PMAQI
20th Jul 2025285 PMAQI
20th Jul 2025316 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025528 PMAQI
20th Jul 2025529 PMAQI
20th Jul 20255210 PMAQI
20th Jul 20255111 PMAQI
21st Jul 20255012 AMAQI
21st Jul 2025581 AMAQI
21st Jul 2025592 AMAQI
21st Jul 2025583 AMAQI
21st Jul 2025544 AMAQI

25°C24/27°C

21st Jul 2025545 AMAQI
21st Jul 2025546 AMAQI
21st Jul 2025547 AMAQI
21st Jul 2025258 AMAQI
21st Jul 2025189 AMAQI
21st Jul 20251810 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252712 PMAQI
21st Jul 2025341 PMAQI
21st Jul 2025232 PMAQI
21st Jul 2025333 PMAQI
21st Jul 2025314 PMAQI
21st Jul 2025325 PMAQI
21st Jul 2025276 PMAQI
21st Jul 2025377 PMAQI
21st Jul 2025518 PMAQI
21st Jul 2025519 PMAQI
21st Jul 20255010 PMAQI
21st Jul 20255111 PMAQI
22nd Jul 20254812 AMAQI
22nd Jul 2025541 AMAQI
22nd Jul 2025552 AMAQI
22nd Jul 2025533 AMAQI
22nd Jul 2025514 AMAQI

26°C24/29°C

22nd Jul 2025515 AMAQI
22nd Jul 2025516 AMAQI
22nd Jul 2025527 AMAQI
22nd Jul 2025318 AMAQI
22nd Jul 2025259 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252011 AMAQI
22nd Jul 20252512 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025242 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025314 PMAQI
22nd Jul 2025345 PMAQI
22nd Jul 2025306 PMAQI
22nd Jul 2025287 PMAQI
22nd Jul 2025418 PMAQI
22nd Jul 2025419 PMAQI
22nd Jul 20253810 PMAQI
22nd Jul 20253611 PMAQI
23rd Jul 20253612 AMAQI
23rd Jul 2025411 AMAQI
23rd Jul 2025522 AMAQI
23rd Jul 2025513 AMAQI
23rd Jul 2025474 AMAQI

26°C24/30°C

23rd Jul 2025465 AMAQI
23rd Jul 2025466 AMAQI
23rd Jul 2025467 AMAQI
23rd Jul 2025318 AMAQI
23rd Jul 2025299 AMAQI
23rd Jul 20252910 AMAQI
23rd Jul 20253111 AMAQI
23rd Jul 20254412 PMAQI
23rd Jul 2025441 PMAQI
23rd Jul 2025352 PMAQI
23rd Jul 2025263 PMAQI
23rd Jul 2025244 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025367 PMAQI
23rd Jul 2025428 PMAQI
23rd Jul 2025519 PMAQI
23rd Jul 20253810 PMAQI
23rd Jul 20253911 PMAQI
24th Jul 20254812 AMAQI
24th Jul 2025471 AMAQI
24th Jul 2025462 AMAQI
24th Jul 2025463 AMAQI
24th Jul 2025434 AMAQI

26°C24/31°C

24th Jul 2025435 AMAQI
24th Jul 2025436 AMAQI
24th Jul 2025437 AMAQI
24th Jul 2025268 AMAQI
24th Jul 2025299 AMAQI
24th Jul 20253410 AMAQI
24th Jul 20255311 AMAQI
24th Jul 20256312 PMAQI
24th Jul 2025651 PMAQI
24th Jul 2025562 PMAQI
24th Jul 2025563 PMAQI
24th Jul 2025644 PMAQI
24th Jul 2025585 PMAQI
24th Jul 2025626 PMAQI
24th Jul 2025657 PMAQI
24th Jul 2025588 PMAQI
24th Jul 2025549 PMAQI
24th Jul 20254410 PMAQI
24th Jul 20254011 PMAQI
25th Jul 20254012 AMAQI
25th Jul 2025471 AMAQI
25th Jul 2025462 AMAQI
25th Jul 2025463 AMAQI
25th Jul 2025484 AMAQI

28°C24/34°C

25th Jul 2025475 AMAQI
25th Jul 2025476 AMAQI
25th Jul 2025477 AMAQI
25th Jul 2025378 AMAQI
25th Jul 2025369 AMAQI
25th Jul 20253910 AMAQI
25th Jul 20255211 AMAQI
25th Jul 20255912 PMAQI
25th Jul 2025591 PMAQI
25th Jul 2025592 PMAQI
25th Jul 2025643 PMAQI
25th Jul 2025624 PMAQI
25th Jul 2025605 PMAQI
25th Jul 2025556 PMAQI
25th Jul 2025417 PMAQI
25th Jul 2025528 PMAQI
25th Jul 2025459 PMAQI
25th Jul 20254410 PMAQI
25th Jul 20254111 PMAQI
26th Jul 20254012 AMAQI
26th Jul 2025471 AMAQI
26th Jul 2025462 AMAQI
26th Jul 2025483 AMAQI
26th Jul 2025494 AMAQI

29°C23/36°C

26th Jul 2025485 AMAQI
26th Jul 2025486 AMAQI
26th Jul 2025487 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025609 AMAQI
26th Jul 20256210 AMAQI
26th Jul 20256811 AMAQI
26th Jul 20257412 PMAQI
26th Jul 2025731 PMAQI
26th Jul 2025752 PMAQI
26th Jul 2025753 PMAQI
26th Jul 2025704 PMAQI
26th Jul 2025745 PMAQI
26th Jul 2025416 PMAQI
26th Jul 2025477 PMAQI
26th Jul 2025548 PMAQI
26th Jul 2025589 PMAQI
26th Jul 20255410 PMAQI
26th Jul 20254811 PMAQI
27th Jul 20255112 AMAQI
27th Jul 2025491 AMAQI
27th Jul 2025502 AMAQI
27th Jul 2025503 AMAQI
27th Jul 2025534 AMAQI

29°C24/36°C

27th Jul 2025545 AMAQI
27th Jul 2025536 AMAQI
27th Jul 2025547 AMAQI
27th Jul 2025568 AMAQI
27th Jul 2025609 AMAQI
27th Jul 20256010 AMAQI
27th Jul 20256811 AMAQI
27th Jul 20257612 PMAQI
27th Jul 2025791 PMAQI
27th Jul 2025842 PMAQI
27th Jul 2025863 PMAQI
27th Jul 2025894 PMAQI
27th Jul 2025865 PMAQI
27th Jul 2025906 PMAQI
27th Jul 2025937 PMAQI
27th Jul 2025668 PMAQI
27th Jul 2025629 PMAQI
27th Jul 20256010 PMAQI
27th Jul 20255811 PMAQI
28th Jul 20255712 AMAQI
28th Jul 2025521 AMAQI
28th Jul 2025522 AMAQI
28th Jul 2025533 AMAQI
28th Jul 2025574 AMAQI

29°C24/35°C

28th Jul 2025565 AMAQI
28th Jul 2025576 AMAQI
28th Jul 2025577 AMAQI
28th Jul 2025608 AMAQI
28th Jul 2025629 AMAQI
28th Jul 20256210 AMAQI
28th Jul 20255811 AMAQI
28th Jul 20255812 PMAQI
28th Jul 2025611 PMAQI
28th Jul 2025642 PMAQI
28th Jul 2025653 PMAQI
28th Jul 2025624 PMAQI
28th Jul 2025525 PMAQI
28th Jul 2025506 PMAQI
28th Jul 2025487 PMAQI
28th Jul 2025518 PMAQI
28th Jul 2025509 PMAQI
28th Jul 20255210 PMAQI
28th Jul 20255411 PMAQI
29th Jul 20255512 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025542 AMAQI
29th Jul 2025553 AMAQI
29th Jul 2025564 AMAQI

27°C24/31°C

29th Jul 2025565 AMAQI
29th Jul 2025566 AMAQI
29th Jul 2025567 AMAQI
29th Jul 2025598 AMAQI
29th Jul 2025629 AMAQI
29th Jul 20255910 AMAQI
29th Jul 20255811 AMAQI
29th Jul 20255812 PMAQI
29th Jul 2025551 PMAQI
29th Jul 2025572 PMAQI
29th Jul 2025843 PMAQI
29th Jul 2025784 PMAQI
29th Jul 2025575 PMAQI
29th Jul 2025526 PMAQI
29th Jul 2025587 PMAQI
29th Jul 2025658 PMAQI
29th Jul 2025679 PMAQI
29th Jul 20256510 PMAQI
29th Jul 20255811 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025561 AMAQI
30th Jul 2025552 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025574 AMAQI

28°C23/34°C

30th Jul 2025575 AMAQI
30th Jul 2025576 AMAQI
30th Jul 2025577 AMAQI
30th Jul 2025678 AMAQI
30th Jul 2025709 AMAQI
30th Jul 20257210 AMAQI
30th Jul 20257711 AMAQI
30th Jul 20257812 PMAQI
30th Jul 2025761 PMAQI
30th Jul 2025582 PMAQI
30th Jul 2025773 PMAQI
30th Jul 2025644 PMAQI
30th Jul 2025635 PMAQI
30th Jul 2025576 PMAQI
30th Jul 2025497 PMAQI
30th Jul 2025528 PMAQI
30th Jul 2025529 PMAQI
30th Jul 20255210 PMAQI
30th Jul 20255111 PMAQI
31st Jul 20254712 AMAQI
31st Jul 2025551 AMAQI
31st Jul 2025552 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025564 AMAQI

29°C24/36°C

31st Jul 2025565 AMAQI
31st Jul 2025566 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025568 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20255210 AMAQI
31st Jul 20255011 AMAQI
31st Jul 20255012 PMAQI
31st Jul 2025481 PMAQI
31st Jul 2025502 PMAQI
31st Jul 2025523 PMAQI
31st Jul 2025524 PMAQI
31st Jul 2025495 PMAQI
31st Jul 2025466 PMAQI
31st Jul 2025487 PMAQI
31st Jul 2025548 PMAQI
31st Jul 2025559 PMAQI
31st Jul 20255610 PMAQI
31st Jul 20255611 PMAQI
1st Aug 20255612 AMAQI
1st Aug 2025571 AMAQI
1st Aug 2025572 AMAQI
1st Aug 2025553 AMAQI
1st Aug 2025544 AMAQI

28°C24/34°C

1st Aug 2025555 AMAQI
1st Aug 2025556 AMAQI
1st Aug 2025547 AMAQI
1st Aug 2025478 AMAQI
1st Aug 2025549 AMAQI
1st Aug 20255610 AMAQI
1st Aug 20255611 AMAQI
1st Aug 20255512 PMAQI
1st Aug 2025581 PMAQI
1st Aug 2025582 PMAQI
1st Aug 2025563 PMAQI
1st Aug 2025564 PMAQI
1st Aug 2025645 PMAQI
1st Aug 2025546 PMAQI
1st Aug 2025607 PMAQI
1st Aug 2025618 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256110 PMAQI
1st Aug 20255911 PMAQI
2nd Aug 20255612 AMAQI
2nd Aug 2025541 AMAQI
2nd Aug 2025552 AMAQI
2nd Aug 2025563 AMAQI
2nd Aug 2025564 AMAQI

28°C23/33°C

2nd Aug 2025565 AMAQI
2nd Aug 2025566 AMAQI
2nd Aug 2025567 AMAQI
2nd Aug 2025588 AMAQI
2nd Aug 2025629 AMAQI
2nd Aug 20255610 AMAQI
2nd Aug 20255511 AMAQI
2nd Aug 20255912 PMAQI
2nd Aug 2025521 PMAQI
2nd Aug 2025522 PMAQI
2nd Aug 2025433 PMAQI
2nd Aug 2025324 PMAQI
2nd Aug 2025325 PMAQI
2nd Aug 2025376 PMAQI
2nd Aug 2025427 PMAQI
2nd Aug 2025488 PMAQI
2nd Aug 2025529 PMAQI
2nd Aug 20255310 PMAQI
2nd Aug 20255211 PMAQI
3rd Aug 20255812 AMAQI
3rd Aug 2025561 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025563 AMAQI
3rd Aug 2025564 AMAQI

28°C24/33°C

3rd Aug 2025575 AMAQI
3rd Aug 2025566 AMAQI
3rd Aug 2025567 AMAQI
3rd Aug 2025418 AMAQI
3rd Aug 2025369 AMAQI
3rd Aug 20255010 AMAQI
3rd Aug 20255411 AMAQI
3rd Aug 20254812 PMAQI
3rd Aug 2025391 PMAQI
3rd Aug 2025422 PMAQI
3rd Aug 2025463 PMAQI
3rd Aug 2025384 PMAQI
3rd Aug 2025365 PMAQI
3rd Aug 2025396 PMAQI
3rd Aug 2025457 PMAQI
3rd Aug 2025528 PMAQI
3rd Aug 2025509 PMAQI
3rd Aug 20255310 PMAQI
3rd Aug 20255511 PMAQI
4th Aug 20255212 AMAQI
4th Aug 2025571 AMAQI
4th Aug 2025572 AMAQI
4th Aug 2025553 AMAQI
4th Aug 2025544 AMAQI

25°C23/28°C

4th Aug 2025545 AMAQI
5 AM
4th Aug 2025556 AMAQI
4th Aug 2025547 AMAQI
4th Aug 2025338 AMAQI
4th Aug 2025359 AMAQI
4th Aug 20253610 AMAQI
4th Aug 20252811 AMAQI
4th Aug 20253012 PMAQI
12 PM
4th Aug 2025321 PMAQI
4th Aug 2025312 PMAQI
4th Aug 2025253 PMAQI
4th Aug 2025194 PMAQI
7 PM
12 AM
4 AM

--°C/°C

Day time
Avg. Highest Time
11 AM - 7 PM

54AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
8 AM - 10 AM

49AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 11 AM to 7 PM (Avg. 54), while the lowest AQI was between 8 AM to 10 AM (Avg. 49).
Night time
Avg. Highest Time
12 AM - 11 PM

54AQI

9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM

54AQI

9 hours / Day
270 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 54), while the lowest AQI was between 12 AM to 11 PM (Avg. 54).

2025 Days Vs Air Quality

Old Town, Heyuan, Guangdong, China

2025

22%

47

70%

151

8%

17

Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)

Good
47 Days
Moderate
151 Days
Poor
17 Days
Unhealthy
0 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 22%

Health Risk Level:

Very high

In 2025, 22% of 216 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

Old Town, Heyuan, Guangdong, 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.

1st January 2025
123AQI
2nd January 2025
116AQI
3rd January 2025
111AQI
4th January 2025
104AQI
5th January 2025
118AQI
6th January 2025
125AQI
7th January 2025
126AQI
8th January 2025
122AQI
9th January 2025
105AQI
10th January 2025
84AQI
11th January 2025
86AQI
12th January 2025
75AQI
13th January 2025
79AQI
14th January 2025
79AQI
15th January 2025
88AQI
16th January 2025
89AQI
17th January 2025
75AQI
18th January 2025
81AQI
19th January 2025
82AQI
20th January 2025
79AQI
21st January 2025
87AQI
22nd January 2025
82AQI
23rd January 2025
85AQI
24th January 2025
87AQI
25th January 2025
72AQI
26th January 2025
44AQI
27th January 2025
61AQI
28th January 2025
70AQI
29th January 2025
107AQI
30th January 2025
98AQI
31st January 2025
96AQI
1st February 2025
90AQI
2nd February 2025
74AQI
3rd February 2025
45AQI
4th February 2025
72AQI
5th February 2025
66AQI
6th February 2025
72AQI
7th February 2025
57AQI
8th February 2025
64AQI
9th February 2025
59AQI
10th February 2025
68AQI
11th February 2025
85AQI
12th February 2025
73AQI
13th February 2025
78AQI
14th February 2025
84AQI
15th February 2025
78AQI
16th February 2025
100AQI
17th February 2025
75AQI
18th February 2025
74AQI
19th February 2025
81AQI
20th February 2025
82AQI
21st February 2025
54AQI
22nd February 2025
72AQI
23rd February 2025
40AQI
24th February 2025
60AQI
25th February 2025
70AQI
26th February 2025
85AQI
27th February 2025
89AQI
28th February 2025
79AQI
1st March 2025
70AQI
2nd March 2025
66AQI
3rd March 2025
80AQI
4th March 2025
53AQI
5th March 2025
43AQI
6th March 2025
41AQI
7th March 2025
55AQI
8th March 2025
62AQI
9th March 2025
65AQI
10th March 2025
77AQI
11th March 2025
65AQI
12th March 2025
63AQI
13th March 2025
66AQI
14th March 2025
63AQI
15th March 2025
46AQI
16th March 2025
47AQI
17th March 2025
78AQI
18th March 2025
67AQI
19th March 2025
69AQI
20th March 2025
72AQI
21st March 2025
75AQI
22nd March 2025
83AQI
23rd March 2025
90AQI
24th March 2025
108AQI
25th March 2025
117AQI
26th March 2025
96AQI
27th March 2025
87AQI
28th March 2025
85AQI
29th March 2025
42AQI
30th March 2025
38AQI
31st March 2025
31AQI
1st April 2025
57AQI
2nd April 2025
59AQI
3rd April 2025
69AQI
4th April 2025
76AQI
5th April 2025
64AQI
6th April 2025
84AQI
7th April 2025
82AQI
8th April 2025
97AQI
9th April 2025
105AQI
10th April 2025
93AQI
11th April 2025
86AQI
12th April 2025
84AQI
13th April 2025
142AQI
14th April 2025
120AQI
15th April 2025
112AQI
16th April 2025
104AQI
17th April 2025
89AQI
18th April 2025
87AQI
19th April 2025
82AQI
20th April 2025
83AQI
21st April 2025
69AQI
22nd April 2025
74AQI
23rd April 2025
76AQI
24th April 2025
58AQI
25th April 2025
45AQI
26th April 2025
55AQI
27th April 2025
63AQI
28th April 2025
51AQI
29th April 2025
67AQI
30th April 2025
74AQI
1st May 2025
72AQI
2nd May 2025
73AQI
3rd May 2025
83AQI
4th May 2025
74AQI
5th May 2025
74AQI
6th May 2025
60AQI
7th May 2025
57AQI
8th May 2025
60AQI
9th May 2025
45AQI
10th May 2025
56AQI
11th May 2025
54AQI
12th May 2025
62AQI
13th May 2025
67AQI
14th May 2025
64AQI
15th May 2025
54AQI
16th May 2025
53AQI
17th May 2025
57AQI
18th May 2025
59AQI
19th May 2025
55AQI
20th May 2025
52AQI
21st May 2025
58AQI
22nd May 2025
57AQI
23rd May 2025
54AQI
24th May 2025
55AQI
25th May 2025
82AQI
26th May 2025
87AQI
27th May 2025
80AQI
28th May 2025
71AQI
29th May 2025
46AQI
30th May 2025
53AQI
31st May 2025
57AQI
1st June 2025
61AQI
2nd June 2025
59AQI
3rd June 2025
45AQI
4th June 2025
63AQI
5th June 2025
56AQI
6th June 2025
66AQI
7th June 2025
67AQI
8th June 2025
61AQI
9th June 2025
65AQI
10th June 2025
56AQI
11th June 2025
48AQI
12th June 2025
49AQI
13th June 2025
41AQI
14th June 2025
44AQI
15th June 2025
50AQI
16th June 2025
36AQI
17th June 2025
35AQI
18th June 2025
43AQI
19th June 2025
37AQI
20th June 2025
34AQI
21st June 2025
36AQI
22nd June 2025
35AQI
23rd June 2025
45AQI
24th June 2025
44AQI
25th June 2025
43AQI
26th June 2025
37AQI
27th June 2025
33AQI
28th June 2025
36AQI
29th June 2025
33AQI
30th June 2025
32AQI
1st July 2025
35AQI
2nd July 2025
35AQI
3rd July 2025
41AQI
4th July 2025
49AQI
5th July 2025
51AQI
6th July 2025
52AQI
7th July 2025
65AQI
8th July 2025
60AQI
9th July 2025
61AQI
10th July 2025
50AQI
11th July 2025
40AQI
12th July 2025
50AQI
13th July 2025
52AQI
14th July 2025
60AQI
15th July 2025
60AQI
16th July 2025
59AQI
17th July 2025
67AQI
18th July 2025
69AQI
19th July 2025
56AQI
20th July 2025
43AQI
21st July 2025
42AQI
22nd July 2025
39AQI
23rd July 2025
39AQI
24th July 2025
50AQI
25th July 2025
49AQI
26th July 2025
56AQI
27th July 2025
65AQI
28th July 2025
55AQI
29th July 2025
59AQI
30th July 2025
60AQI
31st July 2025
53AQI
1st August 2025
57AQI
2nd August 2025
51AQI
3rd August 2025
53AQI

91AQI

72AQI

68AQI

80AQI

62AQI

46AQI

52AQI

54AQI

No. of days

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

202567AQI

1
20
10
2
26
7
22
2
1
24
5
2
29
21
9
13
18
3
47
151
17

Highest AQI recorded in

January

91AQI

Lowest AQI recorded in

June

46AQI

202459AQI

2
22
5
2
12
14
3
5
24
2
16
13
1
14
17
28
2
28
3
16
15
23
7
4
27
8
20
2
16
15
156
180
28
2

Highest AQI recorded in

December

98AQI

Lowest AQI recorded in

June

34AQI

202365AQI

4
18
7
2
5
16
7
6
17
8
7
23
8
23
24
6
20
10
17
14
13
17
7
22
2
4
21
4
3
25
3
118
212
31
2

Highest AQI recorded in

January

87AQI

Lowest AQI recorded in

June

41AQI

202260AQI

7
17
7
12
9
6
24
1
8
21
1
17
14
30
16
7
1
1
2
22
4
5
25
1
11
18
1
7
19
3
2
121
177
18
3

Highest AQI recorded in

December

78AQI

Lowest AQI recorded in

June

32AQI

202167AQI

19
12
4
22
2
3
23
5
2
25
3
15
13
3
20
10
11
20
12
9
16
12
2
9
22
3
27
2
23
6
97
225
33

Highest AQI recorded in

January

99AQI

Lowest AQI recorded in

June

44AQI

202069AQI

3
10
5
12
4
7
11
21
9
13
17
1
18
12
1
12
16
2
2
24
5
1
21
8
3
8
20
85
140
41

Highest AQI recorded in

December

99AQI

Lowest AQI recorded in

June

46AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2020(Avg.)
69AQI
Least Polluted Year Recorded
2024(Avg.)
59AQI

Old Town's annual 2025 AQI (67) shows an average percentage change of 5.3% (worsened AQI) compared to previous years: 2020 (69), 2021 (67), 2022 (60), 2023 (65), 2024 (59).