Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Longhua County Environmental Protection Bureau, Chengde, Hebei, 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

Longhua County Environmental Protection Bureau, Chengde, Hebei, China

2021
2022
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
7th Aug 2024
83AQI
Lowest AQI recorded on
1st Aug 2021
1AQI

Same Day Analysis (5th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 59 of Moderate air quality on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 6th Aug - 7th Aug 2025

Longhua County Environmental Protection Bureau, Chengde, Hebei, China

AQI
Day
Night
.

4 AM6th Aug 2025

7 PM

3 AM7th Aug 2025

Day time
Avg. Highest Time
9AM6th Aug

72AQI

Avg. Lowest Time
3PM6th Aug

48AQI

Night time
Avg. Highest Time
12AM7th Aug

64AQI

Avg. Lowest Time
8PM6th Aug

57AQI

In the last 24 hours,

Longhua County Environmental Protection Bureau's AQI reached its highest point of 72 at 9 AM during the Day, while the lowest point, 48, was recorded at 3 PM during the Day between 6th Aug and 7th Aug 2025.

Day & Night AQI Trend : Jul - Aug 2025

Longhua County Environmental Protection Bureau, Chengde, Hebei, China

JulAug
08th - 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 - 05th05th - 06th06th - 07th07th
Day
Night
8th Jul 2025594 AMAQI
8th Jul 2025585 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025587 AMAQI
8th Jul 2025608 AMAQI
8th Jul 2025589 AMAQI
8th Jul 20255810 AMAQI
8th Jul 20256011 AMAQI
8th Jul 20255712 PMAQI
8th Jul 2025541 PMAQI
8th Jul 2025562 PMAQI
8th Jul 2025583 PMAQI
8th Jul 2025584 PMAQI
8th Jul 2025585 PMAQI
8th Jul 2025566 PMAQI
8th Jul 2025547 PMAQI
8th Jul 2025588 PMAQI
8th Jul 2025629 PMAQI
8th Jul 20256210 PMAQI
8th Jul 20256211 PMAQI
9th Jul 20256412 AMAQI
9th Jul 2025591 AMAQI
9th Jul 2025592 AMAQI
9th Jul 2025603 AMAQI

25°C20/30°C

9th Jul 2025594 AMAQI
9th Jul 2025605 AMAQI
9th Jul 2025596 AMAQI
9th Jul 2025607 AMAQI
9th Jul 2025738 AMAQI
9th Jul 2025689 AMAQI
9th Jul 20257210 AMAQI
9th Jul 20258811 AMAQI
9th Jul 20257112 PMAQI
9th Jul 2025601 PMAQI
9th Jul 2025612 PMAQI
9th Jul 2025613 PMAQI
9th Jul 2025584 PMAQI
9th Jul 2025565 PMAQI
9th Jul 2025636 PMAQI
9th Jul 2025687 PMAQI
9th Jul 2025658 PMAQI
9th Jul 2025649 PMAQI
9th Jul 20256610 PMAQI
9th Jul 20256611 PMAQI
10th Jul 20256612 AMAQI
10th Jul 2025611 AMAQI
10th Jul 2025612 AMAQI
10th Jul 2025613 AMAQI

26°C21/31°C

10th Jul 2025634 AMAQI
10th Jul 2025625 AMAQI
10th Jul 2025636 AMAQI
10th Jul 2025637 AMAQI
10th Jul 2025818 AMAQI
10th Jul 2025899 AMAQI
10th Jul 20258410 AMAQI
10th Jul 20259211 AMAQI
10th Jul 20257712 PMAQI
10th Jul 2025741 PMAQI
10th Jul 2025772 PMAQI
10th Jul 2025703 PMAQI
10th Jul 2025684 PMAQI
10th Jul 2025705 PMAQI
10th Jul 2025786 PMAQI
10th Jul 2025717 PMAQI
10th Jul 2025698 PMAQI
10th Jul 2025679 PMAQI
10th Jul 20256810 PMAQI
10th Jul 20256811 PMAQI
11th Jul 20256812 AMAQI
11th Jul 2025641 AMAQI
11th Jul 2025642 AMAQI
11th Jul 2025643 AMAQI

25°C23/29°C

11th Jul 2025664 AMAQI
11th Jul 2025655 AMAQI
11th Jul 2025666 AMAQI
11th Jul 2025667 AMAQI
11th Jul 2025848 AMAQI
11th Jul 2025969 AMAQI
11th Jul 20258910 AMAQI
11th Jul 20258411 AMAQI
11th Jul 20257912 PMAQI
11th Jul 2025691 PMAQI
11th Jul 2025742 PMAQI
11th Jul 2025723 PMAQI
11th Jul 2025804 PMAQI
11th Jul 2025865 PMAQI
11th Jul 2025746 PMAQI
11th Jul 2025777 PMAQI
11th Jul 2025738 PMAQI
11th Jul 2025739 PMAQI
11th Jul 20257210 PMAQI
11th Jul 20257011 PMAQI
12th Jul 20257012 AMAQI
12th Jul 2025681 AMAQI
12th Jul 2025662 AMAQI
12th Jul 2025663 AMAQI

26°C21/32°C

12th Jul 2025694 AMAQI
12th Jul 2025695 AMAQI
12th Jul 2025686 AMAQI
12th Jul 2025697 AMAQI
12th Jul 2025898 AMAQI
12th Jul 2025869 AMAQI
12th Jul 20258810 AMAQI
12th Jul 20258711 AMAQI
12th Jul 20258312 PMAQI
12th Jul 2025771 PMAQI
12th Jul 2025752 PMAQI
12th Jul 2025763 PMAQI
12th Jul 2025754 PMAQI
12th Jul 2025825 PMAQI
12th Jul 2025736 PMAQI
12th Jul 2025667 PMAQI
12th Jul 2025658 PMAQI
12th Jul 2025669 PMAQI
12th Jul 20256610 PMAQI
12th Jul 20256711 PMAQI
13th Jul 20256612 AMAQI
13th Jul 2025691 AMAQI
13th Jul 2025692 AMAQI
13th Jul 2025683 AMAQI

25°C18/34°C

13th Jul 2025704 AMAQI
13th Jul 2025705 AMAQI
13th Jul 2025706 AMAQI
13th Jul 2025717 AMAQI
13th Jul 2025618 AMAQI
13th Jul 2025569 AMAQI
13th Jul 20255510 AMAQI
13th Jul 20255111 AMAQI
13th Jul 20256012 PMAQI
13th Jul 2025561 PMAQI
13th Jul 2025592 PMAQI
13th Jul 2025563 PMAQI
13th Jul 2025544 PMAQI
13th Jul 2025525 PMAQI
13th Jul 2025526 PMAQI
13th Jul 2025547 PMAQI
13th Jul 2025648 PMAQI
13th Jul 2025669 PMAQI
13th Jul 20256610 PMAQI
13th Jul 20256411 PMAQI
14th Jul 20256512 AMAQI
14th Jul 2025661 AMAQI
14th Jul 2025672 AMAQI
14th Jul 2025653 AMAQI

25°C19/33°C

14th Jul 2025624 AMAQI
14th Jul 2025645 AMAQI
14th Jul 2025646 AMAQI
14th Jul 2025637 AMAQI
14th Jul 2025588 AMAQI
14th Jul 2025629 AMAQI
14th Jul 20255010 AMAQI
14th Jul 20254411 AMAQI
14th Jul 20255312 PMAQI
14th Jul 2025541 PMAQI
14th Jul 2025542 PMAQI
14th Jul 2025513 PMAQI
14th Jul 2025514 PMAQI
14th Jul 2025525 PMAQI
14th Jul 2025536 PMAQI
14th Jul 2025587 PMAQI
14th Jul 2025658 PMAQI
14th Jul 2025659 PMAQI
14th Jul 20256710 PMAQI
14th Jul 20256611 PMAQI
15th Jul 20256512 AMAQI
15th Jul 2025661 AMAQI
15th Jul 2025662 AMAQI
15th Jul 2025663 AMAQI

26°C19/31°C

15th Jul 2025654 AMAQI
15th Jul 2025655 AMAQI
15th Jul 2025656 AMAQI
15th Jul 2025657 AMAQI
15th Jul 2025608 AMAQI
15th Jul 2025559 AMAQI
15th Jul 20256610 AMAQI
15th Jul 20256611 AMAQI
15th Jul 20255912 PMAQI
15th Jul 2025601 PMAQI
15th Jul 2025572 PMAQI
15th Jul 2025563 PMAQI
15th Jul 2025554 PMAQI
15th Jul 2025565 PMAQI
15th Jul 2025566 PMAQI
15th Jul 2025567 PMAQI
15th Jul 2025628 PMAQI
15th Jul 2025649 PMAQI
15th Jul 20256310 PMAQI
15th Jul 20256411 PMAQI
16th Jul 20256412 AMAQI
16th Jul 2025651 AMAQI
16th Jul 2025662 AMAQI
16th Jul 2025643 AMAQI

20°C17/23°C

16th Jul 2025634 AMAQI
16th Jul 2025645 AMAQI
16th Jul 2025646 AMAQI
16th Jul 2025647 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025449 AMAQI
16th Jul 20254310 AMAQI
16th Jul 20254411 AMAQI
16th Jul 20255212 PMAQI
16th Jul 2025521 PMAQI
16th Jul 2025482 PMAQI
16th Jul 2025443 PMAQI
16th Jul 2025424 PMAQI
16th Jul 2025515 PMAQI
16th Jul 2025466 PMAQI
16th Jul 2025527 PMAQI
16th Jul 2025618 PMAQI
16th Jul 2025609 PMAQI
16th Jul 20255910 PMAQI
16th Jul 20256111 PMAQI
17th Jul 20256012 AMAQI
17th Jul 2025621 AMAQI
17th Jul 2025622 AMAQI
17th Jul 2025613 AMAQI

21°C18/26°C

17th Jul 2025604 AMAQI
17th Jul 2025595 AMAQI
17th Jul 2025616 AMAQI
17th Jul 2025607 AMAQI
17th Jul 2025558 AMAQI
17th Jul 2025489 AMAQI
17th Jul 20254010 AMAQI
17th Jul 20254011 AMAQI
17th Jul 20255012 PMAQI
17th Jul 2025511 PMAQI
17th Jul 2025512 PMAQI
17th Jul 2025443 PMAQI
17th Jul 2025414 PMAQI
17th Jul 2025445 PMAQI
17th Jul 2025456 PMAQI
17th Jul 2025457 PMAQI
17th Jul 2025588 PMAQI
17th Jul 2025609 PMAQI
17th Jul 20256010 PMAQI
17th Jul 20256111 PMAQI
18th Jul 20256012 AMAQI
18th Jul 2025601 AMAQI
18th Jul 2025602 AMAQI
18th Jul 2025603 AMAQI

23°C17/28°C

18th Jul 2025604 AMAQI
18th Jul 2025605 AMAQI
18th Jul 2025586 AMAQI
18th Jul 2025587 AMAQI
18th Jul 2025568 AMAQI
18th Jul 2025499 AMAQI
18th Jul 20255010 AMAQI
18th Jul 20254511 AMAQI
18th Jul 20255212 PMAQI
18th Jul 2025581 PMAQI
18th Jul 2025622 PMAQI
18th Jul 2025603 PMAQI
18th Jul 2025604 PMAQI
18th Jul 2025565 PMAQI
18th Jul 2025566 PMAQI
18th Jul 2025577 PMAQI
18th Jul 2025608 PMAQI
18th Jul 2025599 PMAQI
18th Jul 20256110 PMAQI
18th Jul 20256011 PMAQI
19th Jul 20255912 AMAQI
19th Jul 2025611 AMAQI
19th Jul 2025602 AMAQI
19th Jul 2025603 AMAQI

25°C19/31°C

19th Jul 2025604 AMAQI
19th Jul 2025605 AMAQI
19th Jul 2025606 AMAQI
19th Jul 2025607 AMAQI
19th Jul 2025588 AMAQI
19th Jul 2025579 AMAQI
19th Jul 20255810 AMAQI
19th Jul 20256211 AMAQI
19th Jul 20257012 PMAQI
19th Jul 2025631 PMAQI
19th Jul 2025662 PMAQI
19th Jul 2025663 PMAQI
19th Jul 2025684 PMAQI
19th Jul 2025735 PMAQI
19th Jul 2025726 PMAQI
19th Jul 2025707 PMAQI
19th Jul 2025658 PMAQI
19th Jul 2025649 PMAQI
19th Jul 20256410 PMAQI
19th Jul 20256411 PMAQI
20th Jul 20256612 AMAQI
20th Jul 2025621 AMAQI
20th Jul 2025602 AMAQI
20th Jul 2025603 AMAQI

24°C20/30°C

20th Jul 2025604 AMAQI
20th Jul 2025605 AMAQI
20th Jul 2025596 AMAQI
20th Jul 2025607 AMAQI
20th Jul 2025668 AMAQI
20th Jul 2025689 AMAQI
20th Jul 20256610 AMAQI
20th Jul 20255811 AMAQI
20th Jul 20255412 PMAQI
20th Jul 2025511 PMAQI
20th Jul 2025502 PMAQI
20th Jul 2025493 PMAQI
20th Jul 2025504 PMAQI
20th Jul 2025525 PMAQI
20th Jul 2025516 PMAQI
20th Jul 2025527 PMAQI
20th Jul 2025578 PMAQI
20th Jul 2025589 PMAQI
20th Jul 20255910 PMAQI
20th Jul 20255811 PMAQI
21st Jul 20255912 AMAQI
21st Jul 2025621 AMAQI
21st Jul 2025622 AMAQI
21st Jul 2025623 AMAQI

20°C18/21°C

21st Jul 2025604 AMAQI
21st Jul 2025595 AMAQI
21st Jul 2025606 AMAQI
21st Jul 2025617 AMAQI
21st Jul 2025588 AMAQI
21st Jul 2025589 AMAQI
21st Jul 20255410 AMAQI
21st Jul 20254111 AMAQI
21st Jul 20254112 PMAQI
21st Jul 2025441 PMAQI
21st Jul 2025562 PMAQI
21st Jul 2025463 PMAQI
21st Jul 2025454 PMAQI
21st Jul 2025535 PMAQI
21st Jul 2025536 PMAQI
21st Jul 2025577 PMAQI
21st Jul 2025588 PMAQI
21st Jul 2025609 PMAQI
21st Jul 20256010 PMAQI
21st Jul 20256111 PMAQI
22nd Jul 20256112 AMAQI
22nd Jul 2025591 AMAQI
22nd Jul 2025602 AMAQI
22nd Jul 2025603 AMAQI

25°C18/33°C

22nd Jul 2025594 AMAQI
22nd Jul 2025585 AMAQI
22nd Jul 2025586 AMAQI
22nd Jul 2025587 AMAQI
22nd Jul 2025648 AMAQI
22nd Jul 2025649 AMAQI
22nd Jul 20255710 AMAQI
22nd Jul 20255411 AMAQI
22nd Jul 20255912 PMAQI
22nd Jul 2025561 PMAQI
22nd Jul 2025602 PMAQI
22nd Jul 2025623 PMAQI
22nd Jul 2025584 PMAQI
22nd Jul 2025575 PMAQI
22nd Jul 2025556 PMAQI
22nd Jul 2025627 PMAQI
22nd Jul 2025618 PMAQI
22nd Jul 2025659 PMAQI
22nd Jul 20256410 PMAQI
22nd Jul 20256111 PMAQI
23rd Jul 20256712 AMAQI
23rd Jul 2025601 AMAQI
23rd Jul 2025602 AMAQI
23rd Jul 2025603 AMAQI

25°C19/31°C

23rd Jul 2025604 AMAQI
23rd Jul 2025605 AMAQI
23rd Jul 2025616 AMAQI
23rd Jul 2025607 AMAQI
23rd Jul 2025768 AMAQI
23rd Jul 2025809 AMAQI
23rd Jul 20256810 AMAQI
23rd Jul 20257211 AMAQI
23rd Jul 20257012 PMAQI
23rd Jul 2025661 PMAQI
23rd Jul 2025612 PMAQI
23rd Jul 2025593 PMAQI
23rd Jul 2025594 PMAQI
23rd Jul 2025565 PMAQI
23rd Jul 2025616 PMAQI
23rd Jul 2025607 PMAQI
23rd Jul 2025618 PMAQI
23rd Jul 2025649 PMAQI
23rd Jul 20256110 PMAQI
23rd Jul 20256311 PMAQI
24th Jul 20256312 AMAQI
24th Jul 2025621 AMAQI
24th Jul 2025622 AMAQI
24th Jul 2025623 AMAQI

24°C20/29°C

24th Jul 2025644 AMAQI
24th Jul 2025645 AMAQI
24th Jul 2025646 AMAQI
24th Jul 2025657 AMAQI
24th Jul 2025548 AMAQI
24th Jul 2025539 AMAQI
24th Jul 20255210 AMAQI
24th Jul 20255011 AMAQI
24th Jul 20255412 PMAQI
24th Jul 2025541 PMAQI
24th Jul 2025552 PMAQI
24th Jul 2025523 PMAQI
24th Jul 2025524 PMAQI
24th Jul 2025525 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025587 PMAQI
24th Jul 2025638 PMAQI
24th Jul 2025609 PMAQI
24th Jul 20256010 PMAQI
24th Jul 20256111 PMAQI
25th Jul 20256112 AMAQI
25th Jul 2025621 AMAQI
25th Jul 2025622 AMAQI
25th Jul 2025623 AMAQI

23°C20/26°C

25th Jul 2025624 AMAQI
25th Jul 2025615 AMAQI
25th Jul 2025616 AMAQI
25th Jul 2025617 AMAQI
25th Jul 2025448 AMAQI
25th Jul 2025489 AMAQI
25th Jul 20254210 AMAQI
25th Jul 20254211 AMAQI
25th Jul 20255412 PMAQI
25th Jul 2025591 PMAQI
25th Jul 2025572 PMAQI
25th Jul 2025563 PMAQI
25th Jul 2025584 PMAQI
25th Jul 2025625 PMAQI
25th Jul 2025656 PMAQI
25th Jul 2025627 PMAQI
25th Jul 2025628 PMAQI
25th Jul 2025649 PMAQI
25th Jul 20256410 PMAQI
25th Jul 20256311 PMAQI
26th Jul 20256212 AMAQI
26th Jul 2025591 AMAQI
26th Jul 2025592 AMAQI
26th Jul 2025593 AMAQI

23°C21/25°C

26th Jul 2025594 AMAQI
26th Jul 2025595 AMAQI
26th Jul 2025586 AMAQI
26th Jul 2025597 AMAQI
26th Jul 2025698 AMAQI
26th Jul 2025729 AMAQI
26th Jul 20257310 AMAQI
26th Jul 20257211 AMAQI
26th Jul 20257012 PMAQI
26th Jul 2025691 PMAQI
26th Jul 2025642 PMAQI
26th Jul 2025593 PMAQI
26th Jul 2025604 PMAQI
26th Jul 2025605 PMAQI
26th Jul 2025606 PMAQI
26th Jul 2025607 PMAQI
26th Jul 2025608 PMAQI
26th Jul 2025589 PMAQI
26th Jul 20255810 PMAQI
26th Jul 20255611 PMAQI
27th Jul 20255912 AMAQI
27th Jul 2025591 AMAQI
27th Jul 2025602 AMAQI
27th Jul 2025603 AMAQI

24°C22/28°C

27th Jul 2025624 AMAQI
27th Jul 2025625 AMAQI
27th Jul 2025616 AMAQI
27th Jul 2025637 AMAQI
27th Jul 2025598 AMAQI
27th Jul 2025549 AMAQI
27th Jul 20255410 AMAQI
27th Jul 20255011 AMAQI
27th Jul 20254212 PMAQI
27th Jul 2025441 PMAQI
27th Jul 2025502 PMAQI
27th Jul 2025443 PMAQI
27th Jul 2025544 PMAQI
27th Jul 2025565 PMAQI
27th Jul 2025566 PMAQI
27th Jul 2025567 PMAQI
27th Jul 2025568 PMAQI
27th Jul 2025579 PMAQI
27th Jul 20255810 PMAQI
27th Jul 20256011 PMAQI
28th Jul 20255912 AMAQI
28th Jul 2025591 AMAQI
28th Jul 2025592 AMAQI
28th Jul 2025593 AMAQI

23°C21/26°C

28th Jul 2025584 AMAQI
28th Jul 2025585 AMAQI
28th Jul 2025586 AMAQI
28th Jul 2025587 AMAQI
28th Jul 2025538 AMAQI
28th Jul 2025489 AMAQI
28th Jul 20254110 AMAQI
28th Jul 20255011 AMAQI
28th Jul 20255312 PMAQI
28th Jul 2025531 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025493 PMAQI
28th Jul 2025524 PMAQI
28th Jul 2025525 PMAQI
28th Jul 2025546 PMAQI
28th Jul 2025577 PMAQI
28th Jul 2025588 PMAQI
28th Jul 2025599 PMAQI
28th Jul 20255710 PMAQI
28th Jul 20255811 PMAQI
29th Jul 20255812 AMAQI
29th Jul 2025601 AMAQI
29th Jul 2025582 AMAQI
29th Jul 2025583 AMAQI

25°C22/29°C

29th Jul 2025604 AMAQI
29th Jul 2025595 AMAQI
29th Jul 2025596 AMAQI
29th Jul 2025597 AMAQI
29th Jul 2025428 AMAQI
29th Jul 2025349 AMAQI
29th Jul 20254610 AMAQI
29th Jul 20254211 AMAQI
29th Jul 20254312 PMAQI
29th Jul 2025471 PMAQI
29th Jul 2025412 PMAQI
29th Jul 2025433 PMAQI
29th Jul 2025404 PMAQI
29th Jul 2025385 PMAQI
29th Jul 2025366 PMAQI
29th Jul 2025507 PMAQI
29th Jul 2025588 PMAQI
29th Jul 2025559 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255711 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025601 AMAQI
30th Jul 2025602 AMAQI
30th Jul 2025593 AMAQI

21°C18/23°C

30th Jul 2025574 AMAQI
30th Jul 2025585 AMAQI
30th Jul 2025586 AMAQI
30th Jul 2025587 AMAQI
30th Jul 2025548 AMAQI
30th Jul 2025539 AMAQI
30th Jul 20254710 AMAQI
30th Jul 20255211 AMAQI
30th Jul 20254012 PMAQI
30th Jul 2025501 PMAQI
30th Jul 2025482 PMAQI
30th Jul 2025443 PMAQI
30th Jul 2025454 PMAQI
30th Jul 2025475 PMAQI
30th Jul 2025526 PMAQI
30th Jul 2025547 PMAQI
30th Jul 2025568 PMAQI
30th Jul 2025569 PMAQI
30th Jul 20255610 PMAQI
30th Jul 20255811 PMAQI
31st Jul 20255812 AMAQI
31st Jul 2025561 AMAQI
31st Jul 2025562 AMAQI
31st Jul 2025573 AMAQI

21°C17/25°C

31st Jul 2025574 AMAQI
31st Jul 2025575 AMAQI
31st Jul 2025576 AMAQI
31st Jul 2025577 AMAQI
31st Jul 2025578 AMAQI
31st Jul 2025579 AMAQI
31st Jul 20255410 AMAQI
31st Jul 20254911 AMAQI
31st Jul 20254612 PMAQI
31st Jul 2025511 PMAQI
31st Jul 2025542 PMAQI
31st Jul 2025553 PMAQI
31st Jul 2025594 PMAQI
31st Jul 2025535 PMAQI
31st Jul 2025506 PMAQI
31st Jul 2025607 PMAQI
31st Jul 2025638 PMAQI
31st Jul 2025589 PMAQI
31st Jul 20256110 PMAQI
31st Jul 20256311 PMAQI
1st Aug 20256112 AMAQI
1st Aug 2025571 AMAQI
1st Aug 2025572 AMAQI
1st Aug 2025613 AMAQI

21°C18/25°C

1st Aug 2025584 AMAQI
1st Aug 2025585 AMAQI
1st Aug 2025586 AMAQI
1st Aug 2025607 AMAQI
1st Aug 2025748 AMAQI
1st Aug 2025679 AMAQI
1st Aug 20257310 AMAQI
1st Aug 20256711 AMAQI
1st Aug 20257012 PMAQI
1st Aug 2025671 PMAQI
1st Aug 2025642 PMAQI
1st Aug 2025623 PMAQI
1st Aug 2025604 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025586 PMAQI
1st Aug 2025617 PMAQI
1st Aug 2025618 PMAQI
1st Aug 2025669 PMAQI
1st Aug 20256610 PMAQI
1st Aug 20256711 PMAQI
2nd Aug 20256112 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025582 AMAQI
2nd Aug 2025603 AMAQI

24°C18/29°C

2nd Aug 2025624 AMAQI
2nd Aug 2025615 AMAQI
2nd Aug 2025606 AMAQI
2nd Aug 2025607 AMAQI
2nd Aug 2025748 AMAQI
2nd Aug 2025679 AMAQI
2nd Aug 20257210 AMAQI
2nd Aug 20257011 AMAQI
2nd Aug 20256912 PMAQI
2nd Aug 2025661 PMAQI
2nd Aug 2025682 PMAQI
2nd Aug 2025703 PMAQI
2nd Aug 2025694 PMAQI
2nd Aug 2025645 PMAQI
2nd Aug 2025616 PMAQI
2nd Aug 2025627 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20256410 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20256212 AMAQI
3rd Aug 2025591 AMAQI
3rd Aug 2025592 AMAQI
3rd Aug 2025613 AMAQI

24°C20/29°C

3rd Aug 2025624 AMAQI
3rd Aug 2025625 AMAQI
3rd Aug 2025626 AMAQI
3rd Aug 2025627 AMAQI
3rd Aug 2025588 AMAQI
3rd Aug 2025609 AMAQI
3rd Aug 20256110 AMAQI
3rd Aug 20255811 AMAQI
3rd Aug 20256412 PMAQI
3rd Aug 2025541 PMAQI
3rd Aug 2025572 PMAQI
3rd Aug 2025613 PMAQI
3rd Aug 2025544 PMAQI
3rd Aug 2025625 PMAQI
3rd Aug 2025616 PMAQI
3rd Aug 2025667 PMAQI
3rd Aug 2025638 PMAQI
3rd Aug 2025629 PMAQI
3rd Aug 20256010 PMAQI
3rd Aug 20256311 PMAQI
4th Aug 20256212 AMAQI
4th Aug 2025591 AMAQI
4th Aug 2025602 AMAQI
4th Aug 2025603 AMAQI

24°C21/27°C

4th Aug 2025604 AMAQI
4th Aug 2025595 AMAQI
4th Aug 2025586 AMAQI
4th Aug 2025607 AMAQI
4th Aug 2025648 AMAQI
4th Aug 2025649 AMAQI
4th Aug 20255810 AMAQI
4th Aug 20255811 AMAQI
4th Aug 20256012 PMAQI
4th Aug 2025641 PMAQI
4th Aug 2025602 PMAQI
4th Aug 2025553 PMAQI
4th Aug 2025554 PMAQI
4th Aug 2025595 PMAQI
4th Aug 2025606 PMAQI
4th Aug 2025607 PMAQI
4th Aug 2025598 PMAQI
4th Aug 2025609 PMAQI
4th Aug 20256010 PMAQI
4th Aug 20255911 PMAQI
5th Aug 20255712 AMAQI
5th Aug 2025591 AMAQI
5th Aug 2025592 AMAQI
5th Aug 2025613 AMAQI

24°C21/27°C

5th Aug 2025624 AMAQI
5th Aug 2025615 AMAQI
5th Aug 2025616 AMAQI
5th Aug 2025617 AMAQI
5th Aug 2025598 AMAQI
5th Aug 2025589 AMAQI
5th Aug 20255010 AMAQI
5th Aug 20256011 AMAQI
5th Aug 20255112 PMAQI
5th Aug 2025541 PMAQI
5th Aug 2025542 PMAQI
5th Aug 2025583 PMAQI
5th Aug 2025584 PMAQI
5th Aug 2025585 PMAQI
5th Aug 2025566 PMAQI
5th Aug 2025567 PMAQI
5th Aug 2025598 PMAQI
5th Aug 2025629 PMAQI
5th Aug 20256310 PMAQI
5th Aug 20256411 PMAQI
6th Aug 20256112 AMAQI
6th Aug 2025591 AMAQI
6th Aug 2025612 AMAQI
6th Aug 2025603 AMAQI

24°C22/29°C

6th Aug 2025584 AMAQI
6th Aug 2025585 AMAQI
6th Aug 2025596 AMAQI
6th Aug 2025607 AMAQI
6th Aug 2025688 AMAQI
6th Aug 2025729 AMAQI
6th Aug 20257010 AMAQI
6th Aug 20256611 AMAQI
6th Aug 20256112 PMAQI
6th Aug 2025611 PMAQI
6th Aug 2025662 PMAQI
6th Aug 2025483 PMAQI
6th Aug 2025524 PMAQI
6th Aug 2025575 PMAQI
6th Aug 2025566 PMAQI
6th Aug 2025557 PMAQI
6th Aug 2025578 PMAQI
6th Aug 2025619 PMAQI
6th Aug 20256010 PMAQI
6th Aug 20256111 PMAQI
7th Aug 20256412 AMAQI
7th Aug 2025621 AMAQI
7th Aug 2025602 AMAQI
7th Aug 2025603 AMAQI

26°C20/32°C

7th Aug 2025614 AMAQI
4 AM
7th Aug 2025605 AMAQI
7th Aug 2025606 AMAQI
7th Aug 2025627 AMAQI
7th Aug 2025578 AMAQI
7th Aug 2025689 AMAQI
7th Aug 20256010 AMAQI
7th Aug 20256211 AMAQI
11 AM
7th Aug 20256712 PMAQI
7th Aug 2025571 PMAQI
7th Aug 2025582 PMAQI
7th Aug 2025573 PMAQI
7th Aug 2025534 PMAQI
7 PM
11 PM
3 AM

--°C/°C

Day time
Avg. Highest Time
4 AM - 2 PM

60AQI

11 hours / Day
330 hours / Month
Avg. Lowest Time
3 PM - 7 PM

57AQI

5 hours / Day
150 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 2 PM (Avg. 60), while the lowest AQI was between 3 PM to 7 PM (Avg. 57).
Night time
Avg. Highest Time
12 AM - 11 PM

62AQI

8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM

62AQI

8 hours / Day
240 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 62), while the lowest AQI was between 12 AM to 11 PM (Avg. 62).

2025 Days Vs Air Quality

Longhua County Environmental Protection Bureau, Chengde, Hebei, China

2025

3%

7

88%

192

7%

16

0.9%

2

Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)

Good
7 Days
Moderate
192 Days
Poor
16 Days
Unhealthy
2 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 3%

Health Risk Level:

Extreme

In 2025, 3% of 219 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

Longhua County Environmental Protection Bureau, Chengde, Hebei, 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
85AQI
2nd January 2025
70AQI
3rd January 2025
79AQI
4th January 2025
88AQI
5th January 2025
82AQI
6th January 2025
77AQI
7th January 2025
63AQI
8th January 2025
57AQI
9th January 2025
53AQI
10th January 2025
67AQI
11th January 2025
87AQI
12th January 2025
93AQI
13th January 2025
80AQI
14th January 2025
75AQI
15th January 2025
64AQI
16th January 2025
76AQI
17th January 2025
96AQI
18th January 2025
84AQI
19th January 2025
85AQI
20th January 2025
104AQI
21st January 2025
78AQI
22nd January 2025
92AQI
23rd January 2025
126AQI
24th January 2025
142AQI
25th January 2025
161AQI
26th January 2025
104AQI
27th January 2025
89AQI
28th January 2025
78AQI
29th January 2025
109AQI
30th January 2025
84AQI
31st January 2025
124AQI
1st February 2025
130AQI
2nd February 2025
99AQI
3rd February 2025
77AQI
4th February 2025
67AQI
5th February 2025
63AQI
6th February 2025
64AQI
7th February 2025
59AQI
8th February 2025
50AQI
9th February 2025
71AQI
10th February 2025
83AQI
11th February 2025
122AQI
12th February 2025
78AQI
13th February 2025
95AQI
14th February 2025
75AQI
15th February 2025
80AQI
16th February 2025
55AQI
17th February 2025
59AQI
18th February 2025
64AQI
19th February 2025
53AQI
20th February 2025
49AQI
21st February 2025
46AQI
22nd February 2025
55AQI
23rd February 2025
50AQI
24th February 2025
55AQI
25th February 2025
52AQI
26th February 2025
64AQI
27th February 2025
98AQI
28th February 2025
82AQI
1st March 2025
126AQI
2nd March 2025
70AQI
3rd March 2025
96AQI
4th March 2025
89AQI
5th March 2025
84AQI
6th March 2025
65AQI
7th March 2025
90AQI
8th March 2025
111AQI
9th March 2025
126AQI
10th March 2025
145AQI
11th March 2025
168AQI
12th March 2025
86AQI
13th March 2025
104AQI
14th March 2025
98AQI
15th March 2025
77AQI
16th March 2025
68AQI
17th March 2025
67AQI
18th March 2025
53AQI
19th March 2025
62AQI
20th March 2025
56AQI
21st March 2025
57AQI
22nd March 2025
64AQI
23rd March 2025
103AQI
24th March 2025
54AQI
25th March 2025
73AQI
26th March 2025
102AQI
27th March 2025
57AQI
28th March 2025
67AQI
29th March 2025
52AQI
30th March 2025
54AQI
31st March 2025
60AQI
1st April 2025
60AQI
2nd April 2025
51AQI
3rd April 2025
71AQI
4th April 2025
70AQI
5th April 2025
51AQI
6th April 2025
73AQI
7th April 2025
71AQI
8th April 2025
59AQI
9th April 2025
71AQI
10th April 2025
66AQI
11th April 2025
89AQI
12th April 2025
73AQI
13th April 2025
71AQI
14th April 2025
69AQI
15th April 2025
70AQI
16th April 2025
90AQI
17th April 2025
79AQI
18th April 2025
63AQI
19th April 2025
61AQI
20th April 2025
72AQI
21st April 2025
85AQI
22nd April 2025
63AQI
23rd April 2025
71AQI
24th April 2025
56AQI
25th April 2025
58AQI
26th April 2025
73AQI
27th April 2025
51AQI
28th April 2025
55AQI
29th April 2025
65AQI
30th April 2025
57AQI
1st May 2025
51AQI
2nd May 2025
65AQI
3rd May 2025
51AQI
4th May 2025
60AQI
5th May 2025
68AQI
6th May 2025
66AQI
7th May 2025
73AQI
8th May 2025
100AQI
9th May 2025
69AQI
10th May 2025
77AQI
11th May 2025
73AQI
12th May 2025
78AQI
13th May 2025
85AQI
14th May 2025
69AQI
15th May 2025
74AQI
16th May 2025
86AQI
17th May 2025
68AQI
18th May 2025
67AQI
19th May 2025
70AQI
20th May 2025
97AQI
21st May 2025
93AQI
22nd May 2025
113AQI
23rd May 2025
75AQI
24th May 2025
83AQI
25th May 2025
77AQI
26th May 2025
84AQI
27th May 2025
70AQI
28th May 2025
77AQI
29th May 2025
88AQI
30th May 2025
99AQI
31st May 2025
89AQI
1st June 2025
88AQI
2nd June 2025
64AQI
3rd June 2025
56AQI
4th June 2025
56AQI
5th June 2025
55AQI
6th June 2025
53AQI
7th June 2025
49AQI
8th June 2025
54AQI
9th June 2025
61AQI
10th June 2025
50AQI
11th June 2025
62AQI
12th June 2025
75AQI
13th June 2025
72AQI
14th June 2025
73AQI
15th June 2025
63AQI
16th June 2025
55AQI
17th June 2025
62AQI
18th June 2025
66AQI
19th June 2025
63AQI
20th June 2025
58AQI
21st June 2025
51AQI
22nd June 2025
46AQI
23rd June 2025
57AQI
24th June 2025
66AQI
25th June 2025
68AQI
26th June 2025
72AQI
27th June 2025
76AQI
28th June 2025
69AQI
29th June 2025
73AQI
30th June 2025
65AQI
1st July 2025
64AQI
2nd July 2025
61AQI
3rd July 2025
59AQI
4th July 2025
58AQI
5th July 2025
58AQI
6th July 2025
52AQI
7th July 2025
57AQI
8th July 2025
59AQI
9th July 2025
64AQI
10th July 2025
70AQI
11th July 2025
73AQI
12th July 2025
72AQI
13th July 2025
62AQI
14th July 2025
60AQI
15th July 2025
62AQI
16th July 2025
56AQI
17th July 2025
54AQI
18th July 2025
58AQI
19th July 2025
64AQI
20th July 2025
58AQI
21st July 2025
56AQI
22nd July 2025
60AQI
23rd July 2025
63AQI
24th July 2025
59AQI
25th July 2025
59AQI
26th July 2025
62AQI
27th July 2025
56AQI
28th July 2025
55AQI
29th July 2025
51AQI
30th July 2025
54AQI
31st July 2025
56AQI
1st August 2025
63AQI
2nd August 2025
63AQI
3rd August 2025
61AQI
4th August 2025
60AQI
5th August 2025
59AQI

89AQI

71AQI

83AQI

67AQI

77AQI

63AQI

60AQI

61AQI

No. of days

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

202573AQI

24
6
1
4
22
2
23
7
1
30
30
1
3
27
31
5
7
192
16
2

Highest AQI recorded in

January

89AQI

Lowest AQI recorded in

July

60AQI

202466AQI

3
11
2
1
1
1
3
9
30
5
26
19
12
13
16
9
17
4
1
5
18
4
3
1
27
3
61
166
13
4

Highest AQI recorded in

November

86AQI

Lowest AQI recorded in

April

16AQI

202368AQI

3
11
12
8
14
12
8

Highest AQI recorded in

December

71AQI

Lowest AQI recorded in

November

36AQI

202263AQI

7
12
11
1
15
6
13
14
4
15
10
5
17
14
11
14
5
15
9
1
93
80
25
1

Highest AQI recorded in

January

85AQI

Lowest AQI recorded in

February

46AQI

202153AQI

6
15
6
4
6
13
6
3
5
10
10
4
2
9
14
2
1
12
9
2
1
1
13
14
3
26
4
1
31
30
31
17
11
1
1
9
19
3
195
109
34
14
3

Highest AQI recorded in

March

124AQI

Lowest AQI recorded in

October

1AQI

202070AQI

1
9
2
1
3
15
3
8
7
3
1
24
5
24
7
2
28
1
13
15
1
19
7
3
2
15
11
3
1
9
17
5
71
157
33
4

Highest AQI recorded in

July

85AQI

Lowest AQI recorded in

September

59AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2025(Avg.)
73AQI
Least Polluted Year Recorded
2021(Avg.)
53AQI

Longhua County Environmental Protection Bureau's annual 2025 AQI (73) shows an average percentage change of 14.7% (worsened AQI) compared to previous years: 2020 (70), 2021 (53), 2022 (63), 2023 (68), 2024 (66).