Huaian Environmental Protection Bureau, Zhangjiakou, 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
Huaian Environmental Protection Bureau, Zhangjiakou, Hebei, China
2021
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
7th Aug 2024
71AQILowest AQI recorded on
1st Aug 2021
1AQISame Day Analysis (2nd August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 64 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Huaian Environmental Protection Bureau, Zhangjiakou, Hebei, China
AQI
Day
Night
.
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
8AM2nd Aug
78AQI
Avg. Lowest Time
7AM2nd Aug
62AQI
Night time
Avg. Highest Time
11PM2nd Aug
67AQI
Avg. Lowest Time
1AM3rd Aug
59AQI
In the last 24 hours,
Huaian Environmental Protection Bureau's AQI reached its highest point of 78 at 8 AM during the Day, while the lowest point, 59, was recorded at 1 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Huaian Environmental Protection Bureau, Zhangjiakou, Hebei, China
JulAug
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 - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025635 AMAQI
4th Jul 2025636 AMAQI
4th Jul 2025637 AMAQI
4th Jul 2025658 AMAQI
4th Jul 2025669 AMAQI
4th Jul 20257010 AMAQI
4th Jul 20256711 AMAQI
4th Jul 20256512 PMAQI
4th Jul 2025711 PMAQI
4th Jul 2025702 PMAQI
4th Jul 2025723 PMAQI
4th Jul 2025664 PMAQI
4th Jul 2025625 PMAQI
4th Jul 2025656 PMAQI
4th Jul 2025647 PMAQI
4th Jul 2025648 PMAQI
4th Jul 2025679 PMAQI
4th Jul 20256510 PMAQI
4th Jul 20256611 PMAQI
5th Jul 20256412 AMAQI
5th Jul 2025641 AMAQI
5th Jul 2025632 AMAQI
5th Jul 2025643 AMAQI
5th Jul 2025654 AMAQI
27°C21/33°C
5th Jul 2025655 AMAQI
5th Jul 2025656 AMAQI
5th Jul 2025647 AMAQI
5th Jul 2025538 AMAQI
5th Jul 2025419 AMAQI
5th Jul 20254110 AMAQI
5th Jul 20253811 AMAQI
5th Jul 20255212 PMAQI
5th Jul 2025531 PMAQI
5th Jul 2025522 PMAQI
5th Jul 2025463 PMAQI
5th Jul 2025464 PMAQI
5th Jul 2025465 PMAQI
5th Jul 2025486 PMAQI
5th Jul 2025517 PMAQI
5th Jul 2025598 PMAQI
5th Jul 2025589 PMAQI
5th Jul 20255910 PMAQI
5th Jul 20255911 PMAQI
6th Jul 20256112 AMAQI
6th Jul 2025631 AMAQI
6th Jul 2025632 AMAQI
6th Jul 2025623 AMAQI
6th Jul 2025614 AMAQI
24°C21/28°C
6th Jul 2025615 AMAQI
6th Jul 2025616 AMAQI
6th Jul 2025617 AMAQI
6th Jul 2025468 AMAQI
6th Jul 2025389 AMAQI
6th Jul 20253210 AMAQI
6th Jul 20252611 AMAQI
6th Jul 20254412 PMAQI
6th Jul 2025421 PMAQI
6th Jul 2025412 PMAQI
6th Jul 2025413 PMAQI
6th Jul 2025454 PMAQI
6th Jul 2025485 PMAQI
6th Jul 2025526 PMAQI
6th Jul 2025537 PMAQI
6th Jul 2025608 PMAQI
6th Jul 2025609 PMAQI
6th Jul 20256010 PMAQI
6th Jul 20255911 PMAQI
7th Jul 20256012 AMAQI
7th Jul 2025621 AMAQI
7th Jul 2025622 AMAQI
7th Jul 2025613 AMAQI
7th Jul 2025604 AMAQI
24°C19/29°C
7th Jul 2025595 AMAQI
7th Jul 2025606 AMAQI
7th Jul 2025597 AMAQI
7th Jul 2025558 AMAQI
7th Jul 2025549 AMAQI
7th Jul 20255410 AMAQI
7th Jul 20255311 AMAQI
7th Jul 20255812 PMAQI
7th Jul 2025541 PMAQI
7th Jul 2025552 PMAQI
7th Jul 2025523 PMAQI
7th Jul 2025544 PMAQI
7th Jul 2025585 PMAQI
7th Jul 2025616 PMAQI
7th Jul 2025627 PMAQI
7th Jul 2025628 PMAQI
7th Jul 2025619 PMAQI
7th Jul 20256210 PMAQI
7th Jul 20256211 PMAQI
8th Jul 20256112 AMAQI
8th Jul 2025601 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025603 AMAQI
8th Jul 2025604 AMAQI
22°C18/27°C
8th Jul 2025605 AMAQI
8th Jul 2025606 AMAQI
8th Jul 2025607 AMAQI
8th Jul 2025718 AMAQI
8th Jul 2025759 AMAQI
8th Jul 20258110 AMAQI
8th Jul 20256811 AMAQI
8th Jul 20256612 PMAQI
8th Jul 2025641 PMAQI
8th Jul 2025642 PMAQI
8th Jul 2025603 PMAQI
8th Jul 2025604 PMAQI
8th Jul 2025625 PMAQI
8th Jul 2025626 PMAQI
8th Jul 2025617 PMAQI
8th Jul 2025658 PMAQI
8th Jul 2025669 PMAQI
8th Jul 20256810 PMAQI
8th Jul 20256611 PMAQI
9th Jul 20256612 AMAQI
9th Jul 2025601 AMAQI
9th Jul 2025602 AMAQI
9th Jul 2025603 AMAQI
9th Jul 2025604 AMAQI
24°C19/29°C
9th Jul 2025605 AMAQI
9th Jul 2025606 AMAQI
9th Jul 2025607 AMAQI
9th Jul 2025748 AMAQI
9th Jul 2025759 AMAQI
9th Jul 20257410 AMAQI
9th Jul 20258111 AMAQI
9th Jul 20257912 PMAQI
9th Jul 2025741 PMAQI
9th Jul 2025742 PMAQI
9th Jul 2025703 PMAQI
9th Jul 2025724 PMAQI
9th Jul 2025695 PMAQI
9th Jul 2025726 PMAQI
9th Jul 2025677 PMAQI
9th Jul 2025648 PMAQI
9th Jul 2025659 PMAQI
9th Jul 20256510 PMAQI
9th Jul 20256411 PMAQI
10th Jul 20256312 AMAQI
10th Jul 2025611 AMAQI
10th Jul 2025612 AMAQI
10th Jul 2025623 AMAQI
10th Jul 2025644 AMAQI
23°C20/27°C
10th Jul 2025635 AMAQI
10th Jul 2025646 AMAQI
10th Jul 2025637 AMAQI
10th Jul 2025668 AMAQI
10th Jul 2025589 AMAQI
10th Jul 20255810 AMAQI
10th Jul 20255611 AMAQI
10th Jul 20256412 PMAQI
10th Jul 2025641 PMAQI
10th Jul 2025622 PMAQI
10th Jul 2025613 PMAQI
10th Jul 2025644 PMAQI
10th Jul 2025665 PMAQI
10th Jul 2025666 PMAQI
10th Jul 2025677 PMAQI
10th Jul 2025668 PMAQI
10th Jul 2025679 PMAQI
10th Jul 20256810 PMAQI
10th Jul 20256511 PMAQI
11th Jul 20256412 AMAQI
11th Jul 2025621 AMAQI
11th Jul 2025612 AMAQI
11th Jul 2025623 AMAQI
11th Jul 2025614 AMAQI
23°C20/28°C
11th Jul 2025625 AMAQI
11th Jul 2025626 AMAQI
11th Jul 2025627 AMAQI
11th Jul 2025868 AMAQI
11th Jul 2025729 AMAQI
11th Jul 20257310 AMAQI
11th Jul 20258611 AMAQI
11th Jul 20258312 PMAQI
11th Jul 2025781 PMAQI
11th Jul 2025772 PMAQI
11th Jul 2025783 PMAQI
11th Jul 2025834 PMAQI
11th Jul 2025855 PMAQI
11th Jul 2025866 PMAQI
11th Jul 2025857 PMAQI
11th Jul 2025768 PMAQI
11th Jul 2025749 PMAQI
11th Jul 20257510 PMAQI
11th Jul 20257511 PMAQI
12th Jul 20257412 AMAQI
12th Jul 2025661 AMAQI
12th Jul 2025632 AMAQI
12th Jul 2025643 AMAQI
12th Jul 2025664 AMAQI
25°C20/31°C
12th Jul 2025655 AMAQI
12th Jul 2025666 AMAQI
12th Jul 2025667 AMAQI
12th Jul 2025948 AMAQI
12th Jul 20251209 AMAQI
12th Jul 202511510 AMAQI
12th Jul 202512211 AMAQI
12th Jul 20259412 PMAQI
12th Jul 2025921 PMAQI
12th Jul 2025882 PMAQI
12th Jul 2025753 PMAQI
12th Jul 2025684 PMAQI
12th Jul 2025655 PMAQI
12th Jul 2025626 PMAQI
12th Jul 2025607 PMAQI
12th Jul 2025658 PMAQI
12th Jul 2025649 PMAQI
12th Jul 20256710 PMAQI
12th Jul 20256611 PMAQI
13th Jul 20256612 AMAQI
13th Jul 2025661 AMAQI
13th Jul 2025672 AMAQI
13th Jul 2025683 AMAQI
13th Jul 2025714 AMAQI
26°C21/31°C
13th Jul 2025705 AMAQI
13th Jul 2025726 AMAQI
13th Jul 2025707 AMAQI
13th Jul 2025638 AMAQI
13th Jul 2025549 AMAQI
13th Jul 20255610 AMAQI
13th Jul 20255311 AMAQI
13th Jul 20255212 PMAQI
13th Jul 2025531 PMAQI
13th Jul 2025532 PMAQI
13th Jul 2025513 PMAQI
13th Jul 2025484 PMAQI
13th Jul 2025485 PMAQI
13th Jul 2025526 PMAQI
13th Jul 2025547 PMAQI
13th Jul 2025648 PMAQI
13th Jul 2025629 PMAQI
13th Jul 20256410 PMAQI
13th Jul 20256311 PMAQI
14th Jul 20256412 AMAQI
14th Jul 2025661 AMAQI
14th Jul 2025682 AMAQI
14th Jul 2025663 AMAQI
14th Jul 2025654 AMAQI
27°C21/33°C
14th Jul 2025645 AMAQI
14th Jul 2025656 AMAQI
14th Jul 2025657 AMAQI
14th Jul 2025498 AMAQI
14th Jul 2025529 AMAQI
14th Jul 20255410 AMAQI
14th Jul 20255411 AMAQI
14th Jul 20255712 PMAQI
14th Jul 2025591 PMAQI
14th Jul 2025602 PMAQI
14th Jul 2025703 PMAQI
14th Jul 2025684 PMAQI
14th Jul 2025725 PMAQI
14th Jul 2025726 PMAQI
14th Jul 2025767 PMAQI
14th Jul 2025748 PMAQI
14th Jul 2025809 PMAQI
14th Jul 20257810 PMAQI
14th Jul 20257711 PMAQI
15th Jul 20257812 AMAQI
15th Jul 2025691 AMAQI
15th Jul 2025652 AMAQI
15th Jul 2025643 AMAQI
15th Jul 2025644 AMAQI
25°C21/29°C
15th Jul 2025645 AMAQI
15th Jul 2025646 AMAQI
15th Jul 2025647 AMAQI
15th Jul 2025888 AMAQI
15th Jul 2025969 AMAQI
15th Jul 20259510 AMAQI
15th Jul 20259811 AMAQI
15th Jul 20258412 PMAQI
15th Jul 2025761 PMAQI
15th Jul 2025752 PMAQI
15th Jul 2025753 PMAQI
15th Jul 2025664 PMAQI
15th Jul 2025605 PMAQI
15th Jul 2025556 PMAQI
15th Jul 2025567 PMAQI
15th Jul 2025628 PMAQI
15th Jul 2025629 PMAQI
15th Jul 20256210 PMAQI
15th Jul 20256111 PMAQI
16th Jul 20256412 AMAQI
16th Jul 2025661 AMAQI
16th Jul 2025662 AMAQI
16th Jul 2025683 AMAQI
16th Jul 2025724 AMAQI
25°C19/32°C
16th Jul 2025735 AMAQI
16th Jul 2025726 AMAQI
16th Jul 2025737 AMAQI
16th Jul 2025608 AMAQI
16th Jul 2025519 AMAQI
16th Jul 20255010 AMAQI
16th Jul 20255311 AMAQI
16th Jul 20256012 PMAQI
16th Jul 2025591 PMAQI
16th Jul 2025562 PMAQI
16th Jul 2025553 PMAQI
16th Jul 2025464 PMAQI
16th Jul 2025545 PMAQI
16th Jul 2025506 PMAQI
16th Jul 2025517 PMAQI
16th Jul 2025628 PMAQI
16th Jul 2025629 PMAQI
16th Jul 20256310 PMAQI
16th Jul 20256411 PMAQI
17th Jul 20256312 AMAQI
17th Jul 2025701 AMAQI
17th Jul 2025682 AMAQI
17th Jul 2025683 AMAQI
17th Jul 2025664 AMAQI
24°C21/28°C
17th Jul 2025675 AMAQI
17th Jul 2025666 AMAQI
17th Jul 2025657 AMAQI
17th Jul 2025348 AMAQI
17th Jul 2025349 AMAQI
17th Jul 20253210 AMAQI
17th Jul 20253011 AMAQI
17th Jul 20255112 PMAQI
17th Jul 2025521 PMAQI
17th Jul 2025522 PMAQI
17th Jul 2025503 PMAQI
17th Jul 2025504 PMAQI
17th Jul 2025505 PMAQI
17th Jul 2025526 PMAQI
17th Jul 2025537 PMAQI
17th Jul 2025628 PMAQI
17th Jul 2025629 PMAQI
17th Jul 20256210 PMAQI
17th Jul 20256211 PMAQI
18th Jul 20256312 AMAQI
18th Jul 2025661 AMAQI
18th Jul 2025662 AMAQI
18th Jul 2025633 AMAQI
18th Jul 2025604 AMAQI
25°C18/32°C
18th Jul 2025615 AMAQI
18th Jul 2025606 AMAQI
18th Jul 2025617 AMAQI
18th Jul 2025558 AMAQI
18th Jul 2025509 AMAQI
18th Jul 20255210 AMAQI
18th Jul 20255311 AMAQI
18th Jul 20255612 PMAQI
18th Jul 2025551 PMAQI
18th Jul 2025572 PMAQI
18th Jul 2025563 PMAQI
18th Jul 2025604 PMAQI
18th Jul 2025605 PMAQI
18th Jul 2025606 PMAQI
18th Jul 2025637 PMAQI
18th Jul 2025628 PMAQI
18th Jul 2025659 PMAQI
18th Jul 20256610 PMAQI
18th Jul 20256311 PMAQI
19th Jul 20256212 AMAQI
19th Jul 2025611 AMAQI
19th Jul 2025612 AMAQI
19th Jul 2025623 AMAQI
19th Jul 2025604 AMAQI
26°C20/32°C
19th Jul 2025605 AMAQI
19th Jul 2025606 AMAQI
19th Jul 2025607 AMAQI
19th Jul 2025758 AMAQI
19th Jul 2025809 AMAQI
19th Jul 20257810 AMAQI
19th Jul 20257511 AMAQI
19th Jul 20257312 PMAQI
19th Jul 2025761 PMAQI
19th Jul 2025712 PMAQI
19th Jul 2025733 PMAQI
19th Jul 2025754 PMAQI
19th Jul 2025785 PMAQI
19th Jul 2025796 PMAQI
19th Jul 2025787 PMAQI
19th Jul 2025688 PMAQI
19th Jul 2025679 PMAQI
19th Jul 20256910 PMAQI
19th Jul 20256711 PMAQI
20th Jul 20256812 AMAQI
20th Jul 2025621 AMAQI
20th Jul 2025622 AMAQI
20th Jul 2025623 AMAQI
20th Jul 2025614 AMAQI
22°C20/25°C
20th Jul 2025625 AMAQI
20th Jul 2025606 AMAQI
20th Jul 2025607 AMAQI
20th Jul 2025458 AMAQI
20th Jul 2025279 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20252711 AMAQI
20th Jul 20253912 PMAQI
20th Jul 2025421 PMAQI
20th Jul 2025442 PMAQI
20th Jul 2025483 PMAQI
20th Jul 2025504 PMAQI
20th Jul 2025455 PMAQI
20th Jul 2025466 PMAQI
20th Jul 2025497 PMAQI
20th Jul 2025578 PMAQI
20th Jul 2025589 PMAQI
20th Jul 20255710 PMAQI
20th Jul 20255811 PMAQI
21st Jul 20255812 AMAQI
21st Jul 2025621 AMAQI
21st Jul 2025622 AMAQI
21st Jul 2025623 AMAQI
21st Jul 2025594 AMAQI
23°C18/28°C
21st Jul 2025605 AMAQI
21st Jul 2025606 AMAQI
21st Jul 2025607 AMAQI
21st Jul 2025548 AMAQI
21st Jul 2025539 AMAQI
21st Jul 20254810 AMAQI
21st Jul 20255011 AMAQI
21st Jul 20255412 PMAQI
21st Jul 2025471 PMAQI
21st Jul 2025462 PMAQI
21st Jul 2025463 PMAQI
21st Jul 2025414 PMAQI
21st Jul 2025445 PMAQI
21st Jul 2025456 PMAQI
21st Jul 2025507 PMAQI
21st Jul 2025588 PMAQI
21st Jul 2025649 PMAQI
21st Jul 20256310 PMAQI
21st Jul 20256411 PMAQI
22nd Jul 20256312 AMAQI
22nd Jul 2025601 AMAQI
22nd Jul 2025602 AMAQI
22nd Jul 2025603 AMAQI
22nd Jul 2025594 AMAQI
24°C19/30°C
22nd Jul 2025595 AMAQI
22nd Jul 2025596 AMAQI
22nd Jul 2025587 AMAQI
22nd Jul 2025598 AMAQI
22nd Jul 2025609 AMAQI
22nd Jul 20255910 AMAQI
22nd Jul 20256111 AMAQI
22nd Jul 20256912 PMAQI
22nd Jul 2025631 PMAQI
22nd Jul 2025602 PMAQI
22nd Jul 2025643 PMAQI
22nd Jul 2025624 PMAQI
22nd Jul 2025605 PMAQI
22nd Jul 2025616 PMAQI
22nd Jul 2025627 PMAQI
22nd Jul 2025678 PMAQI
22nd Jul 2025669 PMAQI
22nd Jul 20256510 PMAQI
22nd Jul 20256611 PMAQI
23rd Jul 20256412 AMAQI
23rd Jul 2025631 AMAQI
23rd Jul 2025642 AMAQI
23rd Jul 2025633 AMAQI
23rd Jul 2025644 AMAQI
24°C19/30°C
23rd Jul 2025665 AMAQI
23rd Jul 2025666 AMAQI
23rd Jul 2025657 AMAQI
23rd Jul 2025788 AMAQI
23rd Jul 2025789 AMAQI
23rd Jul 20257610 AMAQI
23rd Jul 20257811 AMAQI
23rd Jul 20257612 PMAQI
23rd Jul 2025661 PMAQI
23rd Jul 2025662 PMAQI
23rd Jul 2025613 PMAQI
23rd Jul 2025624 PMAQI
23rd Jul 2025615 PMAQI
23rd Jul 2025626 PMAQI
23rd Jul 2025677 PMAQI
23rd Jul 2025638 PMAQI
23rd Jul 2025639 PMAQI
23rd Jul 20256410 PMAQI
23rd Jul 20256211 PMAQI
24th Jul 20256212 AMAQI
24th Jul 2025641 AMAQI
24th Jul 2025652 AMAQI
24th Jul 2025643 AMAQI
24th Jul 2025624 AMAQI
24°C18/30°C
24th Jul 2025635 AMAQI
24th Jul 2025626 AMAQI
24th Jul 2025627 AMAQI
24th Jul 2025608 AMAQI
24th Jul 2025579 AMAQI
24th Jul 20256110 AMAQI
24th Jul 20256011 AMAQI
24th Jul 20255612 PMAQI
24th Jul 2025581 PMAQI
24th Jul 2025642 PMAQI
24th Jul 2025623 PMAQI
24th Jul 2025614 PMAQI
24th Jul 2025615 PMAQI
24th Jul 2025616 PMAQI
24th Jul 2025637 PMAQI
24th Jul 2025628 PMAQI
24th Jul 2025609 PMAQI
24th Jul 20256210 PMAQI
24th Jul 20256011 PMAQI
25th Jul 20256212 AMAQI
25th Jul 2025631 AMAQI
25th Jul 2025622 AMAQI
25th Jul 2025623 AMAQI
25th Jul 2025614 AMAQI
21°C20/24°C
25th Jul 2025615 AMAQI
25th Jul 2025616 AMAQI
25th Jul 2025607 AMAQI
25th Jul 2025438 AMAQI
25th Jul 2025399 AMAQI
25th Jul 20253610 AMAQI
25th Jul 20253011 AMAQI
25th Jul 20254812 PMAQI
25th Jul 2025531 PMAQI
25th Jul 2025582 PMAQI
25th Jul 2025573 PMAQI
25th Jul 2025574 PMAQI
25th Jul 2025585 PMAQI
25th Jul 2025616 PMAQI
25th Jul 2025637 PMAQI
25th Jul 2025678 PMAQI
25th Jul 2025649 PMAQI
25th Jul 20256510 PMAQI
25th Jul 20256511 PMAQI
26th Jul 20256212 AMAQI
26th Jul 2025611 AMAQI
26th Jul 2025612 AMAQI
26th Jul 2025593 AMAQI
26th Jul 2025594 AMAQI
22°C20/25°C
26th Jul 2025595 AMAQI
26th Jul 2025596 AMAQI
26th Jul 2025597 AMAQI
26th Jul 2025648 AMAQI
26th Jul 2025599 AMAQI
26th Jul 20255910 AMAQI
26th Jul 20256011 AMAQI
26th Jul 20256812 PMAQI
26th Jul 2025731 PMAQI
26th Jul 2025662 PMAQI
26th Jul 2025633 PMAQI
26th Jul 2025584 PMAQI
26th Jul 2025565 PMAQI
26th Jul 2025566 PMAQI
26th Jul 2025577 PMAQI
26th Jul 2025658 PMAQI
26th Jul 2025669 PMAQI
26th Jul 20256210 PMAQI
26th Jul 20256011 PMAQI
27th Jul 20255912 AMAQI
27th Jul 2025611 AMAQI
27th Jul 2025592 AMAQI
27th Jul 2025613 AMAQI
27th Jul 2025604 AMAQI
21°C19/24°C
27th Jul 2025605 AMAQI
27th Jul 2025616 AMAQI
27th Jul 2025607 AMAQI
27th Jul 2025618 AMAQI
27th Jul 2025549 AMAQI
27th Jul 20255510 AMAQI
27th Jul 20255611 AMAQI
27th Jul 20255712 PMAQI
27th Jul 2025621 PMAQI
27th Jul 2025632 PMAQI
27th Jul 2025623 PMAQI
27th Jul 2025604 PMAQI
27th Jul 2025625 PMAQI
27th Jul 2025626 PMAQI
27th Jul 2025647 PMAQI
27th Jul 2025638 PMAQI
27th Jul 2025659 PMAQI
27th Jul 20256410 PMAQI
27th Jul 20256511 PMAQI
28th Jul 20256412 AMAQI
28th Jul 2025611 AMAQI
28th Jul 2025602 AMAQI
28th Jul 2025603 AMAQI
28th Jul 2025594 AMAQI
23°C20/26°C
28th Jul 2025595 AMAQI
28th Jul 2025606 AMAQI
28th Jul 2025607 AMAQI
28th Jul 2025648 AMAQI
28th Jul 2025669 AMAQI
28th Jul 20256410 AMAQI
28th Jul 20257211 AMAQI
28th Jul 20257612 PMAQI
28th Jul 2025781 PMAQI
28th Jul 2025722 PMAQI
28th Jul 2025703 PMAQI
28th Jul 2025664 PMAQI
28th Jul 2025645 PMAQI
28th Jul 2025666 PMAQI
28th Jul 2025667 PMAQI
28th Jul 2025638 PMAQI
28th Jul 2025649 PMAQI
28th Jul 20256010 PMAQI
28th Jul 20256211 PMAQI
29th Jul 20256312 AMAQI
29th Jul 2025621 AMAQI
29th Jul 2025612 AMAQI
29th Jul 2025613 AMAQI
29th Jul 2025604 AMAQI
25°C19/30°C
29th Jul 2025615 AMAQI
29th Jul 2025626 AMAQI
29th Jul 2025617 AMAQI
29th Jul 2025608 AMAQI
29th Jul 2025589 AMAQI
29th Jul 20255610 AMAQI
29th Jul 20255611 AMAQI
29th Jul 20254912 PMAQI
29th Jul 2025481 PMAQI
29th Jul 2025472 PMAQI
29th Jul 2025483 PMAQI
29th Jul 2025434 PMAQI
29th Jul 2025365 PMAQI
29th Jul 2025406 PMAQI
29th Jul 2025487 PMAQI
29th Jul 2025578 PMAQI
29th Jul 2025599 PMAQI
29th Jul 20256110 PMAQI
29th Jul 20256011 PMAQI
30th Jul 20256112 AMAQI
30th Jul 2025611 AMAQI
30th Jul 2025612 AMAQI
30th Jul 2025603 AMAQI
30th Jul 2025584 AMAQI
24°C19/29°C
30th Jul 2025585 AMAQI
30th Jul 2025586 AMAQI
30th Jul 2025587 AMAQI
30th Jul 2025428 AMAQI
30th Jul 2025429 AMAQI
30th Jul 20253010 AMAQI
30th Jul 20252711 AMAQI
30th Jul 20253712 PMAQI
30th Jul 2025381 PMAQI
30th Jul 2025382 PMAQI
30th Jul 2025393 PMAQI
30th Jul 2025424 PMAQI
30th Jul 2025475 PMAQI
30th Jul 2025516 PMAQI
30th Jul 2025527 PMAQI
30th Jul 2025548 PMAQI
30th Jul 2025569 PMAQI
30th Jul 20255610 PMAQI
30th Jul 20255811 PMAQI
31st Jul 20256012 AMAQI
31st Jul 2025581 AMAQI
31st Jul 2025592 AMAQI
31st Jul 2025583 AMAQI
31st Jul 2025584 AMAQI
21°C16/26°C
31st Jul 2025585 AMAQI
31st Jul 2025586 AMAQI
31st Jul 2025587 AMAQI
31st Jul 2025588 AMAQI
31st Jul 2025589 AMAQI
31st Jul 20255710 AMAQI
31st Jul 20256011 AMAQI
31st Jul 20256012 PMAQI
31st Jul 2025621 PMAQI
31st Jul 2025712 PMAQI
31st Jul 2025703 PMAQI
31st Jul 2025664 PMAQI
31st Jul 2025645 PMAQI
31st Jul 2025656 PMAQI
31st Jul 2025647 PMAQI
31st Jul 2025638 PMAQI
31st Jul 2025659 PMAQI
31st Jul 20256310 PMAQI
31st Jul 20256511 PMAQI
1st Aug 20256612 AMAQI
1st Aug 2025591 AMAQI
1st Aug 2025572 AMAQI
1st Aug 2025593 AMAQI
1st Aug 2025584 AMAQI
20°C18/21°C
1st Aug 2025585 AMAQI
1st Aug 2025586 AMAQI
1st Aug 2025587 AMAQI
1st Aug 2025798 AMAQI
1st Aug 2025719 AMAQI
1st Aug 20257110 AMAQI
1st Aug 20256911 AMAQI
1st Aug 20256412 PMAQI
1st Aug 2025721 PMAQI
1st Aug 2025742 PMAQI
1st Aug 2025763 PMAQI
1st Aug 2025784 PMAQI
1st Aug 2025705 PMAQI
1st Aug 2025736 PMAQI
1st Aug 2025667 PMAQI
1st Aug 2025668 PMAQI
1st Aug 2025679 PMAQI
1st Aug 20257110 PMAQI
1st Aug 20256911 PMAQI
2nd Aug 20256412 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025582 AMAQI
2nd Aug 2025603 AMAQI
2nd Aug 2025624 AMAQI
23°C17/30°C
2nd Aug 2025625 AMAQI
2nd Aug 2025626 AMAQI
2nd Aug 2025627 AMAQI
2nd Aug 2025788 AMAQI
2nd Aug 2025739 AMAQI
2nd Aug 20257010 AMAQI
2nd Aug 20257411 AMAQI
2nd Aug 20257612 PMAQI
2nd Aug 2025781 PMAQI
2nd Aug 2025722 PMAQI
2nd Aug 2025743 PMAQI
2nd Aug 2025694 PMAQI
2nd Aug 2025645 PMAQI
2nd Aug 2025686 PMAQI
2nd Aug 2025647 PMAQI
2nd Aug 2025648 PMAQI
2nd Aug 2025659 PMAQI
2nd Aug 20256610 PMAQI
2nd Aug 20256711 PMAQI
3rd Aug 20256612 AMAQI
3rd Aug 2025591 AMAQI
3rd Aug 2025602 AMAQI
3rd Aug 2025643 AMAQI
3rd Aug 2025644 AMAQI
24°C19/30°C
3rd Aug 2025645 AMAQI
5 AM3rd Aug 2025646 AMAQI
3rd Aug 2025637 AMAQI
3rd Aug 2025688 AMAQI
3rd Aug 2025689 AMAQI
3rd Aug 20256810 AMAQI
3rd Aug 20256811 AMAQI
3rd Aug 20257212 PMAQI
12 PM3rd Aug 2025621 PMAQI
3rd Aug 2025652 PMAQI
3rd Aug 2025683 PMAQI
3rd Aug 2025644 PMAQI
3rd Aug 2025655 PMAQI
3rd Aug 2025616 PMAQI
3rd Aug 2025617 PMAQI
7 PM3rd Aug 2025658 PMAQI
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
61AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
61AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 61), while the lowest AQI was between 5 AM to 7 PM (Avg. 61).
Night time
Avg. Highest Time
12 AM - 11 PM
63AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
63AQI
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. 63), while the lowest AQI was between 12 AM to 11 PM (Avg. 63).
2025 Days Vs Air Quality
Huaian Environmental Protection Bureau, Zhangjiakou, Hebei, China
2025
7%
14
83%
177
9%
19
2%
4
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
14 DaysModerate
177 DaysPoor
19 DaysUnhealthy
4 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 7%
Health Risk Level:
Extreme
In 2025, 7% of 215 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
Huaian Environmental Protection Bureau, Zhangjiakou, 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
68AQI
68AQI
2nd January 2025
62AQI
62AQI
3rd January 2025
66AQI
66AQI
4th January 2025
69AQI
69AQI
5th January 2025
64AQI
64AQI
6th January 2025
50AQI
50AQI
7th January 2025
49AQI
49AQI
8th January 2025
44AQI
44AQI
9th January 2025
53AQI
53AQI
10th January 2025
58AQI
58AQI
11th January 2025
77AQI
77AQI
12th January 2025
65AQI
65AQI
13th January 2025
72AQI
72AQI
14th January 2025
44AQI
44AQI
15th January 2025
75AQI
75AQI
16th January 2025
65AQI
65AQI
17th January 2025
89AQI
89AQI
18th January 2025
83AQI
83AQI
19th January 2025
76AQI
76AQI
20th January 2025
92AQI
92AQI
21st January 2025
72AQI
72AQI
22nd January 2025
98AQI
98AQI
23rd January 2025
121AQI
121AQI
24th January 2025
141AQI
141AQI
25th January 2025
156AQI
156AQI
26th January 2025
109AQI
109AQI
27th January 2025
79AQI
79AQI
28th January 2025
70AQI
70AQI
29th January 2025
123AQI
123AQI
30th January 2025
117AQI
117AQI
31st January 2025
145AQI
145AQI
1st February 2025
153AQI
153AQI
2nd February 2025
101AQI
101AQI
3rd February 2025
83AQI
83AQI
4th February 2025
67AQI
67AQI
5th February 2025
57AQI
57AQI
6th February 2025
64AQI
64AQI
7th February 2025
52AQI
52AQI
8th February 2025
53AQI
53AQI
9th February 2025
64AQI
64AQI
10th February 2025
96AQI
96AQI
11th February 2025
110AQI
110AQI
12th February 2025
85AQI
85AQI
13th February 2025
83AQI
83AQI
14th February 2025
79AQI
79AQI
15th February 2025
85AQI
85AQI
16th February 2025
53AQI
53AQI
17th February 2025
73AQI
73AQI
18th February 2025
48AQI
48AQI
19th February 2025
60AQI
60AQI
20th February 2025
54AQI
54AQI
21st February 2025
65AQI
65AQI
22nd February 2025
53AQI
53AQI
23rd February 2025
56AQI
56AQI
24th February 2025
87AQI
87AQI
25th February 2025
57AQI
57AQI
26th February 2025
81AQI
81AQI
27th February 2025
105AQI
105AQI
28th February 2025
107AQI
107AQI
1st March 2025
131AQI
131AQI
2nd March 2025
86AQI
86AQI
3rd March 2025
89AQI
89AQI
4th March 2025
98AQI
98AQI
5th March 2025
75AQI
75AQI
6th March 2025
67AQI
67AQI
7th March 2025
92AQI
92AQI
8th March 2025
107AQI
107AQI
9th March 2025
125AQI
125AQI
10th March 2025
145AQI
145AQI
11th March 2025
153AQI
153AQI
12th March 2025
95AQI
95AQI
13th March 2025
134AQI
134AQI
14th March 2025
107AQI
107AQI
15th March 2025
92AQI
92AQI
16th March 2025
75AQI
75AQI
17th March 2025
58AQI
58AQI
18th March 2025
57AQI
57AQI
19th March 2025
54AQI
54AQI
20th March 2025
46AQI
46AQI
21st March 2025
50AQI
50AQI
22nd March 2025
58AQI
58AQI
23rd March 2025
164AQI
164AQI
24th March 2025
76AQI
76AQI
25th March 2025
83AQI
83AQI
26th March 2025
109AQI
109AQI
27th March 2025
76AQI
76AQI
28th March 2025
71AQI
71AQI
29th March 2025
59AQI
59AQI
30th March 2025
67AQI
67AQI
31st March 2025
62AQI
62AQI
1st April 2025
60AQI
60AQI
2nd April 2025
60AQI
60AQI
3rd April 2025
73AQI
73AQI
4th April 2025
62AQI
62AQI
5th April 2025
59AQI
59AQI
6th April 2025
73AQI
73AQI
7th April 2025
65AQI
65AQI
8th April 2025
75AQI
75AQI
9th April 2025
72AQI
72AQI
10th April 2025
75AQI
75AQI
11th April 2025
117AQI
117AQI
12th April 2025
71AQI
71AQI
13th April 2025
75AQI
75AQI
14th April 2025
64AQI
64AQI
15th April 2025
71AQI
71AQI
16th April 2025
111AQI
111AQI
17th April 2025
80AQI
80AQI
18th April 2025
75AQI
75AQI
19th April 2025
73AQI
73AQI
20th April 2025
99AQI
99AQI
21st April 2025
85AQI
85AQI
22nd April 2025
68AQI
68AQI
23rd April 2025
65AQI
65AQI
24th April 2025
57AQI
57AQI
25th April 2025
68AQI
68AQI
26th April 2025
80AQI
80AQI
27th April 2025
54AQI
54AQI
28th April 2025
68AQI
68AQI
29th April 2025
66AQI
66AQI
30th April 2025
67AQI
67AQI
1st May 2025
65AQI
65AQI
2nd May 2025
62AQI
62AQI
3rd May 2025
56AQI
56AQI
4th May 2025
71AQI
71AQI
5th May 2025
97AQI
97AQI
6th May 2025
72AQI
72AQI
7th May 2025
90AQI
90AQI
8th May 2025
98AQI
98AQI
9th May 2025
71AQI
71AQI
10th May 2025
79AQI
79AQI
11th May 2025
70AQI
70AQI
12th May 2025
79AQI
79AQI
13th May 2025
79AQI
79AQI
14th May 2025
67AQI
67AQI
15th May 2025
73AQI
73AQI
16th May 2025
90AQI
90AQI
17th May 2025
64AQI
64AQI
18th May 2025
76AQI
76AQI
19th May 2025
71AQI
71AQI
20th May 2025
86AQI
86AQI
21st May 2025
83AQI
83AQI
22nd May 2025
97AQI
97AQI
23rd May 2025
88AQI
88AQI
24th May 2025
85AQI
85AQI
25th May 2025
82AQI
82AQI
26th May 2025
75AQI
75AQI
27th May 2025
73AQI
73AQI
28th May 2025
78AQI
78AQI
29th May 2025
84AQI
84AQI
30th May 2025
95AQI
95AQI
31st May 2025
72AQI
72AQI
1st June 2025
92AQI
92AQI
2nd June 2025
50AQI
50AQI
3rd June 2025
50AQI
50AQI
4th June 2025
44AQI
44AQI
5th June 2025
53AQI
53AQI
6th June 2025
48AQI
48AQI
7th June 2025
45AQI
45AQI
8th June 2025
51AQI
51AQI
9th June 2025
54AQI
54AQI
10th June 2025
57AQI
57AQI
11th June 2025
65AQI
65AQI
12th June 2025
78AQI
78AQI
13th June 2025
75AQI
75AQI
14th June 2025
69AQI
69AQI
15th June 2025
53AQI
53AQI
16th June 2025
55AQI
55AQI
17th June 2025
61AQI
61AQI
18th June 2025
67AQI
67AQI
19th June 2025
61AQI
61AQI
20th June 2025
58AQI
58AQI
21st June 2025
50AQI
50AQI
22nd June 2025
45AQI
45AQI
23rd June 2025
53AQI
53AQI
24th June 2025
56AQI
56AQI
25th June 2025
62AQI
62AQI
26th June 2025
65AQI
65AQI
27th June 2025
68AQI
68AQI
28th June 2025
68AQI
68AQI
29th June 2025
66AQI
66AQI
30th June 2025
68AQI
68AQI
1st July 2025
64AQI
64AQI
2nd July 2025
66AQI
66AQI
3rd July 2025
61AQI
61AQI
4th July 2025
65AQI
65AQI
5th July 2025
56AQI
56AQI
6th July 2025
53AQI
53AQI
7th July 2025
59AQI
59AQI
8th July 2025
64AQI
64AQI
9th July 2025
67AQI
67AQI
10th July 2025
63AQI
63AQI
11th July 2025
73AQI
73AQI
12th July 2025
75AQI
75AQI
13th July 2025
61AQI
61AQI
14th July 2025
67AQI
67AQI
15th July 2025
69AQI
69AQI
16th July 2025
61AQI
61AQI
17th July 2025
57AQI
57AQI
18th July 2025
60AQI
60AQI
19th July 2025
69AQI
69AQI
20th July 2025
52AQI
52AQI
21st July 2025
55AQI
55AQI
22nd July 2025
62AQI
62AQI
23rd July 2025
66AQI
66AQI
24th July 2025
62AQI
62AQI
25th July 2025
58AQI
58AQI
26th July 2025
61AQI
61AQI
27th July 2025
61AQI
61AQI
28th July 2025
64AQI
64AQI
29th July 2025
55AQI
55AQI
30th July 2025
51AQI
51AQI
31st July 2025
62AQI
62AQI
1st August 2025
66AQI
66AQI
2nd August 2025
64AQI
64AQI
82AQI
76AQI
89AQI
73AQI
78AQI
60AQI
62AQI
65AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202574AQI
4
20
6
1
1
22
4
1
2
20
7
2
28
2
31
7
23
31
2
14
177
19
4
Highest AQI recorded in
March89AQI
Lowest AQI recorded in
June60AQI
202459AQI
15
1
2
10
1
29
4
27
19
12
20
7
2
15
13
3
10
15
4
1
4
25
2
90
139
11
1
Highest AQI recorded in
November71AQI
Lowest AQI recorded in
January35AQI
202330AQI
3
26
5
29
5
Highest AQI recorded in
December32AQI
Lowest AQI recorded in
November10AQI
202263AQI
15
9
4
3
10
10
9
12
8
2
4
10
3
18
13
12
12
5
10
14
2
78
82
20
5
Highest AQI recorded in
March81AQI
Lowest AQI recorded in
May48AQI
202157AQI
9
10
5
4
1
2
6
11
7
4
2
12
6
8
1
2
7
13
5
1
10
17
3
1
13
17
24
7
31
30
31
18
10
2
18
12
1
199
109
29
16
2
6
Highest AQI recorded in
March146AQI
Lowest AQI recorded in
October1AQI
202073AQI
1
8
4
2
16
3
6
9
2
1
1
21
7
1
1
23
7
5
23
3
13
14
2
11
13
6
1
14
11
2
3
13
15
3
67
153
39
4
2
Highest AQI recorded in
March89AQI
Lowest AQI recorded in
December61AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
74AQILeast Polluted Year Recorded
2023(Avg.)
30AQIHuaian Environmental Protection Bureau's annual 2025 AQI (74) shows an average percentage change of 44.3% (worsened AQI) compared to previous years: 2020 (73), 2021 (57), 2022 (63), 2023 (30), 2024 (59).
