Wuyuan County Welfare Institute, 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
Wuyuan County Welfare Institute, Zhangjiakou, Hebei, China
2021
2022
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
2nd Aug 2022
84AQILowest AQI recorded on
1st Aug 2021
1AQISame Day Analysis (3rd August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 61 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Wuyuan County Welfare Institute, Zhangjiakou, Hebei, China
AQI
Day
Night
.
5 AM3rd Aug 2025
7 PM
4 AM4th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
9AM3rd Aug
66AQI
Avg. Lowest Time
11AM3rd Aug
54AQI
In the last 24 hours,
Wuyuan County Welfare Institute's AQI reached its highest point of 66 at 9 AM during the Night, while the lowest point, 54, was recorded at 11 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Wuyuan County Welfare Institute, Zhangjiakou, Hebei, 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 2025605 AMAQI
5th Jul 2025636 AMAQI
5th Jul 2025637 AMAQI
5th Jul 2025548 AMAQI
5th Jul 2025519 AMAQI
5th Jul 20255410 AMAQI
5th Jul 20255111 AMAQI
5th Jul 20255512 PMAQI
5th Jul 2025541 PMAQI
5th Jul 2025492 PMAQI
5th Jul 2025513 PMAQI
5th Jul 2025534 PMAQI
5th Jul 2025525 PMAQI
5th Jul 2025506 PMAQI
5th Jul 2025527 PMAQI
5th Jul 2025558 PMAQI
5th Jul 2025569 PMAQI
5th Jul 20255810 PMAQI
5th Jul 20255811 PMAQI
6th Jul 20255912 AMAQI
6th Jul 2025631 AMAQI
6th Jul 2025632 AMAQI
6th Jul 2025623 AMAQI
6th Jul 2025604 AMAQI
18°C15/20°C
6th Jul 2025595 AMAQI
6th Jul 2025606 AMAQI
6th Jul 2025607 AMAQI
6th Jul 2025538 AMAQI
6th Jul 2025439 AMAQI
6th Jul 20253910 AMAQI
6th Jul 20253511 AMAQI
6th Jul 20254612 PMAQI
6th Jul 2025401 PMAQI
6th Jul 2025402 PMAQI
6th Jul 2025393 PMAQI
6th Jul 2025384 PMAQI
6th Jul 2025465 PMAQI
6th Jul 2025466 PMAQI
6th Jul 2025507 PMAQI
6th Jul 2025588 PMAQI
6th Jul 2025599 PMAQI
6th Jul 20256110 PMAQI
6th Jul 20256011 PMAQI
7th Jul 20255912 AMAQI
7th Jul 2025611 AMAQI
7th Jul 2025612 AMAQI
7th Jul 2025603 AMAQI
7th Jul 2025584 AMAQI
19°C13/25°C
7th Jul 2025585 AMAQI
7th Jul 2025596 AMAQI
7th Jul 2025597 AMAQI
7th Jul 2025588 AMAQI
7th Jul 2025609 AMAQI
7th Jul 20256410 AMAQI
7th Jul 20255611 AMAQI
7th Jul 20255512 PMAQI
7th Jul 2025501 PMAQI
7th Jul 2025522 PMAQI
7th Jul 2025513 PMAQI
7th Jul 2025504 PMAQI
7th Jul 2025535 PMAQI
7th Jul 2025516 PMAQI
7th Jul 2025547 PMAQI
7th Jul 2025568 PMAQI
7th Jul 2025589 PMAQI
7th Jul 20256010 PMAQI
7th Jul 20255811 PMAQI
8th Jul 20255712 AMAQI
8th Jul 2025581 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025593 AMAQI
8th Jul 2025594 AMAQI
18°C16/23°C
8th Jul 2025585 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025587 AMAQI
8th Jul 2025658 AMAQI
8th Jul 2025649 AMAQI
8th Jul 20256210 AMAQI
8th Jul 20256911 AMAQI
8th Jul 20256912 PMAQI
8th Jul 2025701 PMAQI
8th Jul 2025672 PMAQI
8th Jul 2025683 PMAQI
8th Jul 2025674 PMAQI
8th Jul 2025655 PMAQI
8th Jul 2025566 PMAQI
8th Jul 2025517 PMAQI
8th Jul 2025608 PMAQI
8th Jul 2025619 PMAQI
8th Jul 20256310 PMAQI
8th Jul 20256311 PMAQI
9th Jul 20256412 AMAQI
9th Jul 2025601 AMAQI
9th Jul 2025592 AMAQI
9th Jul 2025593 AMAQI
9th Jul 2025594 AMAQI
19°C14/26°C
9th Jul 2025595 AMAQI
9th Jul 2025586 AMAQI
9th Jul 2025607 AMAQI
9th Jul 2025718 AMAQI
9th Jul 2025699 AMAQI
9th Jul 20256010 AMAQI
9th Jul 20256411 AMAQI
9th Jul 20257112 PMAQI
9th Jul 2025701 PMAQI
9th Jul 2025682 PMAQI
9th Jul 2025813 PMAQI
9th Jul 2025714 PMAQI
9th Jul 2025595 PMAQI
9th Jul 2025636 PMAQI
9th Jul 2025647 PMAQI
9th Jul 2025638 PMAQI
9th Jul 2025649 PMAQI
9th Jul 20256410 PMAQI
9th Jul 20256411 PMAQI
10th Jul 20256212 AMAQI
10th Jul 2025601 AMAQI
10th Jul 2025612 AMAQI
10th Jul 2025623 AMAQI
10th Jul 2025624 AMAQI
19°C16/23°C
10th Jul 2025625 AMAQI
10th Jul 2025626 AMAQI
10th Jul 2025627 AMAQI
10th Jul 2025718 AMAQI
10th Jul 2025679 AMAQI
10th Jul 20257110 AMAQI
10th Jul 20257111 AMAQI
10th Jul 20257012 PMAQI
10th Jul 2025721 PMAQI
10th Jul 2025662 PMAQI
10th Jul 2025693 PMAQI
10th Jul 2025664 PMAQI
10th Jul 2025685 PMAQI
10th Jul 2025736 PMAQI
10th Jul 2025707 PMAQI
10th Jul 2025708 PMAQI
10th Jul 2025689 PMAQI
10th Jul 20256810 PMAQI
10th Jul 20257011 PMAQI
11th Jul 20256912 AMAQI
11th Jul 2025631 AMAQI
11th Jul 2025612 AMAQI
11th Jul 2025633 AMAQI
11th Jul 2025644 AMAQI
19°C17/24°C
11th Jul 2025645 AMAQI
11th Jul 2025646 AMAQI
11th Jul 2025647 AMAQI
11th Jul 2025768 AMAQI
11th Jul 2025819 AMAQI
11th Jul 20258010 AMAQI
11th Jul 20258011 AMAQI
11th Jul 20257812 PMAQI
11th Jul 2025701 PMAQI
11th Jul 2025732 PMAQI
11th Jul 2025693 PMAQI
11th Jul 2025724 PMAQI
11th Jul 2025775 PMAQI
11th Jul 2025716 PMAQI
11th Jul 2025727 PMAQI
11th Jul 2025718 PMAQI
11th Jul 2025709 PMAQI
11th Jul 20257010 PMAQI
11th Jul 20256911 PMAQI
12th Jul 20257112 AMAQI
12th Jul 2025661 AMAQI
12th Jul 2025632 AMAQI
12th Jul 2025643 AMAQI
12th Jul 2025664 AMAQI
21°C16/27°C
12th Jul 2025655 AMAQI
12th Jul 2025666 AMAQI
12th Jul 2025667 AMAQI
12th Jul 2025868 AMAQI
12th Jul 2025829 AMAQI
12th Jul 20258710 AMAQI
12th Jul 20258611 AMAQI
12th Jul 20258112 PMAQI
12th Jul 2025701 PMAQI
12th Jul 2025702 PMAQI
12th Jul 2025663 PMAQI
12th Jul 2025654 PMAQI
12th Jul 2025665 PMAQI
12th Jul 2025626 PMAQI
12th Jul 2025617 PMAQI
12th Jul 2025628 PMAQI
12th Jul 2025649 PMAQI
12th Jul 20256310 PMAQI
12th Jul 20256511 PMAQI
13th Jul 20256212 AMAQI
13th Jul 2025641 AMAQI
13th Jul 2025662 AMAQI
13th Jul 2025663 AMAQI
13th Jul 2025664 AMAQI
22°C18/26°C
13th Jul 2025685 AMAQI
13th Jul 2025686 AMAQI
13th Jul 2025687 AMAQI
13th Jul 2025628 AMAQI
13th Jul 2025499 AMAQI
13th Jul 20255110 AMAQI
13th Jul 20255311 AMAQI
13th Jul 20255412 PMAQI
13th Jul 2025551 PMAQI
13th Jul 2025552 PMAQI
13th Jul 2025543 PMAQI
13th Jul 2025554 PMAQI
13th Jul 2025525 PMAQI
13th Jul 2025536 PMAQI
13th Jul 2025577 PMAQI
13th Jul 2025628 PMAQI
13th Jul 2025649 PMAQI
13th Jul 20256610 PMAQI
13th Jul 20256411 PMAQI
14th Jul 20256412 AMAQI
14th Jul 2025641 AMAQI
14th Jul 2025642 AMAQI
14th Jul 2025633 AMAQI
14th Jul 2025624 AMAQI
20°C15/26°C
14th Jul 2025625 AMAQI
14th Jul 2025636 AMAQI
14th Jul 2025637 AMAQI
14th Jul 2025588 AMAQI
14th Jul 2025599 AMAQI
14th Jul 20254910 AMAQI
14th Jul 20255211 AMAQI
14th Jul 20255312 PMAQI
14th Jul 2025531 PMAQI
14th Jul 2025542 PMAQI
14th Jul 2025543 PMAQI
14th Jul 2025574 PMAQI
14th Jul 2025575 PMAQI
14th Jul 2025606 PMAQI
14th Jul 2025647 PMAQI
14th Jul 2025658 PMAQI
14th Jul 2025669 PMAQI
14th Jul 20256710 PMAQI
14th Jul 20256611 PMAQI
15th Jul 20256812 AMAQI
15th Jul 2025651 AMAQI
15th Jul 2025652 AMAQI
15th Jul 2025663 AMAQI
15th Jul 2025644 AMAQI
21°C16/26°C
15th Jul 2025655 AMAQI
15th Jul 2025646 AMAQI
15th Jul 2025647 AMAQI
15th Jul 2025718 AMAQI
15th Jul 2025739 AMAQI
15th Jul 20257610 AMAQI
15th Jul 20257011 AMAQI
15th Jul 20256512 PMAQI
15th Jul 2025671 PMAQI
15th Jul 2025652 PMAQI
15th Jul 2025663 PMAQI
15th Jul 2025644 PMAQI
15th Jul 2025665 PMAQI
15th Jul 2025626 PMAQI
15th Jul 2025667 PMAQI
15th Jul 2025638 PMAQI
15th Jul 2025629 PMAQI
15th Jul 20256410 PMAQI
15th Jul 20256411 PMAQI
16th Jul 20256212 AMAQI
16th Jul 2025641 AMAQI
16th Jul 2025632 AMAQI
16th Jul 2025633 AMAQI
16th Jul 2025614 AMAQI
20°C16/25°C
16th Jul 2025645 AMAQI
16th Jul 2025626 AMAQI
16th Jul 2025647 AMAQI
16th Jul 2025598 AMAQI
16th Jul 2025559 AMAQI
16th Jul 20255210 AMAQI
16th Jul 20254611 AMAQI
16th Jul 20255412 PMAQI
16th Jul 2025541 PMAQI
16th Jul 2025532 PMAQI
16th Jul 2025503 PMAQI
16th Jul 2025504 PMAQI
16th Jul 2025495 PMAQI
16th Jul 2025526 PMAQI
16th Jul 2025537 PMAQI
16th Jul 2025608 PMAQI
16th Jul 2025619 PMAQI
16th Jul 20256010 PMAQI
16th Jul 20256011 PMAQI
17th Jul 20256212 AMAQI
17th Jul 2025611 AMAQI
17th Jul 2025602 AMAQI
17th Jul 2025613 AMAQI
17th Jul 2025624 AMAQI
17°C14/20°C
17th Jul 2025605 AMAQI
17th Jul 2025626 AMAQI
17th Jul 2025627 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025529 AMAQI
17th Jul 20255010 AMAQI
17th Jul 20255211 AMAQI
17th Jul 20255612 PMAQI
17th Jul 2025551 PMAQI
17th Jul 2025562 PMAQI
17th Jul 2025543 PMAQI
17th Jul 2025534 PMAQI
17th Jul 2025525 PMAQI
17th Jul 2025546 PMAQI
17th Jul 2025587 PMAQI
17th Jul 2025598 PMAQI
17th Jul 2025589 PMAQI
17th Jul 20256010 PMAQI
17th Jul 20256011 PMAQI
18th Jul 20256012 AMAQI
18th Jul 2025581 AMAQI
18th Jul 2025582 AMAQI
18th Jul 2025593 AMAQI
18th Jul 2025614 AMAQI
19°C12/25°C
18th Jul 2025605 AMAQI
18th Jul 2025586 AMAQI
18th Jul 2025587 AMAQI
18th Jul 2025618 AMAQI
18th Jul 2025639 AMAQI
18th Jul 20256110 AMAQI
18th Jul 20255711 AMAQI
18th Jul 20255012 PMAQI
18th Jul 2025381 PMAQI
18th Jul 2025412 PMAQI
18th Jul 2025423 PMAQI
18th Jul 2025484 PMAQI
18th Jul 2025445 PMAQI
18th Jul 2025416 PMAQI
18th Jul 2025527 PMAQI
18th Jul 2025568 PMAQI
18th Jul 2025579 PMAQI
18th Jul 20256210 PMAQI
18th Jul 20256011 PMAQI
19th Jul 20256312 AMAQI
19th Jul 2025621 AMAQI
19th Jul 2025612 AMAQI
19th Jul 2025623 AMAQI
19th Jul 2025604 AMAQI
21°C16/27°C
19th Jul 2025595 AMAQI
19th Jul 2025606 AMAQI
19th Jul 2025607 AMAQI
19th Jul 2025618 AMAQI
19th Jul 2025629 AMAQI
19th Jul 20256410 AMAQI
19th Jul 20256411 AMAQI
19th Jul 20257212 PMAQI
19th Jul 2025741 PMAQI
19th Jul 2025742 PMAQI
19th Jul 2025713 PMAQI
19th Jul 2025704 PMAQI
19th Jul 2025705 PMAQI
19th Jul 2025716 PMAQI
19th Jul 2025677 PMAQI
19th Jul 2025648 PMAQI
19th Jul 2025649 PMAQI
19th Jul 20256410 PMAQI
19th Jul 20256211 PMAQI
20th Jul 20256212 AMAQI
20th Jul 2025581 AMAQI
20th Jul 2025602 AMAQI
20th Jul 2025613 AMAQI
20th Jul 2025624 AMAQI
18°C17/20°C
20th Jul 2025605 AMAQI
20th Jul 2025616 AMAQI
20th Jul 2025617 AMAQI
20th Jul 2025588 AMAQI
20th Jul 2025539 AMAQI
20th Jul 20254610 AMAQI
20th Jul 20254811 AMAQI
20th Jul 20253912 PMAQI
20th Jul 2025431 PMAQI
20th Jul 2025492 PMAQI
20th Jul 2025463 PMAQI
20th Jul 2025444 PMAQI
20th Jul 2025405 PMAQI
20th Jul 2025416 PMAQI
20th Jul 2025457 PMAQI
20th Jul 2025568 PMAQI
20th Jul 2025589 PMAQI
20th Jul 20256110 PMAQI
20th Jul 20256211 PMAQI
21st Jul 20256012 AMAQI
21st Jul 2025611 AMAQI
21st Jul 2025612 AMAQI
21st Jul 2025613 AMAQI
21st Jul 2025584 AMAQI
18°C15/22°C
21st Jul 2025585 AMAQI
21st Jul 2025596 AMAQI
21st Jul 2025597 AMAQI
21st Jul 2025568 AMAQI
21st Jul 2025549 AMAQI
21st Jul 20255710 AMAQI
21st Jul 20255411 AMAQI
21st Jul 20255112 PMAQI
21st Jul 2025511 PMAQI
21st Jul 2025502 PMAQI
21st Jul 2025473 PMAQI
21st Jul 2025464 PMAQI
21st Jul 2025475 PMAQI
21st Jul 2025426 PMAQI
21st Jul 2025487 PMAQI
21st Jul 2025578 PMAQI
21st Jul 2025589 PMAQI
21st Jul 20256010 PMAQI
21st Jul 20256311 PMAQI
22nd Jul 20256212 AMAQI
22nd Jul 2025591 AMAQI
22nd Jul 2025602 AMAQI
22nd Jul 2025583 AMAQI
22nd Jul 2025584 AMAQI
19°C14/25°C
22nd Jul 2025585 AMAQI
22nd Jul 2025586 AMAQI
22nd Jul 2025587 AMAQI
22nd Jul 2025628 AMAQI
22nd Jul 2025659 AMAQI
22nd Jul 20256410 AMAQI
22nd Jul 20256311 AMAQI
22nd Jul 20256812 PMAQI
22nd Jul 2025611 PMAQI
22nd Jul 2025582 PMAQI
22nd Jul 2025603 PMAQI
22nd Jul 2025564 PMAQI
22nd Jul 2025585 PMAQI
22nd Jul 2025656 PMAQI
22nd Jul 2025647 PMAQI
22nd Jul 2025608 PMAQI
22nd Jul 2025679 PMAQI
22nd Jul 20256510 PMAQI
22nd Jul 20256611 PMAQI
23rd Jul 20256812 AMAQI
23rd Jul 2025591 AMAQI
23rd Jul 2025582 AMAQI
23rd Jul 2025603 AMAQI
23rd Jul 2025624 AMAQI
20°C14/26°C
23rd Jul 2025625 AMAQI
23rd Jul 2025626 AMAQI
23rd Jul 2025627 AMAQI
23rd Jul 2025708 AMAQI
23rd Jul 2025749 AMAQI
23rd Jul 20257110 AMAQI
23rd Jul 20257211 AMAQI
23rd Jul 20257912 PMAQI
23rd Jul 2025771 PMAQI
23rd Jul 2025732 PMAQI
23rd Jul 2025663 PMAQI
23rd Jul 2025704 PMAQI
23rd Jul 2025625 PMAQI
23rd Jul 2025656 PMAQI
23rd Jul 2025657 PMAQI
23rd Jul 2025608 PMAQI
23rd Jul 2025629 PMAQI
23rd Jul 20256210 PMAQI
23rd Jul 20256411 PMAQI
24th Jul 20256412 AMAQI
24th Jul 2025631 AMAQI
24th Jul 2025622 AMAQI
24th Jul 2025633 AMAQI
24th Jul 2025654 AMAQI
20°C14/26°C
24th Jul 2025645 AMAQI
24th Jul 2025646 AMAQI
24th Jul 2025667 AMAQI
24th Jul 2025588 AMAQI
24th Jul 2025549 AMAQI
24th Jul 20255310 AMAQI
24th Jul 20255411 AMAQI
24th Jul 20255512 PMAQI
24th Jul 2025581 PMAQI
24th Jul 2025552 PMAQI
24th Jul 2025553 PMAQI
24th Jul 2025544 PMAQI
24th Jul 2025545 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025557 PMAQI
24th Jul 2025618 PMAQI
24th Jul 2025619 PMAQI
24th Jul 20256210 PMAQI
24th Jul 20256211 PMAQI
25th Jul 20256212 AMAQI
25th Jul 2025631 AMAQI
25th Jul 2025632 AMAQI
25th Jul 2025633 AMAQI
25th Jul 2025624 AMAQI
18°C17/19°C
25th Jul 2025625 AMAQI
25th Jul 2025626 AMAQI
25th Jul 2025627 AMAQI
25th Jul 2025528 AMAQI
25th Jul 2025519 AMAQI
25th Jul 20255410 AMAQI
25th Jul 20254211 AMAQI
25th Jul 20255412 PMAQI
25th Jul 2025541 PMAQI
25th Jul 2025502 PMAQI
25th Jul 2025443 PMAQI
25th Jul 2025504 PMAQI
25th Jul 2025615 PMAQI
25th Jul 2025596 PMAQI
25th Jul 2025607 PMAQI
25th Jul 2025688 PMAQI
25th Jul 2025679 PMAQI
25th Jul 20256410 PMAQI
25th Jul 20256111 PMAQI
26th Jul 20256012 AMAQI
26th Jul 2025551 AMAQI
26th Jul 2025552 AMAQI
26th Jul 2025533 AMAQI
26th Jul 2025554 AMAQI
18°C17/19°C
26th Jul 2025565 AMAQI
26th Jul 2025566 AMAQI
26th Jul 2025567 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025549 AMAQI
26th Jul 20255510 AMAQI
26th Jul 20256211 AMAQI
26th Jul 20255812 PMAQI
26th Jul 2025601 PMAQI
26th Jul 2025582 PMAQI
26th Jul 2025543 PMAQI
26th Jul 2025574 PMAQI
26th Jul 2025575 PMAQI
26th Jul 2025546 PMAQI
26th Jul 2025587 PMAQI
26th Jul 2025588 PMAQI
26th Jul 2025599 PMAQI
26th Jul 20255810 PMAQI
26th Jul 20255811 PMAQI
27th Jul 20255812 AMAQI
27th Jul 2025581 AMAQI
27th Jul 2025602 AMAQI
27th Jul 2025603 AMAQI
27th Jul 2025594 AMAQI
18°C18/19°C
27th Jul 2025585 AMAQI
27th Jul 2025596 AMAQI
27th Jul 2025597 AMAQI
27th Jul 2025608 AMAQI
27th Jul 2025639 AMAQI
27th Jul 20256110 AMAQI
27th Jul 20256511 AMAQI
27th Jul 20256512 PMAQI
27th Jul 2025611 PMAQI
27th Jul 2025632 PMAQI
27th Jul 2025623 PMAQI
27th Jul 2025584 PMAQI
27th Jul 2025585 PMAQI
27th Jul 2025606 PMAQI
27th Jul 2025607 PMAQI
27th Jul 2025598 PMAQI
27th Jul 2025599 PMAQI
27th Jul 20256210 PMAQI
27th Jul 20256511 PMAQI
28th Jul 20256612 AMAQI
28th Jul 2025601 AMAQI
28th Jul 2025592 AMAQI
28th Jul 2025603 AMAQI
28th Jul 2025604 AMAQI
20°C18/24°C
28th Jul 2025605 AMAQI
28th Jul 2025606 AMAQI
28th Jul 2025597 AMAQI
28th Jul 2025708 AMAQI
28th Jul 2025639 AMAQI
28th Jul 20255510 AMAQI
28th Jul 20256111 AMAQI
28th Jul 20256212 PMAQI
28th Jul 2025561 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025563 PMAQI
28th Jul 2025594 PMAQI
28th Jul 2025595 PMAQI
28th Jul 2025576 PMAQI
28th Jul 2025567 PMAQI
28th Jul 2025618 PMAQI
28th Jul 2025639 PMAQI
28th Jul 20256110 PMAQI
28th Jul 20256311 PMAQI
29th Jul 20256512 AMAQI
29th Jul 2025601 AMAQI
29th Jul 2025612 AMAQI
29th Jul 2025613 AMAQI
29th Jul 2025634 AMAQI
21°C16/26°C
29th Jul 2025635 AMAQI
29th Jul 2025636 AMAQI
29th Jul 2025637 AMAQI
29th Jul 2025488 AMAQI
29th Jul 2025359 AMAQI
29th Jul 20253610 AMAQI
29th Jul 20253611 AMAQI
29th Jul 20254012 PMAQI
29th Jul 2025561 PMAQI
29th Jul 2025542 PMAQI
29th Jul 2025473 PMAQI
29th Jul 2025424 PMAQI
29th Jul 2025475 PMAQI
29th Jul 2025466 PMAQI
29th Jul 2025487 PMAQI
29th Jul 2025588 PMAQI
29th Jul 2025569 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255711 PMAQI
30th Jul 20255712 AMAQI
30th Jul 2025621 AMAQI
30th Jul 2025622 AMAQI
30th Jul 2025613 AMAQI
30th Jul 2025604 AMAQI
18°C14/23°C
30th Jul 2025605 AMAQI
30th Jul 2025606 AMAQI
30th Jul 2025597 AMAQI
30th Jul 2025498 AMAQI
30th Jul 2025489 AMAQI
30th Jul 20254510 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253612 PMAQI
30th Jul 2025401 PMAQI
30th Jul 2025372 PMAQI
30th Jul 2025383 PMAQI
30th Jul 2025374 PMAQI
30th Jul 2025415 PMAQI
30th Jul 2025506 PMAQI
30th Jul 2025547 PMAQI
30th Jul 2025588 PMAQI
30th Jul 2025609 PMAQI
30th Jul 20256610 PMAQI
30th Jul 20256211 PMAQI
31st Jul 20256212 AMAQI
31st Jul 2025581 AMAQI
31st Jul 2025572 AMAQI
31st Jul 2025573 AMAQI
31st Jul 2025574 AMAQI
16°C11/22°C
31st Jul 2025575 AMAQI
31st Jul 2025576 AMAQI
31st Jul 2025577 AMAQI
31st Jul 2025578 AMAQI
31st Jul 2025579 AMAQI
31st Jul 20255910 AMAQI
31st Jul 20255911 AMAQI
31st Jul 20256012 PMAQI
31st Jul 2025661 PMAQI
31st Jul 2025642 PMAQI
31st Jul 2025613 PMAQI
31st Jul 2025584 PMAQI
31st Jul 2025565 PMAQI
31st Jul 2025616 PMAQI
31st Jul 2025597 PMAQI
31st Jul 2025598 PMAQI
31st Jul 2025639 PMAQI
31st Jul 20256510 PMAQI
31st Jul 20256611 PMAQI
1st Aug 20256212 AMAQI
1st Aug 2025601 AMAQI
1st Aug 2025622 AMAQI
1st Aug 2025623 AMAQI
1st Aug 2025604 AMAQI
17°C15/20°C
1st Aug 2025605 AMAQI
1st Aug 2025596 AMAQI
1st Aug 2025627 AMAQI
1st Aug 2025668 AMAQI
1st Aug 2025669 AMAQI
1st Aug 20257310 AMAQI
1st Aug 20257211 AMAQI
1st Aug 20257012 PMAQI
1st Aug 2025731 PMAQI
1st Aug 2025682 PMAQI
1st Aug 2025693 PMAQI
1st Aug 2025674 PMAQI
1st Aug 2025655 PMAQI
1st Aug 2025586 PMAQI
1st Aug 2025607 PMAQI
1st Aug 2025638 PMAQI
1st Aug 2025659 PMAQI
1st Aug 20256910 PMAQI
1st Aug 20256911 PMAQI
2nd Aug 20256212 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025582 AMAQI
2nd Aug 2025603 AMAQI
2nd Aug 2025624 AMAQI
20°C14/27°C
2nd Aug 2025615 AMAQI
2nd Aug 2025616 AMAQI
2nd Aug 2025627 AMAQI
2nd Aug 2025738 AMAQI
2nd Aug 2025689 AMAQI
2nd Aug 20257110 AMAQI
2nd Aug 20257011 AMAQI
2nd Aug 20257712 PMAQI
2nd Aug 2025701 PMAQI
2nd Aug 2025672 PMAQI
2nd Aug 2025673 PMAQI
2nd Aug 2025644 PMAQI
2nd Aug 2025655 PMAQI
2nd Aug 2025656 PMAQI
2nd Aug 2025607 PMAQI
2nd Aug 2025598 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20256510 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20256212 AMAQI
3rd Aug 2025581 AMAQI
3rd Aug 2025592 AMAQI
3rd Aug 2025623 AMAQI
3rd Aug 2025624 AMAQI
21°C16/28°C
3rd Aug 2025625 AMAQI
3rd Aug 2025646 AMAQI
3rd Aug 2025637 AMAQI
3rd Aug 2025598 AMAQI
3rd Aug 2025669 AMAQI
3rd Aug 20256010 AMAQI
3rd Aug 20255411 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025581 PMAQI
3rd Aug 2025582 PMAQI
3rd Aug 2025593 PMAQI
3rd Aug 2025554 PMAQI
3rd Aug 2025595 PMAQI
3rd Aug 2025616 PMAQI
3rd Aug 2025627 PMAQI
3rd Aug 2025628 PMAQI
3rd Aug 2025599 PMAQI
3rd Aug 20255810 PMAQI
3rd Aug 20256011 PMAQI
4th Aug 20256012 AMAQI
4th Aug 2025601 AMAQI
4th Aug 2025602 AMAQI
4th Aug 2025603 AMAQI
4th Aug 2025574 AMAQI
--°C/°C
5 AM
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
59AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
59AQI
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. 59), while the lowest AQI was between 5 AM to 7 PM (Avg. 59).
Night time
Avg. Highest Time
12 AM - 11 PM
62AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
62AQI
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. 62), while the lowest AQI was between 12 AM to 11 PM (Avg. 62).
2025 Days Vs Air Quality
Wuyuan County Welfare Institute, Zhangjiakou, Hebei, China
2025
7%
14
90%
193
3%
7
0.4%
1
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
14 DaysModerate
193 DaysPoor
7 DaysUnhealthy
1 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
Wuyuan County Welfare Institute, 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
65AQI
65AQI
2nd January 2025
59AQI
59AQI
3rd January 2025
62AQI
62AQI
4th January 2025
67AQI
67AQI
5th January 2025
71AQI
71AQI
6th January 2025
69AQI
69AQI
7th January 2025
61AQI
61AQI
8th January 2025
60AQI
60AQI
9th January 2025
58AQI
58AQI
10th January 2025
64AQI
64AQI
11th January 2025
78AQI
78AQI
12th January 2025
96AQI
96AQI
13th January 2025
80AQI
80AQI
14th January 2025
72AQI
72AQI
15th January 2025
63AQI
63AQI
16th January 2025
78AQI
78AQI
17th January 2025
76AQI
76AQI
18th January 2025
76AQI
76AQI
19th January 2025
74AQI
74AQI
20th January 2025
77AQI
77AQI
21st January 2025
70AQI
70AQI
22nd January 2025
81AQI
81AQI
23rd January 2025
107AQI
107AQI
24th January 2025
100AQI
100AQI
25th January 2025
130AQI
130AQI
26th January 2025
87AQI
87AQI
27th January 2025
72AQI
72AQI
28th January 2025
88AQI
88AQI
29th January 2025
102AQI
102AQI
30th January 2025
98AQI
98AQI
31st January 2025
108AQI
108AQI
1st February 2025
100AQI
100AQI
2nd February 2025
84AQI
84AQI
3rd February 2025
73AQI
73AQI
4th February 2025
65AQI
65AQI
5th February 2025
71AQI
71AQI
6th February 2025
71AQI
71AQI
7th February 2025
59AQI
59AQI
8th February 2025
57AQI
57AQI
9th February 2025
73AQI
73AQI
10th February 2025
76AQI
76AQI
11th February 2025
79AQI
79AQI
12th February 2025
75AQI
75AQI
13th February 2025
71AQI
71AQI
14th February 2025
56AQI
56AQI
15th February 2025
55AQI
55AQI
16th February 2025
38AQI
38AQI
17th February 2025
37AQI
37AQI
18th February 2025
36AQI
36AQI
19th February 2025
37AQI
37AQI
20th February 2025
33AQI
33AQI
21st February 2025
38AQI
38AQI
22nd February 2025
37AQI
37AQI
23rd February 2025
34AQI
34AQI
24th February 2025
49AQI
49AQI
25th February 2025
41AQI
41AQI
26th February 2025
51AQI
51AQI
27th February 2025
61AQI
61AQI
28th February 2025
59AQI
59AQI
1st March 2025
62AQI
62AQI
2nd March 2025
50AQI
50AQI
3rd March 2025
54AQI
54AQI
4th March 2025
59AQI
59AQI
5th March 2025
53AQI
53AQI
6th March 2025
42AQI
42AQI
7th March 2025
53AQI
53AQI
8th March 2025
61AQI
61AQI
9th March 2025
66AQI
66AQI
10th March 2025
74AQI
74AQI
11th March 2025
93AQI
93AQI
12th March 2025
56AQI
56AQI
13th March 2025
69AQI
69AQI
14th March 2025
89AQI
89AQI
15th March 2025
66AQI
66AQI
16th March 2025
66AQI
66AQI
17th March 2025
69AQI
69AQI
18th March 2025
57AQI
57AQI
19th March 2025
64AQI
64AQI
20th March 2025
58AQI
58AQI
21st March 2025
61AQI
61AQI
22nd March 2025
73AQI
73AQI
23rd March 2025
160AQI
160AQI
24th March 2025
88AQI
88AQI
25th March 2025
93AQI
93AQI
26th March 2025
115AQI
115AQI
27th March 2025
78AQI
78AQI
28th March 2025
73AQI
73AQI
29th March 2025
64AQI
64AQI
30th March 2025
61AQI
61AQI
31st March 2025
61AQI
61AQI
1st April 2025
62AQI
62AQI
2nd April 2025
56AQI
56AQI
3rd April 2025
85AQI
85AQI
4th April 2025
65AQI
65AQI
5th April 2025
62AQI
62AQI
6th April 2025
75AQI
75AQI
7th April 2025
65AQI
65AQI
8th April 2025
74AQI
74AQI
9th April 2025
70AQI
70AQI
10th April 2025
71AQI
71AQI
11th April 2025
95AQI
95AQI
12th April 2025
70AQI
70AQI
13th April 2025
71AQI
71AQI
14th April 2025
61AQI
61AQI
15th April 2025
67AQI
67AQI
16th April 2025
93AQI
93AQI
17th April 2025
79AQI
79AQI
18th April 2025
69AQI
69AQI
19th April 2025
67AQI
67AQI
20th April 2025
80AQI
80AQI
21st April 2025
79AQI
79AQI
22nd April 2025
66AQI
66AQI
23rd April 2025
65AQI
65AQI
24th April 2025
60AQI
60AQI
25th April 2025
65AQI
65AQI
26th April 2025
68AQI
68AQI
27th April 2025
56AQI
56AQI
28th April 2025
58AQI
58AQI
29th April 2025
61AQI
61AQI
30th April 2025
60AQI
60AQI
1st May 2025
59AQI
59AQI
2nd May 2025
64AQI
64AQI
3rd May 2025
56AQI
56AQI
4th May 2025
69AQI
69AQI
5th May 2025
102AQI
102AQI
6th May 2025
68AQI
68AQI
7th May 2025
78AQI
78AQI
8th May 2025
89AQI
89AQI
9th May 2025
77AQI
77AQI
10th May 2025
79AQI
79AQI
11th May 2025
67AQI
67AQI
12th May 2025
73AQI
73AQI
13th May 2025
81AQI
81AQI
14th May 2025
65AQI
65AQI
15th May 2025
63AQI
63AQI
16th May 2025
79AQI
79AQI
17th May 2025
59AQI
59AQI
18th May 2025
66AQI
66AQI
19th May 2025
70AQI
70AQI
20th May 2025
80AQI
80AQI
21st May 2025
77AQI
77AQI
22nd May 2025
101AQI
101AQI
23rd May 2025
86AQI
86AQI
24th May 2025
82AQI
82AQI
25th May 2025
79AQI
79AQI
26th May 2025
77AQI
77AQI
27th May 2025
76AQI
76AQI
28th May 2025
77AQI
77AQI
29th May 2025
85AQI
85AQI
30th May 2025
91AQI
91AQI
31st May 2025
72AQI
72AQI
1st June 2025
87AQI
87AQI
2nd June 2025
59AQI
59AQI
3rd June 2025
56AQI
56AQI
4th June 2025
55AQI
55AQI
5th June 2025
53AQI
53AQI
6th June 2025
50AQI
50AQI
7th June 2025
55AQI
55AQI
8th June 2025
59AQI
59AQI
9th June 2025
59AQI
59AQI
10th June 2025
59AQI
59AQI
11th June 2025
62AQI
62AQI
12th June 2025
72AQI
72AQI
13th June 2025
68AQI
68AQI
14th June 2025
65AQI
65AQI
15th June 2025
57AQI
57AQI
16th June 2025
56AQI
56AQI
17th June 2025
58AQI
58AQI
18th June 2025
62AQI
62AQI
19th June 2025
59AQI
59AQI
20th June 2025
57AQI
57AQI
21st June 2025
52AQI
52AQI
22nd June 2025
48AQI
48AQI
23rd June 2025
54AQI
54AQI
24th June 2025
62AQI
62AQI
25th June 2025
63AQI
63AQI
26th June 2025
67AQI
67AQI
27th June 2025
72AQI
72AQI
28th June 2025
67AQI
67AQI
29th June 2025
70AQI
70AQI
30th June 2025
64AQI
64AQI
1st July 2025
61AQI
61AQI
2nd July 2025
62AQI
62AQI
3rd July 2025
63AQI
63AQI
4th July 2025
62AQI
62AQI
5th July 2025
57AQI
57AQI
6th July 2025
53AQI
53AQI
7th July 2025
57AQI
57AQI
8th July 2025
61AQI
61AQI
9th July 2025
64AQI
64AQI
10th July 2025
67AQI
67AQI
11th July 2025
70AQI
70AQI
12th July 2025
68AQI
68AQI
13th July 2025
60AQI
60AQI
14th July 2025
61AQI
61AQI
15th July 2025
66AQI
66AQI
16th July 2025
58AQI
58AQI
17th July 2025
58AQI
58AQI
18th July 2025
55AQI
55AQI
19th July 2025
65AQI
65AQI
20th July 2025
54AQI
54AQI
21st July 2025
55AQI
55AQI
22nd July 2025
61AQI
61AQI
23rd July 2025
65AQI
65AQI
24th July 2025
59AQI
59AQI
25th July 2025
59AQI
59AQI
26th July 2025
57AQI
57AQI
27th July 2025
60AQI
60AQI
28th July 2025
60AQI
60AQI
29th July 2025
54AQI
54AQI
30th July 2025
53AQI
53AQI
31st July 2025
60AQI
60AQI
1st August 2025
64AQI
64AQI
2nd August 2025
64AQI
64AQI
3rd August 2025
61AQI
61AQI
79AQI
58AQI
71AQI
69AQI
76AQI
61AQI
60AQI
63AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202568AQI
27
4
10
18
2
27
1
1
30
29
2
2
28
31
3
14
193
7
1
Highest AQI recorded in
January79AQI
Lowest AQI recorded in
February58AQI
202452AQI
17
2
5
3
4
8
3
27
4
27
17
14
21
8
17
13
1
9
19
1
1
31
102
147
2
1
Highest AQI recorded in
December67AQI
Lowest AQI recorded in
January12AQI
202313AQI
3
31
34
Highest AQI recorded in
December14AQI
Lowest AQI recorded in
November5AQI
202252AQI
15
12
4
14
7
18
10
3
11
4
2
22
9
19
9
2
16
7
2
1
117
59
11
Highest AQI recorded in
January61AQI
Lowest AQI recorded in
May44AQI
202146AQI
17
6
5
1
1
1
13
13
2
6
14
7
1
1
2
10
13
2
1
17
10
3
1
18
12
28
3
31
30
31
19
10
1
22
8
1
242
89
21
2
2
5
Highest AQI recorded in
March120AQI
Lowest AQI recorded in
October1AQI
202067AQI
10
3
18
2
1
6
10
1
1
3
22
5
27
4
6
23
2
9
19
1
13
14
3
1
16
11
3
16
14
1
69
168
25
3
Highest AQI recorded in
March87AQI
Lowest AQI recorded in
December56AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
68AQILeast Polluted Year Recorded
2023(Avg.)
13AQIWuyuan County Welfare Institute's annual 2025 AQI (68) shows an average percentage change of 105.3% (worsened AQI) compared to previous years: 2020 (67), 2021 (46), 2022 (52), 2023 (13), 2024 (52).
