Biyang County Environmental Protection Bureau Automatic Station, Yakou, Henan, 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
Biyang County Environmental Protection Bureau Automatic Station, Yakou, Henan, China
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
11th Aug 2024
81AQILowest AQI recorded on
2nd Aug 2024
37AQISame Day Analysis (4th August ):
On this day, AQI across the 2 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: 4th Aug - 5th Aug 2025
Biyang County Environmental Protection Bureau Automatic Station, Yakou, Henan, China
AQI
Day
Night
.
5 AM4th Aug 2025
7 PM
4 AM5th Aug 2025
Day time
Avg. Highest Time
1PM4th Aug
77AQI
Avg. Lowest Time
7AM4th Aug
61AQI
Night time
Avg. Highest Time
9PM4th Aug
68AQI
Avg. Lowest Time
2AM5th Aug
61AQI
In the last 24 hours,
Biyang County Environmental Protection Bureau Automatic Station's AQI reached its highest point of 77 at 1 PM during the Day, while the lowest point, 61, was recorded at 2 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Biyang County Environmental Protection Bureau Automatic Station, Yakou, Henan, China
JulAug
06th - 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 - 05th05th
Day
Night
6th Jul 2025545 AMAQI
6th Jul 2025546 AMAQI
6th Jul 2025547 AMAQI
6th Jul 2025588 AMAQI
6th Jul 2025639 AMAQI
6th Jul 20256210 AMAQI
6th Jul 20255611 AMAQI
6th Jul 20255512 PMAQI
6th Jul 2025571 PMAQI
6th Jul 2025572 PMAQI
6th Jul 2025553 PMAQI
6th Jul 2025564 PMAQI
6th Jul 2025545 PMAQI
6th Jul 2025566 PMAQI
6th Jul 2025537 PMAQI
6th Jul 2025568 PMAQI
6th Jul 2025569 PMAQI
6th Jul 20255510 PMAQI
6th Jul 20255411 PMAQI
7th Jul 20255712 AMAQI
7th Jul 2025551 AMAQI
7th Jul 2025552 AMAQI
7th Jul 2025543 AMAQI
7th Jul 2025544 AMAQI
32°C27/38°C
7th Jul 2025545 AMAQI
7th Jul 2025546 AMAQI
7th Jul 2025547 AMAQI
7th Jul 2025548 AMAQI
7th Jul 2025559 AMAQI
7th Jul 20255510 AMAQI
7th Jul 20255811 AMAQI
7th Jul 20256212 PMAQI
7th Jul 2025661 PMAQI
7th Jul 2025692 PMAQI
7th Jul 2025633 PMAQI
7th Jul 2025624 PMAQI
7th Jul 2025585 PMAQI
7th Jul 2025576 PMAQI
7th Jul 2025567 PMAQI
7th Jul 2025588 PMAQI
7th Jul 2025599 PMAQI
7th Jul 20256210 PMAQI
7th Jul 20256111 PMAQI
8th Jul 20255812 AMAQI
8th Jul 2025551 AMAQI
8th Jul 2025542 AMAQI
8th Jul 2025553 AMAQI
8th Jul 2025564 AMAQI
31°C27/37°C
8th Jul 2025565 AMAQI
8th Jul 2025566 AMAQI
8th Jul 2025567 AMAQI
8th Jul 2025628 AMAQI
8th Jul 2025739 AMAQI
8th Jul 20257310 AMAQI
8th Jul 20257411 AMAQI
8th Jul 20257212 PMAQI
8th Jul 2025761 PMAQI
8th Jul 2025762 PMAQI
8th Jul 2025763 PMAQI
8th Jul 2025774 PMAQI
8th Jul 2025745 PMAQI
8th Jul 2025606 PMAQI
8th Jul 2025537 PMAQI
8th Jul 2025608 PMAQI
8th Jul 2025649 PMAQI
8th Jul 20256410 PMAQI
8th Jul 20256311 PMAQI
9th Jul 20256212 AMAQI
9th Jul 2025561 AMAQI
9th Jul 2025562 AMAQI
9th Jul 2025573 AMAQI
9th Jul 2025594 AMAQI
30°C26/36°C
9th Jul 2025585 AMAQI
9th Jul 2025586 AMAQI
9th Jul 2025587 AMAQI
9th Jul 2025708 AMAQI
9th Jul 2025699 AMAQI
9th Jul 20257310 AMAQI
9th Jul 20256411 AMAQI
9th Jul 20256212 PMAQI
9th Jul 2025581 PMAQI
9th Jul 2025532 PMAQI
9th Jul 2025483 PMAQI
9th Jul 2025474 PMAQI
9th Jul 2025455 PMAQI
9th Jul 2025476 PMAQI
9th Jul 2025527 PMAQI
9th Jul 2025608 PMAQI
9th Jul 2025619 PMAQI
9th Jul 20256010 PMAQI
9th Jul 20255711 PMAQI
10th Jul 20255712 AMAQI
10th Jul 2025581 AMAQI
10th Jul 2025582 AMAQI
10th Jul 2025583 AMAQI
10th Jul 2025604 AMAQI
29°C24/34°C
10th Jul 2025615 AMAQI
10th Jul 2025606 AMAQI
10th Jul 2025607 AMAQI
10th Jul 2025618 AMAQI
10th Jul 2025619 AMAQI
10th Jul 20255910 AMAQI
10th Jul 20256011 AMAQI
10th Jul 20255812 PMAQI
10th Jul 2025591 PMAQI
10th Jul 2025642 PMAQI
10th Jul 2025623 PMAQI
10th Jul 2025624 PMAQI
10th Jul 2025625 PMAQI
10th Jul 2025626 PMAQI
10th Jul 2025607 PMAQI
10th Jul 2025628 PMAQI
10th Jul 2025629 PMAQI
10th Jul 20256310 PMAQI
10th Jul 20256511 PMAQI
11th Jul 20256412 AMAQI
11th Jul 2025591 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025603 AMAQI
11th Jul 2025604 AMAQI
29°C25/35°C
11th Jul 2025615 AMAQI
11th Jul 2025606 AMAQI
11th Jul 2025597 AMAQI
11th Jul 2025818 AMAQI
11th Jul 2025909 AMAQI
11th Jul 20259510 AMAQI
11th Jul 20259711 AMAQI
11th Jul 20259412 PMAQI
11th Jul 2025911 PMAQI
11th Jul 2025882 PMAQI
11th Jul 2025863 PMAQI
11th Jul 2025844 PMAQI
11th Jul 2025865 PMAQI
11th Jul 2025846 PMAQI
11th Jul 2025797 PMAQI
11th Jul 2025718 PMAQI
11th Jul 2025739 PMAQI
11th Jul 20257210 PMAQI
11th Jul 20257211 PMAQI
12th Jul 20257612 AMAQI
12th Jul 2025631 AMAQI
12th Jul 2025602 AMAQI
12th Jul 2025623 AMAQI
12th Jul 2025664 AMAQI
29°C24/34°C
12th Jul 2025665 AMAQI
12th Jul 2025666 AMAQI
12th Jul 2025677 AMAQI
12th Jul 2025918 AMAQI
12th Jul 20251009 AMAQI
12th Jul 20259810 AMAQI
12th Jul 20258811 AMAQI
12th Jul 20258412 PMAQI
12th Jul 2025841 PMAQI
12th Jul 2025762 PMAQI
12th Jul 2025753 PMAQI
12th Jul 2025764 PMAQI
12th Jul 2025775 PMAQI
12th Jul 2025756 PMAQI
12th Jul 2025647 PMAQI
12th Jul 2025648 PMAQI
12th Jul 2025669 PMAQI
12th Jul 20256510 PMAQI
12th Jul 20256411 PMAQI
13th Jul 20256512 AMAQI
13th Jul 2025661 AMAQI
13th Jul 2025662 AMAQI
13th Jul 2025673 AMAQI
13th Jul 2025714 AMAQI
28°C24/32°C
13th Jul 2025715 AMAQI
13th Jul 2025726 AMAQI
13th Jul 2025717 AMAQI
13th Jul 2025728 AMAQI
13th Jul 2025699 AMAQI
13th Jul 20257010 AMAQI
13th Jul 20256511 AMAQI
13th Jul 20256512 PMAQI
13th Jul 2025641 PMAQI
13th Jul 2025612 PMAQI
13th Jul 2025613 PMAQI
13th Jul 2025584 PMAQI
13th Jul 2025565 PMAQI
13th Jul 2025546 PMAQI
13th Jul 2025587 PMAQI
13th Jul 2025628 PMAQI
13th Jul 2025629 PMAQI
13th Jul 20256310 PMAQI
13th Jul 20256411 PMAQI
14th Jul 20256412 AMAQI
14th Jul 2025661 AMAQI
14th Jul 2025682 AMAQI
14th Jul 2025683 AMAQI
14th Jul 2025724 AMAQI
30°C24/36°C
14th Jul 2025725 AMAQI
14th Jul 2025716 AMAQI
14th Jul 2025717 AMAQI
14th Jul 2025648 AMAQI
14th Jul 2025609 AMAQI
14th Jul 20256010 AMAQI
14th Jul 20256611 AMAQI
14th Jul 20256612 PMAQI
14th Jul 2025661 PMAQI
14th Jul 2025652 PMAQI
14th Jul 2025593 PMAQI
14th Jul 2025544 PMAQI
14th Jul 2025565 PMAQI
14th Jul 2025566 PMAQI
14th Jul 2025587 PMAQI
14th Jul 2025628 PMAQI
14th Jul 2025649 PMAQI
14th Jul 20256610 PMAQI
14th Jul 20256511 PMAQI
15th Jul 20256612 AMAQI
15th Jul 2025681 AMAQI
15th Jul 2025702 AMAQI
15th Jul 2025703 AMAQI
15th Jul 2025684 AMAQI
31°C26/37°C
15th Jul 2025685 AMAQI
15th Jul 2025686 AMAQI
15th Jul 2025687 AMAQI
15th Jul 2025648 AMAQI
15th Jul 2025629 AMAQI
15th Jul 20256410 AMAQI
15th Jul 20256311 AMAQI
15th Jul 20256412 PMAQI
15th Jul 2025661 PMAQI
15th Jul 2025632 PMAQI
15th Jul 2025613 PMAQI
15th Jul 2025604 PMAQI
15th Jul 2025585 PMAQI
15th Jul 2025616 PMAQI
15th Jul 2025647 PMAQI
15th Jul 2025648 PMAQI
15th Jul 2025669 PMAQI
15th Jul 20256610 PMAQI
15th Jul 20256611 PMAQI
16th Jul 20256612 AMAQI
16th Jul 2025661 AMAQI
16th Jul 2025672 AMAQI
16th Jul 2025663 AMAQI
16th Jul 2025644 AMAQI
31°C26/37°C
16th Jul 2025645 AMAQI
16th Jul 2025656 AMAQI
16th Jul 2025647 AMAQI
16th Jul 2025748 AMAQI
16th Jul 2025759 AMAQI
16th Jul 20257510 AMAQI
16th Jul 20257611 AMAQI
16th Jul 20257412 PMAQI
16th Jul 2025761 PMAQI
16th Jul 2025712 PMAQI
16th Jul 2025743 PMAQI
16th Jul 2025784 PMAQI
16th Jul 2025795 PMAQI
16th Jul 2025816 PMAQI
16th Jul 2025757 PMAQI
16th Jul 2025718 PMAQI
16th Jul 2025689 PMAQI
16th Jul 20256610 PMAQI
16th Jul 20256811 PMAQI
17th Jul 20256612 AMAQI
17th Jul 2025661 AMAQI
17th Jul 2025662 AMAQI
17th Jul 2025663 AMAQI
17th Jul 2025684 AMAQI
32°C25/40°C
17th Jul 2025685 AMAQI
17th Jul 2025686 AMAQI
17th Jul 2025687 AMAQI
17th Jul 2025688 AMAQI
17th Jul 2025699 AMAQI
17th Jul 20257110 AMAQI
17th Jul 20256911 AMAQI
17th Jul 20256512 PMAQI
17th Jul 2025661 PMAQI
17th Jul 2025632 PMAQI
17th Jul 2025643 PMAQI
17th Jul 2025654 PMAQI
17th Jul 2025625 PMAQI
17th Jul 2025626 PMAQI
17th Jul 2025647 PMAQI
17th Jul 2025658 PMAQI
17th Jul 2025649 PMAQI
17th Jul 20256510 PMAQI
17th Jul 20256511 PMAQI
18th Jul 20256612 AMAQI
18th Jul 2025671 AMAQI
18th Jul 2025672 AMAQI
18th Jul 2025673 AMAQI
18th Jul 2025664 AMAQI
31°C25/37°C
18th Jul 2025665 AMAQI
18th Jul 2025656 AMAQI
18th Jul 2025657 AMAQI
18th Jul 2025698 AMAQI
18th Jul 2025709 AMAQI
18th Jul 20256710 AMAQI
18th Jul 20256311 AMAQI
18th Jul 20256112 PMAQI
18th Jul 2025661 PMAQI
18th Jul 2025622 PMAQI
18th Jul 2025583 PMAQI
18th Jul 2025584 PMAQI
18th Jul 2025605 PMAQI
18th Jul 2025606 PMAQI
18th Jul 2025647 PMAQI
18th Jul 2025658 PMAQI
18th Jul 2025669 PMAQI
18th Jul 20256610 PMAQI
18th Jul 20256811 PMAQI
19th Jul 20256812 AMAQI
19th Jul 2025651 AMAQI
19th Jul 2025662 AMAQI
19th Jul 2025663 AMAQI
19th Jul 2025664 AMAQI
31°C26/36°C
19th Jul 2025665 AMAQI
19th Jul 2025656 AMAQI
19th Jul 2025657 AMAQI
19th Jul 2025728 AMAQI
19th Jul 2025699 AMAQI
19th Jul 20256710 AMAQI
19th Jul 20256811 AMAQI
19th Jul 20256212 PMAQI
19th Jul 2025641 PMAQI
19th Jul 2025612 PMAQI
19th Jul 2025633 PMAQI
19th Jul 2025604 PMAQI
19th Jul 2025625 PMAQI
19th Jul 2025666 PMAQI
19th Jul 2025647 PMAQI
19th Jul 2025678 PMAQI
19th Jul 2025649 PMAQI
19th Jul 20256510 PMAQI
19th Jul 20256611 PMAQI
20th Jul 20256612 AMAQI
20th Jul 2025651 AMAQI
20th Jul 2025652 AMAQI
20th Jul 2025663 AMAQI
20th Jul 2025664 AMAQI
29°C24/34°C
20th Jul 2025655 AMAQI
20th Jul 2025666 AMAQI
20th Jul 2025667 AMAQI
20th Jul 2025708 AMAQI
20th Jul 2025739 AMAQI
20th Jul 20258010 AMAQI
20th Jul 20257911 AMAQI
20th Jul 20257412 PMAQI
20th Jul 2025711 PMAQI
20th Jul 2025682 PMAQI
20th Jul 2025643 PMAQI
20th Jul 2025624 PMAQI
20th Jul 2025565 PMAQI
20th Jul 2025586 PMAQI
20th Jul 2025607 PMAQI
20th Jul 2025608 PMAQI
20th Jul 2025609 PMAQI
20th Jul 20256110 PMAQI
20th Jul 20256311 PMAQI
21st Jul 20256312 AMAQI
21st Jul 2025651 AMAQI
21st Jul 2025652 AMAQI
21st Jul 2025653 AMAQI
21st Jul 2025664 AMAQI
29°C24/37°C
21st Jul 2025655 AMAQI
21st Jul 2025656 AMAQI
21st Jul 2025657 AMAQI
21st Jul 2025668 AMAQI
21st Jul 2025679 AMAQI
21st Jul 20256610 AMAQI
21st Jul 20256611 AMAQI
21st Jul 20255812 PMAQI
21st Jul 2025561 PMAQI
21st Jul 2025552 PMAQI
21st Jul 2025553 PMAQI
21st Jul 2025564 PMAQI
21st Jul 2025585 PMAQI
21st Jul 2025586 PMAQI
21st Jul 2025597 PMAQI
21st Jul 2025608 PMAQI
21st Jul 2025639 PMAQI
21st Jul 20256410 PMAQI
21st Jul 20256711 PMAQI
22nd Jul 20256612 AMAQI
22nd Jul 2025631 AMAQI
22nd Jul 2025632 AMAQI
22nd Jul 2025623 AMAQI
22nd Jul 2025624 AMAQI
28°C24/33°C
22nd Jul 2025625 AMAQI
22nd Jul 2025626 AMAQI
22nd Jul 2025627 AMAQI
22nd Jul 2025708 AMAQI
22nd Jul 2025689 AMAQI
22nd Jul 20256410 AMAQI
22nd Jul 20256411 AMAQI
22nd Jul 20256612 PMAQI
22nd Jul 2025651 PMAQI
22nd Jul 2025602 PMAQI
22nd Jul 2025623 PMAQI
22nd Jul 2025584 PMAQI
22nd Jul 2025585 PMAQI
22nd Jul 2025576 PMAQI
22nd Jul 2025567 PMAQI
22nd Jul 2025558 PMAQI
22nd Jul 2025569 PMAQI
22nd Jul 20255610 PMAQI
22nd Jul 20255611 PMAQI
23rd Jul 20255712 AMAQI
23rd Jul 2025621 AMAQI
23rd Jul 2025632 AMAQI
23rd Jul 2025643 AMAQI
23rd Jul 2025664 AMAQI
28°C25/31°C
23rd Jul 2025645 AMAQI
23rd Jul 2025656 AMAQI
23rd Jul 2025647 AMAQI
23rd Jul 2025528 AMAQI
23rd Jul 2025449 AMAQI
23rd Jul 20254410 AMAQI
23rd Jul 20253211 AMAQI
23rd Jul 20253212 PMAQI
23rd Jul 2025321 PMAQI
23rd Jul 2025342 PMAQI
23rd Jul 2025313 PMAQI
23rd Jul 2025324 PMAQI
23rd Jul 2025335 PMAQI
23rd Jul 2025306 PMAQI
23rd Jul 2025427 PMAQI
23rd Jul 2025548 PMAQI
23rd Jul 2025549 PMAQI
23rd Jul 20255510 PMAQI
23rd Jul 20255411 PMAQI
24th Jul 20255312 AMAQI
24th Jul 2025541 AMAQI
24th Jul 2025582 AMAQI
24th Jul 2025613 AMAQI
24th Jul 2025594 AMAQI
28°C24/32°C
24th Jul 2025595 AMAQI
24th Jul 2025596 AMAQI
24th Jul 2025597 AMAQI
24th Jul 2025458 AMAQI
24th Jul 2025499 AMAQI
24th Jul 20254210 AMAQI
24th Jul 20255211 AMAQI
24th Jul 20255212 PMAQI
24th Jul 2025541 PMAQI
24th Jul 2025552 PMAQI
24th Jul 2025563 PMAQI
24th Jul 2025544 PMAQI
24th Jul 2025515 PMAQI
24th Jul 2025476 PMAQI
24th Jul 2025497 PMAQI
24th Jul 2025578 PMAQI
24th Jul 2025579 PMAQI
24th Jul 20255810 PMAQI
24th Jul 20255411 PMAQI
25th Jul 20255512 AMAQI
25th Jul 2025571 AMAQI
25th Jul 2025572 AMAQI
25th Jul 2025573 AMAQI
25th Jul 2025564 AMAQI
29°C25/34°C
25th Jul 2025555 AMAQI
25th Jul 2025556 AMAQI
25th Jul 2025557 AMAQI
25th Jul 2025548 AMAQI
25th Jul 2025549 AMAQI
25th Jul 20255410 AMAQI
25th Jul 20254811 AMAQI
25th Jul 20255212 PMAQI
25th Jul 2025581 PMAQI
25th Jul 2025552 PMAQI
25th Jul 2025543 PMAQI
25th Jul 2025544 PMAQI
25th Jul 2025485 PMAQI
25th Jul 2025486 PMAQI
25th Jul 2025527 PMAQI
25th Jul 2025548 PMAQI
25th Jul 2025569 PMAQI
25th Jul 20255510 PMAQI
25th Jul 20255711 PMAQI
26th Jul 20255612 AMAQI
26th Jul 2025551 AMAQI
26th Jul 2025552 AMAQI
26th Jul 2025553 AMAQI
26th Jul 2025544 AMAQI
30°C26/36°C
26th Jul 2025555 AMAQI
26th Jul 2025556 AMAQI
26th Jul 2025557 AMAQI
26th Jul 2025578 AMAQI
26th Jul 2025589 AMAQI
26th Jul 20256010 AMAQI
26th Jul 20255911 AMAQI
26th Jul 20255712 PMAQI
26th Jul 2025581 PMAQI
26th Jul 2025592 PMAQI
26th Jul 2025593 PMAQI
26th Jul 2025574 PMAQI
26th Jul 2025585 PMAQI
26th Jul 2025556 PMAQI
26th Jul 2025567 PMAQI
26th Jul 2025568 PMAQI
26th Jul 2025569 PMAQI
26th Jul 20255610 PMAQI
26th Jul 20255611 PMAQI
27th Jul 20255512 AMAQI
27th Jul 2025561 AMAQI
27th Jul 2025562 AMAQI
27th Jul 2025553 AMAQI
27th Jul 2025554 AMAQI
29°C24/35°C
27th Jul 2025555 AMAQI
27th Jul 2025556 AMAQI
27th Jul 2025557 AMAQI
27th Jul 2025588 AMAQI
27th Jul 2025599 AMAQI
27th Jul 20255610 AMAQI
27th Jul 20255411 AMAQI
27th Jul 20255312 PMAQI
27th Jul 2025511 PMAQI
27th Jul 2025482 PMAQI
27th Jul 2025483 PMAQI
27th Jul 2025454 PMAQI
27th Jul 2025445 PMAQI
27th Jul 2025446 PMAQI
27th Jul 2025487 PMAQI
27th Jul 2025548 PMAQI
27th Jul 2025549 PMAQI
27th Jul 20255410 PMAQI
27th Jul 20255411 PMAQI
28th Jul 20255412 AMAQI
28th Jul 2025561 AMAQI
28th Jul 2025562 AMAQI
28th Jul 2025563 AMAQI
28th Jul 2025564 AMAQI
29°C25/34°C
28th Jul 2025565 AMAQI
28th Jul 2025566 AMAQI
28th Jul 2025557 AMAQI
28th Jul 2025598 AMAQI
28th Jul 2025649 AMAQI
28th Jul 20256510 AMAQI
28th Jul 20256411 AMAQI
28th Jul 20256212 PMAQI
28th Jul 2025561 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025503 PMAQI
28th Jul 2025504 PMAQI
28th Jul 2025505 PMAQI
28th Jul 2025426 PMAQI
28th Jul 2025467 PMAQI
28th Jul 2025538 PMAQI
28th Jul 2025509 PMAQI
28th Jul 20255210 PMAQI
28th Jul 20255311 PMAQI
29th Jul 20255212 AMAQI
29th Jul 2025541 AMAQI
29th Jul 2025562 AMAQI
29th Jul 2025563 AMAQI
29th Jul 2025584 AMAQI
29°C24/35°C
29th Jul 2025585 AMAQI
29th Jul 2025576 AMAQI
29th Jul 2025587 AMAQI
29th Jul 2025608 AMAQI
29th Jul 2025589 AMAQI
29th Jul 20255810 AMAQI
29th Jul 20255311 AMAQI
29th Jul 20255212 PMAQI
29th Jul 2025551 PMAQI
29th Jul 2025532 PMAQI
29th Jul 2025533 PMAQI
29th Jul 2025434 PMAQI
29th Jul 2025445 PMAQI
29th Jul 2025456 PMAQI
29th Jul 2025487 PMAQI
29th Jul 2025548 PMAQI
29th Jul 2025599 PMAQI
29th Jul 20255710 PMAQI
29th Jul 20255811 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025581 AMAQI
30th Jul 2025572 AMAQI
30th Jul 2025583 AMAQI
30th Jul 2025584 AMAQI
30°C26/35°C
30th Jul 2025585 AMAQI
30th Jul 2025586 AMAQI
30th Jul 2025587 AMAQI
30th Jul 2025628 AMAQI
30th Jul 2025649 AMAQI
30th Jul 20256410 AMAQI
30th Jul 20256311 AMAQI
30th Jul 20256212 PMAQI
30th Jul 2025591 PMAQI
30th Jul 2025572 PMAQI
30th Jul 2025563 PMAQI
30th Jul 2025554 PMAQI
30th Jul 2025555 PMAQI
30th Jul 2025586 PMAQI
30th Jul 2025587 PMAQI
30th Jul 2025578 PMAQI
30th Jul 2025569 PMAQI
30th Jul 20255610 PMAQI
30th Jul 20255611 PMAQI
31st Jul 20255812 AMAQI
31st Jul 2025581 AMAQI
31st Jul 2025582 AMAQI
31st Jul 2025583 AMAQI
31st Jul 2025584 AMAQI
29°C26/35°C
31st Jul 2025585 AMAQI
31st Jul 2025586 AMAQI
31st Jul 2025587 AMAQI
31st Jul 2025588 AMAQI
31st Jul 2025589 AMAQI
31st Jul 20256810 AMAQI
31st Jul 20256711 AMAQI
31st Jul 20257012 PMAQI
31st Jul 2025701 PMAQI
31st Jul 2025672 PMAQI
31st Jul 2025623 PMAQI
31st Jul 2025624 PMAQI
31st Jul 2025645 PMAQI
31st Jul 2025666 PMAQI
31st Jul 2025617 PMAQI
31st Jul 2025598 PMAQI
31st Jul 2025619 PMAQI
31st Jul 20255910 PMAQI
31st Jul 20256111 PMAQI
1st Aug 20256212 AMAQI
1st Aug 2025571 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025573 AMAQI
1st Aug 2025584 AMAQI
29°C23/34°C
1st Aug 2025585 AMAQI
1st Aug 2025586 AMAQI
1st Aug 2025577 AMAQI
1st Aug 2025688 AMAQI
1st Aug 2025609 AMAQI
1st Aug 20256910 AMAQI
1st Aug 20256511 AMAQI
1st Aug 20256612 PMAQI
1st Aug 2025661 PMAQI
1st Aug 2025642 PMAQI
1st Aug 2025623 PMAQI
1st Aug 2025624 PMAQI
1st Aug 2025595 PMAQI
1st Aug 2025626 PMAQI
1st Aug 2025597 PMAQI
1st Aug 2025608 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256110 PMAQI
1st Aug 20256411 PMAQI
2nd Aug 20256212 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025572 AMAQI
2nd Aug 2025593 AMAQI
2nd Aug 2025604 AMAQI
30°C25/34°C
2nd Aug 2025605 AMAQI
2nd Aug 2025606 AMAQI
2nd Aug 2025597 AMAQI
2nd Aug 2025738 AMAQI
2nd Aug 2025729 AMAQI
2nd Aug 20256510 AMAQI
2nd Aug 20256811 AMAQI
2nd Aug 20256012 PMAQI
2nd Aug 2025661 PMAQI
2nd Aug 2025602 PMAQI
2nd Aug 2025583 PMAQI
2nd Aug 2025474 PMAQI
2nd Aug 2025415 PMAQI
2nd Aug 2025466 PMAQI
2nd Aug 2025537 PMAQI
2nd Aug 2025568 PMAQI
2nd Aug 2025599 PMAQI
2nd Aug 20256010 PMAQI
2nd Aug 20256111 PMAQI
3rd Aug 20256012 AMAQI
3rd Aug 2025581 AMAQI
3rd Aug 2025592 AMAQI
3rd Aug 2025603 AMAQI
3rd Aug 2025614 AMAQI
30°C25/35°C
3rd Aug 2025615 AMAQI
3rd Aug 2025616 AMAQI
3rd Aug 2025617 AMAQI
3rd Aug 2025628 AMAQI
3rd Aug 2025619 AMAQI
3rd Aug 20256610 AMAQI
3rd Aug 20256811 AMAQI
3rd Aug 20256212 PMAQI
3rd Aug 2025621 PMAQI
3rd Aug 2025572 PMAQI
3rd Aug 2025583 PMAQI
3rd Aug 2025574 PMAQI
3rd Aug 2025565 PMAQI
3rd Aug 2025566 PMAQI
3rd Aug 2025587 PMAQI
3rd Aug 2025618 PMAQI
3rd Aug 2025629 PMAQI
3rd Aug 20256310 PMAQI
3rd Aug 20256411 PMAQI
4th Aug 20256112 AMAQI
4th Aug 2025601 AMAQI
4th Aug 2025602 AMAQI
4th Aug 2025613 AMAQI
4th Aug 2025624 AMAQI
32°C26/37°C
4th Aug 2025615 AMAQI
4th Aug 2025616 AMAQI
4th Aug 2025617 AMAQI
4th Aug 2025658 AMAQI
4th Aug 2025709 AMAQI
4th Aug 20257510 AMAQI
4th Aug 20257211 AMAQI
4th Aug 20257512 PMAQI
4th Aug 2025771 PMAQI
4th Aug 2025742 PMAQI
4th Aug 2025713 PMAQI
4th Aug 2025734 PMAQI
4th Aug 2025705 PMAQI
4th Aug 2025686 PMAQI
4th Aug 2025687 PMAQI
4th Aug 2025668 PMAQI
4th Aug 2025689 PMAQI
4th Aug 20256610 PMAQI
4th Aug 20256711 PMAQI
5th Aug 20256412 AMAQI
5th Aug 2025611 AMAQI
5th Aug 2025612 AMAQI
5th Aug 2025623 AMAQI
5th Aug 2025644 AMAQI
32°C27/37°C
5th Aug 2025645 AMAQI
5 AM5th Aug 2025636 AMAQI
5th Aug 2025647 AMAQI
5th Aug 2025738 AMAQI
5th Aug 2025699 AMAQI
5th Aug 20257210 AMAQI
5th Aug 20257911 AMAQI
5th Aug 20257512 PMAQI
12 PM5th Aug 2025771 PMAQI
5th Aug 2025732 PMAQI
5th Aug 2025733 PMAQI
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
8 AM - 7 PM
62AQI
12 hours / Day
360 hours / Month
Avg. Lowest Time
5 AM - 7 PM
62AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 7 PM (Avg. 62), while the lowest AQI was between 5 AM to 7 PM (Avg. 62).
Night time
Avg. Highest Time
12 AM - 11 PM
61AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
61AQI
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. 61), while the lowest AQI was between 12 AM to 11 PM (Avg. 61).
2025 Days Vs Air Quality
Biyang County Environmental Protection Bureau Automatic Station, Yakou, Henan, China
2025
2%
4
54%
116
34%
73
10%
22
0.4%
1
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
4 DaysModerate
116 DaysPoor
73 DaysUnhealthy
22 DaysSevere
1 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 2%
Health Risk Level:
Extreme
In 2025, 2% of 217 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
Biyang County Environmental Protection Bureau Automatic Station, Yakou, Henan, 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
167AQI
167AQI
2nd January 2025
179AQI
179AQI
3rd January 2025
174AQI
174AQI
4th January 2025
192AQI
192AQI
5th January 2025
150AQI
150AQI
6th January 2025
140AQI
140AQI
7th January 2025
128AQI
128AQI
8th January 2025
122AQI
122AQI
9th January 2025
103AQI
103AQI
10th January 2025
126AQI
126AQI
11th January 2025
119AQI
119AQI
12th January 2025
123AQI
123AQI
13th January 2025
146AQI
146AQI
14th January 2025
123AQI
123AQI
15th January 2025
98AQI
98AQI
16th January 2025
111AQI
111AQI
17th January 2025
121AQI
121AQI
18th January 2025
148AQI
148AQI
19th January 2025
154AQI
154AQI
20th January 2025
160AQI
160AQI
21st January 2025
170AQI
170AQI
22nd January 2025
189AQI
189AQI
23rd January 2025
166AQI
166AQI
24th January 2025
138AQI
138AQI
25th January 2025
128AQI
128AQI
26th January 2025
98AQI
98AQI
27th January 2025
90AQI
90AQI
28th January 2025
118AQI
118AQI
29th January 2025
170AQI
170AQI
30th January 2025
153AQI
153AQI
31st January 2025
168AQI
168AQI
1st February 2025
157AQI
157AQI
2nd February 2025
161AQI
161AQI
3rd February 2025
151AQI
151AQI
4th February 2025
135AQI
135AQI
5th February 2025
102AQI
102AQI
6th February 2025
97AQI
97AQI
7th February 2025
87AQI
87AQI
8th February 2025
77AQI
77AQI
9th February 2025
95AQI
95AQI
10th February 2025
118AQI
118AQI
11th February 2025
134AQI
134AQI
12th February 2025
113AQI
113AQI
13th February 2025
125AQI
125AQI
14th February 2025
131AQI
131AQI
15th February 2025
135AQI
135AQI
16th February 2025
122AQI
122AQI
17th February 2025
116AQI
116AQI
18th February 2025
122AQI
122AQI
19th February 2025
146AQI
146AQI
20th February 2025
146AQI
146AQI
21st February 2025
157AQI
157AQI
22nd February 2025
158AQI
158AQI
23rd February 2025
165AQI
165AQI
24th February 2025
154AQI
154AQI
25th February 2025
147AQI
147AQI
26th February 2025
153AQI
153AQI
27th February 2025
148AQI
148AQI
28th February 2025
159AQI
159AQI
1st March 2025
147AQI
147AQI
2nd March 2025
98AQI
98AQI
3rd March 2025
91AQI
91AQI
4th March 2025
91AQI
91AQI
5th March 2025
110AQI
110AQI
6th March 2025
129AQI
129AQI
7th March 2025
135AQI
135AQI
8th March 2025
141AQI
141AQI
9th March 2025
150AQI
150AQI
10th March 2025
142AQI
142AQI
11th March 2025
145AQI
145AQI
12th March 2025
144AQI
144AQI
13th March 2025
155AQI
155AQI
14th March 2025
107AQI
107AQI
15th March 2025
112AQI
112AQI
16th March 2025
86AQI
86AQI
17th March 2025
84AQI
84AQI
18th March 2025
79AQI
79AQI
19th March 2025
79AQI
79AQI
20th March 2025
72AQI
72AQI
21st March 2025
79AQI
79AQI
22nd March 2025
86AQI
86AQI
23rd March 2025
97AQI
97AQI
24th March 2025
97AQI
97AQI
25th March 2025
95AQI
95AQI
26th March 2025
116AQI
116AQI
27th March 2025
114AQI
114AQI
28th March 2025
102AQI
102AQI
29th March 2025
98AQI
98AQI
30th March 2025
100AQI
100AQI
31st March 2025
100AQI
100AQI
1st April 2025
105AQI
105AQI
2nd April 2025
90AQI
90AQI
3rd April 2025
103AQI
103AQI
4th April 2025
124AQI
124AQI
5th April 2025
99AQI
99AQI
6th April 2025
112AQI
112AQI
7th April 2025
105AQI
105AQI
8th April 2025
115AQI
115AQI
9th April 2025
121AQI
121AQI
10th April 2025
114AQI
114AQI
11th April 2025
112AQI
112AQI
12th April 2025
202AQI
202AQI
13th April 2025
134AQI
134AQI
14th April 2025
99AQI
99AQI
15th April 2025
98AQI
98AQI
16th April 2025
101AQI
101AQI
17th April 2025
109AQI
109AQI
18th April 2025
108AQI
108AQI
19th April 2025
98AQI
98AQI
20th April 2025
98AQI
98AQI
21st April 2025
91AQI
91AQI
22nd April 2025
102AQI
102AQI
23rd April 2025
116AQI
116AQI
24th April 2025
92AQI
92AQI
25th April 2025
101AQI
101AQI
26th April 2025
92AQI
92AQI
27th April 2025
91AQI
91AQI
28th April 2025
76AQI
76AQI
29th April 2025
82AQI
82AQI
30th April 2025
78AQI
78AQI
1st May 2025
84AQI
84AQI
2nd May 2025
89AQI
89AQI
3rd May 2025
80AQI
80AQI
4th May 2025
81AQI
81AQI
5th May 2025
82AQI
82AQI
6th May 2025
132AQI
132AQI
7th May 2025
136AQI
136AQI
8th May 2025
117AQI
117AQI
9th May 2025
112AQI
112AQI
10th May 2025
93AQI
93AQI
11th May 2025
88AQI
88AQI
12th May 2025
89AQI
89AQI
13th May 2025
97AQI
97AQI
14th May 2025
86AQI
86AQI
15th May 2025
98AQI
98AQI
16th May 2025
93AQI
93AQI
17th May 2025
123AQI
123AQI
18th May 2025
113AQI
113AQI
19th May 2025
129AQI
129AQI
20th May 2025
114AQI
114AQI
21st May 2025
107AQI
107AQI
22nd May 2025
97AQI
97AQI
23rd May 2025
112AQI
112AQI
24th May 2025
99AQI
99AQI
25th May 2025
103AQI
103AQI
26th May 2025
98AQI
98AQI
27th May 2025
109AQI
109AQI
28th May 2025
99AQI
99AQI
29th May 2025
98AQI
98AQI
30th May 2025
87AQI
87AQI
31st May 2025
72AQI
72AQI
1st June 2025
77AQI
77AQI
2nd June 2025
74AQI
74AQI
3rd June 2025
80AQI
80AQI
4th June 2025
81AQI
81AQI
5th June 2025
77AQI
77AQI
6th June 2025
79AQI
79AQI
7th June 2025
72AQI
72AQI
8th June 2025
68AQI
68AQI
9th June 2025
70AQI
70AQI
10th June 2025
71AQI
71AQI
11th June 2025
72AQI
72AQI
12th June 2025
76AQI
76AQI
13th June 2025
73AQI
73AQI
14th June 2025
68AQI
68AQI
15th June 2025
63AQI
63AQI
16th June 2025
68AQI
68AQI
17th June 2025
68AQI
68AQI
18th June 2025
58AQI
58AQI
19th June 2025
50AQI
50AQI
20th June 2025
57AQI
57AQI
21st June 2025
59AQI
59AQI
22nd June 2025
52AQI
52AQI
23rd June 2025
57AQI
57AQI
24th June 2025
62AQI
62AQI
25th June 2025
62AQI
62AQI
26th June 2025
56AQI
56AQI
27th June 2025
55AQI
55AQI
28th June 2025
53AQI
53AQI
29th June 2025
52AQI
52AQI
30th June 2025
53AQI
53AQI
1st July 2025
51AQI
51AQI
2nd July 2025
45AQI
45AQI
3rd July 2025
46AQI
46AQI
4th July 2025
53AQI
53AQI
5th July 2025
54AQI
54AQI
6th July 2025
55AQI
55AQI
7th July 2025
58AQI
58AQI
8th July 2025
63AQI
63AQI
9th July 2025
58AQI
58AQI
10th July 2025
61AQI
61AQI
11th July 2025
74AQI
74AQI
12th July 2025
72AQI
72AQI
13th July 2025
64AQI
64AQI
14th July 2025
64AQI
64AQI
15th July 2025
65AQI
65AQI
16th July 2025
71AQI
71AQI
17th July 2025
66AQI
66AQI
18th July 2025
65AQI
65AQI
19th July 2025
65AQI
65AQI
20th July 2025
65AQI
65AQI
21st July 2025
62AQI
62AQI
22nd July 2025
61AQI
61AQI
23rd July 2025
50AQI
50AQI
24th July 2025
54AQI
54AQI
25th July 2025
54AQI
54AQI
26th July 2025
56AQI
56AQI
27th July 2025
53AQI
53AQI
28th July 2025
54AQI
54AQI
29th July 2025
54AQI
54AQI
30th July 2025
58AQI
58AQI
31st July 2025
61AQI
61AQI
1st August 2025
61AQI
61AQI
2nd August 2025
59AQI
59AQI
3rd August 2025
61AQI
61AQI
4th August 2025
64AQI
64AQI
141AQI
133AQI
109AQI
106AQI
101AQI
65AQI
59AQI
61AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
2025101AQI
3
16
12
4
15
9
16
14
1
13
16
1
19
12
1
29
3
28
4
4
116
73
22
1
Highest AQI recorded in
January141AQI
Lowest AQI recorded in
July59AQI
202495AQI
7
9
1
1
1
1
1
12
30
3
28
7
24
3
19
7
6
18
7
8
13
9
25
6
13
137
74
22
Highest AQI recorded in
December137AQI
Lowest AQI recorded in
July55AQI
202388AQI
3
31
34
Highest AQI recorded in
November89AQI
Lowest AQI recorded in
December88AQI
2021150AQI
11
13
5
1
3
11
11
1
3
4
25
24
5
1
Highest AQI recorded in
January166AQI
Lowest AQI recorded in
March104AQI
202095AQI
4
6
9
20
2
2
20
3
18
12
1
13
16
1
4
15
12
15
81
48
14
Highest AQI recorded in
December140AQI
Lowest AQI recorded in
July54AQI
Most & Least Polluted Years Over the Last 5 Years
Most Polluted Year Recorded
2021(Avg.)
150AQILeast Polluted Year Recorded
2023(Avg.)
88AQIBiyang County Environmental Protection Bureau Automatic Station's annual 2025 AQI (101) shows an average percentage change of -1.6% (improved AQI) compared to previous years: 2020 (95), 2021 (150), 2023 (88), 2024 (95).
