Cotton Research Institute, Dengtalu, 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
Cotton Research Institute, Dengtalu, Henan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
18th Aug 2021
121AQILowest AQI recorded on
29th Aug 2021
33AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 62 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Cotton Research Institute, Dengtalu, Henan, China
AQI
Day
Night
.
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
9AM2nd Aug
70AQI
Avg. Lowest Time
6AM2nd Aug
60AQI
Night time
Avg. Highest Time
9PM2nd Aug
63AQI
Avg. Lowest Time
3AM3rd Aug
60AQI
In the last 24 hours,
Cotton Research Institute's AQI reached its highest point of 70 at 9 AM during the Day, while the lowest point, 60, was recorded at 3 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Cotton Research Institute, Dengtalu, Henan, 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 2025625 AMAQI
4th Jul 2025626 AMAQI
4th Jul 2025637 AMAQI
4th Jul 2025678 AMAQI
4th Jul 2025729 AMAQI
4th Jul 20256810 AMAQI
4th Jul 20256811 AMAQI
4th Jul 20256412 PMAQI
4th Jul 2025711 PMAQI
4th Jul 2025682 PMAQI
4th Jul 2025623 PMAQI
4th Jul 2025604 PMAQI
4th Jul 2025565 PMAQI
4th Jul 2025566 PMAQI
4th Jul 2025567 PMAQI
4th Jul 2025578 PMAQI
4th Jul 2025579 PMAQI
4th Jul 20256010 PMAQI
4th Jul 20255911 PMAQI
5th Jul 20255812 AMAQI
5th Jul 2025611 AMAQI
5th Jul 2025622 AMAQI
5th Jul 2025623 AMAQI
5th Jul 2025624 AMAQI
35°C28/42°C
5th Jul 2025635 AMAQI
5th Jul 2025626 AMAQI
5th Jul 2025637 AMAQI
5th Jul 2025638 AMAQI
5th Jul 2025589 AMAQI
5th Jul 20255510 AMAQI
5th Jul 20255211 AMAQI
5th Jul 20255112 PMAQI
5th Jul 2025501 PMAQI
5th Jul 2025502 PMAQI
5th Jul 2025443 PMAQI
5th Jul 2025434 PMAQI
5th Jul 2025445 PMAQI
5th Jul 2025486 PMAQI
5th Jul 2025507 PMAQI
5th Jul 2025578 PMAQI
5th Jul 2025569 PMAQI
5th Jul 20255810 PMAQI
5th Jul 20255711 PMAQI
6th Jul 20255612 AMAQI
6th Jul 2025601 AMAQI
6th Jul 2025622 AMAQI
6th Jul 2025603 AMAQI
6th Jul 2025604 AMAQI
35°C29/40°C
6th Jul 2025605 AMAQI
6th Jul 2025606 AMAQI
6th Jul 2025607 AMAQI
6th Jul 2025468 AMAQI
6th Jul 2025369 AMAQI
6th Jul 20255010 AMAQI
6th Jul 20254411 AMAQI
6th Jul 20254812 PMAQI
6th Jul 2025531 PMAQI
6th Jul 2025502 PMAQI
6th Jul 2025473 PMAQI
6th Jul 2025394 PMAQI
6th Jul 2025515 PMAQI
6th Jul 2025556 PMAQI
6th Jul 2025547 PMAQI
6th Jul 2025568 PMAQI
6th Jul 2025599 PMAQI
6th Jul 20256010 PMAQI
6th Jul 20255811 PMAQI
7th Jul 20255812 AMAQI
7th Jul 2025601 AMAQI
7th Jul 2025602 AMAQI
7th Jul 2025583 AMAQI
7th Jul 2025564 AMAQI
34°C29/40°C
7th Jul 2025575 AMAQI
7th Jul 2025576 AMAQI
7th Jul 2025567 AMAQI
7th Jul 2025578 AMAQI
7th Jul 2025599 AMAQI
7th Jul 20256110 AMAQI
7th Jul 20256311 AMAQI
7th Jul 20256312 PMAQI
7th Jul 2025731 PMAQI
7th Jul 2025702 PMAQI
7th Jul 2025663 PMAQI
7th Jul 2025664 PMAQI
7th Jul 2025645 PMAQI
7th Jul 2025596 PMAQI
7th Jul 2025607 PMAQI
7th Jul 2025588 PMAQI
7th Jul 2025599 PMAQI
7th Jul 20255810 PMAQI
7th Jul 20255811 PMAQI
8th Jul 20255812 AMAQI
8th Jul 2025581 AMAQI
8th Jul 2025572 AMAQI
8th Jul 2025583 AMAQI
8th Jul 2025594 AMAQI
31°C25/41°C
8th Jul 2025605 AMAQI
8th Jul 2025596 AMAQI
8th Jul 2025597 AMAQI
8th Jul 2025688 AMAQI
8th Jul 2025719 AMAQI
8th Jul 20257110 AMAQI
8th Jul 20256911 AMAQI
8th Jul 20256812 PMAQI
8th Jul 2025701 PMAQI
8th Jul 2025692 PMAQI
8th Jul 2025753 PMAQI
8th Jul 2025744 PMAQI
8th Jul 2025765 PMAQI
8th Jul 2025726 PMAQI
8th Jul 2025687 PMAQI
8th Jul 2025638 PMAQI
8th Jul 2025689 PMAQI
8th Jul 20256710 PMAQI
8th Jul 20256911 PMAQI
9th Jul 20256812 AMAQI
9th Jul 2025581 AMAQI
9th Jul 2025582 AMAQI
9th Jul 2025593 AMAQI
9th Jul 2025614 AMAQI
31°C25/38°C
9th Jul 2025615 AMAQI
9th Jul 2025616 AMAQI
9th Jul 2025617 AMAQI
9th Jul 2025848 AMAQI
9th Jul 2025889 AMAQI
9th Jul 20258610 AMAQI
9th Jul 20259611 AMAQI
9th Jul 20259012 PMAQI
9th Jul 2025941 PMAQI
9th Jul 2025922 PMAQI
9th Jul 2025843 PMAQI
9th Jul 2025794 PMAQI
9th Jul 2025705 PMAQI
9th Jul 2025666 PMAQI
9th Jul 2025547 PMAQI
9th Jul 2025588 PMAQI
9th Jul 2025619 PMAQI
9th Jul 20256210 PMAQI
9th Jul 20256011 PMAQI
10th Jul 20256312 AMAQI
10th Jul 2025611 AMAQI
10th Jul 2025602 AMAQI
10th Jul 2025623 AMAQI
10th Jul 2025664 AMAQI
31°C26/35°C
10th Jul 2025655 AMAQI
10th Jul 2025666 AMAQI
10th Jul 2025657 AMAQI
10th Jul 2025908 AMAQI
10th Jul 2025989 AMAQI
10th Jul 202511210 AMAQI
10th Jul 202510611 AMAQI
10th Jul 202510312 PMAQI
10th Jul 2025991 PMAQI
10th Jul 2025932 PMAQI
10th Jul 2025903 PMAQI
10th Jul 2025904 PMAQI
10th Jul 2025925 PMAQI
10th Jul 2025906 PMAQI
10th Jul 2025907 PMAQI
10th Jul 2025808 PMAQI
10th Jul 2025829 PMAQI
10th Jul 20258410 PMAQI
10th Jul 20258111 PMAQI
11th Jul 20258012 AMAQI
11th Jul 2025631 AMAQI
11th Jul 2025632 AMAQI
11th Jul 2025653 AMAQI
11th Jul 2025694 AMAQI
33°C26/39°C
11th Jul 2025695 AMAQI
11th Jul 2025686 AMAQI
11th Jul 2025697 AMAQI
11th Jul 20251078 AMAQI
11th Jul 20251169 AMAQI
11th Jul 202510710 AMAQI
11th Jul 202511311 AMAQI
11th Jul 202511212 PMAQI
11th Jul 20251101 PMAQI
11th Jul 20251042 PMAQI
11th Jul 2025943 PMAQI
11th Jul 2025874 PMAQI
11th Jul 2025885 PMAQI
11th Jul 2025906 PMAQI
11th Jul 2025867 PMAQI
11th Jul 2025768 PMAQI
11th Jul 2025759 PMAQI
11th Jul 20257610 PMAQI
11th Jul 20257911 PMAQI
12th Jul 20257812 AMAQI
12th Jul 2025721 AMAQI
12th Jul 2025682 AMAQI
12th Jul 2025713 AMAQI
12th Jul 2025754 AMAQI
32°C27/36°C
12th Jul 2025755 AMAQI
12th Jul 2025756 AMAQI
12th Jul 2025767 AMAQI
12th Jul 20251138 AMAQI
12th Jul 20251239 AMAQI
12th Jul 202511710 AMAQI
12th Jul 202510311 AMAQI
12th Jul 202510012 PMAQI
12th Jul 2025901 PMAQI
12th Jul 2025902 PMAQI
12th Jul 2025853 PMAQI
12th Jul 2025884 PMAQI
12th Jul 2025925 PMAQI
12th Jul 2025896 PMAQI
12th Jul 2025827 PMAQI
12th Jul 2025768 PMAQI
12th Jul 2025769 PMAQI
12th Jul 20257810 PMAQI
12th Jul 20257811 PMAQI
13th Jul 20257912 AMAQI
13th Jul 2025741 AMAQI
13th Jul 2025732 AMAQI
13th Jul 2025743 AMAQI
13th Jul 2025764 AMAQI
33°C28/39°C
13th Jul 2025765 AMAQI
13th Jul 2025766 AMAQI
13th Jul 2025767 AMAQI
13th Jul 2025848 AMAQI
13th Jul 2025909 AMAQI
13th Jul 20258910 AMAQI
13th Jul 20258811 AMAQI
13th Jul 20258812 PMAQI
13th Jul 2025881 PMAQI
13th Jul 2025852 PMAQI
13th Jul 2025863 PMAQI
13th Jul 2025834 PMAQI
13th Jul 2025815 PMAQI
13th Jul 2025856 PMAQI
13th Jul 2025857 PMAQI
13th Jul 2025828 PMAQI
13th Jul 2025799 PMAQI
13th Jul 20258010 PMAQI
13th Jul 20257911 PMAQI
14th Jul 20257912 AMAQI
14th Jul 2025741 AMAQI
14th Jul 2025742 AMAQI
14th Jul 2025753 AMAQI
14th Jul 2025764 AMAQI
35°C28/41°C
14th Jul 2025765 AMAQI
14th Jul 2025766 AMAQI
14th Jul 2025767 AMAQI
14th Jul 2025908 AMAQI
14th Jul 2025919 AMAQI
14th Jul 20259010 AMAQI
14th Jul 20259311 AMAQI
14th Jul 20258812 PMAQI
14th Jul 2025851 PMAQI
14th Jul 2025892 PMAQI
14th Jul 2025893 PMAQI
14th Jul 2025824 PMAQI
14th Jul 2025825 PMAQI
14th Jul 2025796 PMAQI
14th Jul 2025797 PMAQI
14th Jul 2025768 PMAQI
14th Jul 2025769 PMAQI
14th Jul 20258010 PMAQI
14th Jul 20257711 PMAQI
15th Jul 20257912 AMAQI
15th Jul 2025761 AMAQI
15th Jul 2025762 AMAQI
15th Jul 2025753 AMAQI
15th Jul 2025774 AMAQI
33°C29/40°C
15th Jul 2025785 AMAQI
15th Jul 2025786 AMAQI
15th Jul 2025777 AMAQI
15th Jul 20251028 AMAQI
15th Jul 20251129 AMAQI
15th Jul 202510210 AMAQI
15th Jul 20259611 AMAQI
15th Jul 202510012 PMAQI
15th Jul 2025981 PMAQI
15th Jul 2025862 PMAQI
15th Jul 2025773 PMAQI
15th Jul 2025794 PMAQI
15th Jul 2025855 PMAQI
15th Jul 2025856 PMAQI
15th Jul 2025837 PMAQI
15th Jul 2025818 PMAQI
15th Jul 2025839 PMAQI
15th Jul 20258010 PMAQI
15th Jul 20258411 PMAQI
16th Jul 20258412 AMAQI
16th Jul 2025751 AMAQI
16th Jul 2025762 AMAQI
16th Jul 2025783 AMAQI
16th Jul 2025824 AMAQI
36°C28/43°C
16th Jul 2025825 AMAQI
16th Jul 2025816 AMAQI
16th Jul 2025807 AMAQI
16th Jul 20251228 AMAQI
16th Jul 20251189 AMAQI
16th Jul 202511710 AMAQI
16th Jul 202511511 AMAQI
16th Jul 20259612 PMAQI
16th Jul 2025941 PMAQI
16th Jul 2025822 PMAQI
16th Jul 2025743 PMAQI
16th Jul 2025674 PMAQI
16th Jul 2025655 PMAQI
16th Jul 2025646 PMAQI
16th Jul 2025647 PMAQI
16th Jul 2025718 PMAQI
16th Jul 2025709 PMAQI
16th Jul 20257010 PMAQI
16th Jul 20257411 PMAQI
17th Jul 20257212 AMAQI
17th Jul 2025761 AMAQI
17th Jul 2025752 AMAQI
17th Jul 2025783 AMAQI
17th Jul 2025814 AMAQI
32°C26/38°C
17th Jul 2025825 AMAQI
17th Jul 2025806 AMAQI
17th Jul 2025817 AMAQI
17th Jul 2025808 AMAQI
17th Jul 2025789 AMAQI
17th Jul 20257810 AMAQI
17th Jul 20257211 AMAQI
17th Jul 20257012 PMAQI
17th Jul 2025691 PMAQI
17th Jul 2025702 PMAQI
17th Jul 2025723 PMAQI
17th Jul 2025714 PMAQI
17th Jul 2025725 PMAQI
17th Jul 2025706 PMAQI
17th Jul 2025737 PMAQI
17th Jul 2025748 PMAQI
17th Jul 2025759 PMAQI
17th Jul 20257410 PMAQI
17th Jul 20257611 PMAQI
18th Jul 20257512 AMAQI
18th Jul 2025781 AMAQI
18th Jul 2025802 AMAQI
18th Jul 2025773 AMAQI
18th Jul 2025764 AMAQI
32°C26/38°C
18th Jul 2025775 AMAQI
18th Jul 2025766 AMAQI
18th Jul 2025777 AMAQI
18th Jul 2025868 AMAQI
18th Jul 2025949 AMAQI
18th Jul 20258810 AMAQI
18th Jul 20258311 AMAQI
18th Jul 20258212 PMAQI
18th Jul 2025771 PMAQI
18th Jul 2025762 PMAQI
18th Jul 2025703 PMAQI
18th Jul 2025644 PMAQI
18th Jul 2025645 PMAQI
18th Jul 2025616 PMAQI
18th Jul 2025637 PMAQI
18th Jul 2025688 PMAQI
18th Jul 2025729 PMAQI
18th Jul 20257110 PMAQI
18th Jul 20257411 PMAQI
19th Jul 20257412 AMAQI
19th Jul 2025761 AMAQI
19th Jul 2025762 AMAQI
19th Jul 2025763 AMAQI
19th Jul 2025754 AMAQI
33°C26/39°C
19th Jul 2025755 AMAQI
19th Jul 2025766 AMAQI
19th Jul 2025767 AMAQI
19th Jul 2025898 AMAQI
19th Jul 2025879 AMAQI
19th Jul 20258610 AMAQI
19th Jul 20258011 AMAQI
19th Jul 20257712 PMAQI
19th Jul 2025701 PMAQI
19th Jul 2025702 PMAQI
19th Jul 2025713 PMAQI
19th Jul 2025744 PMAQI
19th Jul 2025735 PMAQI
19th Jul 2025756 PMAQI
19th Jul 2025777 PMAQI
19th Jul 2025778 PMAQI
19th Jul 2025779 PMAQI
19th Jul 20257810 PMAQI
19th Jul 20257811 PMAQI
20th Jul 20257812 AMAQI
20th Jul 2025771 AMAQI
20th Jul 2025762 AMAQI
20th Jul 2025753 AMAQI
20th Jul 2025754 AMAQI
33°C26/40°C
20th Jul 2025765 AMAQI
20th Jul 2025756 AMAQI
20th Jul 2025777 AMAQI
20th Jul 2025868 AMAQI
20th Jul 20251139 AMAQI
20th Jul 20259310 AMAQI
20th Jul 20259011 AMAQI
20th Jul 20259012 PMAQI
20th Jul 2025771 PMAQI
20th Jul 2025762 PMAQI
20th Jul 2025723 PMAQI
20th Jul 2025634 PMAQI
20th Jul 2025565 PMAQI
20th Jul 2025706 PMAQI
20th Jul 2025757 PMAQI
20th Jul 2025718 PMAQI
20th Jul 2025719 PMAQI
20th Jul 20256910 PMAQI
20th Jul 20257011 PMAQI
21st Jul 20257012 AMAQI
21st Jul 2025741 AMAQI
21st Jul 2025762 AMAQI
21st Jul 2025763 AMAQI
21st Jul 2025774 AMAQI
31°C26/38°C
21st Jul 2025775 AMAQI
21st Jul 2025776 AMAQI
21st Jul 2025787 AMAQI
21st Jul 2025768 AMAQI
21st Jul 2025819 AMAQI
21st Jul 20257310 AMAQI
21st Jul 20256411 AMAQI
21st Jul 20256512 PMAQI
21st Jul 2025681 PMAQI
21st Jul 2025622 PMAQI
21st Jul 2025663 PMAQI
21st Jul 2025784 PMAQI
21st Jul 2025915 PMAQI
21st Jul 2025996 PMAQI
21st Jul 2025967 PMAQI
21st Jul 2025898 PMAQI
21st Jul 2025909 PMAQI
21st Jul 20258910 PMAQI
21st Jul 20259011 PMAQI
22nd Jul 20258712 AMAQI
22nd Jul 2025751 AMAQI
22nd Jul 2025762 AMAQI
22nd Jul 2025733 AMAQI
22nd Jul 2025724 AMAQI
29°C24/36°C
22nd Jul 2025725 AMAQI
22nd Jul 2025726 AMAQI
22nd Jul 2025727 AMAQI
22nd Jul 2025928 AMAQI
22nd Jul 2025829 AMAQI
22nd Jul 20258610 AMAQI
22nd Jul 20258611 AMAQI
22nd Jul 20259112 PMAQI
22nd Jul 2025781 PMAQI
22nd Jul 2025732 PMAQI
22nd Jul 2025713 PMAQI
22nd Jul 2025644 PMAQI
22nd Jul 2025575 PMAQI
22nd Jul 2025536 PMAQI
22nd Jul 2025547 PMAQI
22nd Jul 2025638 PMAQI
22nd Jul 2025639 PMAQI
22nd Jul 20256210 PMAQI
22nd Jul 20256311 PMAQI
23rd Jul 20256212 AMAQI
23rd Jul 2025711 AMAQI
23rd Jul 2025722 AMAQI
23rd Jul 2025723 AMAQI
23rd Jul 2025744 AMAQI
30°C25/37°C
23rd Jul 2025755 AMAQI
23rd Jul 2025736 AMAQI
23rd Jul 2025747 AMAQI
23rd Jul 2025368 AMAQI
23rd Jul 2025289 AMAQI
23rd Jul 20253810 AMAQI
23rd Jul 20254811 AMAQI
23rd Jul 20254712 PMAQI
23rd Jul 2025471 PMAQI
23rd Jul 2025502 PMAQI
23rd Jul 2025543 PMAQI
23rd Jul 2025434 PMAQI
23rd Jul 2025515 PMAQI
23rd Jul 2025536 PMAQI
23rd Jul 2025577 PMAQI
23rd Jul 2025628 PMAQI
23rd Jul 2025639 PMAQI
23rd Jul 20256410 PMAQI
23rd Jul 20256411 PMAQI
24th Jul 20256412 AMAQI
24th Jul 2025661 AMAQI
24th Jul 2025682 AMAQI
24th Jul 2025683 AMAQI
24th Jul 2025674 AMAQI
30°C25/35°C
24th Jul 2025675 AMAQI
24th Jul 2025676 AMAQI
24th Jul 2025677 AMAQI
24th Jul 2025498 AMAQI
24th Jul 2025489 AMAQI
24th Jul 20255310 AMAQI
24th Jul 20256211 AMAQI
24th Jul 20256712 PMAQI
24th Jul 2025681 PMAQI
24th Jul 2025682 PMAQI
24th Jul 2025633 PMAQI
24th Jul 2025634 PMAQI
24th Jul 2025555 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025587 PMAQI
24th Jul 2025628 PMAQI
24th Jul 2025609 PMAQI
24th Jul 20256010 PMAQI
24th Jul 20255811 PMAQI
25th Jul 20255812 AMAQI
25th Jul 2025621 AMAQI
25th Jul 2025652 AMAQI
25th Jul 2025653 AMAQI
25th Jul 2025644 AMAQI
31°C25/37°C
25th Jul 2025635 AMAQI
25th Jul 2025646 AMAQI
25th Jul 2025647 AMAQI
25th Jul 2025688 AMAQI
25th Jul 2025669 AMAQI
25th Jul 20257110 AMAQI
25th Jul 20257911 AMAQI
25th Jul 20257112 PMAQI
25th Jul 2025681 PMAQI
25th Jul 2025632 PMAQI
25th Jul 2025603 PMAQI
25th Jul 2025584 PMAQI
25th Jul 2025605 PMAQI
25th Jul 2025636 PMAQI
25th Jul 2025627 PMAQI
25th Jul 2025648 PMAQI
25th Jul 2025649 PMAQI
25th Jul 20256510 PMAQI
25th Jul 20256611 PMAQI
26th Jul 20256612 AMAQI
26th Jul 2025631 AMAQI
26th Jul 2025622 AMAQI
26th Jul 2025643 AMAQI
26th Jul 2025644 AMAQI
32°C26/37°C
26th Jul 2025645 AMAQI
26th Jul 2025666 AMAQI
26th Jul 2025657 AMAQI
26th Jul 2025668 AMAQI
26th Jul 2025689 AMAQI
26th Jul 20256710 AMAQI
26th Jul 20256511 AMAQI
26th Jul 20256612 PMAQI
26th Jul 2025691 PMAQI
26th Jul 2025632 PMAQI
26th Jul 2025603 PMAQI
26th Jul 2025604 PMAQI
26th Jul 2025615 PMAQI
26th Jul 2025576 PMAQI
26th Jul 2025587 PMAQI
26th Jul 2025638 PMAQI
26th Jul 2025629 PMAQI
26th Jul 20256210 PMAQI
26th Jul 20256211 PMAQI
27th Jul 20256312 AMAQI
27th Jul 2025631 AMAQI
27th Jul 2025632 AMAQI
27th Jul 2025633 AMAQI
27th Jul 2025654 AMAQI
32°C26/39°C
27th Jul 2025645 AMAQI
27th Jul 2025646 AMAQI
27th Jul 2025647 AMAQI
27th Jul 2025678 AMAQI
27th Jul 2025669 AMAQI
27th Jul 20256310 AMAQI
27th Jul 20256311 AMAQI
27th Jul 20256412 PMAQI
27th Jul 2025631 PMAQI
27th Jul 2025602 PMAQI
27th Jul 2025563 PMAQI
27th Jul 2025584 PMAQI
27th Jul 2025565 PMAQI
27th Jul 2025546 PMAQI
27th Jul 2025607 PMAQI
27th Jul 2025618 PMAQI
27th Jul 2025629 PMAQI
27th Jul 20256210 PMAQI
27th Jul 20256211 PMAQI
28th Jul 20256312 AMAQI
28th Jul 2025621 AMAQI
28th Jul 2025622 AMAQI
28th Jul 2025623 AMAQI
28th Jul 2025634 AMAQI
33°C26/39°C
28th Jul 2025645 AMAQI
28th Jul 2025636 AMAQI
28th Jul 2025637 AMAQI
28th Jul 2025708 AMAQI
28th Jul 2025689 AMAQI
28th Jul 20256910 AMAQI
28th Jul 20256211 AMAQI
28th Jul 20256012 PMAQI
28th Jul 2025611 PMAQI
28th Jul 2025572 PMAQI
28th Jul 2025543 PMAQI
28th Jul 2025524 PMAQI
28th Jul 2025545 PMAQI
28th Jul 2025566 PMAQI
28th Jul 2025567 PMAQI
28th Jul 2025598 PMAQI
28th Jul 2025609 PMAQI
28th Jul 20256010 PMAQI
28th Jul 20255911 PMAQI
29th Jul 20256112 AMAQI
29th Jul 2025621 AMAQI
29th Jul 2025622 AMAQI
29th Jul 2025633 AMAQI
29th Jul 2025624 AMAQI
33°C27/40°C
29th Jul 2025635 AMAQI
29th Jul 2025626 AMAQI
29th Jul 2025627 AMAQI
29th Jul 2025668 AMAQI
29th Jul 2025439 AMAQI
29th Jul 20254710 AMAQI
29th Jul 20256011 AMAQI
29th Jul 20255912 PMAQI
29th Jul 2025621 PMAQI
29th Jul 2025602 PMAQI
29th Jul 2025563 PMAQI
29th Jul 2025534 PMAQI
29th Jul 2025535 PMAQI
29th Jul 2025576 PMAQI
29th Jul 2025567 PMAQI
29th Jul 2025618 PMAQI
29th Jul 2025609 PMAQI
29th Jul 20256110 PMAQI
29th Jul 20256011 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025621 AMAQI
30th Jul 2025622 AMAQI
30th Jul 2025613 AMAQI
30th Jul 2025604 AMAQI
32°C26/41°C
30th Jul 2025605 AMAQI
30th Jul 2025606 AMAQI
30th Jul 2025627 AMAQI
30th Jul 2025658 AMAQI
30th Jul 2025729 AMAQI
30th Jul 20256310 AMAQI
30th Jul 20255711 AMAQI
30th Jul 20255112 PMAQI
30th Jul 2025421 PMAQI
30th Jul 2025432 PMAQI
30th Jul 2025473 PMAQI
30th Jul 2025484 PMAQI
30th Jul 2025435 PMAQI
30th Jul 2025506 PMAQI
30th Jul 2025537 PMAQI
30th Jul 2025578 PMAQI
30th Jul 2025589 PMAQI
30th Jul 20256010 PMAQI
30th Jul 20255811 PMAQI
31st Jul 20255912 AMAQI
31st Jul 2025591 AMAQI
31st Jul 2025622 AMAQI
31st Jul 2025613 AMAQI
31st Jul 2025614 AMAQI
32°C26/40°C
31st Jul 2025615 AMAQI
31st Jul 2025616 AMAQI
31st Jul 2025617 AMAQI
31st Jul 2025618 AMAQI
31st Jul 2025619 AMAQI
31st Jul 20257310 AMAQI
31st Jul 20257111 AMAQI
31st Jul 20256812 PMAQI
31st Jul 2025571 PMAQI
31st Jul 2025542 PMAQI
31st Jul 2025493 PMAQI
31st Jul 2025504 PMAQI
31st Jul 2025515 PMAQI
31st Jul 2025556 PMAQI
31st Jul 2025557 PMAQI
31st Jul 2025558 PMAQI
31st Jul 2025599 PMAQI
31st Jul 20256010 PMAQI
31st Jul 20255811 PMAQI
1st Aug 20256012 AMAQI
1st Aug 2025621 AMAQI
1st Aug 2025592 AMAQI
1st Aug 2025613 AMAQI
1st Aug 2025594 AMAQI
32°C27/39°C
1st Aug 2025605 AMAQI
1st Aug 2025596 AMAQI
1st Aug 2025597 AMAQI
1st Aug 2025648 AMAQI
1st Aug 2025639 AMAQI
1st Aug 20256410 AMAQI
1st Aug 20256111 AMAQI
1st Aug 20255912 PMAQI
1st Aug 2025641 PMAQI
1st Aug 2025622 PMAQI
1st Aug 2025663 PMAQI
1st Aug 2025654 PMAQI
1st Aug 2025645 PMAQI
1st Aug 2025636 PMAQI
1st Aug 2025627 PMAQI
1st Aug 2025668 PMAQI
1st Aug 2025629 PMAQI
1st Aug 20256110 PMAQI
1st Aug 20256011 PMAQI
2nd Aug 20256112 AMAQI
2nd Aug 2025591 AMAQI
2nd Aug 2025592 AMAQI
2nd Aug 2025603 AMAQI
2nd Aug 2025624 AMAQI
32°C25/41°C
2nd Aug 2025615 AMAQI
2nd Aug 2025606 AMAQI
2nd Aug 2025617 AMAQI
2nd Aug 2025638 AMAQI
2nd Aug 2025709 AMAQI
2nd Aug 20256410 AMAQI
2nd Aug 20256411 AMAQI
2nd Aug 20256412 PMAQI
2nd Aug 2025681 PMAQI
2nd Aug 2025622 PMAQI
2nd Aug 2025623 PMAQI
2nd Aug 2025664 PMAQI
2nd Aug 2025665 PMAQI
2nd Aug 2025686 PMAQI
2nd Aug 2025677 PMAQI
2nd Aug 2025628 PMAQI
2nd Aug 2025639 PMAQI
2nd Aug 20256310 PMAQI
2nd Aug 20256211 PMAQI
3rd Aug 20256112 AMAQI
3rd Aug 2025601 AMAQI
3rd Aug 2025602 AMAQI
3rd Aug 2025603 AMAQI
3rd Aug 2025614 AMAQI
33°C27/41°C
3rd Aug 2025605 AMAQI
5 AM3rd Aug 2025606 AMAQI
3rd Aug 2025607 AMAQI
3rd Aug 2025688 AMAQI
3rd Aug 2025739 AMAQI
3rd Aug 20257210 AMAQI
3rd Aug 20256911 AMAQI
3rd Aug 20257512 PMAQI
12 PM3rd Aug 2025681 PMAQI
3rd Aug 2025682 PMAQI
3rd Aug 2025643 PMAQI
3rd Aug 2025654 PMAQI
3rd Aug 2025635 PMAQI
3rd Aug 2025666 PMAQI
3rd Aug 2025657 PMAQI
7 PM3rd Aug 2025648 PMAQI
3rd Aug 2025649 PMAQI
3rd Aug 20256310 PMAQI
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
8 AM - 7 PM
71AQI
12 hours / Day
360 hours / Month
Avg. Lowest Time
5 AM - 7 PM
71AQI
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. 71), while the lowest AQI was between 5 AM to 7 PM (Avg. 71).
Night time
Avg. Highest Time
12 AM - 11 PM
67AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
67AQI
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. 67), while the lowest AQI was between 12 AM to 11 PM (Avg. 67).
2025 Days Vs Air Quality
Cotton Research Institute, Dengtalu, Henan, China
2025
55%
117
34%
72
11%
23
0.4%
1
0.4%
1
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
0 DaysModerate
117 DaysPoor
72 DaysUnhealthy
23 DaysSevere
1 DaysHazardous
1 DaysUnder WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% 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
Cotton Research Institute, Dengtalu, 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
156AQI
156AQI
2nd January 2025
135AQI
135AQI
3rd January 2025
153AQI
153AQI
4th January 2025
167AQI
167AQI
5th January 2025
125AQI
125AQI
6th January 2025
98AQI
98AQI
7th January 2025
91AQI
91AQI
8th January 2025
70AQI
70AQI
9th January 2025
78AQI
78AQI
10th January 2025
103AQI
103AQI
11th January 2025
97AQI
97AQI
12th January 2025
84AQI
84AQI
13th January 2025
124AQI
124AQI
14th January 2025
103AQI
103AQI
15th January 2025
93AQI
93AQI
16th January 2025
105AQI
105AQI
17th January 2025
125AQI
125AQI
18th January 2025
144AQI
144AQI
19th January 2025
140AQI
140AQI
20th January 2025
165AQI
165AQI
21st January 2025
184AQI
184AQI
22nd January 2025
139AQI
139AQI
23rd January 2025
159AQI
159AQI
24th January 2025
159AQI
159AQI
25th January 2025
163AQI
163AQI
26th January 2025
108AQI
108AQI
27th January 2025
78AQI
78AQI
28th January 2025
98AQI
98AQI
29th January 2025
157AQI
157AQI
30th January 2025
149AQI
149AQI
31st January 2025
158AQI
158AQI
1st February 2025
158AQI
158AQI
2nd February 2025
174AQI
174AQI
3rd February 2025
136AQI
136AQI
4th February 2025
124AQI
124AQI
5th February 2025
83AQI
83AQI
6th February 2025
126AQI
126AQI
7th February 2025
59AQI
59AQI
8th February 2025
82AQI
82AQI
9th February 2025
106AQI
106AQI
10th February 2025
133AQI
133AQI
11th February 2025
151AQI
151AQI
12th February 2025
122AQI
122AQI
13th February 2025
121AQI
121AQI
14th February 2025
142AQI
142AQI
15th February 2025
128AQI
128AQI
16th February 2025
93AQI
93AQI
17th February 2025
115AQI
115AQI
18th February 2025
109AQI
109AQI
19th February 2025
109AQI
109AQI
20th February 2025
127AQI
127AQI
21st February 2025
143AQI
143AQI
22nd February 2025
124AQI
124AQI
23rd February 2025
79AQI
79AQI
24th February 2025
130AQI
130AQI
25th February 2025
111AQI
111AQI
26th February 2025
144AQI
144AQI
27th February 2025
152AQI
152AQI
28th February 2025
169AQI
169AQI
1st March 2025
185AQI
185AQI
2nd March 2025
123AQI
123AQI
3rd March 2025
101AQI
101AQI
4th March 2025
93AQI
93AQI
5th March 2025
126AQI
126AQI
6th March 2025
118AQI
118AQI
7th March 2025
143AQI
143AQI
8th March 2025
140AQI
140AQI
9th March 2025
152AQI
152AQI
10th March 2025
157AQI
157AQI
11th March 2025
160AQI
160AQI
12th March 2025
152AQI
152AQI
13th March 2025
154AQI
154AQI
14th March 2025
131AQI
131AQI
15th March 2025
121AQI
121AQI
16th March 2025
78AQI
78AQI
17th March 2025
77AQI
77AQI
18th March 2025
73AQI
73AQI
19th March 2025
90AQI
90AQI
20th March 2025
63AQI
63AQI
21st March 2025
70AQI
70AQI
22nd March 2025
77AQI
77AQI
23rd March 2025
109AQI
109AQI
24th March 2025
384AQI
384AQI
25th March 2025
219AQI
219AQI
26th March 2025
146AQI
146AQI
27th March 2025
124AQI
124AQI
28th March 2025
117AQI
117AQI
29th March 2025
85AQI
85AQI
30th March 2025
102AQI
102AQI
31st March 2025
101AQI
101AQI
1st April 2025
95AQI
95AQI
2nd April 2025
67AQI
67AQI
3rd April 2025
92AQI
92AQI
4th April 2025
127AQI
127AQI
5th April 2025
75AQI
75AQI
6th April 2025
116AQI
116AQI
7th April 2025
127AQI
127AQI
8th April 2025
117AQI
117AQI
9th April 2025
137AQI
137AQI
10th April 2025
122AQI
122AQI
11th April 2025
144AQI
144AQI
12th April 2025
138AQI
138AQI
13th April 2025
93AQI
93AQI
14th April 2025
74AQI
74AQI
15th April 2025
79AQI
79AQI
16th April 2025
121AQI
121AQI
17th April 2025
140AQI
140AQI
18th April 2025
117AQI
117AQI
19th April 2025
119AQI
119AQI
20th April 2025
114AQI
114AQI
21st April 2025
107AQI
107AQI
22nd April 2025
88AQI
88AQI
23rd April 2025
102AQI
102AQI
24th April 2025
68AQI
68AQI
25th April 2025
96AQI
96AQI
26th April 2025
91AQI
91AQI
27th April 2025
103AQI
103AQI
28th April 2025
76AQI
76AQI
29th April 2025
78AQI
78AQI
30th April 2025
107AQI
107AQI
1st May 2025
79AQI
79AQI
2nd May 2025
102AQI
102AQI
3rd May 2025
66AQI
66AQI
4th May 2025
79AQI
79AQI
5th May 2025
183AQI
183AQI
6th May 2025
99AQI
99AQI
7th May 2025
124AQI
124AQI
8th May 2025
114AQI
114AQI
9th May 2025
81AQI
81AQI
10th May 2025
77AQI
77AQI
11th May 2025
69AQI
69AQI
12th May 2025
81AQI
81AQI
13th May 2025
98AQI
98AQI
14th May 2025
85AQI
85AQI
15th May 2025
73AQI
73AQI
16th May 2025
102AQI
102AQI
17th May 2025
157AQI
157AQI
18th May 2025
89AQI
89AQI
19th May 2025
123AQI
123AQI
20th May 2025
113AQI
113AQI
21st May 2025
118AQI
118AQI
22nd May 2025
119AQI
119AQI
23rd May 2025
122AQI
122AQI
24th May 2025
87AQI
87AQI
25th May 2025
97AQI
97AQI
26th May 2025
98AQI
98AQI
27th May 2025
96AQI
96AQI
28th May 2025
97AQI
97AQI
29th May 2025
93AQI
93AQI
30th May 2025
89AQI
89AQI
31st May 2025
94AQI
94AQI
1st June 2025
112AQI
112AQI
2nd June 2025
114AQI
114AQI
3rd June 2025
75AQI
75AQI
4th June 2025
74AQI
74AQI
5th June 2025
80AQI
80AQI
6th June 2025
88AQI
88AQI
7th June 2025
98AQI
98AQI
8th June 2025
99AQI
99AQI
9th June 2025
93AQI
93AQI
10th June 2025
75AQI
75AQI
11th June 2025
87AQI
87AQI
12th June 2025
80AQI
80AQI
13th June 2025
87AQI
87AQI
14th June 2025
82AQI
82AQI
15th June 2025
61AQI
61AQI
16th June 2025
54AQI
54AQI
17th June 2025
63AQI
63AQI
18th June 2025
64AQI
64AQI
19th June 2025
67AQI
67AQI
20th June 2025
70AQI
70AQI
21st June 2025
65AQI
65AQI
22nd June 2025
55AQI
55AQI
23rd June 2025
62AQI
62AQI
24th June 2025
65AQI
65AQI
25th June 2025
76AQI
76AQI
26th June 2025
68AQI
68AQI
27th June 2025
77AQI
77AQI
28th June 2025
64AQI
64AQI
29th June 2025
66AQI
66AQI
30th June 2025
64AQI
64AQI
1st July 2025
59AQI
59AQI
2nd July 2025
60AQI
60AQI
3rd July 2025
60AQI
60AQI
4th July 2025
62AQI
62AQI
5th July 2025
56AQI
56AQI
6th July 2025
55AQI
55AQI
7th July 2025
60AQI
60AQI
8th July 2025
66AQI
66AQI
9th July 2025
69AQI
69AQI
10th July 2025
81AQI
81AQI
11th July 2025
84AQI
84AQI
12th July 2025
84AQI
84AQI
13th July 2025
81AQI
81AQI
14th July 2025
80AQI
80AQI
15th July 2025
84AQI
84AQI
16th July 2025
81AQI
81AQI
17th July 2025
75AQI
75AQI
18th July 2025
75AQI
75AQI
19th July 2025
77AQI
77AQI
20th July 2025
76AQI
76AQI
21st July 2025
80AQI
80AQI
22nd July 2025
71AQI
71AQI
23rd July 2025
59AQI
59AQI
24th July 2025
62AQI
62AQI
25th July 2025
64AQI
64AQI
26th July 2025
63AQI
63AQI
27th July 2025
62AQI
62AQI
28th July 2025
61AQI
61AQI
29th July 2025
59AQI
59AQI
30th July 2025
56AQI
56AQI
31st July 2025
59AQI
59AQI
1st August 2025
62AQI
62AQI
2nd August 2025
62AQI
62AQI
126AQI
123AQI
128AQI
104AQI
100AQI
76AQI
68AQI
62AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
2025103AQI
9
12
10
5
18
5
9
14
6
1
1
13
17
20
9
2
28
2
31
2
117
72
23
1
1
Highest AQI recorded in
March128AQI
Lowest AQI recorded in
August62AQI
2024110AQI
6
9
12
3
1
8
5
12
3
1
7
13
11
14
16
20
7
2
1
30
31
31
4
16
6
3
3
3
9
14
2
9
13
6
2
6
21
4
7
181
99
64
11
2
Highest AQI recorded in
January152AQI
Lowest AQI recorded in
July67AQI
2023117AQI
4
7
11
9
2
6
17
3
1
18
10
2
11
13
3
3
2
20
9
28
2
4
25
2
4
26
1
1
24
5
9
16
5
1
1
10
10
6
2
3
11
15
2
12
163
100
67
22
Highest AQI recorded in
February170AQI
Lowest AQI recorded in
August72AQI
2022122AQI
2
4
20
5
1
12
8
7
11
11
1
1
9
8
1
25
5
17
13
5
13
1
1
1
16
10
1
5
8
9
9
5
10
10
5
6
10
10
4
1
12
110
93
69
15
2
Highest AQI recorded in
January169AQI
Lowest AQI recorded in
July66AQI
2021121AQI
3
10
11
6
1
3
13
9
3
4
8
13
2
4
15
7
6
1
1
1
13
13
1
1
1
13
11
4
23
1
2
24
5
7
18
5
4
9
10
6
2
2
8
6
11
3
9
13
9
21
142
102
66
17
7
Highest AQI recorded in
March193AQI
Lowest AQI recorded in
July70AQI
2020117AQI
1
3
8
1
7
12
2
11
7
18
11
1
13
12
4
22
5
1
15
14
7
11
13
1
5
11
9
4
2
5
18
6
7
103
96
44
10
Highest AQI recorded in
December172AQI
Lowest AQI recorded in
August80AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2022(Avg.)
122AQILeast Polluted Year Recorded
2025(Avg.)
103AQICotton Research Institute's annual 2025 AQI (103) shows an average percentage change of -11.7% (improved AQI) compared to previous years: 2020 (117), 2021 (121), 2022 (122), 2023 (117), 2024 (110).
