Railway Design Institute, Lanzhou, Gansu, 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
Railway Design Institute, Lanzhou, Gansu, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
16th Aug 2023
171AQILowest AQI recorded on
8th Aug 2023
49AQISame Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 64 of Moderate air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Railway Design Institute, Lanzhou, Gansu, China
AQI
Day
Night
.
6 AM1st Aug 2025
8 PM
5 AM2nd Aug 2025
Day time
Avg. Highest Time
11AM1st Aug
75AQI
Avg. Lowest Time
6PM1st Aug
59AQI
Night time
Avg. Highest Time
10PM1st Aug
66AQI
Avg. Lowest Time
3AM2nd Aug
60AQI
In the last 24 hours,
Railway Design Institute's AQI reached its highest point of 75 at 11 AM during the Day, while the lowest point, 59, was recorded at 6 PM during the Day between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Railway Design Institute, Lanzhou, Gansu, China
JulAug
03rd - 04th04th - 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
Day
Night
3rd Jul 2025636 AMAQI
3rd Jul 2025637 AMAQI
3rd Jul 2025668 AMAQI
3rd Jul 2025759 AMAQI
3rd Jul 20258010 AMAQI
3rd Jul 20258011 AMAQI
3rd Jul 20258012 PMAQI
3rd Jul 2025801 PMAQI
3rd Jul 2025802 PMAQI
3rd Jul 2025803 PMAQI
3rd Jul 2025804 PMAQI
3rd Jul 2025665 PMAQI
3rd Jul 2025666 PMAQI
3rd Jul 2025667 PMAQI
3rd Jul 2025648 PMAQI
3rd Jul 2025649 PMAQI
3rd Jul 20256410 PMAQI
3rd Jul 20256411 PMAQI
4th Jul 20256512 AMAQI
4th Jul 2025641 AMAQI
4th Jul 2025642 AMAQI
4th Jul 2025633 AMAQI
4th Jul 2025664 AMAQI
4th Jul 2025665 AMAQI
25°C21/30°C
4th Jul 2025656 AMAQI
4th Jul 2025657 AMAQI
4th Jul 2025758 AMAQI
4th Jul 2025679 AMAQI
4th Jul 20256610 AMAQI
4th Jul 20256011 AMAQI
4th Jul 20256612 PMAQI
4th Jul 2025561 PMAQI
4th Jul 2025562 PMAQI
4th Jul 2025603 PMAQI
4th Jul 2025574 PMAQI
4th Jul 2025535 PMAQI
4th Jul 2025576 PMAQI
4th Jul 2025577 PMAQI
4th Jul 2025628 PMAQI
4th Jul 2025629 PMAQI
4th Jul 20256210 PMAQI
4th Jul 20256211 PMAQI
5th Jul 20256212 AMAQI
5th Jul 2025631 AMAQI
5th Jul 2025632 AMAQI
5th Jul 2025643 AMAQI
5th Jul 2025634 AMAQI
5th Jul 2025625 AMAQI
15°C12/17°C
5th Jul 2025626 AMAQI
5th Jul 2025637 AMAQI
5th Jul 2025708 AMAQI
5th Jul 2025659 AMAQI
5th Jul 20256810 AMAQI
5th Jul 20256711 AMAQI
5th Jul 20256212 PMAQI
5th Jul 2025571 PMAQI
5th Jul 2025582 PMAQI
5th Jul 2025593 PMAQI
5th Jul 2025604 PMAQI
5th Jul 2025585 PMAQI
5th Jul 2025566 PMAQI
5th Jul 2025567 PMAQI
5th Jul 2025618 PMAQI
5th Jul 2025609 PMAQI
5th Jul 20256010 PMAQI
5th Jul 20256011 PMAQI
6th Jul 20256012 AMAQI
6th Jul 2025621 AMAQI
6th Jul 2025622 AMAQI
6th Jul 2025613 AMAQI
6th Jul 2025604 AMAQI
6th Jul 2025605 AMAQI
20°C13/26°C
6th Jul 2025616 AMAQI
6th Jul 2025617 AMAQI
6th Jul 2025628 AMAQI
6th Jul 2025629 AMAQI
6th Jul 20256210 AMAQI
6th Jul 20256111 AMAQI
6th Jul 20256012 PMAQI
6th Jul 2025581 PMAQI
6th Jul 2025562 PMAQI
6th Jul 2025523 PMAQI
6th Jul 2025554 PMAQI
6th Jul 2025545 PMAQI
6th Jul 2025546 PMAQI
6th Jul 2025537 PMAQI
6th Jul 2025588 PMAQI
6th Jul 2025609 PMAQI
6th Jul 20256010 PMAQI
6th Jul 20255811 PMAQI
7th Jul 20255812 AMAQI
7th Jul 2025601 AMAQI
7th Jul 2025602 AMAQI
7th Jul 2025593 AMAQI
7th Jul 2025604 AMAQI
7th Jul 2025595 AMAQI
21°C18/26°C
7th Jul 2025596 AMAQI
7th Jul 2025607 AMAQI
7th Jul 2025648 AMAQI
7th Jul 2025609 AMAQI
7th Jul 20257410 AMAQI
7th Jul 20257011 AMAQI
7th Jul 20256812 PMAQI
7th Jul 2025681 PMAQI
7th Jul 2025672 PMAQI
7th Jul 2025683 PMAQI
7th Jul 2025604 PMAQI
7th Jul 2025585 PMAQI
7th Jul 2025626 PMAQI
7th Jul 2025627 PMAQI
7th Jul 2025598 PMAQI
7th Jul 2025609 PMAQI
7th Jul 20256010 PMAQI
7th Jul 20256011 PMAQI
8th Jul 20256012 AMAQI
8th Jul 2025591 AMAQI
8th Jul 2025582 AMAQI
8th Jul 2025583 AMAQI
8th Jul 2025584 AMAQI
8th Jul 2025585 AMAQI
23°C15/32°C
8th Jul 2025586 AMAQI
8th Jul 2025587 AMAQI
8th Jul 2025648 AMAQI
8th Jul 2025609 AMAQI
8th Jul 20256710 AMAQI
8th Jul 20256611 AMAQI
8th Jul 20256212 PMAQI
8th Jul 2025621 PMAQI
8th Jul 2025602 PMAQI
8th Jul 2025623 PMAQI
8th Jul 2025624 PMAQI
8th Jul 2025615 PMAQI
8th Jul 2025626 PMAQI
8th Jul 2025627 PMAQI
8th Jul 2025668 PMAQI
8th Jul 2025599 PMAQI
8th Jul 20256010 PMAQI
8th Jul 20256011 PMAQI
9th Jul 20255912 AMAQI
9th Jul 2025581 AMAQI
9th Jul 2025582 AMAQI
9th Jul 2025593 AMAQI
9th Jul 2025594 AMAQI
9th Jul 2025595 AMAQI
19°C16/20°C
9th Jul 2025606 AMAQI
9th Jul 2025607 AMAQI
9th Jul 2025738 AMAQI
9th Jul 2025759 AMAQI
9th Jul 20257810 AMAQI
9th Jul 20257811 AMAQI
9th Jul 20257212 PMAQI
9th Jul 2025681 PMAQI
9th Jul 2025702 PMAQI
9th Jul 2025683 PMAQI
9th Jul 2025744 PMAQI
9th Jul 2025725 PMAQI
9th Jul 2025706 PMAQI
9th Jul 2025667 PMAQI
9th Jul 2025598 PMAQI
9th Jul 2025599 PMAQI
9th Jul 20256010 PMAQI
9th Jul 20255911 PMAQI
10th Jul 20256012 AMAQI
10th Jul 2025601 AMAQI
10th Jul 2025592 AMAQI
10th Jul 2025593 AMAQI
10th Jul 2025604 AMAQI
10th Jul 2025605 AMAQI
22°C15/29°C
10th Jul 2025606 AMAQI
10th Jul 2025607 AMAQI
10th Jul 2025718 AMAQI
10th Jul 2025819 AMAQI
10th Jul 20257310 AMAQI
10th Jul 20257211 AMAQI
10th Jul 20256812 PMAQI
10th Jul 2025661 PMAQI
10th Jul 2025652 PMAQI
10th Jul 2025623 PMAQI
10th Jul 2025584 PMAQI
10th Jul 2025555 PMAQI
10th Jul 2025556 PMAQI
10th Jul 2025617 PMAQI
10th Jul 2025608 PMAQI
10th Jul 2025609 PMAQI
10th Jul 20256010 PMAQI
10th Jul 20256011 PMAQI
11th Jul 20256312 AMAQI
11th Jul 2025601 AMAQI
11th Jul 2025602 AMAQI
11th Jul 2025603 AMAQI
11th Jul 2025604 AMAQI
11th Jul 2025625 AMAQI
26°C20/32°C
11th Jul 2025616 AMAQI
11th Jul 2025607 AMAQI
11th Jul 2025688 AMAQI
11th Jul 2025729 AMAQI
11th Jul 20256610 AMAQI
11th Jul 20256611 AMAQI
11th Jul 20256412 PMAQI
11th Jul 2025641 PMAQI
11th Jul 2025622 PMAQI
11th Jul 2025603 PMAQI
11th Jul 2025624 PMAQI
11th Jul 2025605 PMAQI
11th Jul 2025626 PMAQI
11th Jul 2025607 PMAQI
11th Jul 2025628 PMAQI
11th Jul 2025629 PMAQI
11th Jul 20256210 PMAQI
11th Jul 20256411 PMAQI
12th Jul 20256212 AMAQI
12th Jul 2025621 AMAQI
12th Jul 2025612 AMAQI
12th Jul 2025623 AMAQI
12th Jul 2025634 AMAQI
12th Jul 2025635 AMAQI
26°C21/33°C
12th Jul 2025636 AMAQI
12th Jul 2025627 AMAQI
12th Jul 2025658 AMAQI
12th Jul 2025689 AMAQI
12th Jul 20256910 AMAQI
12th Jul 20256811 AMAQI
12th Jul 20256412 PMAQI
12th Jul 2025621 PMAQI
12th Jul 2025652 PMAQI
12th Jul 2025643 PMAQI
12th Jul 2025644 PMAQI
12th Jul 2025645 PMAQI
12th Jul 2025646 PMAQI
12th Jul 2025647 PMAQI
12th Jul 2025638 PMAQI
12th Jul 2025649 PMAQI
12th Jul 20256310 PMAQI
12th Jul 20256511 PMAQI
13th Jul 20256312 AMAQI
13th Jul 2025631 AMAQI
13th Jul 2025632 AMAQI
13th Jul 2025623 AMAQI
13th Jul 2025624 AMAQI
13th Jul 2025625 AMAQI
25°C19/32°C
13th Jul 2025626 AMAQI
13th Jul 2025627 AMAQI
13th Jul 2025738 AMAQI
13th Jul 2025819 AMAQI
13th Jul 20258210 AMAQI
13th Jul 20257411 AMAQI
13th Jul 20256612 PMAQI
13th Jul 2025701 PMAQI
13th Jul 2025692 PMAQI
13th Jul 2025673 PMAQI
13th Jul 2025704 PMAQI
13th Jul 2025705 PMAQI
13th Jul 2025716 PMAQI
13th Jul 2025647 PMAQI
13th Jul 2025638 PMAQI
13th Jul 2025649 PMAQI
13th Jul 20256410 PMAQI
13th Jul 20256411 PMAQI
14th Jul 20256412 AMAQI
14th Jul 2025621 AMAQI
14th Jul 2025632 AMAQI
14th Jul 2025643 AMAQI
14th Jul 2025634 AMAQI
14th Jul 2025635 AMAQI
25°C19/32°C
14th Jul 2025646 AMAQI
14th Jul 2025637 AMAQI
14th Jul 2025718 AMAQI
14th Jul 2025779 AMAQI
14th Jul 20258010 AMAQI
14th Jul 20258111 AMAQI
14th Jul 20257412 PMAQI
14th Jul 2025721 PMAQI
14th Jul 2025722 PMAQI
14th Jul 2025703 PMAQI
14th Jul 2025704 PMAQI
14th Jul 2025685 PMAQI
14th Jul 2025706 PMAQI
14th Jul 2025687 PMAQI
14th Jul 2025678 PMAQI
14th Jul 2025669 PMAQI
14th Jul 20256610 PMAQI
14th Jul 20256711 PMAQI
15th Jul 20256612 AMAQI
15th Jul 2025651 AMAQI
15th Jul 2025642 AMAQI
15th Jul 2025653 AMAQI
15th Jul 2025664 AMAQI
15th Jul 2025655 AMAQI
26°C20/33°C
15th Jul 2025666 AMAQI
15th Jul 2025657 AMAQI
15th Jul 2025798 AMAQI
15th Jul 2025869 AMAQI
15th Jul 20258410 AMAQI
15th Jul 20257811 AMAQI
15th Jul 20257512 PMAQI
15th Jul 2025751 PMAQI
15th Jul 2025722 PMAQI
15th Jul 2025763 PMAQI
15th Jul 2025744 PMAQI
15th Jul 2025705 PMAQI
15th Jul 2025736 PMAQI
15th Jul 2025717 PMAQI
15th Jul 2025648 PMAQI
15th Jul 2025649 PMAQI
15th Jul 20256510 PMAQI
15th Jul 20256811 PMAQI
16th Jul 20256712 AMAQI
16th Jul 2025651 AMAQI
16th Jul 2025662 AMAQI
16th Jul 2025653 AMAQI
16th Jul 2025654 AMAQI
16th Jul 2025655 AMAQI
29°C21/34°C
16th Jul 2025656 AMAQI
16th Jul 2025667 AMAQI
16th Jul 2025848 AMAQI
16th Jul 2025869 AMAQI
16th Jul 20258910 AMAQI
16th Jul 20258811 AMAQI
16th Jul 20258212 PMAQI
16th Jul 2025801 PMAQI
16th Jul 2025782 PMAQI
16th Jul 2025713 PMAQI
16th Jul 2025664 PMAQI
16th Jul 2025675 PMAQI
16th Jul 2025646 PMAQI
16th Jul 2025627 PMAQI
16th Jul 2025648 PMAQI
16th Jul 2025669 PMAQI
16th Jul 20256710 PMAQI
16th Jul 20256611 PMAQI
17th Jul 20256612 AMAQI
17th Jul 2025661 AMAQI
17th Jul 2025662 AMAQI
17th Jul 2025663 AMAQI
17th Jul 2025684 AMAQI
17th Jul 2025685 AMAQI
28°C22/34°C
17th Jul 2025676 AMAQI
17th Jul 2025687 AMAQI
17th Jul 2025708 AMAQI
17th Jul 2025669 AMAQI
17th Jul 20258010 AMAQI
17th Jul 20257011 AMAQI
17th Jul 20256512 PMAQI
17th Jul 2025661 PMAQI
17th Jul 2025662 PMAQI
17th Jul 2025673 PMAQI
17th Jul 2025674 PMAQI
17th Jul 2025645 PMAQI
17th Jul 2025646 PMAQI
17th Jul 2025657 PMAQI
17th Jul 2025658 PMAQI
17th Jul 2025669 PMAQI
17th Jul 20256610 PMAQI
17th Jul 20256511 PMAQI
18th Jul 20256612 AMAQI
18th Jul 2025661 AMAQI
18th Jul 2025662 AMAQI
18th Jul 2025663 AMAQI
18th Jul 2025664 AMAQI
18th Jul 2025665 AMAQI
26°C20/34°C
18th Jul 2025666 AMAQI
18th Jul 2025667 AMAQI
18th Jul 2025658 AMAQI
18th Jul 2025659 AMAQI
18th Jul 20257110 AMAQI
18th Jul 20257511 AMAQI
18th Jul 20257012 PMAQI
18th Jul 2025681 PMAQI
18th Jul 2025672 PMAQI
18th Jul 2025693 PMAQI
18th Jul 2025734 PMAQI
18th Jul 2025705 PMAQI
18th Jul 2025706 PMAQI
18th Jul 2025687 PMAQI
18th Jul 2025668 PMAQI
18th Jul 2025699 PMAQI
18th Jul 20256910 PMAQI
18th Jul 20256811 PMAQI
19th Jul 20256712 AMAQI
19th Jul 2025651 AMAQI
19th Jul 2025662 AMAQI
19th Jul 2025663 AMAQI
19th Jul 2025664 AMAQI
19th Jul 2025665 AMAQI
24°C20/32°C
19th Jul 2025666 AMAQI
19th Jul 2025667 AMAQI
19th Jul 2025888 AMAQI
19th Jul 2025939 AMAQI
19th Jul 20258910 AMAQI
19th Jul 20257811 AMAQI
19th Jul 20257712 PMAQI
19th Jul 2025751 PMAQI
19th Jul 2025772 PMAQI
19th Jul 2025723 PMAQI
19th Jul 2025724 PMAQI
19th Jul 2025735 PMAQI
19th Jul 2025786 PMAQI
19th Jul 2025677 PMAQI
19th Jul 2025678 PMAQI
19th Jul 2025689 PMAQI
19th Jul 20256610 PMAQI
19th Jul 20256711 PMAQI
20th Jul 20256612 AMAQI
20th Jul 2025671 AMAQI
20th Jul 2025662 AMAQI
20th Jul 2025673 AMAQI
20th Jul 2025684 AMAQI
20th Jul 2025685 AMAQI
21°C16/24°C
20th Jul 2025686 AMAQI
20th Jul 2025687 AMAQI
20th Jul 2025678 AMAQI
20th Jul 2025649 AMAQI
20th Jul 20256510 AMAQI
20th Jul 20256811 AMAQI
20th Jul 20256612 PMAQI
20th Jul 2025671 PMAQI
20th Jul 2025622 PMAQI
20th Jul 2025603 PMAQI
20th Jul 2025614 PMAQI
20th Jul 2025585 PMAQI
20th Jul 2025556 PMAQI
20th Jul 2025577 PMAQI
20th Jul 2025648 PMAQI
20th Jul 2025669 PMAQI
20th Jul 20256610 PMAQI
20th Jul 20256611 PMAQI
21st Jul 20256512 AMAQI
21st Jul 2025661 AMAQI
21st Jul 2025672 AMAQI
21st Jul 2025653 AMAQI
21st Jul 2025664 AMAQI
21st Jul 2025665 AMAQI
22°C19/27°C
21st Jul 2025666 AMAQI
21st Jul 2025677 AMAQI
21st Jul 2025748 AMAQI
21st Jul 2025729 AMAQI
21st Jul 20257210 AMAQI
21st Jul 20257211 AMAQI
21st Jul 20256612 PMAQI
21st Jul 2025631 PMAQI
21st Jul 2025632 PMAQI
21st Jul 2025623 PMAQI
21st Jul 2025614 PMAQI
21st Jul 2025625 PMAQI
21st Jul 2025626 PMAQI
21st Jul 2025607 PMAQI
21st Jul 2025638 PMAQI
21st Jul 2025649 PMAQI
21st Jul 20256710 PMAQI
21st Jul 20256711 PMAQI
22nd Jul 20256512 AMAQI
22nd Jul 2025651 AMAQI
22nd Jul 2025652 AMAQI
22nd Jul 2025643 AMAQI
22nd Jul 2025654 AMAQI
22nd Jul 2025655 AMAQI
23°C18/29°C
22nd Jul 2025666 AMAQI
22nd Jul 2025667 AMAQI
22nd Jul 2025598 AMAQI
22nd Jul 2025619 AMAQI
22nd Jul 20256610 AMAQI
22nd Jul 20256311 AMAQI
22nd Jul 20256512 PMAQI
22nd Jul 2025611 PMAQI
22nd Jul 2025562 PMAQI
22nd Jul 2025593 PMAQI
22nd Jul 2025624 PMAQI
22nd Jul 2025635 PMAQI
22nd Jul 2025616 PMAQI
22nd Jul 2025647 PMAQI
22nd Jul 2025648 PMAQI
22nd Jul 2025649 PMAQI
22nd Jul 20256410 PMAQI
22nd Jul 20256411 PMAQI
23rd Jul 20256212 AMAQI
23rd Jul 2025641 AMAQI
23rd Jul 2025642 AMAQI
23rd Jul 2025643 AMAQI
23rd Jul 2025634 AMAQI
23rd Jul 2025635 AMAQI
25°C18/33°C
23rd Jul 2025646 AMAQI
23rd Jul 2025647 AMAQI
23rd Jul 2025628 AMAQI
23rd Jul 2025609 AMAQI
23rd Jul 20256110 AMAQI
23rd Jul 20256011 AMAQI
23rd Jul 20256212 PMAQI
23rd Jul 2025641 PMAQI
23rd Jul 2025642 PMAQI
23rd Jul 2025663 PMAQI
23rd Jul 2025704 PMAQI
23rd Jul 2025675 PMAQI
23rd Jul 2025726 PMAQI
23rd Jul 2025707 PMAQI
23rd Jul 2025648 PMAQI
23rd Jul 2025649 PMAQI
23rd Jul 20256410 PMAQI
23rd Jul 20256211 PMAQI
24th Jul 20256312 AMAQI
24th Jul 2025631 AMAQI
24th Jul 2025632 AMAQI
24th Jul 2025633 AMAQI
24th Jul 2025634 AMAQI
24th Jul 2025635 AMAQI
26°C21/32°C
24th Jul 2025636 AMAQI
24th Jul 2025637 AMAQI
24th Jul 2025768 AMAQI
24th Jul 2025879 AMAQI
24th Jul 20257610 AMAQI
24th Jul 20257211 AMAQI
24th Jul 20256712 PMAQI
24th Jul 2025721 PMAQI
24th Jul 2025712 PMAQI
24th Jul 2025663 PMAQI
24th Jul 2025644 PMAQI
24th Jul 2025585 PMAQI
24th Jul 2025556 PMAQI
24th Jul 2025587 PMAQI
24th Jul 2025628 PMAQI
24th Jul 2025629 PMAQI
24th Jul 20256210 PMAQI
24th Jul 20256211 PMAQI
25th Jul 20256312 AMAQI
25th Jul 2025621 AMAQI
25th Jul 2025632 AMAQI
25th Jul 2025633 AMAQI
25th Jul 2025644 AMAQI
25th Jul 2025625 AMAQI
20°C18/21°C
25th Jul 2025636 AMAQI
25th Jul 2025637 AMAQI
25th Jul 2025648 AMAQI
25th Jul 2025749 AMAQI
25th Jul 20257410 AMAQI
25th Jul 20256611 AMAQI
25th Jul 20256812 PMAQI
25th Jul 2025641 PMAQI
25th Jul 2025622 PMAQI
25th Jul 2025583 PMAQI
25th Jul 2025594 PMAQI
25th Jul 2025605 PMAQI
25th Jul 2025606 PMAQI
25th Jul 2025647 PMAQI
25th Jul 2025618 PMAQI
25th Jul 2025639 PMAQI
25th Jul 20256310 PMAQI
25th Jul 20256311 PMAQI
26th Jul 20256312 AMAQI
26th Jul 2025631 AMAQI
26th Jul 2025632 AMAQI
26th Jul 2025623 AMAQI
26th Jul 2025624 AMAQI
26th Jul 2025635 AMAQI
21°C17/28°C
26th Jul 2025626 AMAQI
26th Jul 2025627 AMAQI
26th Jul 2025688 AMAQI
26th Jul 2025709 AMAQI
26th Jul 20256810 AMAQI
26th Jul 20257211 AMAQI
26th Jul 20256912 PMAQI
26th Jul 2025661 PMAQI
26th Jul 2025672 PMAQI
26th Jul 2025673 PMAQI
26th Jul 2025654 PMAQI
26th Jul 2025685 PMAQI
26th Jul 2025766 PMAQI
26th Jul 2025747 PMAQI
26th Jul 2025648 PMAQI
26th Jul 2025659 PMAQI
26th Jul 20256310 PMAQI
26th Jul 20256311 PMAQI
27th Jul 20256312 AMAQI
27th Jul 2025621 AMAQI
27th Jul 2025622 AMAQI
27th Jul 2025623 AMAQI
27th Jul 2025644 AMAQI
27th Jul 2025635 AMAQI
25°C18/32°C
27th Jul 2025636 AMAQI
27th Jul 2025637 AMAQI
27th Jul 2025688 AMAQI
27th Jul 2025729 AMAQI
27th Jul 20257610 AMAQI
27th Jul 20257111 AMAQI
27th Jul 20256612 PMAQI
27th Jul 2025631 PMAQI
27th Jul 2025622 PMAQI
27th Jul 2025633 PMAQI
27th Jul 2025644 PMAQI
27th Jul 2025625 PMAQI
27th Jul 2025696 PMAQI
27th Jul 2025687 PMAQI
27th Jul 2025638 PMAQI
27th Jul 2025649 PMAQI
27th Jul 20256410 PMAQI
27th Jul 20256311 PMAQI
28th Jul 20256312 AMAQI
28th Jul 2025621 AMAQI
28th Jul 2025622 AMAQI
28th Jul 2025633 AMAQI
28th Jul 2025634 AMAQI
28th Jul 2025625 AMAQI
27°C20/33°C
28th Jul 2025626 AMAQI
28th Jul 2025637 AMAQI
28th Jul 2025638 AMAQI
28th Jul 2025679 AMAQI
28th Jul 20256210 AMAQI
28th Jul 20255811 AMAQI
28th Jul 20256612 PMAQI
28th Jul 2025741 PMAQI
28th Jul 2025702 PMAQI
28th Jul 2025673 PMAQI
28th Jul 2025644 PMAQI
28th Jul 2025645 PMAQI
28th Jul 2025666 PMAQI
28th Jul 2025727 PMAQI
28th Jul 2025638 PMAQI
28th Jul 2025629 PMAQI
28th Jul 20256210 PMAQI
28th Jul 20256411 PMAQI
29th Jul 20256412 AMAQI
29th Jul 2025611 AMAQI
29th Jul 2025622 AMAQI
29th Jul 2025623 AMAQI
29th Jul 2025634 AMAQI
29th Jul 2025635 AMAQI
27°C20/34°C
29th Jul 2025626 AMAQI
29th Jul 2025627 AMAQI
29th Jul 2025788 AMAQI
29th Jul 2025829 AMAQI
29th Jul 20257810 AMAQI
29th Jul 20257411 AMAQI
29th Jul 20257512 PMAQI
29th Jul 2025781 PMAQI
29th Jul 2025752 PMAQI
29th Jul 2025703 PMAQI
29th Jul 2025664 PMAQI
29th Jul 2025615 PMAQI
29th Jul 2025656 PMAQI
29th Jul 2025707 PMAQI
29th Jul 2025648 PMAQI
29th Jul 2025659 PMAQI
29th Jul 20256410 PMAQI
29th Jul 20256311 PMAQI
30th Jul 20256212 AMAQI
30th Jul 2025621 AMAQI
30th Jul 2025622 AMAQI
30th Jul 2025623 AMAQI
30th Jul 2025634 AMAQI
30th Jul 2025635 AMAQI
26°C19/33°C
30th Jul 2025636 AMAQI
30th Jul 2025647 AMAQI
30th Jul 2025608 AMAQI
30th Jul 2025639 AMAQI
30th Jul 20257410 AMAQI
30th Jul 20257611 AMAQI
30th Jul 20256912 PMAQI
30th Jul 2025681 PMAQI
30th Jul 2025662 PMAQI
30th Jul 2025643 PMAQI
30th Jul 2025604 PMAQI
30th Jul 2025535 PMAQI
30th Jul 2025566 PMAQI
30th Jul 2025627 PMAQI
30th Jul 2025648 PMAQI
30th Jul 2025669 PMAQI
30th Jul 20256610 PMAQI
30th Jul 20256411 PMAQI
31st Jul 20256412 AMAQI
31st Jul 2025611 AMAQI
31st Jul 2025622 AMAQI
31st Jul 2025613 AMAQI
31st Jul 2025614 AMAQI
31st Jul 2025615 AMAQI
27°C20/35°C
31st Jul 2025616 AMAQI
31st Jul 2025617 AMAQI
31st Jul 2025618 AMAQI
31st Jul 2025619 AMAQI
31st Jul 202511610 AMAQI
31st Jul 202511111 AMAQI
31st Jul 20259412 PMAQI
31st Jul 2025811 PMAQI
31st Jul 2025822 PMAQI
31st Jul 2025773 PMAQI
31st Jul 2025804 PMAQI
31st Jul 2025825 PMAQI
31st Jul 2025816 PMAQI
31st Jul 2025727 PMAQI
31st Jul 2025648 PMAQI
31st Jul 2025619 PMAQI
31st Jul 20256410 PMAQI
31st Jul 20256411 PMAQI
1st Aug 20256012 AMAQI
1st Aug 2025581 AMAQI
1st Aug 2025572 AMAQI
1st Aug 2025603 AMAQI
1st Aug 2025594 AMAQI
1st Aug 2025605 AMAQI
23°C18/28°C
1st Aug 2025596 AMAQI
1st Aug 2025607 AMAQI
1st Aug 2025748 AMAQI
1st Aug 2025709 AMAQI
1st Aug 20257010 AMAQI
1st Aug 20257511 AMAQI
1st Aug 20256812 PMAQI
1st Aug 2025701 PMAQI
1st Aug 2025722 PMAQI
1st Aug 2025663 PMAQI
1st Aug 2025644 PMAQI
1st Aug 2025705 PMAQI
1st Aug 2025596 PMAQI
1st Aug 2025677 PMAQI
1st Aug 2025678 PMAQI
1st Aug 2025639 PMAQI
1st Aug 20256610 PMAQI
1st Aug 20256211 PMAQI
2nd Aug 20256412 AMAQI
2nd Aug 2025601 AMAQI
2nd Aug 2025602 AMAQI
2nd Aug 2025603 AMAQI
2nd Aug 2025624 AMAQI
2nd Aug 2025615 AMAQI
24°C18/31°C
2nd Aug 2025626 AMAQI
6 AM2nd Aug 2025607 AMAQI
2nd Aug 2025638 AMAQI
2nd Aug 2025689 AMAQI
2nd Aug 20256910 AMAQI
2nd Aug 20257211 AMAQI
2nd Aug 20257812 PMAQI
2nd Aug 2025711 PMAQI
1 PM2nd Aug 2025722 PMAQI
2nd Aug 2025673 PMAQI
2nd Aug 2025624 PMAQI
2nd Aug 2025665 PMAQI
2nd Aug 2025666 PMAQI
2nd Aug 2025627 PMAQI
2nd Aug 2025628 PMAQI
8 PM2nd Aug 2025649 PMAQI
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
8 AM - 8 PM
67AQI
13 hours / Day
390 hours / Month
Avg. Lowest Time
6 AM - 7 AM
63AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 AM to 8 PM (Avg. 67), while the lowest AQI was between 6 AM to 7 AM (Avg. 63).
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
Railway Design Institute, Lanzhou, Gansu, China
2025
54%
116
37%
79
8%
18
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Good
0 DaysModerate
116 DaysPoor
79 DaysUnhealthy
18 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 214 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
Railway Design Institute, Lanzhou, Gansu, 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
144AQI
144AQI
2nd January 2025
147AQI
147AQI
3rd January 2025
152AQI
152AQI
4th January 2025
152AQI
152AQI
5th January 2025
167AQI
167AQI
6th January 2025
166AQI
166AQI
7th January 2025
135AQI
135AQI
8th January 2025
144AQI
144AQI
9th January 2025
136AQI
136AQI
10th January 2025
117AQI
117AQI
11th January 2025
133AQI
133AQI
12th January 2025
144AQI
144AQI
13th January 2025
150AQI
150AQI
14th January 2025
116AQI
116AQI
15th January 2025
141AQI
141AQI
16th January 2025
136AQI
136AQI
17th January 2025
148AQI
148AQI
18th January 2025
135AQI
135AQI
19th January 2025
157AQI
157AQI
20th January 2025
153AQI
153AQI
21st January 2025
155AQI
155AQI
22nd January 2025
157AQI
157AQI
23rd January 2025
166AQI
166AQI
24th January 2025
150AQI
150AQI
25th January 2025
119AQI
119AQI
26th January 2025
125AQI
125AQI
27th January 2025
137AQI
137AQI
28th January 2025
168AQI
168AQI
29th January 2025
181AQI
181AQI
30th January 2025
168AQI
168AQI
31st January 2025
154AQI
154AQI
1st February 2025
142AQI
142AQI
2nd February 2025
115AQI
115AQI
3rd February 2025
117AQI
117AQI
4th February 2025
107AQI
107AQI
5th February 2025
91AQI
91AQI
6th February 2025
94AQI
94AQI
7th February 2025
91AQI
91AQI
8th February 2025
104AQI
104AQI
9th February 2025
119AQI
119AQI
10th February 2025
118AQI
118AQI
11th February 2025
116AQI
116AQI
12th February 2025
126AQI
126AQI
13th February 2025
140AQI
140AQI
14th February 2025
99AQI
99AQI
15th February 2025
105AQI
105AQI
16th February 2025
97AQI
97AQI
17th February 2025
100AQI
100AQI
18th February 2025
88AQI
88AQI
19th February 2025
92AQI
92AQI
20th February 2025
95AQI
95AQI
21st February 2025
95AQI
95AQI
22nd February 2025
90AQI
90AQI
23rd February 2025
84AQI
84AQI
24th February 2025
91AQI
91AQI
25th February 2025
92AQI
92AQI
26th February 2025
90AQI
90AQI
27th February 2025
96AQI
96AQI
28th February 2025
98AQI
98AQI
1st March 2025
100AQI
100AQI
2nd March 2025
80AQI
80AQI
3rd March 2025
91AQI
91AQI
4th March 2025
97AQI
97AQI
5th March 2025
84AQI
84AQI
6th March 2025
89AQI
89AQI
7th March 2025
92AQI
92AQI
8th March 2025
97AQI
97AQI
9th March 2025
91AQI
91AQI
10th March 2025
90AQI
90AQI
11th March 2025
148AQI
148AQI
12th March 2025
98AQI
98AQI
13th March 2025
108AQI
108AQI
14th March 2025
101AQI
101AQI
15th March 2025
86AQI
86AQI
16th March 2025
84AQI
84AQI
17th March 2025
77AQI
77AQI
18th March 2025
76AQI
76AQI
19th March 2025
83AQI
83AQI
20th March 2025
89AQI
89AQI
21st March 2025
95AQI
95AQI
22nd March 2025
97AQI
97AQI
23rd March 2025
78AQI
78AQI
24th March 2025
99AQI
99AQI
25th March 2025
127AQI
127AQI
26th March 2025
183AQI
183AQI
27th March 2025
99AQI
99AQI
28th March 2025
121AQI
121AQI
29th March 2025
97AQI
97AQI
30th March 2025
115AQI
115AQI
31st March 2025
102AQI
102AQI
1st April 2025
135AQI
135AQI
2nd April 2025
134AQI
134AQI
3rd April 2025
138AQI
138AQI
4th April 2025
146AQI
146AQI
5th April 2025
118AQI
118AQI
6th April 2025
118AQI
118AQI
7th April 2025
109AQI
109AQI
8th April 2025
109AQI
109AQI
9th April 2025
116AQI
116AQI
10th April 2025
99AQI
99AQI
11th April 2025
130AQI
130AQI
12th April 2025
174AQI
174AQI
13th April 2025
112AQI
112AQI
14th April 2025
107AQI
107AQI
15th April 2025
96AQI
96AQI
16th April 2025
187AQI
187AQI
17th April 2025
111AQI
111AQI
18th April 2025
182AQI
182AQI
19th April 2025
145AQI
145AQI
20th April 2025
150AQI
150AQI
21st April 2025
143AQI
143AQI
22nd April 2025
124AQI
124AQI
23rd April 2025
104AQI
104AQI
24th April 2025
94AQI
94AQI
25th April 2025
90AQI
90AQI
26th April 2025
87AQI
87AQI
27th April 2025
93AQI
93AQI
28th April 2025
84AQI
84AQI
29th April 2025
85AQI
85AQI
30th April 2025
103AQI
103AQI
1st May 2025
84AQI
84AQI
2nd May 2025
117AQI
117AQI
3rd May 2025
122AQI
122AQI
4th May 2025
125AQI
125AQI
5th May 2025
154AQI
154AQI
6th May 2025
137AQI
137AQI
7th May 2025
130AQI
130AQI
8th May 2025
104AQI
104AQI
9th May 2025
108AQI
108AQI
10th May 2025
89AQI
89AQI
11th May 2025
93AQI
93AQI
12th May 2025
93AQI
93AQI
13th May 2025
110AQI
110AQI
14th May 2025
88AQI
88AQI
15th May 2025
96AQI
96AQI
16th May 2025
96AQI
96AQI
17th May 2025
144AQI
144AQI
18th May 2025
106AQI
106AQI
19th May 2025
112AQI
112AQI
20th May 2025
101AQI
101AQI
21st May 2025
116AQI
116AQI
22nd May 2025
105AQI
105AQI
23rd May 2025
100AQI
100AQI
24th May 2025
92AQI
92AQI
25th May 2025
85AQI
85AQI
26th May 2025
87AQI
87AQI
27th May 2025
83AQI
83AQI
28th May 2025
82AQI
82AQI
29th May 2025
82AQI
82AQI
30th May 2025
119AQI
119AQI
31st May 2025
108AQI
108AQI
1st June 2025
99AQI
99AQI
2nd June 2025
91AQI
91AQI
3rd June 2025
81AQI
81AQI
4th June 2025
87AQI
87AQI
5th June 2025
80AQI
80AQI
6th June 2025
83AQI
83AQI
7th June 2025
81AQI
81AQI
8th June 2025
90AQI
90AQI
9th June 2025
84AQI
84AQI
10th June 2025
86AQI
86AQI
11th June 2025
93AQI
93AQI
12th June 2025
91AQI
91AQI
13th June 2025
105AQI
105AQI
14th June 2025
93AQI
93AQI
15th June 2025
107AQI
107AQI
16th June 2025
99AQI
99AQI
17th June 2025
106AQI
106AQI
18th June 2025
115AQI
115AQI
19th June 2025
110AQI
110AQI
20th June 2025
112AQI
112AQI
21st June 2025
106AQI
106AQI
22nd June 2025
117AQI
117AQI
23rd June 2025
98AQI
98AQI
24th June 2025
92AQI
92AQI
25th June 2025
84AQI
84AQI
26th June 2025
83AQI
83AQI
27th June 2025
75AQI
75AQI
28th June 2025
70AQI
70AQI
29th June 2025
73AQI
73AQI
30th June 2025
69AQI
69AQI
1st July 2025
69AQI
69AQI
2nd July 2025
70AQI
70AQI
3rd July 2025
68AQI
68AQI
4th July 2025
63AQI
63AQI
5th July 2025
62AQI
62AQI
6th July 2025
59AQI
59AQI
7th July 2025
61AQI
61AQI
8th July 2025
60AQI
60AQI
9th July 2025
64AQI
64AQI
10th July 2025
62AQI
62AQI
11th July 2025
62AQI
62AQI
12th July 2025
63AQI
63AQI
13th July 2025
66AQI
66AQI
14th July 2025
67AQI
67AQI
15th July 2025
69AQI
69AQI
16th July 2025
69AQI
69AQI
17th July 2025
66AQI
66AQI
18th July 2025
68AQI
68AQI
19th July 2025
71AQI
71AQI
20th July 2025
65AQI
65AQI
21st July 2025
65AQI
65AQI
22nd July 2025
64AQI
64AQI
23rd July 2025
64AQI
64AQI
24th July 2025
64AQI
64AQI
25th July 2025
63AQI
63AQI
26th July 2025
66AQI
66AQI
27th July 2025
64AQI
64AQI
28th July 2025
64AQI
64AQI
29th July 2025
66AQI
66AQI
30th July 2025
63AQI
63AQI
31st July 2025
72AQI
72AQI
1st August 2025
64AQI
64AQI
147AQI
103AQI
99AQI
121AQI
105AQI
92AQI
65AQI
64AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
2025104AQI
18
13
17
11
23
7
1
8
19
3
14
16
1
22
8
31
1
116
79
18
Highest AQI recorded in
January147AQI
Lowest AQI recorded in
August64AQI
2024108AQI
1
10
20
1
10
15
3
3
21
5
2
17
11
2
25
5
1
30
1
23
5
1
1
29
2
26
4
23
8
16
12
2
1
15
15
1
195
103
59
8
Highest AQI recorded in
February157AQI
Lowest AQI recorded in
June72AQI
2023115AQI
9
22
17
11
1
27
1
1
1
6
14
8
1
1
21
9
1
27
3
30
1
1
28
1
1
25
5
14
17
6
14
6
1
16
13
1
1
159
133
62
3
3
Highest AQI recorded in
January159AQI
Lowest AQI recorded in
July74AQI
2022103AQI
1
20
10
8
12
1
11
16
1
3
14
11
3
2
28
2
1
30
4
18
1
1
2
25
1
23
8
9
19
2
2
10
19
6
170
100
36
6
Highest AQI recorded in
December148AQI
Lowest AQI recorded in
July67AQI
2021109AQI
6
21
4
10
18
5
16
3
1
6
25
3
2
25
5
1
29
1
31
1
20
5
25
19
12
7
18
5
5
20
6
6
207
114
19
1
8
Highest AQI recorded in
March248AQI
Lowest AQI recorded in
July65AQI
202088AQI
4
8
1
13
7
1
16
2
28
2
2
29
6
25
4
26
24
7
6
20
4
5
23
3
12
176
69
9
Highest AQI recorded in
November124AQI
Lowest AQI recorded in
August60AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
115AQILeast Polluted Year Recorded
2020(Avg.)
88AQIRailway Design Institute's annual 2025 AQI (104) shows an average percentage change of 0.8% (worsened AQI) compared to previous years: 2020 (88), 2021 (109), 2022 (103), 2023 (115), 2024 (108).
