Railway, Chengde, 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
Railway, Chengde, Hebei, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
12th Aug 2021
94AQILowest AQI recorded on
20th Aug 2024
20AQISame Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 61 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 6th Aug - 7th Aug 2025
Railway, Chengde, Hebei, China
AQI
Day
Night
.
4 AM6th Aug 2025
7 PM
3 AM7th Aug 2025
Day time
Avg. Highest Time
8AM6th Aug
74AQI
Avg. Lowest Time
3PM6th Aug
52AQI
Night time
Avg. Highest Time
12AM7th Aug
65AQI
Avg. Lowest Time
8PM6th Aug
58AQI
In the last 24 hours,
Railway's AQI reached its highest point of 74 at 8 AM during the Day, while the lowest point, 52, was recorded at 3 PM during the Day between 6th Aug and 7th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Railway, Chengde, Hebei, China
JulAug
08th - 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 - 06th06th - 07th07th
Day
Night
8th Jul 2025584 AMAQI
8th Jul 2025585 AMAQI
8th Jul 2025586 AMAQI
8th Jul 2025587 AMAQI
8th Jul 2025578 AMAQI
8th Jul 2025509 AMAQI
8th Jul 20254810 AMAQI
8th Jul 20255711 AMAQI
8th Jul 20255212 PMAQI
8th Jul 2025421 PMAQI
8th Jul 2025472 PMAQI
8th Jul 2025543 PMAQI
8th Jul 2025584 PMAQI
8th Jul 2025645 PMAQI
8th Jul 2025606 PMAQI
8th Jul 2025647 PMAQI
8th Jul 2025658 PMAQI
8th Jul 2025679 PMAQI
8th Jul 20256710 PMAQI
8th Jul 20256811 PMAQI
9th Jul 20257012 AMAQI
9th Jul 2025601 AMAQI
9th Jul 2025592 AMAQI
9th Jul 2025593 AMAQI
25°C20/30°C
9th Jul 2025584 AMAQI
9th Jul 2025585 AMAQI
9th Jul 2025586 AMAQI
9th Jul 2025587 AMAQI
9th Jul 2025688 AMAQI
9th Jul 2025729 AMAQI
9th Jul 20259010 AMAQI
9th Jul 20258811 AMAQI
9th Jul 20257612 PMAQI
9th Jul 2025671 PMAQI
9th Jul 2025712 PMAQI
9th Jul 2025573 PMAQI
9th Jul 2025554 PMAQI
9th Jul 2025585 PMAQI
9th Jul 2025626 PMAQI
9th Jul 2025757 PMAQI
9th Jul 2025718 PMAQI
9th Jul 2025729 PMAQI
9th Jul 20256810 PMAQI
9th Jul 20256411 PMAQI
10th Jul 20257212 AMAQI
10th Jul 2025611 AMAQI
10th Jul 2025612 AMAQI
10th Jul 2025623 AMAQI
26°C21/31°C
10th Jul 2025644 AMAQI
10th Jul 2025645 AMAQI
10th Jul 2025646 AMAQI
10th Jul 2025647 AMAQI
10th Jul 2025828 AMAQI
10th Jul 2025889 AMAQI
10th Jul 202510510 AMAQI
10th Jul 20259611 AMAQI
10th Jul 202511212 PMAQI
10th Jul 20251141 PMAQI
10th Jul 2025862 PMAQI
10th Jul 2025933 PMAQI
10th Jul 20251034 PMAQI
10th Jul 2025885 PMAQI
10th Jul 2025826 PMAQI
10th Jul 2025797 PMAQI
10th Jul 2025798 PMAQI
10th Jul 2025759 PMAQI
10th Jul 20257610 PMAQI
10th Jul 20257411 PMAQI
11th Jul 20257412 AMAQI
11th Jul 2025641 AMAQI
11th Jul 2025642 AMAQI
11th Jul 2025663 AMAQI
25°C23/29°C
11th Jul 2025714 AMAQI
11th Jul 2025705 AMAQI
11th Jul 2025706 AMAQI
11th Jul 2025707 AMAQI
11th Jul 2025938 AMAQI
11th Jul 2025949 AMAQI
11th Jul 20258310 AMAQI
11th Jul 20257911 AMAQI
11th Jul 20257412 PMAQI
11th Jul 2025681 PMAQI
11th Jul 2025722 PMAQI
11th Jul 2025763 PMAQI
11th Jul 2025824 PMAQI
11th Jul 2025785 PMAQI
11th Jul 2025796 PMAQI
11th Jul 2025787 PMAQI
11th Jul 2025748 PMAQI
11th Jul 2025729 PMAQI
11th Jul 20257510 PMAQI
11th Jul 20257411 PMAQI
12th Jul 20257812 AMAQI
12th Jul 2025691 AMAQI
12th Jul 2025682 AMAQI
12th Jul 2025703 AMAQI
26°C21/32°C
12th Jul 2025724 AMAQI
12th Jul 2025715 AMAQI
12th Jul 2025716 AMAQI
12th Jul 2025727 AMAQI
12th Jul 2025888 AMAQI
12th Jul 2025909 AMAQI
12th Jul 202510410 AMAQI
12th Jul 202510011 AMAQI
12th Jul 202510012 PMAQI
12th Jul 20251041 PMAQI
12th Jul 20251022 PMAQI
12th Jul 20251113 PMAQI
12th Jul 20251114 PMAQI
12th Jul 2025965 PMAQI
12th Jul 2025836 PMAQI
12th Jul 2025677 PMAQI
12th Jul 2025618 PMAQI
12th Jul 2025689 PMAQI
12th Jul 20256710 PMAQI
12th Jul 20256411 PMAQI
13th Jul 20256412 AMAQI
13th Jul 2025701 AMAQI
13th Jul 2025702 AMAQI
13th Jul 2025723 AMAQI
25°C18/34°C
13th Jul 2025764 AMAQI
13th Jul 2025765 AMAQI
13th Jul 2025766 AMAQI
13th Jul 2025757 AMAQI
13th Jul 2025688 AMAQI
13th Jul 2025489 AMAQI
13th Jul 20253610 AMAQI
13th Jul 20253811 AMAQI
13th Jul 20255512 PMAQI
13th Jul 2025411 PMAQI
13th Jul 2025502 PMAQI
13th Jul 2025503 PMAQI
13th Jul 2025454 PMAQI
13th Jul 2025435 PMAQI
13th Jul 2025466 PMAQI
13th Jul 2025527 PMAQI
13th Jul 2025628 PMAQI
13th Jul 2025709 PMAQI
13th Jul 20256410 PMAQI
13th Jul 20256111 PMAQI
14th Jul 20256612 AMAQI
14th Jul 2025701 AMAQI
14th Jul 2025712 AMAQI
14th Jul 2025693 AMAQI
25°C19/33°C
14th Jul 2025664 AMAQI
14th Jul 2025665 AMAQI
14th Jul 2025656 AMAQI
14th Jul 2025667 AMAQI
14th Jul 2025438 AMAQI
14th Jul 2025289 AMAQI
14th Jul 20252710 AMAQI
14th Jul 20252811 AMAQI
14th Jul 20253412 PMAQI
14th Jul 2025361 PMAQI
14th Jul 2025332 PMAQI
14th Jul 2025353 PMAQI
14th Jul 2025404 PMAQI
14th Jul 2025445 PMAQI
14th Jul 2025526 PMAQI
14th Jul 2025577 PMAQI
14th Jul 2025658 PMAQI
14th Jul 2025659 PMAQI
14th Jul 20256710 PMAQI
14th Jul 20256211 PMAQI
15th Jul 20256312 AMAQI
15th Jul 2025681 AMAQI
15th Jul 2025672 AMAQI
15th Jul 2025653 AMAQI
26°C19/31°C
15th Jul 2025634 AMAQI
15th Jul 2025635 AMAQI
15th Jul 2025636 AMAQI
15th Jul 2025637 AMAQI
15th Jul 2025558 AMAQI
15th Jul 2025589 AMAQI
15th Jul 20256310 AMAQI
15th Jul 20256011 AMAQI
15th Jul 20255812 PMAQI
15th Jul 2025551 PMAQI
15th Jul 2025562 PMAQI
15th Jul 2025513 PMAQI
15th Jul 2025444 PMAQI
15th Jul 2025525 PMAQI
15th Jul 2025366 PMAQI
15th Jul 2025487 PMAQI
15th Jul 2025598 PMAQI
15th Jul 2025609 PMAQI
15th Jul 20256010 PMAQI
15th Jul 20256011 PMAQI
16th Jul 20255712 AMAQI
16th Jul 2025631 AMAQI
16th Jul 2025662 AMAQI
16th Jul 2025643 AMAQI
20°C17/23°C
16th Jul 2025634 AMAQI
16th Jul 2025635 AMAQI
16th Jul 2025636 AMAQI
16th Jul 2025637 AMAQI
16th Jul 2025378 AMAQI
16th Jul 2025309 AMAQI
16th Jul 20253110 AMAQI
16th Jul 20253011 AMAQI
16th Jul 20252812 PMAQI
16th Jul 2025311 PMAQI
16th Jul 2025362 PMAQI
16th Jul 2025463 PMAQI
16th Jul 2025414 PMAQI
16th Jul 2025485 PMAQI
16th Jul 2025326 PMAQI
16th Jul 2025427 PMAQI
16th Jul 2025538 PMAQI
16th Jul 2025629 PMAQI
16th Jul 20255910 PMAQI
16th Jul 20256311 PMAQI
17th Jul 20256012 AMAQI
17th Jul 2025641 AMAQI
17th Jul 2025632 AMAQI
17th Jul 2025623 AMAQI
21°C18/26°C
17th Jul 2025594 AMAQI
17th Jul 2025585 AMAQI
17th Jul 2025596 AMAQI
17th Jul 2025597 AMAQI
17th Jul 2025388 AMAQI
17th Jul 2025309 AMAQI
17th Jul 20252610 AMAQI
17th Jul 20253011 AMAQI
17th Jul 20253312 PMAQI
17th Jul 2025341 PMAQI
17th Jul 2025312 PMAQI
17th Jul 2025293 PMAQI
17th Jul 2025274 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025436 PMAQI
17th Jul 2025407 PMAQI
17th Jul 2025528 PMAQI
17th Jul 2025629 PMAQI
17th Jul 20256310 PMAQI
17th Jul 20255611 PMAQI
18th Jul 20255612 AMAQI
18th Jul 2025611 AMAQI
18th Jul 2025612 AMAQI
18th Jul 2025603 AMAQI
23°C17/28°C
18th Jul 2025584 AMAQI
18th Jul 2025575 AMAQI
18th Jul 2025586 AMAQI
18th Jul 2025587 AMAQI
18th Jul 2025448 AMAQI
18th Jul 2025459 AMAQI
18th Jul 20253110 AMAQI
18th Jul 20252711 AMAQI
18th Jul 20253212 PMAQI
18th Jul 2025331 PMAQI
18th Jul 2025382 PMAQI
18th Jul 2025373 PMAQI
18th Jul 2025354 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025386 PMAQI
18th Jul 2025547 PMAQI
18th Jul 2025578 PMAQI
18th Jul 2025569 PMAQI
18th Jul 20255610 PMAQI
18th Jul 20255911 PMAQI
19th Jul 20255812 AMAQI
19th Jul 2025591 AMAQI
19th Jul 2025602 AMAQI
19th Jul 2025583 AMAQI
25°C19/31°C
19th Jul 2025564 AMAQI
19th Jul 2025575 AMAQI
19th Jul 2025566 AMAQI
19th Jul 2025567 AMAQI
19th Jul 2025508 AMAQI
19th Jul 2025549 AMAQI
19th Jul 20257110 AMAQI
19th Jul 20257311 AMAQI
19th Jul 20255812 PMAQI
19th Jul 2025651 PMAQI
19th Jul 2025682 PMAQI
19th Jul 2025683 PMAQI
19th Jul 2025774 PMAQI
19th Jul 2025735 PMAQI
19th Jul 2025736 PMAQI
19th Jul 2025687 PMAQI
19th Jul 2025668 PMAQI
19th Jul 2025629 PMAQI
19th Jul 20256510 PMAQI
19th Jul 20256611 PMAQI
20th Jul 20256612 AMAQI
20th Jul 2025591 AMAQI
20th Jul 2025582 AMAQI
20th Jul 2025593 AMAQI
24°C20/30°C
20th Jul 2025604 AMAQI
20th Jul 2025595 AMAQI
20th Jul 2025596 AMAQI
20th Jul 2025607 AMAQI
20th Jul 2025658 AMAQI
20th Jul 2025679 AMAQI
20th Jul 20256610 AMAQI
20th Jul 20255611 AMAQI
20th Jul 20254412 PMAQI
20th Jul 2025321 PMAQI
20th Jul 2025262 PMAQI
20th Jul 2025413 PMAQI
20th Jul 2025384 PMAQI
20th Jul 2025385 PMAQI
20th Jul 2025226 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025528 PMAQI
20th Jul 2025539 PMAQI
20th Jul 20255410 PMAQI
20th Jul 20255811 PMAQI
21st Jul 20255512 AMAQI
21st Jul 2025611 AMAQI
21st Jul 2025602 AMAQI
21st Jul 2025603 AMAQI
20°C18/21°C
21st Jul 2025594 AMAQI
21st Jul 2025595 AMAQI
21st Jul 2025606 AMAQI
21st Jul 2025597 AMAQI
21st Jul 2025488 AMAQI
21st Jul 2025269 AMAQI
21st Jul 20253010 AMAQI
21st Jul 20252411 AMAQI
21st Jul 20252612 PMAQI
21st Jul 2025301 PMAQI
21st Jul 2025442 PMAQI
21st Jul 2025353 PMAQI
21st Jul 2025354 PMAQI
21st Jul 2025335 PMAQI
21st Jul 2025286 PMAQI
21st Jul 2025427 PMAQI
21st Jul 2025588 PMAQI
21st Jul 2025609 PMAQI
21st Jul 20255410 PMAQI
21st Jul 20255611 PMAQI
22nd Jul 20255812 AMAQI
22nd Jul 2025591 AMAQI
22nd Jul 2025602 AMAQI
22nd Jul 2025583 AMAQI
25°C18/33°C
22nd Jul 2025564 AMAQI
22nd Jul 2025565 AMAQI
22nd Jul 2025566 AMAQI
22nd Jul 2025567 AMAQI
22nd Jul 2025538 AMAQI
22nd Jul 2025469 AMAQI
22nd Jul 20255010 AMAQI
22nd Jul 20254911 AMAQI
22nd Jul 20255812 PMAQI
22nd Jul 2025591 PMAQI
22nd Jul 2025562 PMAQI
22nd Jul 2025543 PMAQI
22nd Jul 2025504 PMAQI
22nd Jul 2025425 PMAQI
22nd Jul 2025486 PMAQI
22nd Jul 2025627 PMAQI
22nd Jul 2025658 PMAQI
22nd Jul 2025749 PMAQI
22nd Jul 20256910 PMAQI
22nd Jul 20256611 PMAQI
23rd Jul 20256412 AMAQI
23rd Jul 2025591 AMAQI
23rd Jul 2025592 AMAQI
23rd Jul 2025593 AMAQI
25°C19/31°C
23rd Jul 2025584 AMAQI
23rd Jul 2025575 AMAQI
23rd Jul 2025586 AMAQI
23rd Jul 2025577 AMAQI
23rd Jul 2025738 AMAQI
23rd Jul 2025759 AMAQI
23rd Jul 20257210 AMAQI
23rd Jul 20257911 AMAQI
23rd Jul 20257412 PMAQI
23rd Jul 2025681 PMAQI
23rd Jul 2025642 PMAQI
23rd Jul 2025673 PMAQI
23rd Jul 2025644 PMAQI
23rd Jul 2025645 PMAQI
23rd Jul 2025586 PMAQI
23rd Jul 2025617 PMAQI
23rd Jul 2025648 PMAQI
23rd Jul 2025669 PMAQI
23rd Jul 20256110 PMAQI
23rd Jul 20256211 PMAQI
24th Jul 20256412 AMAQI
24th Jul 2025601 AMAQI
24th Jul 2025602 AMAQI
24th Jul 2025623 AMAQI
24°C20/29°C
24th Jul 2025634 AMAQI
24th Jul 2025635 AMAQI
24th Jul 2025636 AMAQI
24th Jul 2025637 AMAQI
24th Jul 2025368 AMAQI
24th Jul 2025229 AMAQI
24th Jul 20252110 AMAQI
24th Jul 20253711 AMAQI
24th Jul 20253512 PMAQI
24th Jul 2025341 PMAQI
24th Jul 2025322 PMAQI
24th Jul 2025463 PMAQI
24th Jul 2025404 PMAQI
24th Jul 2025415 PMAQI
24th Jul 2025376 PMAQI
24th Jul 2025587 PMAQI
24th Jul 2025608 PMAQI
24th Jul 2025579 PMAQI
24th Jul 20255610 PMAQI
24th Jul 20255411 PMAQI
25th Jul 20255512 AMAQI
25th Jul 2025611 AMAQI
25th Jul 2025622 AMAQI
25th Jul 2025603 AMAQI
23°C20/26°C
25th Jul 2025584 AMAQI
25th Jul 2025585 AMAQI
25th Jul 2025586 AMAQI
25th Jul 2025577 AMAQI
25th Jul 2025398 AMAQI
25th Jul 2025349 AMAQI
25th Jul 20252410 AMAQI
25th Jul 20252411 AMAQI
25th Jul 20252412 PMAQI
25th Jul 2025541 PMAQI
25th Jul 2025642 PMAQI
25th Jul 2025633 PMAQI
25th Jul 2025744 PMAQI
25th Jul 2025815 PMAQI
25th Jul 2025686 PMAQI
25th Jul 2025707 PMAQI
25th Jul 2025688 PMAQI
25th Jul 2025689 PMAQI
25th Jul 20256510 PMAQI
25th Jul 20256011 PMAQI
26th Jul 20256012 AMAQI
26th Jul 2025591 AMAQI
26th Jul 2025602 AMAQI
26th Jul 2025583 AMAQI
23°C21/25°C
26th Jul 2025574 AMAQI
26th Jul 2025575 AMAQI
26th Jul 2025576 AMAQI
26th Jul 2025577 AMAQI
26th Jul 2025838 AMAQI
26th Jul 2025939 AMAQI
26th Jul 20258210 AMAQI
26th Jul 20258011 AMAQI
26th Jul 20257912 PMAQI
26th Jul 2025761 PMAQI
26th Jul 2025832 PMAQI
26th Jul 2025783 PMAQI
26th Jul 2025784 PMAQI
26th Jul 2025685 PMAQI
26th Jul 2025606 PMAQI
26th Jul 2025697 PMAQI
26th Jul 2025628 PMAQI
26th Jul 2025529 PMAQI
26th Jul 20255210 PMAQI
26th Jul 20255211 PMAQI
27th Jul 20255112 AMAQI
27th Jul 2025571 AMAQI
27th Jul 2025582 AMAQI
27th Jul 2025613 AMAQI
24°C22/28°C
27th Jul 2025634 AMAQI
27th Jul 2025645 AMAQI
27th Jul 2025636 AMAQI
27th Jul 2025647 AMAQI
27th Jul 2025518 AMAQI
27th Jul 2025359 AMAQI
27th Jul 20254410 AMAQI
27th Jul 20254611 AMAQI
27th Jul 20254812 PMAQI
27th Jul 2025431 PMAQI
27th Jul 2025522 PMAQI
27th Jul 2025483 PMAQI
27th Jul 2025634 PMAQI
27th Jul 2025655 PMAQI
27th Jul 2025496 PMAQI
27th Jul 2025397 PMAQI
27th Jul 2025528 PMAQI
27th Jul 2025569 PMAQI
27th Jul 20255410 PMAQI
27th Jul 20255511 PMAQI
28th Jul 20255512 AMAQI
28th Jul 2025601 AMAQI
28th Jul 2025602 AMAQI
28th Jul 2025593 AMAQI
23°C21/26°C
28th Jul 2025584 AMAQI
28th Jul 2025585 AMAQI
28th Jul 2025576 AMAQI
28th Jul 2025587 AMAQI
28th Jul 2025368 AMAQI
28th Jul 2025279 AMAQI
28th Jul 20253010 AMAQI
28th Jul 20252311 AMAQI
28th Jul 20252512 PMAQI
28th Jul 2025241 PMAQI
28th Jul 2025222 PMAQI
28th Jul 2025213 PMAQI
28th Jul 2025254 PMAQI
28th Jul 2025265 PMAQI
28th Jul 2025246 PMAQI
28th Jul 2025337 PMAQI
28th Jul 2025528 PMAQI
28th Jul 2025529 PMAQI
28th Jul 20255610 PMAQI
28th Jul 20255811 PMAQI
29th Jul 20255712 AMAQI
29th Jul 2025581 AMAQI
29th Jul 2025582 AMAQI
29th Jul 2025563 AMAQI
25°C22/29°C
29th Jul 2025544 AMAQI
29th Jul 2025545 AMAQI
29th Jul 2025546 AMAQI
29th Jul 2025547 AMAQI
29th Jul 2025318 AMAQI
29th Jul 2025279 AMAQI
29th Jul 20253810 AMAQI
29th Jul 20252311 AMAQI
29th Jul 20252212 PMAQI
29th Jul 2025221 PMAQI
29th Jul 2025372 PMAQI
29th Jul 2025303 PMAQI
29th Jul 2025284 PMAQI
29th Jul 2025265 PMAQI
29th Jul 2025346 PMAQI
29th Jul 2025517 PMAQI
29th Jul 2025638 PMAQI
29th Jul 2025549 PMAQI
29th Jul 20255310 PMAQI
29th Jul 20255411 PMAQI
30th Jul 20255512 AMAQI
30th Jul 2025561 AMAQI
30th Jul 2025562 AMAQI
30th Jul 2025543 AMAQI
21°C18/23°C
30th Jul 2025534 AMAQI
30th Jul 2025535 AMAQI
30th Jul 2025526 AMAQI
30th Jul 2025537 AMAQI
30th Jul 2025468 AMAQI
30th Jul 2025319 AMAQI
30th Jul 20253410 AMAQI
30th Jul 20254611 AMAQI
30th Jul 20253812 PMAQI
30th Jul 2025471 PMAQI
30th Jul 2025302 PMAQI
30th Jul 2025373 PMAQI
30th Jul 2025304 PMAQI
30th Jul 2025305 PMAQI
30th Jul 2025386 PMAQI
30th Jul 2025417 PMAQI
30th Jul 2025508 PMAQI
30th Jul 2025569 PMAQI
30th Jul 20255810 PMAQI
30th Jul 20255611 PMAQI
31st Jul 20255412 AMAQI
31st Jul 2025551 AMAQI
31st Jul 2025552 AMAQI
31st Jul 2025553 AMAQI
21°C17/25°C
31st Jul 2025554 AMAQI
31st Jul 2025555 AMAQI
31st Jul 2025556 AMAQI
31st Jul 2025557 AMAQI
31st Jul 2025558 AMAQI
31st Jul 2025559 AMAQI
31st Jul 20253610 AMAQI
31st Jul 20253911 AMAQI
31st Jul 20253212 PMAQI
31st Jul 2025421 PMAQI
31st Jul 2025502 PMAQI
31st Jul 2025543 PMAQI
31st Jul 2025584 PMAQI
31st Jul 2025345 PMAQI
31st Jul 2025366 PMAQI
31st Jul 2025607 PMAQI
31st Jul 2025628 PMAQI
31st Jul 2025599 PMAQI
31st Jul 20256210 PMAQI
31st Jul 20256211 PMAQI
1st Aug 20256112 AMAQI
1st Aug 2025571 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025583 AMAQI
21°C18/25°C
1st Aug 2025594 AMAQI
1st Aug 2025595 AMAQI
1st Aug 2025596 AMAQI
1st Aug 2025587 AMAQI
1st Aug 2025768 AMAQI
1st Aug 2025699 AMAQI
1st Aug 20257110 AMAQI
1st Aug 20257311 AMAQI
1st Aug 20256812 PMAQI
1st Aug 2025661 PMAQI
1st Aug 2025642 PMAQI
1st Aug 2025623 PMAQI
1st Aug 2025614 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025566 PMAQI
1st Aug 2025607 PMAQI
1st Aug 2025628 PMAQI
1st Aug 2025669 PMAQI
1st Aug 20256710 PMAQI
1st Aug 20256711 PMAQI
2nd Aug 20256212 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025582 AMAQI
2nd Aug 2025603 AMAQI
24°C18/29°C
2nd Aug 2025604 AMAQI
2nd Aug 2025615 AMAQI
2nd Aug 2025606 AMAQI
2nd Aug 2025607 AMAQI
2nd Aug 2025788 AMAQI
2nd Aug 2025789 AMAQI
2nd Aug 20257310 AMAQI
2nd Aug 20257111 AMAQI
2nd Aug 20257212 PMAQI
2nd Aug 2025671 PMAQI
2nd Aug 2025682 PMAQI
2nd Aug 2025693 PMAQI
2nd Aug 2025704 PMAQI
2nd Aug 2025645 PMAQI
2nd Aug 2025636 PMAQI
2nd Aug 2025667 PMAQI
2nd Aug 2025628 PMAQI
2nd Aug 2025619 PMAQI
2nd Aug 20256210 PMAQI
2nd Aug 20256011 PMAQI
3rd Aug 20256312 AMAQI
3rd Aug 2025591 AMAQI
3rd Aug 2025592 AMAQI
3rd Aug 2025613 AMAQI
24°C20/29°C
3rd Aug 2025624 AMAQI
3rd Aug 2025615 AMAQI
3rd Aug 2025626 AMAQI
3rd Aug 2025617 AMAQI
3rd Aug 2025608 AMAQI
3rd Aug 2025649 AMAQI
3rd Aug 20256310 AMAQI
3rd Aug 20255811 AMAQI
3rd Aug 20256912 PMAQI
3rd Aug 2025581 PMAQI
3rd Aug 2025552 PMAQI
3rd Aug 2025623 PMAQI
3rd Aug 2025584 PMAQI
3rd Aug 2025665 PMAQI
3rd Aug 2025626 PMAQI
3rd Aug 2025677 PMAQI
3rd Aug 2025648 PMAQI
3rd Aug 2025629 PMAQI
3rd Aug 20256210 PMAQI
3rd Aug 20256411 PMAQI
4th Aug 20256012 AMAQI
4th Aug 2025601 AMAQI
4th Aug 2025602 AMAQI
4th Aug 2025603 AMAQI
24°C21/27°C
4th Aug 2025604 AMAQI
4th Aug 2025595 AMAQI
4th Aug 2025596 AMAQI
4th Aug 2025607 AMAQI
4th Aug 2025658 AMAQI
4th Aug 2025689 AMAQI
4th Aug 20256910 AMAQI
4th Aug 20256711 AMAQI
4th Aug 20257012 PMAQI
4th Aug 2025691 PMAQI
4th Aug 2025622 PMAQI
4th Aug 2025603 PMAQI
4th Aug 2025534 PMAQI
4th Aug 2025585 PMAQI
4th Aug 2025626 PMAQI
4th Aug 2025627 PMAQI
4th Aug 2025628 PMAQI
4th Aug 2025639 PMAQI
4th Aug 20256410 PMAQI
4th Aug 20256211 PMAQI
5th Aug 20255912 AMAQI
5th Aug 2025591 AMAQI
5th Aug 2025592 AMAQI
5th Aug 2025593 AMAQI
24°C21/27°C
5th Aug 2025614 AMAQI
5th Aug 2025615 AMAQI
5th Aug 2025626 AMAQI
5th Aug 2025607 AMAQI
5th Aug 2025618 AMAQI
5th Aug 2025569 AMAQI
5th Aug 20255610 AMAQI
5th Aug 20254911 AMAQI
5th Aug 20255112 PMAQI
5th Aug 2025551 PMAQI
5th Aug 2025502 PMAQI
5th Aug 2025563 PMAQI
5th Aug 2025594 PMAQI
5th Aug 2025525 PMAQI
5th Aug 2025536 PMAQI
5th Aug 2025557 PMAQI
5th Aug 2025608 PMAQI
5th Aug 2025629 PMAQI
5th Aug 20256410 PMAQI
5th Aug 20256611 PMAQI
6th Aug 20256212 AMAQI
6th Aug 2025601 AMAQI
6th Aug 2025602 AMAQI
6th Aug 2025603 AMAQI
24°C22/29°C
6th Aug 2025594 AMAQI
6th Aug 2025605 AMAQI
6th Aug 2025606 AMAQI
6th Aug 2025607 AMAQI
6th Aug 2025748 AMAQI
6th Aug 2025659 AMAQI
6th Aug 20256810 AMAQI
6th Aug 20256611 AMAQI
6th Aug 20256912 PMAQI
6th Aug 2025621 PMAQI
6th Aug 2025742 PMAQI
6th Aug 2025523 PMAQI
6th Aug 2025544 PMAQI
6th Aug 2025605 PMAQI
6th Aug 2025576 PMAQI
6th Aug 2025567 PMAQI
6th Aug 2025588 PMAQI
6th Aug 2025629 PMAQI
6th Aug 20256110 PMAQI
6th Aug 20256111 PMAQI
7th Aug 20256512 AMAQI
7th Aug 2025611 AMAQI
7th Aug 2025602 AMAQI
7th Aug 2025603 AMAQI
26°C20/32°C
7th Aug 2025624 AMAQI
4 AM7th Aug 2025625 AMAQI
7th Aug 2025606 AMAQI
7th Aug 2025627 AMAQI
7th Aug 2025558 AMAQI
7th Aug 2025609 AMAQI
7th Aug 20256010 AMAQI
7th Aug 20256011 AMAQI
11 AM7th Aug 20256612 PMAQI
7th Aug 2025551 PMAQI
7th Aug 2025382 PMAQI
7th Aug 2025393 PMAQI
7th Aug 2025384 PMAQI
7th Aug 2025535 PMAQI
7th Aug 2025346 PMAQI
7 PM
11 PM
3 AM
--°C/°C
Day time
Avg. Highest Time
4 AM - 8 AM
60AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
6 PM
51AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 60), while the lowest AQI was between 6 PM to 6 PM (Avg. 51).
Night time
Avg. Highest Time
12 AM - 11 PM
61AQI
8 hours / Day
240 hours / Month
Avg. Lowest Time
12 AM - 11 PM
61AQI
8 hours / Day
240 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
Railway, Chengde, Hebei, China
2025
13%
29
76%
166
10%
21
0.9%
2
Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)
Good
29 DaysModerate
166 DaysPoor
21 DaysUnhealthy
2 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 13%
Health Risk Level:
Extreme
In 2025, 13% of 219 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, Chengde, 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
96AQI
96AQI
2nd January 2025
67AQI
67AQI
3rd January 2025
83AQI
83AQI
4th January 2025
99AQI
99AQI
5th January 2025
86AQI
86AQI
6th January 2025
59AQI
59AQI
7th January 2025
62AQI
62AQI
8th January 2025
48AQI
48AQI
9th January 2025
47AQI
47AQI
10th January 2025
53AQI
53AQI
11th January 2025
69AQI
69AQI
12th January 2025
70AQI
70AQI
13th January 2025
78AQI
78AQI
14th January 2025
60AQI
60AQI
15th January 2025
66AQI
66AQI
16th January 2025
83AQI
83AQI
17th January 2025
102AQI
102AQI
18th January 2025
120AQI
120AQI
19th January 2025
92AQI
92AQI
20th January 2025
114AQI
114AQI
21st January 2025
92AQI
92AQI
22nd January 2025
90AQI
90AQI
23rd January 2025
119AQI
119AQI
24th January 2025
137AQI
137AQI
25th January 2025
155AQI
155AQI
26th January 2025
101AQI
101AQI
27th January 2025
74AQI
74AQI
28th January 2025
69AQI
69AQI
29th January 2025
103AQI
103AQI
30th January 2025
74AQI
74AQI
31st January 2025
115AQI
115AQI
1st February 2025
124AQI
124AQI
2nd February 2025
90AQI
90AQI
3rd February 2025
68AQI
68AQI
4th February 2025
58AQI
58AQI
5th February 2025
52AQI
52AQI
6th February 2025
56AQI
56AQI
7th February 2025
43AQI
43AQI
8th February 2025
40AQI
40AQI
9th February 2025
50AQI
50AQI
10th February 2025
81AQI
81AQI
11th February 2025
117AQI
117AQI
12th February 2025
76AQI
76AQI
13th February 2025
97AQI
97AQI
14th February 2025
82AQI
82AQI
15th February 2025
98AQI
98AQI
16th February 2025
52AQI
52AQI
17th February 2025
60AQI
60AQI
18th February 2025
55AQI
55AQI
19th February 2025
53AQI
53AQI
20th February 2025
50AQI
50AQI
21st February 2025
47AQI
47AQI
22nd February 2025
50AQI
50AQI
23rd February 2025
41AQI
41AQI
24th February 2025
57AQI
57AQI
25th February 2025
59AQI
59AQI
26th February 2025
69AQI
69AQI
27th February 2025
109AQI
109AQI
28th February 2025
115AQI
115AQI
1st March 2025
148AQI
148AQI
2nd March 2025
84AQI
84AQI
3rd March 2025
94AQI
94AQI
4th March 2025
93AQI
93AQI
5th March 2025
87AQI
87AQI
6th March 2025
65AQI
65AQI
7th March 2025
84AQI
84AQI
8th March 2025
116AQI
116AQI
9th March 2025
129AQI
129AQI
10th March 2025
150AQI
150AQI
11th March 2025
161AQI
161AQI
12th March 2025
84AQI
84AQI
13th March 2025
104AQI
104AQI
14th March 2025
105AQI
105AQI
15th March 2025
77AQI
77AQI
16th March 2025
72AQI
72AQI
17th March 2025
60AQI
60AQI
18th March 2025
51AQI
51AQI
19th March 2025
53AQI
53AQI
20th March 2025
45AQI
45AQI
21st March 2025
48AQI
48AQI
22nd March 2025
50AQI
50AQI
23rd March 2025
90AQI
90AQI
24th March 2025
51AQI
51AQI
25th March 2025
56AQI
56AQI
26th March 2025
88AQI
88AQI
27th March 2025
54AQI
54AQI
28th March 2025
60AQI
60AQI
29th March 2025
48AQI
48AQI
30th March 2025
54AQI
54AQI
31st March 2025
60AQI
60AQI
1st April 2025
57AQI
57AQI
2nd April 2025
47AQI
47AQI
3rd April 2025
57AQI
57AQI
4th April 2025
68AQI
68AQI
5th April 2025
45AQI
45AQI
6th April 2025
61AQI
61AQI
7th April 2025
70AQI
70AQI
8th April 2025
54AQI
54AQI
9th April 2025
69AQI
69AQI
10th April 2025
66AQI
66AQI
11th April 2025
105AQI
105AQI
12th April 2025
69AQI
69AQI
13th April 2025
70AQI
70AQI
14th April 2025
59AQI
59AQI
15th April 2025
75AQI
75AQI
16th April 2025
83AQI
83AQI
17th April 2025
78AQI
78AQI
18th April 2025
57AQI
57AQI
19th April 2025
54AQI
54AQI
20th April 2025
69AQI
69AQI
21st April 2025
85AQI
85AQI
22nd April 2025
55AQI
55AQI
23rd April 2025
72AQI
72AQI
24th April 2025
48AQI
48AQI
25th April 2025
54AQI
54AQI
26th April 2025
81AQI
81AQI
27th April 2025
46AQI
46AQI
28th April 2025
56AQI
56AQI
29th April 2025
62AQI
62AQI
30th April 2025
57AQI
57AQI
1st May 2025
51AQI
51AQI
2nd May 2025
63AQI
63AQI
3rd May 2025
50AQI
50AQI
4th May 2025
55AQI
55AQI
5th May 2025
71AQI
71AQI
6th May 2025
55AQI
55AQI
7th May 2025
85AQI
85AQI
8th May 2025
103AQI
103AQI
9th May 2025
64AQI
64AQI
10th May 2025
74AQI
74AQI
11th May 2025
72AQI
72AQI
12th May 2025
78AQI
78AQI
13th May 2025
92AQI
92AQI
14th May 2025
66AQI
66AQI
15th May 2025
72AQI
72AQI
16th May 2025
95AQI
95AQI
17th May 2025
66AQI
66AQI
18th May 2025
63AQI
63AQI
19th May 2025
65AQI
65AQI
20th May 2025
99AQI
99AQI
21st May 2025
84AQI
84AQI
22nd May 2025
106AQI
106AQI
23rd May 2025
76AQI
76AQI
24th May 2025
70AQI
70AQI
25th May 2025
79AQI
79AQI
26th May 2025
79AQI
79AQI
27th May 2025
67AQI
67AQI
28th May 2025
75AQI
75AQI
29th May 2025
92AQI
92AQI
30th May 2025
99AQI
99AQI
31st May 2025
98AQI
98AQI
1st June 2025
91AQI
91AQI
2nd June 2025
72AQI
72AQI
3rd June 2025
53AQI
53AQI
4th June 2025
52AQI
52AQI
5th June 2025
54AQI
54AQI
6th June 2025
52AQI
52AQI
7th June 2025
59AQI
59AQI
8th June 2025
57AQI
57AQI
9th June 2025
68AQI
68AQI
10th June 2025
50AQI
50AQI
11th June 2025
62AQI
62AQI
12th June 2025
77AQI
77AQI
13th June 2025
74AQI
74AQI
14th June 2025
81AQI
81AQI
15th June 2025
57AQI
57AQI
16th June 2025
55AQI
55AQI
17th June 2025
61AQI
61AQI
18th June 2025
68AQI
68AQI
19th June 2025
65AQI
65AQI
20th June 2025
56AQI
56AQI
21st June 2025
49AQI
49AQI
22nd June 2025
46AQI
46AQI
23rd June 2025
55AQI
55AQI
24th June 2025
65AQI
65AQI
25th June 2025
76AQI
76AQI
26th June 2025
69AQI
69AQI
27th June 2025
79AQI
79AQI
28th June 2025
64AQI
64AQI
29th June 2025
74AQI
74AQI
30th June 2025
69AQI
69AQI
1st July 2025
65AQI
65AQI
2nd July 2025
66AQI
66AQI
3rd July 2025
62AQI
62AQI
4th July 2025
61AQI
61AQI
5th July 2025
58AQI
58AQI
6th July 2025
48AQI
48AQI
7th July 2025
56AQI
56AQI
8th July 2025
59AQI
59AQI
9th July 2025
66AQI
66AQI
10th July 2025
79AQI
79AQI
11th July 2025
74AQI
74AQI
12th July 2025
80AQI
80AQI
13th July 2025
60AQI
60AQI
14th July 2025
55AQI
55AQI
15th July 2025
58AQI
58AQI
16th July 2025
51AQI
51AQI
17th July 2025
48AQI
48AQI
18th July 2025
49AQI
49AQI
19th July 2025
63AQI
63AQI
20th July 2025
51AQI
51AQI
21st July 2025
47AQI
47AQI
22nd July 2025
57AQI
57AQI
23rd July 2025
63AQI
63AQI
24th July 2025
50AQI
50AQI
25th July 2025
58AQI
58AQI
26th July 2025
65AQI
65AQI
27th July 2025
54AQI
54AQI
28th July 2025
43AQI
43AQI
29th July 2025
45AQI
45AQI
30th July 2025
47AQI
47AQI
31st July 2025
52AQI
52AQI
1st August 2025
62AQI
62AQI
2nd August 2025
64AQI
64AQI
3rd August 2025
62AQI
62AQI
4th August 2025
62AQI
62AQI
5th August 2025
58AQI
58AQI
6th August 2025
61AQI
61AQI
87AQI
70AQI
81AQI
64AQI
76AQI
64AQI
58AQI
62AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202571AQI
2
20
8
1
7
17
4
4
20
6
1
4
25
1
1
28
2
3
27
8
23
6
29
166
21
2
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
July58AQI
202473AQI
7
11
9
4
3
13
10
3
4
19
6
2
10
15
5
10
18
3
8
18
4
8
20
3
17
14
21
9
11
14
5
1
4
17
6
3
2
27
2
105
195
53
13
Highest AQI recorded in
February93AQI
Lowest AQI recorded in
September45AQI
202380AQI
1
12
15
3
14
10
4
17
10
3
1
1
19
5
3
2
4
24
2
1
13
15
2
12
17
2
15
16
15
11
4
15
12
4
13
9
4
3
5
14
8
4
94
180
62
24
4
Highest AQI recorded in
February105AQI
Lowest AQI recorded in
August53AQI
202283AQI
14
11
6
15
6
21
9
1
3
18
8
1
2
28
1
4
18
8
5
19
1
8
17
4
12
8
11
4
16
7
3
3
22
6
41
197
71
11
Highest AQI recorded in
January110AQI
Lowest AQI recorded in
August51AQI
202185AQI
15
10
6
15
9
4
10
9
9
1
2
1
21
7
1
1
24
4
1
1
1
28
1
11
19
1
11
20
7
12
14
13
4
3
13
11
3
2
15
13
1
51
205
69
24
2
3
Highest AQI recorded in
March135AQI
Lowest AQI recorded in
July53AQI
202076AQI
2
9
1
1
4
14
3
8
6
4
5
22
3
1
24
6
5
25
1
15
14
1
7
16
5
3
2
19
8
1
4
17
9
1
53
166
41
6
Highest AQI recorded in
December90AQI
Lowest AQI recorded in
September57AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
85AQILeast Polluted Year Recorded
2025(Avg.)
71AQIRailway's annual 2025 AQI (71) shows an average percentage change of -9.9% (improved AQI) compared to previous years: 2020 (76), 2021 (85), 2022 (83), 2023 (80), 2024 (73).
