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HistoryAQIPM2.5PM10COSO2NO2O3

Lake District, Hefei, Anhui, 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+

October Air Quality Analysis

Lake District, Hefei, Anhui, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
27th Oct 2023
166AQI
Lowest AQI recorded on
5th Oct 2022
22AQI

Same Day Analysis (10th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 102 of Poor air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 10th Oct - 11th Oct 2025

Lake District, Hefei, Anhui, China

AQI
Day
Night
.

6 AM10th Oct 2025

6 PM

5 AM11th Oct 2025

Day time
Avg. Highest Time
2PM10th Oct

142AQI

Avg. Lowest Time
6AM10th Oct

88AQI

Night time
Avg. Highest Time
4AM11th Oct

171AQI

Avg. Lowest Time
7PM10th Oct

142AQI

In the last 24 hours,

Lake District's AQI reached its highest point of 171 at 4 AM during the Night, while the lowest point, 88, was recorded at 6 AM during the Day between 10th Oct and 11th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

Lake District, Hefei, Anhui, China

SepOct
11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
11th Sep 2025606 AMAQI
11th Sep 2025607 AMAQI
11th Sep 2025598 AMAQI
11th Sep 2025609 AMAQI
11th Sep 20256010 AMAQI
11th Sep 20256311 AMAQI
11th Sep 20255812 PMAQI
11th Sep 2025581 PMAQI
11th Sep 2025602 PMAQI
11th Sep 2025603 PMAQI
11th Sep 2025584 PMAQI
11th Sep 2025555 PMAQI
11th Sep 2025586 PMAQI
11th Sep 2025597 PMAQI
11th Sep 2025628 PMAQI
11th Sep 2025619 PMAQI
11th Sep 20255910 PMAQI
11th Sep 20256011 PMAQI
12th Sep 20255812 AMAQI
12th Sep 2025601 AMAQI
12th Sep 2025602 AMAQI
12th Sep 2025593 AMAQI
12th Sep 2025594 AMAQI
12th Sep 2025585 AMAQI

25°C23/29°C

12th Sep 2025596 AMAQI
12th Sep 2025587 AMAQI
12th Sep 2025638 AMAQI
12th Sep 2025629 AMAQI
12th Sep 20256610 AMAQI
12th Sep 20256411 AMAQI
12th Sep 20256012 PMAQI
12th Sep 2025561 PMAQI
12th Sep 2025542 PMAQI
12th Sep 2025563 PMAQI
12th Sep 2025514 PMAQI
12th Sep 2025515 PMAQI
12th Sep 2025566 PMAQI
12th Sep 2025567 PMAQI
12th Sep 2025578 PMAQI
12th Sep 2025579 PMAQI
12th Sep 20255610 PMAQI
12th Sep 20255611 PMAQI
13th Sep 20255812 AMAQI
13th Sep 2025581 AMAQI
13th Sep 2025592 AMAQI
13th Sep 2025583 AMAQI
13th Sep 2025594 AMAQI
13th Sep 2025595 AMAQI

25°C22/27°C

13th Sep 2025586 AMAQI
13th Sep 2025587 AMAQI
13th Sep 2025568 AMAQI
13th Sep 2025639 AMAQI
13th Sep 20256310 AMAQI
13th Sep 20255911 AMAQI
13th Sep 20255712 PMAQI
13th Sep 2025571 PMAQI
13th Sep 2025572 PMAQI
13th Sep 2025523 PMAQI
13th Sep 2025434 PMAQI
13th Sep 2025435 PMAQI
13th Sep 2025416 PMAQI
13th Sep 2025527 PMAQI
13th Sep 2025578 PMAQI
13th Sep 2025589 PMAQI
13th Sep 20256010 PMAQI
13th Sep 20255811 PMAQI
14th Sep 20255712 AMAQI
14th Sep 2025581 AMAQI
14th Sep 2025582 AMAQI
14th Sep 2025583 AMAQI
14th Sep 2025584 AMAQI
14th Sep 2025585 AMAQI

24°C21/28°C

14th Sep 2025586 AMAQI
14th Sep 2025587 AMAQI
14th Sep 2025688 AMAQI
14th Sep 2025749 AMAQI
14th Sep 20256910 AMAQI
14th Sep 20256311 AMAQI
14th Sep 20256112 PMAQI
14th Sep 2025581 PMAQI
14th Sep 2025602 PMAQI
14th Sep 2025493 PMAQI
14th Sep 2025524 PMAQI
14th Sep 2025445 PMAQI
14th Sep 2025556 PMAQI
14th Sep 2025537 PMAQI
14th Sep 2025528 PMAQI
14th Sep 2025549 PMAQI
14th Sep 20255110 PMAQI
14th Sep 20255611 PMAQI
15th Sep 20255412 AMAQI
15th Sep 2025581 AMAQI
15th Sep 2025582 AMAQI
15th Sep 2025593 AMAQI
15th Sep 2025584 AMAQI
15th Sep 2025585 AMAQI

25°C23/28°C

15th Sep 2025586 AMAQI
15th Sep 2025587 AMAQI
15th Sep 2025558 AMAQI
15th Sep 2025529 AMAQI
15th Sep 20255810 AMAQI
15th Sep 20254411 AMAQI
15th Sep 20255212 PMAQI
15th Sep 2025521 PMAQI
15th Sep 2025512 PMAQI
15th Sep 2025563 PMAQI
15th Sep 2025584 PMAQI
15th Sep 2025565 PMAQI
15th Sep 2025566 PMAQI
15th Sep 2025627 PMAQI
15th Sep 2025628 PMAQI
15th Sep 2025669 PMAQI
15th Sep 20256410 PMAQI
15th Sep 20256611 PMAQI
16th Sep 20255912 AMAQI
16th Sep 2025581 AMAQI
16th Sep 2025582 AMAQI
16th Sep 2025583 AMAQI
16th Sep 2025584 AMAQI
16th Sep 2025585 AMAQI

28°C24/33°C

16th Sep 2025586 AMAQI
16th Sep 2025587 AMAQI
16th Sep 2025708 AMAQI
16th Sep 2025789 AMAQI
16th Sep 20257610 AMAQI
16th Sep 20257811 AMAQI
16th Sep 20257412 PMAQI
16th Sep 2025741 PMAQI
16th Sep 2025742 PMAQI
16th Sep 2025673 PMAQI
16th Sep 2025624 PMAQI
16th Sep 2025685 PMAQI
16th Sep 2025776 PMAQI
16th Sep 2025727 PMAQI
16th Sep 2025708 PMAQI
16th Sep 2025729 PMAQI
16th Sep 20257010 PMAQI
16th Sep 20257411 PMAQI
17th Sep 20256912 AMAQI
17th Sep 2025581 AMAQI
17th Sep 2025582 AMAQI
17th Sep 2025603 AMAQI
17th Sep 2025624 AMAQI
17th Sep 2025625 AMAQI

30°C25/35°C

17th Sep 2025626 AMAQI
17th Sep 2025627 AMAQI
17th Sep 2025548 AMAQI
17th Sep 2025449 AMAQI
17th Sep 20254510 AMAQI
17th Sep 20255111 AMAQI
17th Sep 20255512 PMAQI
17th Sep 2025511 PMAQI
17th Sep 2025562 PMAQI
17th Sep 2025563 PMAQI
17th Sep 2025564 PMAQI
17th Sep 2025655 PMAQI
17th Sep 2025676 PMAQI
17th Sep 2025567 PMAQI
17th Sep 2025568 PMAQI
17th Sep 2025599 PMAQI
17th Sep 20256210 PMAQI
17th Sep 20255711 PMAQI
18th Sep 20255812 AMAQI
18th Sep 2025611 AMAQI
18th Sep 2025612 AMAQI
18th Sep 2025603 AMAQI
18th Sep 2025604 AMAQI
18th Sep 2025595 AMAQI

25°C21/29°C

18th Sep 2025606 AMAQI
18th Sep 2025607 AMAQI
18th Sep 2025518 AMAQI
18th Sep 2025489 AMAQI
18th Sep 20254410 AMAQI
18th Sep 20254511 AMAQI
18th Sep 20254412 PMAQI
18th Sep 2025361 PMAQI
18th Sep 2025472 PMAQI
18th Sep 2025413 PMAQI
18th Sep 2025474 PMAQI
18th Sep 2025475 PMAQI
18th Sep 2025546 PMAQI
18th Sep 2025557 PMAQI
18th Sep 2025588 PMAQI
18th Sep 2025579 PMAQI
18th Sep 20255410 PMAQI
18th Sep 20255611 PMAQI
19th Sep 20255612 AMAQI
19th Sep 2025601 AMAQI
19th Sep 2025602 AMAQI
19th Sep 2025593 AMAQI
19th Sep 2025574 AMAQI
19th Sep 2025585 AMAQI

22°C20/24°C

19th Sep 2025576 AMAQI
19th Sep 2025577 AMAQI
19th Sep 2025548 AMAQI
19th Sep 2025629 AMAQI
19th Sep 20256010 AMAQI
19th Sep 20256311 AMAQI
19th Sep 20256612 PMAQI
19th Sep 2025701 PMAQI
19th Sep 2025762 PMAQI
19th Sep 2025723 PMAQI
19th Sep 2025704 PMAQI
19th Sep 2025795 PMAQI
19th Sep 2025586 PMAQI
19th Sep 2025467 PMAQI
19th Sep 2025528 PMAQI
19th Sep 2025519 PMAQI
19th Sep 20255210 PMAQI
19th Sep 20255411 PMAQI
20th Sep 20255512 AMAQI
20th Sep 2025571 AMAQI
20th Sep 2025582 AMAQI
20th Sep 2025583 AMAQI
20th Sep 2025584 AMAQI
20th Sep 2025585 AMAQI

21°C17/25°C

20th Sep 2025586 AMAQI
20th Sep 2025597 AMAQI
20th Sep 2025438 AMAQI
20th Sep 2025369 AMAQI
20th Sep 20255310 AMAQI
20th Sep 20255011 AMAQI
20th Sep 20255412 PMAQI
20th Sep 2025541 PMAQI
20th Sep 2025552 PMAQI
20th Sep 2025583 PMAQI
20th Sep 2025574 PMAQI
20th Sep 2025585 PMAQI
20th Sep 2025586 PMAQI
20th Sep 2025547 PMAQI
20th Sep 2025588 PMAQI
20th Sep 2025629 PMAQI
20th Sep 20256110 PMAQI
20th Sep 20256411 PMAQI
21st Sep 20256312 AMAQI
21st Sep 2025581 AMAQI
21st Sep 2025582 AMAQI
21st Sep 2025573 AMAQI
21st Sep 2025564 AMAQI
21st Sep 2025565 AMAQI

20°C17/24°C

21st Sep 2025566 AMAQI
21st Sep 2025567 AMAQI
21st Sep 2025728 AMAQI
21st Sep 2025829 AMAQI
21st Sep 20257710 AMAQI
21st Sep 20257911 AMAQI
21st Sep 20257412 PMAQI
21st Sep 2025751 PMAQI
21st Sep 2025702 PMAQI
21st Sep 2025673 PMAQI
21st Sep 2025644 PMAQI
21st Sep 2025615 PMAQI
21st Sep 2025746 PMAQI
21st Sep 2025747 PMAQI
21st Sep 2025708 PMAQI
21st Sep 2025749 PMAQI
21st Sep 20257410 PMAQI
21st Sep 20257211 PMAQI
22nd Sep 20257412 AMAQI
22nd Sep 2025571 AMAQI
22nd Sep 2025562 AMAQI
22nd Sep 2025583 AMAQI
22nd Sep 2025604 AMAQI
22nd Sep 2025605 AMAQI

20°C19/22°C

22nd Sep 2025606 AMAQI
22nd Sep 2025607 AMAQI
22nd Sep 2025568 AMAQI
22nd Sep 2025659 AMAQI
22nd Sep 20255710 AMAQI
22nd Sep 20255311 AMAQI
22nd Sep 20255212 PMAQI
22nd Sep 2025561 PMAQI
22nd Sep 2025622 PMAQI
22nd Sep 2025683 PMAQI
22nd Sep 2025634 PMAQI
22nd Sep 2025625 PMAQI
22nd Sep 2025586 PMAQI
22nd Sep 2025637 PMAQI
22nd Sep 2025628 PMAQI
22nd Sep 2025649 PMAQI
22nd Sep 20256410 PMAQI
22nd Sep 20256411 PMAQI
23rd Sep 20256612 AMAQI
23rd Sep 2025621 AMAQI
23rd Sep 2025602 AMAQI
23rd Sep 2025603 AMAQI
23rd Sep 2025594 AMAQI
23rd Sep 2025605 AMAQI

24°C20/28°C

23rd Sep 2025606 AMAQI
23rd Sep 2025607 AMAQI
23rd Sep 2025768 AMAQI
23rd Sep 2025869 AMAQI
23rd Sep 20258210 AMAQI
23rd Sep 20258311 AMAQI
23rd Sep 20258412 PMAQI
23rd Sep 2025861 PMAQI
23rd Sep 2025842 PMAQI
23rd Sep 2025823 PMAQI
23rd Sep 2025884 PMAQI
23rd Sep 2025895 PMAQI
23rd Sep 20251056 PMAQI
23rd Sep 2025977 PMAQI
23rd Sep 2025908 PMAQI
23rd Sep 2025849 PMAQI
23rd Sep 20257810 PMAQI
23rd Sep 20257011 PMAQI
24th Sep 20256112 AMAQI
24th Sep 2025601 AMAQI
24th Sep 2025602 AMAQI
24th Sep 2025633 AMAQI
24th Sep 2025654 AMAQI
24th Sep 2025655 AMAQI

24°C20/30°C

24th Sep 2025656 AMAQI
24th Sep 2025657 AMAQI
24th Sep 2025448 AMAQI
24th Sep 2025359 AMAQI
24th Sep 20251910 AMAQI
24th Sep 20253111 AMAQI
24th Sep 20253412 PMAQI
24th Sep 2025401 PMAQI
24th Sep 2025342 PMAQI
24th Sep 2025363 PMAQI
24th Sep 2025394 PMAQI
24th Sep 2025425 PMAQI
24th Sep 2025526 PMAQI
24th Sep 2025507 PMAQI
24th Sep 2025598 PMAQI
24th Sep 2025629 PMAQI
24th Sep 20255910 PMAQI
24th Sep 20255911 PMAQI
25th Sep 20255712 AMAQI
25th Sep 2025611 AMAQI
25th Sep 2025622 AMAQI
25th Sep 2025613 AMAQI
25th Sep 2025584 AMAQI
25th Sep 2025585 AMAQI

20°C19/20°C

25th Sep 2025586 AMAQI
25th Sep 2025587 AMAQI
25th Sep 2025368 AMAQI
25th Sep 2025219 AMAQI
25th Sep 20252010 AMAQI
25th Sep 20253911 AMAQI
25th Sep 20253212 PMAQI
25th Sep 2025231 PMAQI
25th Sep 2025282 PMAQI
25th Sep 2025283 PMAQI
25th Sep 2025284 PMAQI
25th Sep 2025335 PMAQI
25th Sep 2025396 PMAQI
25th Sep 2025407 PMAQI
25th Sep 2025398 PMAQI
25th Sep 2025549 PMAQI
25th Sep 20255810 PMAQI
25th Sep 20255411 PMAQI
26th Sep 20255212 AMAQI
26th Sep 2025511 AMAQI
26th Sep 2025552 AMAQI
26th Sep 2025533 AMAQI
26th Sep 2025564 AMAQI
26th Sep 2025625 AMAQI

21°C20/23°C

26th Sep 2025606 AMAQI
26th Sep 2025687 AMAQI
26th Sep 2025748 AMAQI
26th Sep 2025819 AMAQI
26th Sep 20257110 AMAQI
26th Sep 20257611 AMAQI
26th Sep 20257812 PMAQI
26th Sep 2025631 PMAQI
26th Sep 2025562 PMAQI
26th Sep 2025683 PMAQI
26th Sep 2025664 PMAQI
26th Sep 2025605 PMAQI
26th Sep 2025586 PMAQI
26th Sep 2025597 PMAQI
26th Sep 2025688 PMAQI
26th Sep 2025709 PMAQI
26th Sep 20256710 PMAQI
26th Sep 20255711 PMAQI
27th Sep 20255112 AMAQI
27th Sep 2025501 AMAQI
27th Sep 2025412 AMAQI
27th Sep 2025403 AMAQI
27th Sep 2025564 AMAQI
27th Sep 2025585 AMAQI

23°C22/25°C

27th Sep 2025596 AMAQI
27th Sep 2025637 AMAQI
27th Sep 2025678 AMAQI
27th Sep 2025709 AMAQI
27th Sep 20257410 AMAQI
27th Sep 20256911 AMAQI
27th Sep 20256612 PMAQI
27th Sep 2025651 PMAQI
27th Sep 2025572 PMAQI
27th Sep 2025633 PMAQI
27th Sep 2025634 PMAQI
27th Sep 2025635 PMAQI
27th Sep 2025686 PMAQI
27th Sep 2025737 PMAQI
27th Sep 2025728 PMAQI
27th Sep 2025729 PMAQI
27th Sep 20257010 PMAQI
27th Sep 20257211 PMAQI
28th Sep 20257212 AMAQI
28th Sep 2025681 AMAQI
28th Sep 2025692 AMAQI
28th Sep 2025703 AMAQI
28th Sep 2025754 AMAQI
28th Sep 2025725 AMAQI

25°C23/30°C

28th Sep 2025676 AMAQI
28th Sep 2025687 AMAQI
28th Sep 2025668 AMAQI
28th Sep 2025599 AMAQI
28th Sep 20255910 AMAQI
28th Sep 20256311 AMAQI
28th Sep 20255712 PMAQI
28th Sep 2025581 PMAQI
28th Sep 2025562 PMAQI
28th Sep 2025593 PMAQI
28th Sep 2025604 PMAQI
28th Sep 2025555 PMAQI
28th Sep 2025536 PMAQI
28th Sep 2025567 PMAQI
28th Sep 2025618 PMAQI
28th Sep 2025639 PMAQI
28th Sep 20256310 PMAQI
28th Sep 20256211 PMAQI
29th Sep 20256712 AMAQI
29th Sep 2025681 AMAQI
29th Sep 2025762 AMAQI
29th Sep 2025803 AMAQI
29th Sep 2025744 AMAQI
29th Sep 2025745 AMAQI

25°C23/29°C

29th Sep 2025846 AMAQI
29th Sep 2025897 AMAQI
29th Sep 2025868 AMAQI
29th Sep 2025829 AMAQI
29th Sep 20258110 AMAQI
29th Sep 20257411 AMAQI
29th Sep 20255812 PMAQI
29th Sep 2025581 PMAQI
29th Sep 2025682 PMAQI
29th Sep 2025703 PMAQI
29th Sep 2025664 PMAQI
29th Sep 2025705 PMAQI
29th Sep 2025806 PMAQI
29th Sep 2025897 PMAQI
29th Sep 2025878 PMAQI
29th Sep 2025889 PMAQI
29th Sep 20258410 PMAQI
29th Sep 20257711 PMAQI
30th Sep 20257612 AMAQI
30th Sep 2025771 AMAQI
30th Sep 2025882 AMAQI
30th Sep 2025883 AMAQI
30th Sep 2025814 AMAQI
30th Sep 2025615 AMAQI

21°C20/22°C

30th Sep 2025376 AMAQI
30th Sep 2025437 AMAQI
30th Sep 2025548 AMAQI
30th Sep 2025539 AMAQI
30th Sep 20253710 AMAQI
30th Sep 20254311 AMAQI
30th Sep 20254412 PMAQI
30th Sep 2025421 PMAQI
30th Sep 2025352 PMAQI
30th Sep 2025373 PMAQI
30th Sep 2025234 PMAQI
30th Sep 2025275 PMAQI
30th Sep 2025316 PMAQI
30th Sep 2025297 PMAQI
30th Sep 2025328 PMAQI
30th Sep 2025459 PMAQI
30th Sep 20255610 PMAQI
30th Sep 20254611 PMAQI
1st Oct 20254112 AMAQI
1st Oct 2025461 AMAQI
1st Oct 2025522 AMAQI
1st Oct 2025583 AMAQI
1st Oct 2025544 AMAQI
1st Oct 2025545 AMAQI

22°C20/25°C

1st Oct 2025566 AMAQI
1st Oct 2025577 AMAQI
1st Oct 2025598 AMAQI
1st Oct 2025669 AMAQI
1st Oct 20256910 AMAQI
1st Oct 20256911 AMAQI
1st Oct 20258012 PMAQI
1st Oct 2025921 PMAQI
1st Oct 2025922 PMAQI
1st Oct 2025883 PMAQI
1st Oct 2025844 PMAQI
1st Oct 2025835 PMAQI
1st Oct 2025826 PMAQI
1st Oct 2025757 PMAQI
1st Oct 2025798 PMAQI
1st Oct 2025869 PMAQI
1st Oct 20259010 PMAQI
1st Oct 20258911 PMAQI
2nd Oct 20258412 AMAQI
2nd Oct 2025821 AMAQI
2nd Oct 2025842 AMAQI
2nd Oct 2025943 AMAQI
2nd Oct 2025974 AMAQI
2nd Oct 2025985 AMAQI

23°C21/26°C

2nd Oct 2025956 AMAQI
2nd Oct 2025927 AMAQI
2nd Oct 2025978 AMAQI
2nd Oct 20251039 AMAQI
2nd Oct 20259710 AMAQI
2nd Oct 20259411 AMAQI
2nd Oct 20259212 PMAQI
2nd Oct 2025921 PMAQI
2nd Oct 2025872 PMAQI
2nd Oct 2025873 PMAQI
2nd Oct 2025884 PMAQI
2nd Oct 2025785 PMAQI
2nd Oct 2025686 PMAQI
2nd Oct 2025667 PMAQI
2nd Oct 2025568 PMAQI
2nd Oct 2025559 PMAQI
2nd Oct 20254710 PMAQI
2nd Oct 20254911 PMAQI
3rd Oct 20255212 AMAQI
3rd Oct 2025521 AMAQI
3rd Oct 2025552 AMAQI
3rd Oct 2025523 AMAQI
3rd Oct 2025494 AMAQI
3rd Oct 2025525 AMAQI

23°C19/27°C

3rd Oct 2025556 AMAQI
3rd Oct 2025567 AMAQI
3rd Oct 2025558 AMAQI
3rd Oct 2025579 AMAQI
3rd Oct 20255410 AMAQI
3rd Oct 20255611 AMAQI
3rd Oct 20255712 PMAQI
3rd Oct 2025561 PMAQI
3rd Oct 2025572 PMAQI
3rd Oct 2025583 PMAQI
3rd Oct 2025574 PMAQI
3rd Oct 2025565 PMAQI
3rd Oct 2025426 PMAQI
3rd Oct 2025417 PMAQI
3rd Oct 2025558 PMAQI
3rd Oct 2025559 PMAQI
3rd Oct 20255710 PMAQI
3rd Oct 20256211 PMAQI
4th Oct 20256112 AMAQI
4th Oct 2025581 AMAQI
4th Oct 2025622 AMAQI
4th Oct 2025673 AMAQI
4th Oct 2025664 AMAQI
4th Oct 2025605 AMAQI

21°C18/23°C

4th Oct 2025576 AMAQI
4th Oct 2025587 AMAQI
4th Oct 2025628 AMAQI
4th Oct 2025629 AMAQI
4th Oct 20256510 AMAQI
4th Oct 20256811 AMAQI
4th Oct 20256712 PMAQI
4th Oct 2025721 PMAQI
4th Oct 2025762 PMAQI
4th Oct 2025743 PMAQI
4th Oct 2025754 PMAQI
4th Oct 2025745 PMAQI
4th Oct 2025806 PMAQI
4th Oct 2025827 PMAQI
4th Oct 2025888 PMAQI
4th Oct 2025949 PMAQI
4th Oct 20258910 PMAQI
4th Oct 20258311 PMAQI
5th Oct 20259412 AMAQI
5th Oct 20251071 AMAQI
5th Oct 20251222 AMAQI
5th Oct 20251413 AMAQI
5th Oct 20251454 AMAQI
5th Oct 20251295 AMAQI

23°C20/27°C

5th Oct 20251346 AMAQI
5th Oct 20251207 AMAQI
5th Oct 20251318 AMAQI
5th Oct 20251419 AMAQI
5th Oct 202515210 AMAQI
5th Oct 202514811 AMAQI
5th Oct 202514612 PMAQI
5th Oct 20251361 PMAQI
5th Oct 20251212 PMAQI
5th Oct 20251063 PMAQI
5th Oct 2025994 PMAQI
5th Oct 20251125 PMAQI
5th Oct 20251076 PMAQI
5th Oct 20251127 PMAQI
5th Oct 20251178 PMAQI
5th Oct 20251429 PMAQI
5th Oct 202514310 PMAQI
5th Oct 202513711 PMAQI
6th Oct 202513012 AMAQI
6th Oct 20251251 AMAQI
6th Oct 20251312 AMAQI
6th Oct 20251403 AMAQI
6th Oct 20251454 AMAQI
6th Oct 20251515 AMAQI

27°C23/31°C

6th Oct 20251456 AMAQI
6th Oct 20251457 AMAQI
6th Oct 20251478 AMAQI
6th Oct 20251539 AMAQI
6th Oct 202515210 AMAQI
6th Oct 202515311 AMAQI
6th Oct 202513112 PMAQI
6th Oct 20251011 PMAQI
6th Oct 2025752 PMAQI
6th Oct 2025753 PMAQI
6th Oct 2025724 PMAQI
6th Oct 2025745 PMAQI
6th Oct 2025926 PMAQI
6th Oct 20251237 PMAQI
6th Oct 20251528 PMAQI
6th Oct 20251469 PMAQI
6th Oct 202515010 PMAQI
6th Oct 202514411 PMAQI
7th Oct 202513812 AMAQI
7th Oct 20251391 AMAQI

28°C25/32°C

7th Oct 20251127 PMAQI
7th Oct 20251448 PMAQI
7th Oct 20251139 PMAQI
7th Oct 20258110 PMAQI
7th Oct 20257611 PMAQI
8th Oct 20259012 AMAQI
8th Oct 2025811 AMAQI
8th Oct 2025822 AMAQI
8th Oct 2025853 AMAQI
8th Oct 2025874 AMAQI
8th Oct 2025855 AMAQI

26°C23/29°C

8th Oct 2025896 AMAQI
8th Oct 2025837 AMAQI
8th Oct 2025928 AMAQI
8th Oct 20251049 AMAQI
8th Oct 202510710 AMAQI
8th Oct 202511111 AMAQI
8th Oct 202512112 PMAQI
8th Oct 20251241 PMAQI
8th Oct 20251242 PMAQI
8th Oct 20251173 PMAQI
8th Oct 20251024 PMAQI
8th Oct 20251085 PMAQI
8th Oct 20251106 PMAQI
8th Oct 20251077 PMAQI
8th Oct 20251128 PMAQI
8th Oct 20251159 PMAQI
8th Oct 20259710 PMAQI
8th Oct 202510311 PMAQI
9th Oct 202510812 AMAQI
9th Oct 20251051 AMAQI
9th Oct 20251002 AMAQI
9th Oct 20251033 AMAQI
9th Oct 2025964 AMAQI
9th Oct 20251025 AMAQI

27°C24/31°C

9th Oct 20251026 AMAQI
9th Oct 2025967 AMAQI
9th Oct 20251078 AMAQI
9th Oct 2025999 AMAQI
9th Oct 20259410 AMAQI
9th Oct 20259511 AMAQI
9th Oct 20259412 PMAQI
9th Oct 2025911 PMAQI
9th Oct 2025982 PMAQI
9th Oct 2025893 PMAQI
9th Oct 2025814 PMAQI
9th Oct 2025795 PMAQI
9th Oct 2025836 PMAQI
9th Oct 2025867 PMAQI
9th Oct 2025948 PMAQI
9th Oct 20251049 PMAQI
9th Oct 202510410 PMAQI
9th Oct 202511011 PMAQI
10th Oct 202510612 AMAQI
10th Oct 20251021 AMAQI
10th Oct 20251062 AMAQI
10th Oct 2025893 AMAQI
10th Oct 2025904 AMAQI
10th Oct 2025985 AMAQI

27°C22/32°C

10th Oct 2025886 AMAQI
10th Oct 20251047 AMAQI
10th Oct 20251098 AMAQI
10th Oct 20251039 AMAQI
10th Oct 202511210 AMAQI
10th Oct 202511011 AMAQI
10th Oct 202511012 PMAQI
10th Oct 20251151 PMAQI
10th Oct 20251422 PMAQI
10th Oct 20251243 PMAQI
10th Oct 20251384 PMAQI
10th Oct 20251395 PMAQI
10th Oct 20251436 PMAQI
10th Oct 20251427 PMAQI
10th Oct 20251518 PMAQI
10th Oct 20251499 PMAQI
10th Oct 202514810 PMAQI
10th Oct 202515311 PMAQI
11th Oct 202515912 AMAQI
11th Oct 20251641 AMAQI
11th Oct 20251692 AMAQI
11th Oct 20251683 AMAQI
11th Oct 20251714 AMAQI
11th Oct 20251615 AMAQI

26°C23/30°C

11th Oct 20251526 AMAQI
6 AM
11th Oct 20251317 AMAQI
11th Oct 20251078 AMAQI
11th Oct 20251029 AMAQI
12 PM
6 PM
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 6 PM

70AQI

13 hours / Day
390 hours / Month
Avg. Lowest Time
4 PM - 6 PM

67AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 6 PM (Avg. 70), while the lowest AQI was between 4 PM to 6 PM (Avg. 67).
Night time
Avg. Highest Time
8 PM - 11 PM

76AQI

4 hours / Day
120 hours / Month
Avg. Lowest Time
12 AM - 7 PM

73AQI

7 hours / Day
210 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 76), while the lowest AQI was between 12 AM to 7 PM (Avg. 73).

2025 Days Vs Air Quality

Lake District, Hefei, Anhui, China

2025

6%

16

60%

170

30%

85

4%

11

0.3%

1

Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)

Good
16 Days
Moderate
170 Days
Poor
85 Days
Unhealthy
11 Days
Severe
0 Days
Hazardous
1 Days

Under WHO’s Safe Air Quality Limits: 6%

Health Risk Level:

Extreme

In 2025, 6% of 284 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

Lake District, Hefei, Anhui, 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.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
139AQI
2nd January 2025
177AQI
3rd January 2025
174AQI
4th January 2025
171AQI
5th January 2025
125AQI
6th January 2025
133AQI
7th January 2025
99AQI
8th January 2025
116AQI
9th January 2025
77AQI
10th January 2025
98AQI
11th January 2025
99AQI
12th January 2025
113AQI
13th January 2025
135AQI
14th January 2025
148AQI
15th January 2025
89AQI
16th January 2025
110AQI
17th January 2025
108AQI
18th January 2025
134AQI
19th January 2025
148AQI
20th January 2025
165AQI
21st January 2025
161AQI
22nd January 2025
177AQI
23rd January 2025
166AQI
24th January 2025
127AQI
25th January 2025
90AQI
26th January 2025
114AQI
27th January 2025
61AQI
28th January 2025
92AQI
29th January 2025
136AQI
30th January 2025
113AQI
31st January 2025
155AQI
1st February 2025
105AQI
2nd February 2025
120AQI
3rd February 2025
148AQI
4th February 2025
102AQI
5th February 2025
107AQI
6th February 2025
80AQI
7th February 2025
91AQI
8th February 2025
60AQI
9th February 2025
74AQI
10th February 2025
81AQI
11th February 2025
106AQI
12th February 2025
140AQI
13th February 2025
94AQI
14th February 2025
149AQI
15th February 2025
99AQI
16th February 2025
123AQI
17th February 2025
105AQI
18th February 2025
99AQI
19th February 2025
116AQI
20th February 2025
122AQI
21st February 2025
110AQI
22nd February 2025
131AQI
23rd February 2025
145AQI
24th February 2025
126AQI
25th February 2025
151AQI
26th February 2025
155AQI
27th February 2025
134AQI
28th February 2025
124AQI
1st March 2025
104AQI
2nd March 2025
89AQI
3rd March 2025
70AQI
4th March 2025
116AQI
5th March 2025
123AQI
6th March 2025
117AQI
7th March 2025
121AQI
8th March 2025
137AQI
9th March 2025
146AQI
10th March 2025
146AQI
11th March 2025
127AQI
12th March 2025
166AQI
13th March 2025
122AQI
14th March 2025
102AQI
15th March 2025
93AQI
16th March 2025
90AQI
17th March 2025
75AQI
18th March 2025
81AQI
19th March 2025
80AQI
20th March 2025
80AQI
21st March 2025
78AQI
22nd March 2025
85AQI
23rd March 2025
92AQI
24th March 2025
109AQI
25th March 2025
97AQI
26th March 2025
125AQI
27th March 2025
118AQI
28th March 2025
102AQI
29th March 2025
125AQI
30th March 2025
118AQI
31st March 2025
94AQI
1st April 2025
96AQI
2nd April 2025
106AQI
3rd April 2025
86AQI
4th April 2025
118AQI
5th April 2025
110AQI
6th April 2025
106AQI
7th April 2025
104AQI
8th April 2025
107AQI
9th April 2025
115AQI
10th April 2025
113AQI
11th April 2025
102AQI
12th April 2025
357AQI
13th April 2025
102AQI
14th April 2025
110AQI
15th April 2025
80AQI
16th April 2025
87AQI
17th April 2025
99AQI
18th April 2025
103AQI
19th April 2025
120AQI
20th April 2025
101AQI
21st April 2025
101AQI
22nd April 2025
121AQI
23rd April 2025
104AQI
24th April 2025
107AQI
25th April 2025
82AQI
26th April 2025
81AQI
27th April 2025
77AQI
28th April 2025
116AQI
29th April 2025
91AQI
30th April 2025
87AQI
1st May 2025
82AQI
2nd May 2025
82AQI
3rd May 2025
86AQI
4th May 2025
76AQI
5th May 2025
87AQI
6th May 2025
120AQI
7th May 2025
124AQI
8th May 2025
91AQI
9th May 2025
80AQI
10th May 2025
62AQI
11th May 2025
76AQI
12th May 2025
81AQI
13th May 2025
83AQI
14th May 2025
89AQI
15th May 2025
114AQI
16th May 2025
84AQI
17th May 2025
119AQI
18th May 2025
94AQI
19th May 2025
113AQI
20th May 2025
89AQI
21st May 2025
75AQI
22nd May 2025
85AQI
23rd May 2025
110AQI
24th May 2025
117AQI
25th May 2025
112AQI
26th May 2025
119AQI
27th May 2025
121AQI
28th May 2025
119AQI
29th May 2025
98AQI
30th May 2025
89AQI
31st May 2025
89AQI
1st June 2025
63AQI
2nd June 2025
60AQI
3rd June 2025
74AQI
4th June 2025
88AQI
5th June 2025
81AQI
6th June 2025
76AQI
7th June 2025
56AQI
8th June 2025
58AQI
9th June 2025
66AQI
10th June 2025
67AQI
11th June 2025
83AQI
12th June 2025
83AQI
13th June 2025
84AQI
14th June 2025
68AQI
15th June 2025
50AQI
16th June 2025
60AQI
17th June 2025
61AQI
18th June 2025
50AQI
19th June 2025
45AQI
20th June 2025
50AQI
21st June 2025
41AQI
22nd June 2025
34AQI
23rd June 2025
54AQI
24th June 2025
62AQI
25th June 2025
62AQI
26th June 2025
63AQI
27th June 2025
52AQI
28th June 2025
48AQI
29th June 2025
47AQI
30th June 2025
55AQI
1st July 2025
52AQI
2nd July 2025
56AQI
3rd July 2025
61AQI
4th July 2025
62AQI
5th July 2025
65AQI
6th July 2025
69AQI
7th July 2025
70AQI
8th July 2025
55AQI
9th July 2025
56AQI
10th July 2025
73AQI
11th July 2025
71AQI
12th July 2025
66AQI
13th July 2025
66AQI
14th July 2025
69AQI
15th July 2025
69AQI
16th July 2025
71AQI
17th July 2025
64AQI
18th July 2025
68AQI
19th July 2025
68AQI
20th July 2025
54AQI
21st July 2025
50AQI
22nd July 2025
45AQI
23rd July 2025
53AQI
24th July 2025
52AQI
25th July 2025
58AQI
26th July 2025
52AQI
27th July 2025
53AQI
28th July 2025
51AQI
29th July 2025
57AQI
30th July 2025
49AQI
31st July 2025
56AQI
1st August 2025
53AQI
2nd August 2025
53AQI
3rd August 2025
57AQI
4th August 2025
59AQI
5th August 2025
65AQI
6th August 2025
57AQI
7th August 2025
55AQI
8th August 2025
56AQI
9th August 2025
60AQI
10th August 2025
47AQI
11th August 2025
44AQI
12th August 2025
55AQI
13th August 2025
58AQI
14th August 2025
52AQI
15th August 2025
48AQI
16th August 2025
51AQI
17th August 2025
55AQI
18th August 2025
56AQI
19th August 2025
57AQI
20th August 2025
55AQI
21st August 2025
56AQI
22nd August 2025
54AQI
23rd August 2025
51AQI
24th August 2025
55AQI
25th August 2025
57AQI
26th August 2025
53AQI
27th August 2025
60AQI
28th August 2025
61AQI
29th August 2025
61AQI
30th August 2025
57AQI
31st August 2025
53AQI
1st September 2025
58AQI
2nd September 2025
59AQI
3rd September 2025
61AQI
4th September 2025
70AQI
5th September 2025
72AQI
6th September 2025
71AQI
7th September 2025
75AQI
8th September 2025
71AQI
9th September 2025
60AQI
10th September 2025
60AQI
11th September 2025
60AQI
12th September 2025
58AQI
13th September 2025
56AQI
14th September 2025
57AQI
15th September 2025
58AQI
16th September 2025
67AQI
17th September 2025
58AQI
18th September 2025
54AQI
19th September 2025
60AQI
20th September 2025
56AQI
21st September 2025
67AQI
22nd September 2025
61AQI
23rd September 2025
77AQI
24th September 2025
52AQI
25th September 2025
45AQI
26th September 2025
63AQI
27th September 2025
62AQI
28th September 2025
63AQI
29th September 2025
77AQI
30th September 2025
50AQI
1st October 2025
71AQI
2nd October 2025
81AQI
3rd October 2025
54AQI
4th October 2025
72AQI
5th October 2025
127AQI
6th October 2025
132AQI
7th October 2025
114AQI
8th October 2025
101AQI
9th October 2025
97AQI
10th October 2025
102AQI
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

127AQI

114AQI

107AQI

110AQI

96AQI

61AQI

60AQI

55AQI

62AQI

95AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202588AQI

8
15
8
8
18
2
13
17
1
10
19
1
20
11
8
22
3
28
3
28
2
28
5
5
16
170
85
11
1

Highest AQI recorded in

January

127AQI

Lowest AQI recorded in

August

55AQI

202489AQI

2
6
11
11
1
3
10
11
4
1
12
15
4
18
12
23
8
9
20
1
25
6
5
26
9
21
8
15
7
1
3
17
9
1
2
26
3
64
176
100
24
2

Highest AQI recorded in

January

134AQI

Lowest AQI recorded in

July

43AQI

202391AQI

8
16
7
1
11
14
2
1
13
15
2
1
16
11
1
1
3
20
7
1
10
19
1
17
14
1
30
6
20
4
5
15
9
2
1
12
12
1
2
9
13
4
3
48
187
102
20
4

Highest AQI recorded in

January

124AQI

Lowest AQI recorded in

July

50AQI

202292AQI

1
5
10
15
7
11
3
5
13
12
1
27
2
1
1
22
8
9
20
1
7
14
1
6
21
2
5
23
3
1
15
12
2
1
8
13
8
1
36
176
74
30
1

Highest AQI recorded in

January

137AQI

Lowest AQI recorded in

August

53AQI

202190AQI

6
13
11
1
1
13
11
3
14
16
1
1
19
9
1
3
20
8
3
26
1
17
14
7
19
3
5
25
6
15
10
1
15
11
3
9
14
8
44
195
96
27
1

Highest AQI recorded in

January

134AQI

Lowest AQI recorded in

July

48AQI

202086AQI

2
9
2
15
6
14
4
12
17
1
8
20
2
1
18
13
27
3
1
18
11
1
14
15
1
5
9
17
41
152
53
20

Highest AQI recorded in

December

144AQI

Lowest AQI recorded in

August

51AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2022(Avg.)
92AQI
Least Polluted Year Recorded
2020(Avg.)
86AQI

Lake District's annual 2025 AQI (88) shows an average percentage change of -1.2% (improved AQI) compared to previous years: 2020 (86), 2021 (90), 2022 (92), 2023 (91), 2024 (89).