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HistoryAQIPM2.5PM10COSO2NO2O3

High Tech Zone, 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

High Tech Zone, Hefei, Anhui, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
28th Oct 2024
184AQI
Lowest AQI recorded on
5th Oct 2022
27AQI

Same Day Analysis (10th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 107 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

High Tech Zone, Hefei, Anhui, China

AQI
Day
Night
.

6 AM10th Oct 2025

6 PM

5 AM11th Oct 2025

Day time
Avg. Highest Time
4PM10th Oct

143AQI

Avg. Lowest Time
6AM10th Oct

79AQI

Night time
Avg. Highest Time
3AM11th Oct

168AQI

Avg. Lowest Time
7PM10th Oct

143AQI

In the last 24 hours,

High Tech Zone's AQI reached its highest point of 168 at 3 AM during the Night, while the lowest point, 79, was recorded at 6 AM during the Day between 10th Oct and 11th Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025

High Tech Zone, 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 2025596 AMAQI
11th Sep 2025607 AMAQI
11th Sep 2025568 AMAQI
11th Sep 2025569 AMAQI
11th Sep 20255810 AMAQI
11th Sep 20256411 AMAQI
11th Sep 20255912 PMAQI
11th Sep 2025501 PMAQI
11th Sep 2025542 PMAQI
11th Sep 2025593 PMAQI
11th Sep 2025564 PMAQI
11th Sep 2025615 PMAQI
11th Sep 2025556 PMAQI
11th Sep 2025587 PMAQI
11th Sep 2025598 PMAQI
11th Sep 2025609 PMAQI
11th Sep 20255910 PMAQI
11th Sep 20255811 PMAQI
12th Sep 20255812 AMAQI
12th Sep 2025611 AMAQI
12th Sep 2025592 AMAQI
12th Sep 2025603 AMAQI
12th Sep 2025584 AMAQI
12th Sep 2025585 AMAQI

25°C23/29°C

12th Sep 2025596 AMAQI
12th Sep 2025587 AMAQI
12th Sep 2025588 AMAQI
12th Sep 2025529 AMAQI
12th Sep 20256810 AMAQI
12th Sep 20255911 AMAQI
12th Sep 20255312 PMAQI
12th Sep 2025471 PMAQI
12th Sep 2025452 PMAQI
12th Sep 2025363 PMAQI
12th Sep 2025284 PMAQI
12th Sep 2025365 PMAQI
12th Sep 2025466 PMAQI
12th Sep 2025507 PMAQI
12th Sep 2025558 PMAQI
12th Sep 2025529 PMAQI
12th Sep 20255310 PMAQI
12th Sep 20255411 PMAQI
13th Sep 20255712 AMAQI
13th Sep 2025581 AMAQI
13th Sep 2025592 AMAQI
13th Sep 2025583 AMAQI
13th Sep 2025584 AMAQI
13th Sep 2025585 AMAQI

25°C22/27°C

13th Sep 2025586 AMAQI
13th Sep 2025587 AMAQI
13th Sep 2025558 AMAQI
13th Sep 2025569 AMAQI
13th Sep 20255210 AMAQI
13th Sep 20255711 AMAQI
13th Sep 20255012 PMAQI
13th Sep 2025381 PMAQI
13th Sep 2025432 PMAQI
13th Sep 2025483 PMAQI
13th Sep 2025304 PMAQI
13th Sep 2025355 PMAQI
13th Sep 2025426 PMAQI
13th Sep 2025507 PMAQI
13th Sep 2025528 PMAQI
13th Sep 2025549 PMAQI
13th Sep 20255410 PMAQI
13th Sep 20255511 PMAQI
14th Sep 20255412 AMAQI
14th Sep 2025581 AMAQI
14th Sep 2025582 AMAQI
14th Sep 2025583 AMAQI
14th Sep 2025574 AMAQI
14th Sep 2025575 AMAQI

24°C21/28°C

14th Sep 2025576 AMAQI
14th Sep 2025577 AMAQI
14th Sep 2025658 AMAQI
14th Sep 2025719 AMAQI
14th Sep 20256610 AMAQI
14th Sep 20256011 AMAQI
14th Sep 20255812 PMAQI
14th Sep 2025541 PMAQI
14th Sep 2025542 PMAQI
14th Sep 2025543 PMAQI
14th Sep 2025514 PMAQI
14th Sep 2025325 PMAQI
14th Sep 2025426 PMAQI
14th Sep 2025417 PMAQI
14th Sep 2025488 PMAQI
14th Sep 2025549 PMAQI
14th Sep 20255210 PMAQI
14th Sep 20255611 PMAQI
15th Sep 20255312 AMAQI
15th Sep 2025561 AMAQI
15th Sep 2025572 AMAQI
15th Sep 2025563 AMAQI
15th Sep 2025564 AMAQI
15th Sep 2025565 AMAQI

25°C23/28°C

15th Sep 2025576 AMAQI
15th Sep 2025567 AMAQI
15th Sep 2025388 AMAQI
15th Sep 2025429 AMAQI
15th Sep 20255810 AMAQI
15th Sep 20254211 AMAQI
15th Sep 20255312 PMAQI
15th Sep 2025531 PMAQI
15th Sep 2025512 PMAQI
15th Sep 2025543 PMAQI
15th Sep 2025464 PMAQI
15th Sep 2025495 PMAQI
15th Sep 2025526 PMAQI
15th Sep 2025607 PMAQI
15th Sep 2025608 PMAQI
15th Sep 2025629 PMAQI
15th Sep 20255810 PMAQI
15th Sep 20256211 PMAQI
16th Sep 20255812 AMAQI
16th Sep 2025571 AMAQI
16th Sep 2025562 AMAQI
16th Sep 2025563 AMAQI
16th Sep 2025564 AMAQI
16th Sep 2025565 AMAQI

28°C24/33°C

16th Sep 2025566 AMAQI
16th Sep 2025557 AMAQI
16th Sep 2025698 AMAQI
16th Sep 2025739 AMAQI
16th Sep 20257010 AMAQI
16th Sep 20256511 AMAQI
16th Sep 20256412 PMAQI
16th Sep 2025611 PMAQI
16th Sep 2025532 PMAQI
16th Sep 2025513 PMAQI
16th Sep 2025534 PMAQI
16th Sep 2025545 PMAQI
16th Sep 2025646 PMAQI
16th Sep 2025667 PMAQI
16th Sep 2025668 PMAQI
16th Sep 2025709 PMAQI
16th Sep 20257010 PMAQI
16th Sep 20257011 PMAQI
17th Sep 20256612 AMAQI
17th Sep 2025561 AMAQI
17th Sep 2025562 AMAQI
17th Sep 2025563 AMAQI
17th Sep 2025584 AMAQI
17th Sep 2025585 AMAQI

30°C25/35°C

17th Sep 2025586 AMAQI
17th Sep 2025587 AMAQI
17th Sep 2025418 AMAQI
17th Sep 2025349 AMAQI
17th Sep 20253410 AMAQI
17th Sep 20252911 AMAQI
17th Sep 20253512 PMAQI
17th Sep 2025461 PMAQI
17th Sep 2025542 PMAQI
17th Sep 2025563 PMAQI
17th Sep 2025584 PMAQI
17th Sep 2025575 PMAQI
17th Sep 2025636 PMAQI
17th Sep 2025567 PMAQI
17th Sep 2025568 PMAQI
17th Sep 2025589 PMAQI
17th Sep 20255610 PMAQI
17th Sep 20255611 PMAQI
18th Sep 20255412 AMAQI
18th Sep 2025591 AMAQI
18th Sep 2025582 AMAQI
18th Sep 2025583 AMAQI
18th Sep 2025564 AMAQI
18th Sep 2025565 AMAQI

25°C21/29°C

18th Sep 2025566 AMAQI
18th Sep 2025567 AMAQI
18th Sep 2025538 AMAQI
18th Sep 2025409 AMAQI
18th Sep 20253810 AMAQI
18th Sep 20254311 AMAQI
18th Sep 20254012 PMAQI
18th Sep 2025261 PMAQI
18th Sep 2025272 PMAQI
18th Sep 2025363 PMAQI
18th Sep 2025384 PMAQI
18th Sep 2025515 PMAQI
18th Sep 2025516 PMAQI
18th Sep 2025567 PMAQI
18th Sep 2025558 PMAQI
18th Sep 2025549 PMAQI
18th Sep 20255210 PMAQI
18th Sep 20255611 PMAQI
19th Sep 20255212 AMAQI
19th Sep 2025571 AMAQI
19th Sep 2025572 AMAQI
19th Sep 2025563 AMAQI
19th Sep 2025544 AMAQI
19th Sep 2025545 AMAQI

22°C20/24°C

19th Sep 2025546 AMAQI
19th Sep 2025547 AMAQI
19th Sep 2025518 AMAQI
19th Sep 2025559 AMAQI
19th Sep 20254610 AMAQI
19th Sep 20255411 AMAQI
19th Sep 20256412 PMAQI
19th Sep 2025761 PMAQI
19th Sep 2025722 PMAQI
19th Sep 2025703 PMAQI
19th Sep 2025704 PMAQI
19th Sep 2025725 PMAQI
19th Sep 2025506 PMAQI
19th Sep 2025487 PMAQI
19th Sep 2025528 PMAQI
19th Sep 2025489 PMAQI
19th Sep 20255210 PMAQI
19th Sep 20255311 PMAQI
20th Sep 20255212 AMAQI
20th Sep 2025551 AMAQI
20th Sep 2025552 AMAQI
20th Sep 2025553 AMAQI
20th Sep 2025564 AMAQI
20th Sep 2025565 AMAQI

21°C17/25°C

20th Sep 2025566 AMAQI
20th Sep 2025577 AMAQI
20th Sep 2025408 AMAQI
20th Sep 2025529 AMAQI
20th Sep 20255410 AMAQI
20th Sep 20255411 AMAQI
20th Sep 20255312 PMAQI
20th Sep 2025511 PMAQI
20th Sep 2025562 PMAQI
20th Sep 2025523 PMAQI
20th Sep 2025564 PMAQI
20th Sep 2025625 PMAQI
20th Sep 2025566 PMAQI
20th Sep 2025587 PMAQI
20th Sep 2025588 PMAQI
20th Sep 2025589 PMAQI
20th Sep 20255710 PMAQI
20th Sep 20255611 PMAQI
21st Sep 20256112 AMAQI
21st Sep 2025561 AMAQI
21st Sep 2025552 AMAQI
21st Sep 2025553 AMAQI
21st Sep 2025554 AMAQI
21st Sep 2025545 AMAQI

20°C17/24°C

21st Sep 2025546 AMAQI
21st Sep 2025547 AMAQI
21st Sep 2025698 AMAQI
21st Sep 2025689 AMAQI
21st Sep 20257210 AMAQI
21st Sep 20257011 AMAQI
21st Sep 20256812 PMAQI
21st Sep 2025741 PMAQI
21st Sep 2025662 PMAQI
21st Sep 2025643 PMAQI
21st Sep 2025714 PMAQI
21st Sep 2025685 PMAQI
21st Sep 2025686 PMAQI
21st Sep 2025677 PMAQI
21st Sep 2025658 PMAQI
21st Sep 2025689 PMAQI
21st Sep 20256610 PMAQI
21st Sep 20256611 PMAQI
22nd Sep 20256612 AMAQI
22nd Sep 2025561 AMAQI
22nd Sep 2025562 AMAQI
22nd Sep 2025573 AMAQI
22nd Sep 2025584 AMAQI
22nd Sep 2025585 AMAQI

20°C19/22°C

22nd Sep 2025586 AMAQI
22nd Sep 2025587 AMAQI
22nd Sep 2025588 AMAQI
22nd Sep 2025599 AMAQI
22nd Sep 20255410 AMAQI
22nd Sep 20255611 AMAQI
22nd Sep 20254812 PMAQI
22nd Sep 2025601 PMAQI
22nd Sep 2025602 PMAQI
22nd Sep 2025623 PMAQI
22nd Sep 2025594 PMAQI
22nd Sep 2025595 PMAQI
22nd Sep 2025606 PMAQI
22nd Sep 2025627 PMAQI
22nd Sep 2025588 PMAQI
22nd Sep 2025609 PMAQI
22nd Sep 20256010 PMAQI
22nd Sep 20256011 PMAQI
23rd Sep 20256712 AMAQI
23rd Sep 2025641 AMAQI
23rd Sep 2025582 AMAQI
23rd Sep 2025593 AMAQI
23rd Sep 2025584 AMAQI
23rd Sep 2025585 AMAQI

24°C20/28°C

23rd Sep 2025586 AMAQI
23rd Sep 2025587 AMAQI
23rd Sep 2025678 AMAQI
23rd Sep 2025739 AMAQI
23rd Sep 20258010 AMAQI
23rd Sep 20258211 AMAQI
23rd Sep 20258012 PMAQI
23rd Sep 2025841 PMAQI
23rd Sep 2025832 PMAQI
23rd Sep 2025793 PMAQI
23rd Sep 2025854 PMAQI
23rd Sep 2025885 PMAQI
23rd Sep 20251036 PMAQI
23rd Sep 2025967 PMAQI
23rd Sep 2025868 PMAQI
23rd Sep 2025809 PMAQI
23rd Sep 20257310 PMAQI
23rd Sep 20256011 PMAQI
24th Sep 20255512 AMAQI
24th Sep 2025601 AMAQI
24th Sep 2025592 AMAQI
24th Sep 2025613 AMAQI
24th Sep 2025634 AMAQI
24th Sep 2025635 AMAQI

24°C20/30°C

24th Sep 2025626 AMAQI
24th Sep 2025627 AMAQI
24th Sep 2025308 AMAQI
24th Sep 2025189 AMAQI
24th Sep 20251810 AMAQI
24th Sep 20252011 AMAQI
24th Sep 20252312 PMAQI
24th Sep 2025241 PMAQI
24th Sep 2025252 PMAQI
24th Sep 2025263 PMAQI
24th Sep 2025344 PMAQI
24th Sep 2025375 PMAQI
24th Sep 2025486 PMAQI
24th Sep 2025477 PMAQI
24th Sep 2025548 PMAQI
24th Sep 2025579 PMAQI
24th Sep 20255810 PMAQI
24th Sep 20255811 PMAQI
25th Sep 20255812 AMAQI
25th Sep 2025581 AMAQI
25th Sep 2025602 AMAQI
25th Sep 2025573 AMAQI
25th Sep 2025564 AMAQI
25th Sep 2025555 AMAQI

20°C19/20°C

25th Sep 2025556 AMAQI
25th Sep 2025557 AMAQI
25th Sep 2025388 AMAQI
25th Sep 2025389 AMAQI
25th Sep 20253210 AMAQI
25th Sep 20253411 AMAQI
25th Sep 20254312 PMAQI
25th Sep 2025461 PMAQI
25th Sep 2025222 PMAQI
25th Sep 2025233 PMAQI
25th Sep 2025254 PMAQI
25th Sep 2025255 PMAQI
25th Sep 2025236 PMAQI
25th Sep 2025257 PMAQI
25th Sep 2025288 PMAQI
25th Sep 2025429 PMAQI
25th Sep 20254710 PMAQI
25th Sep 20254411 PMAQI
26th Sep 20252612 AMAQI
26th Sep 2025171 AMAQI
26th Sep 2025262 AMAQI
26th Sep 2025403 AMAQI
26th Sep 2025434 AMAQI
26th Sep 2025445 AMAQI

21°C20/23°C

26th Sep 2025466 AMAQI
26th Sep 2025537 AMAQI
26th Sep 2025568 AMAQI
26th Sep 2025609 AMAQI
26th Sep 20256410 AMAQI
26th Sep 20256611 AMAQI
26th Sep 20256312 PMAQI
26th Sep 2025611 PMAQI
26th Sep 2025602 PMAQI
26th Sep 2025483 PMAQI
26th Sep 2025484 PMAQI
26th Sep 2025355 PMAQI
26th Sep 2025356 PMAQI
26th Sep 2025447 PMAQI
26th Sep 2025498 PMAQI
26th Sep 2025599 PMAQI
26th Sep 20255510 PMAQI
26th Sep 20255311 PMAQI
27th Sep 20255212 AMAQI
27th Sep 2025471 AMAQI
27th Sep 2025372 AMAQI
27th Sep 2025383 AMAQI
27th Sep 2025474 AMAQI
27th Sep 2025445 AMAQI

23°C22/25°C

27th Sep 2025526 AMAQI
27th Sep 2025427 AMAQI
27th Sep 2025428 AMAQI
27th Sep 2025509 AMAQI
27th Sep 20255510 AMAQI
27th Sep 20256711 AMAQI
27th Sep 20256712 PMAQI
27th Sep 2025691 PMAQI
27th Sep 2025682 PMAQI
27th Sep 2025603 PMAQI
27th Sep 2025614 PMAQI
27th Sep 2025595 PMAQI
27th Sep 2025546 PMAQI
27th Sep 2025577 PMAQI
27th Sep 2025568 PMAQI
27th Sep 2025569 PMAQI
27th Sep 20255610 PMAQI
27th Sep 20255711 PMAQI
28th Sep 20255612 AMAQI
28th Sep 2025571 AMAQI
28th Sep 2025572 AMAQI
28th Sep 2025553 AMAQI
28th Sep 2025534 AMAQI
28th Sep 2025545 AMAQI

25°C23/30°C

28th Sep 2025546 AMAQI
28th Sep 2025507 AMAQI
28th Sep 2025488 AMAQI
28th Sep 2025569 AMAQI
28th Sep 20255510 AMAQI
28th Sep 20255611 AMAQI
28th Sep 20255912 PMAQI
28th Sep 2025571 PMAQI
28th Sep 2025542 PMAQI
28th Sep 2025513 PMAQI
28th Sep 2025494 PMAQI
28th Sep 2025435 PMAQI
28th Sep 2025506 PMAQI
28th Sep 2025487 PMAQI
28th Sep 2025568 PMAQI
28th Sep 2025519 PMAQI
28th Sep 20255410 PMAQI
28th Sep 20255711 PMAQI
29th Sep 20256112 AMAQI
29th Sep 2025661 AMAQI
29th Sep 2025722 AMAQI
29th Sep 2025783 AMAQI
29th Sep 2025824 AMAQI
29th Sep 2025805 AMAQI

25°C23/29°C

29th Sep 2025866 AMAQI
29th Sep 2025967 AMAQI
29th Sep 20251018 AMAQI
29th Sep 2025889 AMAQI
29th Sep 20258010 AMAQI
29th Sep 20258011 AMAQI
29th Sep 20257212 PMAQI
29th Sep 2025691 PMAQI
29th Sep 2025632 PMAQI
29th Sep 2025703 PMAQI
29th Sep 2025754 PMAQI
29th Sep 2025805 PMAQI
29th Sep 2025826 PMAQI
29th Sep 2025877 PMAQI
29th Sep 2025878 PMAQI
29th Sep 2025859 PMAQI
29th Sep 20258610 PMAQI
29th Sep 20258211 PMAQI
30th Sep 20259212 AMAQI
30th Sep 2025821 AMAQI
30th Sep 2025902 AMAQI
30th Sep 2025933 AMAQI
30th Sep 2025804 AMAQI
30th Sep 2025735 AMAQI

21°C20/22°C

30th Sep 2025786 AMAQI
30th Sep 2025667 AMAQI
30th Sep 2025588 AMAQI
30th Sep 2025609 AMAQI
30th Sep 20255410 AMAQI
30th Sep 20254311 AMAQI
30th Sep 20254112 PMAQI
30th Sep 2025381 PMAQI
30th Sep 2025342 PMAQI
30th Sep 2025253 PMAQI
30th Sep 2025244 PMAQI
30th Sep 2025235 PMAQI
30th Sep 2025326 PMAQI
30th Sep 2025267 PMAQI
30th Sep 2025328 PMAQI
30th Sep 2025369 PMAQI
30th Sep 20255010 PMAQI
30th Sep 20255111 PMAQI
1st Oct 20255412 AMAQI
1st Oct 2025461 AMAQI
1st Oct 2025462 AMAQI
1st Oct 2025563 AMAQI
1st Oct 2025614 AMAQI
1st Oct 2025565 AMAQI

22°C20/25°C

1st Oct 2025556 AMAQI
1st Oct 2025607 AMAQI
1st Oct 2025618 AMAQI
1st Oct 2025659 AMAQI
1st Oct 20257310 AMAQI
1st Oct 20257211 AMAQI
1st Oct 20257912 PMAQI
1st Oct 2025771 PMAQI
1st Oct 2025782 PMAQI
1st Oct 2025803 PMAQI
1st Oct 2025764 PMAQI
1st Oct 2025705 PMAQI
1st Oct 2025686 PMAQI
1st Oct 2025667 PMAQI
1st Oct 2025678 PMAQI
1st Oct 2025669 PMAQI
1st Oct 20257810 PMAQI
1st Oct 20258411 PMAQI
2nd Oct 20258012 AMAQI
2nd Oct 2025821 AMAQI
2nd Oct 2025882 AMAQI
2nd Oct 2025893 AMAQI
2nd Oct 2025904 AMAQI
2nd Oct 2025855 AMAQI

23°C21/26°C

2nd Oct 2025866 AMAQI
2nd Oct 2025877 AMAQI
2nd Oct 2025928 AMAQI
2nd Oct 2025869 AMAQI
2nd Oct 20259310 AMAQI
2nd Oct 20259011 AMAQI
2nd Oct 20259112 PMAQI
2nd Oct 2025871 PMAQI
2nd Oct 2025802 PMAQI
2nd Oct 2025833 PMAQI
2nd Oct 2025734 PMAQI
2nd Oct 2025725 PMAQI
2nd Oct 2025686 PMAQI
2nd Oct 2025587 PMAQI
2nd Oct 2025518 PMAQI
2nd Oct 2025509 PMAQI
2nd Oct 20255010 PMAQI
2nd Oct 20255311 PMAQI
3rd Oct 20254812 AMAQI
3rd Oct 2025511 AMAQI
3rd Oct 2025532 AMAQI
3rd Oct 2025533 AMAQI
3rd Oct 2025574 AMAQI
3rd Oct 2025555 AMAQI

23°C19/27°C

3rd Oct 2025596 AMAQI
3rd Oct 2025547 AMAQI
3rd Oct 2025568 AMAQI
3rd Oct 2025519 AMAQI
3rd Oct 20255310 AMAQI
3rd Oct 20255111 AMAQI
3rd Oct 20255712 PMAQI
3rd Oct 2025571 PMAQI
3rd Oct 2025572 PMAQI
3rd Oct 2025553 PMAQI
3rd Oct 2025544 PMAQI
3rd Oct 2025545 PMAQI
3rd Oct 2025396 PMAQI
3rd Oct 2025327 PMAQI
3rd Oct 2025388 PMAQI
3rd Oct 2025439 PMAQI
3rd Oct 20253710 PMAQI
3rd Oct 20253811 PMAQI
4th Oct 20254712 AMAQI
4th Oct 2025491 AMAQI
4th Oct 2025552 AMAQI
4th Oct 2025603 AMAQI
4th Oct 2025644 AMAQI
4th Oct 2025675 AMAQI

21°C18/23°C

4th Oct 2025636 AMAQI
4th Oct 2025617 AMAQI
4th Oct 2025578 AMAQI
4th Oct 2025539 AMAQI
4th Oct 20255810 AMAQI
4th Oct 20255211 AMAQI
4th Oct 20256512 PMAQI
4th Oct 2025721 PMAQI
4th Oct 2025712 PMAQI
4th Oct 2025693 PMAQI
4th Oct 2025724 PMAQI
4th Oct 2025735 PMAQI
4th Oct 2025756 PMAQI
4th Oct 2025717 PMAQI
4th Oct 2025768 PMAQI
4th Oct 2025939 PMAQI
4th Oct 20259910 PMAQI
4th Oct 202510011 PMAQI
5th Oct 20259812 AMAQI
5th Oct 20251001 AMAQI
5th Oct 20251072 AMAQI
5th Oct 20251033 AMAQI
5th Oct 20251234 AMAQI
5th Oct 20251145 AMAQI

23°C20/27°C

5th Oct 20251136 AMAQI
5th Oct 20251157 AMAQI
5th Oct 20251098 AMAQI
5th Oct 20251349 AMAQI
5th Oct 202513410 AMAQI
5th Oct 202514511 AMAQI
5th Oct 202513812 PMAQI
5th Oct 20251381 PMAQI
5th Oct 20251402 PMAQI
5th Oct 20251203 PMAQI
5th Oct 20251144 PMAQI
5th Oct 20251045 PMAQI
5th Oct 2025846 PMAQI
5th Oct 2025917 PMAQI
5th Oct 2025948 PMAQI
5th Oct 20251029 PMAQI
5th Oct 202511910 PMAQI
5th Oct 202514111 PMAQI
6th Oct 202513012 AMAQI
6th Oct 20251221 AMAQI
6th Oct 20251182 AMAQI
6th Oct 20251193 AMAQI
6th Oct 20251194 AMAQI
6th Oct 20251425 AMAQI

27°C23/31°C

6th Oct 20251546 AMAQI
6th Oct 20251457 AMAQI
6th Oct 20251548 AMAQI
6th Oct 20251529 AMAQI
6th Oct 202514610 AMAQI
6th Oct 202513711 AMAQI
6th Oct 202512412 PMAQI
6th Oct 20251251 PMAQI
6th Oct 20251072 PMAQI
6th Oct 2025833 PMAQI
6th Oct 2025804 PMAQI
6th Oct 20251045 PMAQI
6th Oct 20251236 PMAQI
6th Oct 20251367 PMAQI
6th Oct 20251428 PMAQI
6th Oct 20251409 PMAQI
6th Oct 202512710 PMAQI
6th Oct 202514311 PMAQI
7th Oct 202512912 AMAQI
7th Oct 20251471 AMAQI

28°C25/32°C

7th Oct 2025927 PMAQI
7th Oct 20251468 PMAQI
7th Oct 20251559 PMAQI
7th Oct 202514410 PMAQI
7th Oct 202514711 PMAQI
8th Oct 202510812 AMAQI
8th Oct 2025971 AMAQI
8th Oct 2025912 AMAQI
8th Oct 2025823 AMAQI
8th Oct 2025854 AMAQI
8th Oct 2025785 AMAQI

26°C23/29°C

8th Oct 2025896 AMAQI
8th Oct 20251037 AMAQI
8th Oct 20251038 AMAQI
8th Oct 2025989 AMAQI
8th Oct 202511110 AMAQI
8th Oct 202510611 AMAQI
8th Oct 202511512 PMAQI
8th Oct 20251401 PMAQI
8th Oct 20251242 PMAQI
8th Oct 20251093 PMAQI
8th Oct 20251044 PMAQI
8th Oct 20251045 PMAQI
8th Oct 2025986 PMAQI
8th Oct 2025947 PMAQI
8th Oct 2025988 PMAQI
8th Oct 20251139 PMAQI
8th Oct 202510410 PMAQI
8th Oct 202510811 PMAQI
9th Oct 202511012 AMAQI
9th Oct 20251061 AMAQI
9th Oct 20251082 AMAQI
9th Oct 20251133 AMAQI
9th Oct 20251064 AMAQI
9th Oct 20251085 AMAQI

27°C24/31°C

9th Oct 2025986 AMAQI
9th Oct 20251037 AMAQI
9th Oct 2025988 AMAQI
9th Oct 20251069 AMAQI
9th Oct 20259210 AMAQI
9th Oct 202510111 AMAQI
9th Oct 202510112 PMAQI
9th Oct 2025851 PMAQI
9th Oct 2025652 PMAQI
9th Oct 2025823 PMAQI
9th Oct 2025864 PMAQI
9th Oct 2025765 PMAQI
9th Oct 2025866 PMAQI
9th Oct 2025837 PMAQI
9th Oct 2025838 PMAQI
9th Oct 2025899 PMAQI
9th Oct 20259810 PMAQI
9th Oct 20258211 PMAQI
10th Oct 20259112 AMAQI
10th Oct 2025701 AMAQI
10th Oct 2025722 AMAQI
10th Oct 2025833 AMAQI
10th Oct 20251054 AMAQI
10th Oct 2025845 AMAQI

27°C22/32°C

10th Oct 2025796 AMAQI
10th Oct 2025907 AMAQI
10th Oct 2025828 AMAQI
10th Oct 2025939 AMAQI
10th Oct 20258810 AMAQI
10th Oct 202510911 AMAQI
10th Oct 202512512 PMAQI
10th Oct 20251231 PMAQI
10th Oct 20251222 PMAQI
10th Oct 20251393 PMAQI
10th Oct 20251434 PMAQI
10th Oct 20251415 PMAQI
10th Oct 20251526 PMAQI
10th Oct 20251437 PMAQI
10th Oct 20251508 PMAQI
10th Oct 20251589 PMAQI
10th Oct 202515610 PMAQI
10th Oct 202514711 PMAQI
11th Oct 202515612 AMAQI
11th Oct 20251581 AMAQI
11th Oct 20251632 AMAQI
11th Oct 20251683 AMAQI
11th Oct 20251644 AMAQI
11th Oct 20251585 AMAQI

26°C23/30°C

11th Oct 20251546 AMAQI
6 AM
11th Oct 20251237 AMAQI
11th Oct 20251018 AMAQI
11th Oct 20251049 AMAQI
11th Oct 20259210 AMAQI
11th Oct 20258911 AMAQI
11th Oct 20259112 PMAQI
12 PM
11th Oct 20251001 PMAQI
11th Oct 20251112 PMAQI
11th Oct 20251083 PMAQI
11th Oct 20251164 PMAQI
11th Oct 20251065 PMAQI
11th Oct 20251026 PMAQI
6 PM
11th Oct 20251077 PMAQI
11th Oct 2025968 PMAQI
11th Oct 20251069 PMAQI
11th Oct 20259710 PMAQI
11th Oct 202510611 PMAQI
12 AM
5 AM

--°C/°C

Day time
Avg. Highest Time
6 AM - 7 AM

71AQI

2 hours / Day
60 hours / Month
Avg. Lowest Time
3 PM - 5 PM

65AQI

3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 71), while the lowest AQI was between 3 PM to 5 PM (Avg. 65).
Night time
Avg. Highest Time
9 PM - 11 PM

74AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
7 PM

67AQI

1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 9 PM to 11 PM (Avg. 74), while the lowest AQI was between 7 PM to 7 PM (Avg. 67).

2025 Days Vs Air Quality

High Tech Zone, Hefei, Anhui, China

2025

12%

35

57%

161

27%

75

4%

11

0.3%

1

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

Good
35 Days
Moderate
161 Days
Poor
75 Days
Unhealthy
11 Days
Severe
0 Days
Hazardous
1 Days

Under WHO’s Safe Air Quality Limits: 12%

Health Risk Level:

Extreme

In 2025, 12% 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

High Tech Zone, 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
137AQI
2nd January 2025
184AQI
3rd January 2025
185AQI
4th January 2025
177AQI
5th January 2025
124AQI
6th January 2025
135AQI
7th January 2025
99AQI
8th January 2025
120AQI
9th January 2025
79AQI
10th January 2025
97AQI
11th January 2025
100AQI
12th January 2025
114AQI
13th January 2025
134AQI
14th January 2025
148AQI
15th January 2025
90AQI
16th January 2025
114AQI
17th January 2025
109AQI
18th January 2025
133AQI
19th January 2025
149AQI
20th January 2025
163AQI
21st January 2025
161AQI
22nd January 2025
188AQI
23rd January 2025
166AQI
24th January 2025
136AQI
25th January 2025
94AQI
26th January 2025
126AQI
27th January 2025
64AQI
28th January 2025
95AQI
29th January 2025
134AQI
30th January 2025
112AQI
31st January 2025
162AQI
1st February 2025
126AQI
2nd February 2025
131AQI
3rd February 2025
159AQI
4th February 2025
104AQI
5th February 2025
109AQI
6th February 2025
83AQI
7th February 2025
93AQI
8th February 2025
63AQI
9th February 2025
77AQI
10th February 2025
83AQI
11th February 2025
111AQI
12th February 2025
142AQI
13th February 2025
101AQI
14th February 2025
152AQI
15th February 2025
99AQI
16th February 2025
128AQI
17th February 2025
110AQI
18th February 2025
102AQI
19th February 2025
124AQI
20th February 2025
121AQI
21st February 2025
109AQI
22nd February 2025
131AQI
23rd February 2025
144AQI
24th February 2025
119AQI
25th February 2025
148AQI
26th February 2025
149AQI
27th February 2025
129AQI
28th February 2025
124AQI
1st March 2025
101AQI
2nd March 2025
79AQI
3rd March 2025
72AQI
4th March 2025
115AQI
5th March 2025
125AQI
6th March 2025
114AQI
7th March 2025
121AQI
8th March 2025
134AQI
9th March 2025
147AQI
10th March 2025
147AQI
11th March 2025
129AQI
12th March 2025
170AQI
13th March 2025
122AQI
14th March 2025
99AQI
15th March 2025
93AQI
16th March 2025
84AQI
17th March 2025
69AQI
18th March 2025
76AQI
19th March 2025
73AQI
20th March 2025
70AQI
21st March 2025
70AQI
22nd March 2025
78AQI
23rd March 2025
83AQI
24th March 2025
108AQI
25th March 2025
90AQI
26th March 2025
119AQI
27th March 2025
115AQI
28th March 2025
100AQI
29th March 2025
127AQI
30th March 2025
114AQI
31st March 2025
95AQI
1st April 2025
96AQI
2nd April 2025
102AQI
3rd April 2025
87AQI
4th April 2025
110AQI
5th April 2025
106AQI
6th April 2025
88AQI
7th April 2025
97AQI
8th April 2025
97AQI
9th April 2025
110AQI
10th April 2025
103AQI
11th April 2025
97AQI
12th April 2025
346AQI
13th April 2025
95AQI
14th April 2025
99AQI
15th April 2025
73AQI
16th April 2025
84AQI
17th April 2025
95AQI
18th April 2025
100AQI
19th April 2025
111AQI
20th April 2025
98AQI
21st April 2025
95AQI
22nd April 2025
119AQI
23rd April 2025
100AQI
24th April 2025
101AQI
25th April 2025
78AQI
26th April 2025
76AQI
27th April 2025
74AQI
28th April 2025
114AQI
29th April 2025
83AQI
30th April 2025
81AQI
1st May 2025
78AQI
2nd May 2025
77AQI
3rd May 2025
84AQI
4th May 2025
73AQI
5th May 2025
85AQI
6th May 2025
113AQI
7th May 2025
121AQI
8th May 2025
90AQI
9th May 2025
77AQI
10th May 2025
57AQI
11th May 2025
71AQI
12th May 2025
72AQI
13th May 2025
79AQI
14th May 2025
85AQI
15th May 2025
111AQI
16th May 2025
84AQI
17th May 2025
129AQI
18th May 2025
89AQI
19th May 2025
108AQI
20th May 2025
87AQI
21st May 2025
75AQI
22nd May 2025
80AQI
23rd May 2025
112AQI
24th May 2025
112AQI
25th May 2025
108AQI
26th May 2025
116AQI
27th May 2025
117AQI
28th May 2025
111AQI
29th May 2025
94AQI
30th May 2025
85AQI
31st May 2025
89AQI
1st June 2025
59AQI
2nd June 2025
59AQI
3rd June 2025
72AQI
4th June 2025
85AQI
5th June 2025
74AQI
6th June 2025
74AQI
7th June 2025
53AQI
8th June 2025
60AQI
9th June 2025
64AQI
10th June 2025
66AQI
11th June 2025
81AQI
12th June 2025
82AQI
13th June 2025
84AQI
14th June 2025
64AQI
15th June 2025
48AQI
16th June 2025
58AQI
17th June 2025
61AQI
18th June 2025
49AQI
19th June 2025
43AQI
20th June 2025
46AQI
21st June 2025
39AQI
22nd June 2025
27AQI
23rd June 2025
49AQI
24th June 2025
58AQI
25th June 2025
58AQI
26th June 2025
56AQI
27th June 2025
50AQI
28th June 2025
48AQI
29th June 2025
43AQI
30th June 2025
52AQI
1st July 2025
49AQI
2nd July 2025
49AQI
3rd July 2025
56AQI
4th July 2025
55AQI
5th July 2025
60AQI
6th July 2025
66AQI
7th July 2025
68AQI
8th July 2025
53AQI
9th July 2025
51AQI
10th July 2025
69AQI
11th July 2025
68AQI
12th July 2025
61AQI
13th July 2025
61AQI
14th July 2025
65AQI
15th July 2025
62AQI
16th July 2025
64AQI
17th July 2025
61AQI
18th July 2025
62AQI
19th July 2025
64AQI
20th July 2025
47AQI
21st July 2025
45AQI
22nd July 2025
41AQI
23rd July 2025
46AQI
24th July 2025
45AQI
25th July 2025
55AQI
26th July 2025
49AQI
27th July 2025
50AQI
28th July 2025
43AQI
29th July 2025
54AQI
30th July 2025
46AQI
31st July 2025
54AQI
1st August 2025
51AQI
2nd August 2025
52AQI
3rd August 2025
56AQI
4th August 2025
58AQI
5th August 2025
62AQI
6th August 2025
57AQI
7th August 2025
52AQI
8th August 2025
50AQI
9th August 2025
54AQI
10th August 2025
41AQI
11th August 2025
40AQI
12th August 2025
51AQI
13th August 2025
56AQI
14th August 2025
52AQI
15th August 2025
48AQI
16th August 2025
48AQI
17th August 2025
53AQI
18th August 2025
53AQI
19th August 2025
56AQI
20th August 2025
50AQI
21st August 2025
51AQI
22nd August 2025
50AQI
23rd August 2025
48AQI
24th August 2025
52AQI
25th August 2025
56AQI
26th August 2025
49AQI
27th August 2025
58AQI
28th August 2025
59AQI
29th August 2025
60AQI
30th August 2025
57AQI
31st August 2025
52AQI
1st September 2025
57AQI
2nd September 2025
58AQI
3rd September 2025
60AQI
4th September 2025
63AQI
5th September 2025
66AQI
6th September 2025
67AQI
7th September 2025
71AQI
8th September 2025
66AQI
9th September 2025
58AQI
10th September 2025
59AQI
11th September 2025
59AQI
12th September 2025
53AQI
13th September 2025
52AQI
14th September 2025
54AQI
15th September 2025
54AQI
16th September 2025
61AQI
17th September 2025
53AQI
18th September 2025
50AQI
19th September 2025
56AQI
20th September 2025
55AQI
21st September 2025
63AQI
22nd September 2025
58AQI
23rd September 2025
74AQI
24th September 2025
47AQI
25th September 2025
40AQI
26th September 2025
47AQI
27th September 2025
54AQI
28th September 2025
53AQI
29th September 2025
80AQI
30th September 2025
54AQI
1st October 2025
66AQI
2nd October 2025
76AQI
3rd October 2025
49AQI
4th October 2025
69AQI
5th October 2025
117AQI
6th October 2025
131AQI
7th October 2025
141AQI
8th October 2025
102AQI
9th October 2025
94AQI
10th October 2025
107AQI
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

130AQI

117AQI

104AQI

104AQI

93AQI

59AQI

55AQI

53AQI

58AQI

95AQI

No. of days

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

202586AQI

8
15
8
6
20
2
15
15
1
20
9
1
20
11
10
20
11
20
9
22
4
26
1
4
5
35
161
75
11
1

Highest AQI recorded in

January

130AQI

Lowest AQI recorded in

August

53AQI

202493AQI

1
6
12
10
2
2
10
12
4
1
10
17
4
8
20
2
19
12
7
22
1
20
11
4
27
6
23
1
5
13
11
2
2
18
7
3
1
24
6
47
168
117
31
3

Highest AQI recorded in

January

134AQI

Lowest AQI recorded in

July

47AQI

202396AQI

9
15
7
2
9
13
4
1
10
18
2
17
12
1
1
22
7
1
1
27
2
10
21
1
30
2
24
4
2
16
11
2
2
9
14
1
2
9
13
4
3
24
203
109
21
4

Highest AQI recorded in

January

126AQI

Lowest AQI recorded in

July

58AQI

202294AQI

1
4
10
16
6
13
2
3
14
12
2
22
8
1
22
8
7
22
1
5
20
1
2
3
23
3
4
22
5
1
13
14
2
1
8
13
7
2
27
178
87
29
2

Highest AQI recorded in

January

140AQI

Lowest AQI recorded in

July

60AQI

202195AQI

6
14
10
1
1
12
12
3
9
20
2
17
12
1
2
22
7
1
23
6
14
17
4
23
4
3
25
2
4
14
13
1
15
10
4
10
13
8
30
193
113
28
1

Highest AQI recorded in

January

135AQI

Lowest AQI recorded in

July

55AQI

202093AQI

1
10
2
14
7
12
6
8
21
1
7
20
4
5
25
1
25
5
16
14
1
12
17
1
4
10
16
1
21
159
67
18
1

Highest AQI recorded in

December

146AQI

Lowest AQI recorded in

August

66AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
96AQI
Least Polluted Year Recorded
2025(Avg.)
86AQI

High Tech Zone's annual 2025 AQI (86) shows an average percentage change of -8.6% (improved AQI) compared to previous years: 2020 (93), 2021 (95), 2022 (94), 2023 (96), 2024 (93).