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+
August Air Quality Analysis
Hefei, Anhui, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
29th Aug 2021
118AQILowest AQI recorded on
1st Aug 2024
37AQISame Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 58 of Moderate air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Hefei, Anhui, China
AQI
Day
Night
.
5 AM5th Aug 2025
7 PM
4 AM6th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
10AM5th Aug
81AQI
Avg. Lowest Time
2AM6th Aug
57AQI
In the last 24 hours,
Hefei's AQI reached its highest point of 81 at 10 AM during the Night, while the lowest point, 57, was recorded at 2 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hefei, Anhui, China
JulAug
07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th
Day
Night
7th Jul 2025615 AMAQI
7th Jul 2025616 AMAQI
7th Jul 2025617 AMAQI
7th Jul 2025848 AMAQI
7th Jul 2025899 AMAQI
7th Jul 20259110 AMAQI
7th Jul 20257711 AMAQI
7th Jul 20257212 PMAQI
7th Jul 2025721 PMAQI
7th Jul 2025712 PMAQI
7th Jul 2025713 PMAQI
7th Jul 2025704 PMAQI
7th Jul 2025715 PMAQI
7th Jul 2025706 PMAQI
7th Jul 2025677 PMAQI
7th Jul 2025658 PMAQI
7th Jul 2025639 PMAQI
7th Jul 20256410 PMAQI
7th Jul 20256411 PMAQI
8th Jul 20256212 AMAQI
8th Jul 2025611 AMAQI
8th Jul 2025612 AMAQI
8th Jul 2025623 AMAQI
8th Jul 2025654 AMAQI
32°C28/37°C
8th Jul 2025645 AMAQI
8th Jul 2025646 AMAQI
8th Jul 2025647 AMAQI
8th Jul 2025398 AMAQI
8th Jul 2025329 AMAQI
8th Jul 20253210 AMAQI
8th Jul 20253311 AMAQI
8th Jul 20254312 PMAQI
8th Jul 2025421 PMAQI
8th Jul 2025442 PMAQI
8th Jul 2025433 PMAQI
8th Jul 2025404 PMAQI
8th Jul 2025405 PMAQI
8th Jul 2025476 PMAQI
8th Jul 2025537 PMAQI
8th Jul 2025568 PMAQI
8th Jul 2025579 PMAQI
8th Jul 20255610 PMAQI
8th Jul 20255611 PMAQI
9th Jul 20255612 AMAQI
9th Jul 2025631 AMAQI
9th Jul 2025622 AMAQI
9th Jul 2025613 AMAQI
9th Jul 2025594 AMAQI
29°C26/35°C
9th Jul 2025595 AMAQI
9th Jul 2025596 AMAQI
9th Jul 2025597 AMAQI
9th Jul 2025398 AMAQI
9th Jul 2025359 AMAQI
9th Jul 20254310 AMAQI
9th Jul 20253911 AMAQI
9th Jul 20254712 PMAQI
9th Jul 2025451 PMAQI
9th Jul 2025452 PMAQI
9th Jul 2025433 PMAQI
9th Jul 2025454 PMAQI
9th Jul 2025435 PMAQI
9th Jul 2025426 PMAQI
9th Jul 2025477 PMAQI
9th Jul 2025558 PMAQI
9th Jul 2025559 PMAQI
9th Jul 20255610 PMAQI
9th Jul 20255511 PMAQI
10th Jul 20255612 AMAQI
10th Jul 2025601 AMAQI
10th Jul 2025602 AMAQI
10th Jul 2025593 AMAQI
10th Jul 2025574 AMAQI
29°C25/33°C
10th Jul 2025575 AMAQI
10th Jul 2025576 AMAQI
10th Jul 2025577 AMAQI
10th Jul 2025638 AMAQI
10th Jul 2025719 AMAQI
10th Jul 20257410 AMAQI
10th Jul 20258111 AMAQI
10th Jul 20258112 PMAQI
10th Jul 2025831 PMAQI
10th Jul 2025842 PMAQI
10th Jul 2025793 PMAQI
10th Jul 2025814 PMAQI
10th Jul 2025865 PMAQI
10th Jul 2025876 PMAQI
10th Jul 2025797 PMAQI
10th Jul 2025698 PMAQI
10th Jul 2025689 PMAQI
10th Jul 20256410 PMAQI
10th Jul 20256411 PMAQI
11th Jul 20256512 AMAQI
11th Jul 2025581 AMAQI
11th Jul 2025582 AMAQI
11th Jul 2025603 AMAQI
11th Jul 2025614 AMAQI
28°C25/32°C
11th Jul 2025615 AMAQI
11th Jul 2025616 AMAQI
11th Jul 2025617 AMAQI
11th Jul 2025998 AMAQI
11th Jul 20251059 AMAQI
11th Jul 20259310 AMAQI
11th Jul 20259311 AMAQI
11th Jul 20258812 PMAQI
11th Jul 2025841 PMAQI
11th Jul 2025772 PMAQI
11th Jul 2025693 PMAQI
11th Jul 2025614 PMAQI
11th Jul 2025555 PMAQI
11th Jul 2025616 PMAQI
11th Jul 2025657 PMAQI
11th Jul 2025638 PMAQI
11th Jul 2025619 PMAQI
11th Jul 20255610 PMAQI
11th Jul 20255611 PMAQI
12th Jul 20255712 AMAQI
12th Jul 2025611 AMAQI
12th Jul 2025612 AMAQI
12th Jul 2025633 AMAQI
12th Jul 2025674 AMAQI
28°C24/33°C
12th Jul 2025665 AMAQI
12th Jul 2025676 AMAQI
12th Jul 2025677 AMAQI
12th Jul 2025658 AMAQI
12th Jul 2025689 AMAQI
12th Jul 20256910 AMAQI
12th Jul 20257011 AMAQI
12th Jul 20256612 PMAQI
12th Jul 2025641 PMAQI
12th Jul 2025642 PMAQI
12th Jul 2025643 PMAQI
12th Jul 2025644 PMAQI
12th Jul 2025645 PMAQI
12th Jul 2025646 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025608 PMAQI
12th Jul 2025589 PMAQI
12th Jul 20255910 PMAQI
12th Jul 20256011 PMAQI
13th Jul 20256112 AMAQI
13th Jul 2025631 AMAQI
13th Jul 2025632 AMAQI
13th Jul 2025643 AMAQI
13th Jul 2025644 AMAQI
27°C24/32°C
13th Jul 2025645 AMAQI
13th Jul 2025646 AMAQI
13th Jul 2025647 AMAQI
13th Jul 2025658 AMAQI
13th Jul 2025719 AMAQI
13th Jul 20257110 AMAQI
13th Jul 20256511 AMAQI
13th Jul 20256212 PMAQI
13th Jul 2025611 PMAQI
13th Jul 2025602 PMAQI
13th Jul 2025593 PMAQI
13th Jul 2025554 PMAQI
13th Jul 2025535 PMAQI
13th Jul 2025506 PMAQI
13th Jul 2025547 PMAQI
13th Jul 2025608 PMAQI
13th Jul 2025629 PMAQI
13th Jul 20256410 PMAQI
13th Jul 20256411 PMAQI
14th Jul 20256512 AMAQI
14th Jul 2025631 AMAQI
14th Jul 2025632 AMAQI
14th Jul 2025633 AMAQI
14th Jul 2025634 AMAQI
29°C24/33°C
14th Jul 2025645 AMAQI
14th Jul 2025646 AMAQI
14th Jul 2025637 AMAQI
14th Jul 2025638 AMAQI
14th Jul 2025649 AMAQI
14th Jul 20256210 AMAQI
14th Jul 20256311 AMAQI
14th Jul 20256212 PMAQI
14th Jul 2025621 PMAQI
14th Jul 2025622 PMAQI
14th Jul 2025723 PMAQI
14th Jul 2025754 PMAQI
14th Jul 2025715 PMAQI
14th Jul 2025676 PMAQI
14th Jul 2025707 PMAQI
14th Jul 2025698 PMAQI
14th Jul 2025709 PMAQI
14th Jul 20257110 PMAQI
14th Jul 20257311 PMAQI
15th Jul 20257312 AMAQI
15th Jul 2025661 AMAQI
15th Jul 2025642 AMAQI
15th Jul 2025643 AMAQI
15th Jul 2025644 AMAQI
30°C26/35°C
15th Jul 2025645 AMAQI
15th Jul 2025646 AMAQI
15th Jul 2025637 AMAQI
15th Jul 2025738 AMAQI
15th Jul 2025789 AMAQI
15th Jul 20257510 AMAQI
15th Jul 20257411 AMAQI
15th Jul 20257012 PMAQI
15th Jul 2025671 PMAQI
15th Jul 2025642 PMAQI
15th Jul 2025593 PMAQI
15th Jul 2025584 PMAQI
15th Jul 2025585 PMAQI
15th Jul 2025616 PMAQI
15th Jul 2025607 PMAQI
15th Jul 2025628 PMAQI
15th Jul 2025649 PMAQI
15th Jul 20256510 PMAQI
15th Jul 20256511 PMAQI
16th Jul 20256412 AMAQI
16th Jul 2025661 AMAQI
16th Jul 2025662 AMAQI
16th Jul 2025653 AMAQI
16th Jul 2025664 AMAQI
30°C25/35°C
16th Jul 2025665 AMAQI
16th Jul 2025666 AMAQI
16th Jul 2025667 AMAQI
16th Jul 2025768 AMAQI
16th Jul 2025789 AMAQI
16th Jul 20257710 AMAQI
16th Jul 20257111 AMAQI
16th Jul 20256712 PMAQI
16th Jul 2025661 PMAQI
16th Jul 2025652 PMAQI
16th Jul 2025663 PMAQI
16th Jul 2025634 PMAQI
16th Jul 2025655 PMAQI
16th Jul 2025616 PMAQI
16th Jul 2025627 PMAQI
16th Jul 2025658 PMAQI
16th Jul 2025669 PMAQI
16th Jul 20256710 PMAQI
16th Jul 20256611 PMAQI
17th Jul 20256212 AMAQI
17th Jul 2025651 AMAQI
17th Jul 2025652 AMAQI
17th Jul 2025663 AMAQI
17th Jul 2025674 AMAQI
31°C27/38°C
17th Jul 2025675 AMAQI
17th Jul 2025676 AMAQI
17th Jul 2025667 AMAQI
17th Jul 2025448 AMAQI
17th Jul 2025419 AMAQI
17th Jul 20255210 AMAQI
17th Jul 20256011 AMAQI
17th Jul 20256612 PMAQI
17th Jul 2025671 PMAQI
17th Jul 2025622 PMAQI
17th Jul 2025553 PMAQI
17th Jul 2025544 PMAQI
17th Jul 2025535 PMAQI
17th Jul 2025526 PMAQI
17th Jul 2025587 PMAQI
17th Jul 2025658 PMAQI
17th Jul 2025669 PMAQI
17th Jul 20256610 PMAQI
17th Jul 20256411 PMAQI
18th Jul 20256412 AMAQI
18th Jul 2025651 AMAQI
18th Jul 2025652 AMAQI
18th Jul 2025643 AMAQI
18th Jul 2025634 AMAQI
30°C27/34°C
18th Jul 2025635 AMAQI
18th Jul 2025636 AMAQI
18th Jul 2025637 AMAQI
18th Jul 2025828 AMAQI
18th Jul 2025849 AMAQI
18th Jul 20257310 AMAQI
18th Jul 20256511 AMAQI
18th Jul 20256112 PMAQI
18th Jul 2025591 PMAQI
18th Jul 2025562 PMAQI
18th Jul 2025543 PMAQI
18th Jul 2025564 PMAQI
18th Jul 2025505 PMAQI
18th Jul 2025506 PMAQI
18th Jul 2025527 PMAQI
18th Jul 2025598 PMAQI
18th Jul 2025629 PMAQI
18th Jul 20256410 PMAQI
18th Jul 20256411 PMAQI
19th Jul 20256312 AMAQI
19th Jul 2025641 AMAQI
19th Jul 2025642 AMAQI
19th Jul 2025643 AMAQI
19th Jul 2025644 AMAQI
29°C24/33°C
19th Jul 2025645 AMAQI
19th Jul 2025646 AMAQI
19th Jul 2025647 AMAQI
19th Jul 2025648 AMAQI
19th Jul 2025629 AMAQI
19th Jul 20256410 AMAQI
19th Jul 20256311 AMAQI
19th Jul 20256612 PMAQI
19th Jul 2025661 PMAQI
19th Jul 2025652 PMAQI
19th Jul 2025653 PMAQI
19th Jul 2025664 PMAQI
19th Jul 2025635 PMAQI
19th Jul 2025636 PMAQI
19th Jul 2025657 PMAQI
19th Jul 2025648 PMAQI
19th Jul 2025659 PMAQI
19th Jul 20256510 PMAQI
19th Jul 20256411 PMAQI
20th Jul 20256212 AMAQI
20th Jul 2025641 AMAQI
20th Jul 2025642 AMAQI
20th Jul 2025643 AMAQI
20th Jul 2025644 AMAQI
28°C24/33°C
20th Jul 2025645 AMAQI
20th Jul 2025646 AMAQI
20th Jul 2025647 AMAQI
20th Jul 2025448 AMAQI
20th Jul 2025249 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20253111 AMAQI
20th Jul 20253812 PMAQI
20th Jul 2025311 PMAQI
20th Jul 2025312 PMAQI
20th Jul 2025343 PMAQI
20th Jul 2025344 PMAQI
20th Jul 2025335 PMAQI
20th Jul 2025346 PMAQI
20th Jul 2025457 PMAQI
20th Jul 2025568 PMAQI
20th Jul 2025579 PMAQI
20th Jul 20255810 PMAQI
20th Jul 20255711 PMAQI
21st Jul 20255812 AMAQI
21st Jul 2025631 AMAQI
21st Jul 2025632 AMAQI
21st Jul 2025623 AMAQI
21st Jul 2025594 AMAQI
30°C26/35°C
21st Jul 2025595 AMAQI
21st Jul 2025596 AMAQI
21st Jul 2025597 AMAQI
21st Jul 2025358 AMAQI
21st Jul 2025299 AMAQI
21st Jul 20252910 AMAQI
21st Jul 20253011 AMAQI
21st Jul 20253012 PMAQI
21st Jul 2025301 PMAQI
21st Jul 2025302 PMAQI
21st Jul 2025303 PMAQI
21st Jul 2025284 PMAQI
21st Jul 2025295 PMAQI
21st Jul 2025346 PMAQI
21st Jul 2025407 PMAQI
21st Jul 2025538 PMAQI
21st Jul 2025559 PMAQI
21st Jul 20255410 PMAQI
21st Jul 20255311 PMAQI
22nd Jul 20255512 AMAQI
22nd Jul 2025591 AMAQI
22nd Jul 2025602 AMAQI
22nd Jul 2025583 AMAQI
22nd Jul 2025564 AMAQI
30°C26/34°C
22nd Jul 2025565 AMAQI
22nd Jul 2025566 AMAQI
22nd Jul 2025567 AMAQI
22nd Jul 2025308 AMAQI
22nd Jul 2025219 AMAQI
22nd Jul 20252010 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252712 PMAQI
22nd Jul 2025281 PMAQI
22nd Jul 2025262 PMAQI
22nd Jul 2025283 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025305 PMAQI
22nd Jul 2025306 PMAQI
22nd Jul 2025337 PMAQI
22nd Jul 2025458 PMAQI
22nd Jul 2025519 PMAQI
22nd Jul 20255210 PMAQI
22nd Jul 20255211 PMAQI
23rd Jul 20255312 AMAQI
23rd Jul 2025571 AMAQI
23rd Jul 2025572 AMAQI
23rd Jul 2025563 AMAQI
23rd Jul 2025544 AMAQI
29°C26/33°C
23rd Jul 2025545 AMAQI
23rd Jul 2025546 AMAQI
23rd Jul 2025537 AMAQI
23rd Jul 2025398 AMAQI
23rd Jul 2025359 AMAQI
23rd Jul 20253810 AMAQI
23rd Jul 20254311 AMAQI
23rd Jul 20253812 PMAQI
23rd Jul 2025411 PMAQI
23rd Jul 2025432 PMAQI
23rd Jul 2025393 PMAQI
23rd Jul 2025344 PMAQI
23rd Jul 2025345 PMAQI
23rd Jul 2025356 PMAQI
23rd Jul 2025407 PMAQI
23rd Jul 2025498 PMAQI
23rd Jul 2025519 PMAQI
23rd Jul 20255210 PMAQI
23rd Jul 20255311 PMAQI
24th Jul 20255312 AMAQI
24th Jul 2025531 AMAQI
24th Jul 2025542 AMAQI
24th Jul 2025543 AMAQI
24th Jul 2025534 AMAQI
29°C26/34°C
24th Jul 2025535 AMAQI
24th Jul 2025536 AMAQI
24th Jul 2025537 AMAQI
24th Jul 2025408 AMAQI
24th Jul 2025399 AMAQI
24th Jul 20253810 AMAQI
24th Jul 20253911 AMAQI
24th Jul 20254012 PMAQI
24th Jul 2025391 PMAQI
24th Jul 2025402 PMAQI
24th Jul 2025383 PMAQI
24th Jul 2025354 PMAQI
24th Jul 2025365 PMAQI
24th Jul 2025366 PMAQI
24th Jul 2025437 PMAQI
24th Jul 2025528 PMAQI
24th Jul 2025529 PMAQI
24th Jul 20255210 PMAQI
24th Jul 20255211 PMAQI
25th Jul 20255212 AMAQI
25th Jul 2025531 AMAQI
25th Jul 2025542 AMAQI
25th Jul 2025533 AMAQI
25th Jul 2025524 AMAQI
30°C25/35°C
25th Jul 2025525 AMAQI
25th Jul 2025526 AMAQI
25th Jul 2025527 AMAQI
25th Jul 2025478 AMAQI
25th Jul 2025499 AMAQI
25th Jul 20255710 AMAQI
25th Jul 20256111 AMAQI
25th Jul 20256112 PMAQI
25th Jul 2025611 PMAQI
25th Jul 2025602 PMAQI
25th Jul 2025583 PMAQI
25th Jul 2025554 PMAQI
25th Jul 2025555 PMAQI
25th Jul 2025576 PMAQI
25th Jul 2025587 PMAQI
25th Jul 2025598 PMAQI
25th Jul 2025599 PMAQI
25th Jul 20255910 PMAQI
25th Jul 20255711 PMAQI
26th Jul 20255412 AMAQI
26th Jul 2025531 AMAQI
26th Jul 2025532 AMAQI
26th Jul 2025533 AMAQI
26th Jul 2025544 AMAQI
30°C25/35°C
26th Jul 2025545 AMAQI
26th Jul 2025546 AMAQI
26th Jul 2025547 AMAQI
26th Jul 2025518 AMAQI
26th Jul 2025469 AMAQI
26th Jul 20255310 AMAQI
26th Jul 20254511 AMAQI
26th Jul 20254312 PMAQI
26th Jul 2025441 PMAQI
26th Jul 2025412 PMAQI
26th Jul 2025373 PMAQI
26th Jul 2025384 PMAQI
26th Jul 2025395 PMAQI
26th Jul 2025396 PMAQI
26th Jul 2025437 PMAQI
26th Jul 2025498 PMAQI
26th Jul 2025519 PMAQI
26th Jul 20255010 PMAQI
26th Jul 20255011 PMAQI
27th Jul 20255012 AMAQI
27th Jul 2025541 AMAQI
27th Jul 2025542 AMAQI
27th Jul 2025543 AMAQI
27th Jul 2025534 AMAQI
29°C25/33°C
27th Jul 2025535 AMAQI
27th Jul 2025536 AMAQI
27th Jul 2025537 AMAQI
27th Jul 2025498 AMAQI
27th Jul 2025489 AMAQI
27th Jul 20255210 AMAQI
27th Jul 20255611 AMAQI
27th Jul 20255412 PMAQI
27th Jul 2025551 PMAQI
27th Jul 2025532 PMAQI
27th Jul 2025543 PMAQI
27th Jul 2025494 PMAQI
27th Jul 2025445 PMAQI
27th Jul 2025366 PMAQI
27th Jul 2025367 PMAQI
27th Jul 2025478 PMAQI
27th Jul 2025519 PMAQI
27th Jul 20255210 PMAQI
27th Jul 20255111 PMAQI
28th Jul 20255212 AMAQI
28th Jul 2025531 AMAQI
28th Jul 2025532 AMAQI
28th Jul 2025533 AMAQI
28th Jul 2025534 AMAQI
29°C25/33°C
28th Jul 2025545 AMAQI
28th Jul 2025546 AMAQI
28th Jul 2025537 AMAQI
28th Jul 2025458 AMAQI
28th Jul 2025439 AMAQI
28th Jul 20254310 AMAQI
28th Jul 20254611 AMAQI
28th Jul 20254412 PMAQI
28th Jul 2025441 PMAQI
28th Jul 2025412 PMAQI
28th Jul 2025333 PMAQI
28th Jul 2025314 PMAQI
28th Jul 2025295 PMAQI
28th Jul 2025276 PMAQI
28th Jul 2025347 PMAQI
28th Jul 2025448 PMAQI
28th Jul 2025459 PMAQI
28th Jul 20254810 PMAQI
28th Jul 20254911 PMAQI
29th Jul 20255012 AMAQI
29th Jul 2025531 AMAQI
29th Jul 2025542 AMAQI
29th Jul 2025533 AMAQI
29th Jul 2025524 AMAQI
28°C25/33°C
29th Jul 2025525 AMAQI
29th Jul 2025526 AMAQI
29th Jul 2025527 AMAQI
29th Jul 2025528 AMAQI
29th Jul 2025569 AMAQI
29th Jul 20255510 AMAQI
29th Jul 20255711 AMAQI
29th Jul 20255712 PMAQI
29th Jul 2025581 PMAQI
29th Jul 2025562 PMAQI
29th Jul 2025533 PMAQI
29th Jul 2025534 PMAQI
29th Jul 2025555 PMAQI
29th Jul 2025546 PMAQI
29th Jul 2025537 PMAQI
29th Jul 2025518 PMAQI
29th Jul 2025539 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255611 PMAQI
30th Jul 20255612 AMAQI
30th Jul 2025531 AMAQI
30th Jul 2025532 AMAQI
30th Jul 2025533 AMAQI
30th Jul 2025534 AMAQI
29°C25/34°C
30th Jul 2025535 AMAQI
30th Jul 2025536 AMAQI
30th Jul 2025537 AMAQI
30th Jul 2025518 AMAQI
30th Jul 2025489 AMAQI
30th Jul 20253910 AMAQI
30th Jul 20253411 AMAQI
30th Jul 20253612 PMAQI
30th Jul 2025341 PMAQI
30th Jul 2025322 PMAQI
30th Jul 2025333 PMAQI
30th Jul 2025364 PMAQI
30th Jul 2025375 PMAQI
30th Jul 2025326 PMAQI
30th Jul 2025407 PMAQI
30th Jul 2025478 PMAQI
30th Jul 2025469 PMAQI
30th Jul 20254610 PMAQI
30th Jul 20254711 PMAQI
31st Jul 20254712 AMAQI
31st Jul 2025531 AMAQI
31st Jul 2025542 AMAQI
31st Jul 2025543 AMAQI
31st Jul 2025544 AMAQI
27°C23/32°C
31st Jul 2025545 AMAQI
31st Jul 2025546 AMAQI
31st Jul 2025547 AMAQI
31st Jul 2025548 AMAQI
31st Jul 2025549 AMAQI
31st Jul 20255110 AMAQI
31st Jul 20254811 AMAQI
31st Jul 20255612 PMAQI
31st Jul 2025591 PMAQI
31st Jul 2025552 PMAQI
31st Jul 2025583 PMAQI
31st Jul 2025624 PMAQI
31st Jul 2025545 PMAQI
31st Jul 2025496 PMAQI
31st Jul 2025487 PMAQI
31st Jul 2025538 PMAQI
31st Jul 2025529 PMAQI
31st Jul 20255510 PMAQI
31st Jul 20255611 PMAQI
1st Aug 20255612 AMAQI
1st Aug 2025541 AMAQI
1st Aug 2025542 AMAQI
1st Aug 2025543 AMAQI
1st Aug 2025544 AMAQI
24°C22/27°C
1st Aug 2025535 AMAQI
1st Aug 2025536 AMAQI
1st Aug 2025537 AMAQI
1st Aug 2025628 AMAQI
1st Aug 2025629 AMAQI
1st Aug 20256010 AMAQI
1st Aug 20256111 AMAQI
1st Aug 20255912 PMAQI
1st Aug 2025531 PMAQI
1st Aug 2025482 PMAQI
1st Aug 2025413 PMAQI
1st Aug 2025424 PMAQI
1st Aug 2025355 PMAQI
1st Aug 2025436 PMAQI
1st Aug 2025437 PMAQI
1st Aug 2025488 PMAQI
1st Aug 2025489 PMAQI
1st Aug 20254810 PMAQI
1st Aug 20255011 PMAQI
2nd Aug 20254712 AMAQI
2nd Aug 2025531 AMAQI
2nd Aug 2025542 AMAQI
2nd Aug 2025543 AMAQI
2nd Aug 2025544 AMAQI
25°C24/27°C
2nd Aug 2025555 AMAQI
2nd Aug 2025556 AMAQI
2nd Aug 2025557 AMAQI
2nd Aug 2025488 AMAQI
2nd Aug 2025449 AMAQI
2nd Aug 20254810 AMAQI
2nd Aug 20254611 AMAQI
2nd Aug 20254112 PMAQI
2nd Aug 2025481 PMAQI
2nd Aug 2025442 PMAQI
2nd Aug 2025483 PMAQI
2nd Aug 2025454 PMAQI
2nd Aug 2025435 PMAQI
2nd Aug 2025486 PMAQI
2nd Aug 2025517 PMAQI
2nd Aug 2025538 PMAQI
2nd Aug 2025559 PMAQI
2nd Aug 20255510 PMAQI
2nd Aug 20255511 PMAQI
3rd Aug 20255412 AMAQI
3rd Aug 2025541 AMAQI
3rd Aug 2025562 AMAQI
3rd Aug 2025533 AMAQI
3rd Aug 2025534 AMAQI
28°C24/32°C
3rd Aug 2025535 AMAQI
3rd Aug 2025536 AMAQI
3rd Aug 2025537 AMAQI
3rd Aug 2025568 AMAQI
3rd Aug 2025609 AMAQI
3rd Aug 20256410 AMAQI
3rd Aug 20256111 AMAQI
3rd Aug 20256012 PMAQI
3rd Aug 2025531 PMAQI
3rd Aug 2025542 PMAQI
3rd Aug 2025543 PMAQI
3rd Aug 2025524 PMAQI
3rd Aug 2025595 PMAQI
3rd Aug 2025596 PMAQI
3rd Aug 2025577 PMAQI
3rd Aug 2025588 PMAQI
3rd Aug 2025589 PMAQI
3rd Aug 20255910 PMAQI
3rd Aug 20255711 PMAQI
4th Aug 20255712 AMAQI
4th Aug 2025541 AMAQI
4th Aug 2025542 AMAQI
4th Aug 2025543 AMAQI
4th Aug 2025554 AMAQI
30°C26/34°C
4th Aug 2025545 AMAQI
4th Aug 2025556 AMAQI
4th Aug 2025547 AMAQI
4th Aug 2025688 AMAQI
4th Aug 2025679 AMAQI
4th Aug 20256810 AMAQI
4th Aug 20256611 AMAQI
4th Aug 20256912 PMAQI
4th Aug 2025601 PMAQI
4th Aug 2025592 PMAQI
4th Aug 2025593 PMAQI
4th Aug 2025584 PMAQI
4th Aug 2025605 PMAQI
4th Aug 2025616 PMAQI
4th Aug 2025617 PMAQI
4th Aug 2025608 PMAQI
4th Aug 2025609 PMAQI
4th Aug 20256110 PMAQI
4th Aug 20255911 PMAQI
5th Aug 20255712 AMAQI
5th Aug 2025551 AMAQI
5th Aug 2025552 AMAQI
5th Aug 2025573 AMAQI
5th Aug 2025574 AMAQI
31°C27/35°C
5th Aug 2025585 AMAQI
5th Aug 2025586 AMAQI
5th Aug 2025577 AMAQI
5th Aug 2025738 AMAQI
5th Aug 2025799 AMAQI
5th Aug 20258110 AMAQI
5th Aug 20258011 AMAQI
5th Aug 20257512 PMAQI
5th Aug 2025731 PMAQI
5th Aug 2025672 PMAQI
5th Aug 2025673 PMAQI
5th Aug 2025654 PMAQI
5th Aug 2025655 PMAQI
5th Aug 2025636 PMAQI
5th Aug 2025617 PMAQI
5th Aug 2025648 PMAQI
5th Aug 2025639 PMAQI
5th Aug 20256510 PMAQI
5th Aug 20256611 PMAQI
6th Aug 20256212 AMAQI
6th Aug 2025571 AMAQI
6th Aug 2025572 AMAQI
6th Aug 2025593 AMAQI
6th Aug 2025604 AMAQI
--°C/°C
6th Aug 2025615 AMAQI
5 AM6th Aug 2025616 AMAQI
6th Aug 2025617 AMAQI
12 PM
7 PM
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
55AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
55AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 55), while the lowest AQI was between 5 AM to 7 PM (Avg. 55).
Night time
Avg. Highest Time
12 AM - 11 PM
58AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
58AQI
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. 58), while the lowest AQI was between 12 AM to 11 PM (Avg. 58).
2025 Days Vs Air Quality
Hefei, Anhui, China
2025
9%
20
49%
106
35%
76
6%
13
0.4%
1
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Good
20 DaysModerate
106 DaysPoor
76 DaysUnhealthy
13 DaysSevere
0 DaysHazardous
1 DaysUnder WHO’s Safe Air Quality Limits: 9%
Health Risk Level:
Extreme
In 2025, 9% of 217 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
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.
1st January 2025
143AQI
143AQI
2nd January 2025
180AQI
180AQI
3rd January 2025
177AQI
177AQI
4th January 2025
175AQI
175AQI
5th January 2025
125AQI
125AQI
6th January 2025
134AQI
134AQI
7th January 2025
101AQI
101AQI
8th January 2025
122AQI
122AQI
9th January 2025
78AQI
78AQI
10th January 2025
101AQI
101AQI
11th January 2025
104AQI
104AQI
12th January 2025
115AQI
115AQI
13th January 2025
138AQI
138AQI
14th January 2025
149AQI
149AQI
15th January 2025
92AQI
92AQI
16th January 2025
116AQI
116AQI
17th January 2025
119AQI
119AQI
18th January 2025
137AQI
137AQI
19th January 2025
153AQI
153AQI
20th January 2025
167AQI
167AQI
21st January 2025
165AQI
165AQI
22nd January 2025
187AQI
187AQI
23rd January 2025
166AQI
166AQI
24th January 2025
132AQI
132AQI
25th January 2025
92AQI
92AQI
26th January 2025
125AQI
125AQI
27th January 2025
64AQI
64AQI
28th January 2025
99AQI
99AQI
29th January 2025
136AQI
136AQI
30th January 2025
116AQI
116AQI
31st January 2025
159AQI
159AQI
1st February 2025
115AQI
115AQI
2nd February 2025
126AQI
126AQI
3rd February 2025
152AQI
152AQI
4th February 2025
105AQI
105AQI
5th February 2025
110AQI
110AQI
6th February 2025
84AQI
84AQI
7th February 2025
91AQI
91AQI
8th February 2025
63AQI
63AQI
9th February 2025
78AQI
78AQI
10th February 2025
87AQI
87AQI
11th February 2025
114AQI
114AQI
12th February 2025
143AQI
143AQI
13th February 2025
101AQI
101AQI
14th February 2025
154AQI
154AQI
15th February 2025
100AQI
100AQI
16th February 2025
128AQI
128AQI
17th February 2025
107AQI
107AQI
18th February 2025
106AQI
106AQI
19th February 2025
124AQI
124AQI
20th February 2025
120AQI
120AQI
21st February 2025
109AQI
109AQI
22nd February 2025
130AQI
130AQI
23rd February 2025
144AQI
144AQI
24th February 2025
117AQI
117AQI
25th February 2025
149AQI
149AQI
26th February 2025
151AQI
151AQI
27th February 2025
130AQI
130AQI
28th February 2025
123AQI
123AQI
1st March 2025
102AQI
102AQI
2nd March 2025
82AQI
82AQI
3rd March 2025
71AQI
71AQI
4th March 2025
118AQI
118AQI
5th March 2025
125AQI
125AQI
6th March 2025
116AQI
116AQI
7th March 2025
126AQI
126AQI
8th March 2025
137AQI
137AQI
9th March 2025
147AQI
147AQI
10th March 2025
145AQI
145AQI
11th March 2025
126AQI
126AQI
12th March 2025
165AQI
165AQI
13th March 2025
121AQI
121AQI
14th March 2025
98AQI
98AQI
15th March 2025
92AQI
92AQI
16th March 2025
84AQI
84AQI
17th March 2025
72AQI
72AQI
18th March 2025
77AQI
77AQI
19th March 2025
78AQI
78AQI
20th March 2025
76AQI
76AQI
21st March 2025
75AQI
75AQI
22nd March 2025
84AQI
84AQI
23rd March 2025
89AQI
89AQI
24th March 2025
113AQI
113AQI
25th March 2025
96AQI
96AQI
26th March 2025
125AQI
125AQI
27th March 2025
116AQI
116AQI
28th March 2025
101AQI
101AQI
29th March 2025
124AQI
124AQI
30th March 2025
119AQI
119AQI
31st March 2025
96AQI
96AQI
1st April 2025
99AQI
99AQI
2nd April 2025
106AQI
106AQI
3rd April 2025
88AQI
88AQI
4th April 2025
116AQI
116AQI
5th April 2025
109AQI
109AQI
6th April 2025
97AQI
97AQI
7th April 2025
100AQI
100AQI
8th April 2025
102AQI
102AQI
9th April 2025
110AQI
110AQI
10th April 2025
105AQI
105AQI
11th April 2025
98AQI
98AQI
12th April 2025
351AQI
351AQI
13th April 2025
95AQI
95AQI
14th April 2025
101AQI
101AQI
15th April 2025
74AQI
74AQI
16th April 2025
84AQI
84AQI
17th April 2025
97AQI
97AQI
18th April 2025
101AQI
101AQI
19th April 2025
114AQI
114AQI
20th April 2025
95AQI
95AQI
21st April 2025
97AQI
97AQI
22nd April 2025
115AQI
115AQI
23rd April 2025
102AQI
102AQI
24th April 2025
102AQI
102AQI
25th April 2025
80AQI
80AQI
26th April 2025
77AQI
77AQI
27th April 2025
75AQI
75AQI
28th April 2025
111AQI
111AQI
29th April 2025
85AQI
85AQI
30th April 2025
84AQI
84AQI
1st May 2025
79AQI
79AQI
2nd May 2025
80AQI
80AQI
3rd May 2025
82AQI
82AQI
4th May 2025
75AQI
75AQI
5th May 2025
85AQI
85AQI
6th May 2025
114AQI
114AQI
7th May 2025
122AQI
122AQI
8th May 2025
90AQI
90AQI
9th May 2025
77AQI
77AQI
10th May 2025
59AQI
59AQI
11th May 2025
73AQI
73AQI
12th May 2025
76AQI
76AQI
13th May 2025
81AQI
81AQI
14th May 2025
87AQI
87AQI
15th May 2025
113AQI
113AQI
16th May 2025
81AQI
81AQI
17th May 2025
123AQI
123AQI
18th May 2025
92AQI
92AQI
19th May 2025
109AQI
109AQI
20th May 2025
88AQI
88AQI
21st May 2025
74AQI
74AQI
22nd May 2025
83AQI
83AQI
23rd May 2025
111AQI
111AQI
24th May 2025
113AQI
113AQI
25th May 2025
107AQI
107AQI
26th May 2025
115AQI
115AQI
27th May 2025
118AQI
118AQI
28th May 2025
110AQI
110AQI
29th May 2025
95AQI
95AQI
30th May 2025
87AQI
87AQI
31st May 2025
94AQI
94AQI
1st June 2025
59AQI
59AQI
2nd June 2025
59AQI
59AQI
3rd June 2025
74AQI
74AQI
4th June 2025
88AQI
88AQI
5th June 2025
76AQI
76AQI
6th June 2025
75AQI
75AQI
7th June 2025
54AQI
54AQI
8th June 2025
58AQI
58AQI
9th June 2025
66AQI
66AQI
10th June 2025
69AQI
69AQI
11th June 2025
82AQI
82AQI
12th June 2025
83AQI
83AQI
13th June 2025
84AQI
84AQI
14th June 2025
69AQI
69AQI
15th June 2025
50AQI
50AQI
16th June 2025
60AQI
60AQI
17th June 2025
62AQI
62AQI
18th June 2025
50AQI
50AQI
19th June 2025
45AQI
45AQI
20th June 2025
48AQI
48AQI
21st June 2025
42AQI
42AQI
22nd June 2025
34AQI
34AQI
23rd June 2025
50AQI
50AQI
24th June 2025
57AQI
57AQI
25th June 2025
57AQI
57AQI
26th June 2025
58AQI
58AQI
27th June 2025
51AQI
51AQI
28th June 2025
47AQI
47AQI
29th June 2025
45AQI
45AQI
30th June 2025
53AQI
53AQI
1st July 2025
49AQI
49AQI
2nd July 2025
51AQI
51AQI
3rd July 2025
57AQI
57AQI
4th July 2025
57AQI
57AQI
5th July 2025
60AQI
60AQI
6th July 2025
65AQI
65AQI
7th July 2025
67AQI
67AQI
8th July 2025
53AQI
53AQI
9th July 2025
52AQI
52AQI
10th July 2025
69AQI
69AQI
11th July 2025
67AQI
67AQI
12th July 2025
63AQI
63AQI
13th July 2025
62AQI
62AQI
14th July 2025
66AQI
66AQI
15th July 2025
65AQI
65AQI
16th July 2025
66AQI
66AQI
17th July 2025
61AQI
61AQI
18th July 2025
62AQI
62AQI
19th July 2025
64AQI
64AQI
20th July 2025
50AQI
50AQI
21st July 2025
47AQI
47AQI
22nd July 2025
43AQI
43AQI
23rd July 2025
47AQI
47AQI
24th July 2025
47AQI
47AQI
25th July 2025
56AQI
56AQI
26th July 2025
48AQI
48AQI
27th July 2025
50AQI
50AQI
28th July 2025
45AQI
45AQI
29th July 2025
54AQI
54AQI
30th July 2025
45AQI
45AQI
31st July 2025
53AQI
53AQI
1st August 2025
51AQI
51AQI
2nd August 2025
50AQI
50AQI
3rd August 2025
56AQI
56AQI
4th August 2025
58AQI
58AQI
131AQI
116AQI
106AQI
106AQI
93AQI
60AQI
56AQI
54AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202595AQI
5
17
9
6
19
3
14
16
1
16
13
1
20
11
9
21
10
21
1
3
20
106
76
13
1
Highest AQI recorded in
January131AQI
Lowest AQI recorded in
August54AQI
202492AQI
1
6
12
11
1
3
9
13
3
1
10
17
4
16
14
22
9
6
23
1
17
14
4
27
7
23
8
12
9
2
3
18
8
1
1
25
5
49
181
108
26
2
Highest AQI recorded in
January135AQI
Lowest AQI recorded in
July50AQI
202397AQI
8
15
8
1
10
13
4
1
7
19
4
17
12
1
1
19
10
1
2
27
1
11
20
1
30
5
21
4
2
12
14
3
1
11
13
1
2
9
13
5
2
27
191
114
26
3
Highest AQI recorded in
January128AQI
Lowest AQI recorded in
July56AQI
202292AQI
1
5
10
15
8
11
2
5
14
11
1
25
5
1
24
6
6
23
1
7
18
2
1
3
23
3
4
21
6
1
11
16
2
9
13
9
28
183
83
29
Highest AQI recorded in
January136AQI
Lowest AQI recorded in
July57AQI
202192AQI
6
15
9
1
1
13
10
4
13
15
3
20
8
2
1
22
8
3
22
5
15
16
6
23
2
4
26
5
16
10
1
16
10
3
9
14
8
36
202
97
29
1
Highest AQI recorded in
January133AQI
Lowest AQI recorded in
July51AQI
202090AQI
2
9
2
16
5
15
3
8
21
1
7
19
5
11
20
26
4
2
17
12
13
17
4
8
19
30
160
57
19
Highest AQI recorded in
December144AQI
Lowest AQI recorded in
August61AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
97AQILeast Polluted Year Recorded
2020(Avg.)
90AQIHefei's annual 2025 AQI (95) shows an average percentage change of 2.3% (worsened AQI) compared to previous years: 2020 (90), 2021 (92), 2022 (92), 2023 (97), 2024 (92).
