Heshan Environmental Protection Branch, Yiyang, Hunan, 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
Heshan Environmental Protection Branch, Yiyang, Hunan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
25th Aug 2023
108AQILowest AQI recorded on
26th Aug 2021
26AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 67 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Heshan Environmental Protection Branch, Yiyang, Hunan, China
AQI
Day
Night
.
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
11AM2nd Aug
80AQI
Avg. Lowest Time
7AM2nd Aug
59AQI
Night time
Avg. Highest Time
11PM2nd Aug
73AQI
Avg. Lowest Time
2AM3rd Aug
58AQI
In the last 24 hours,
Heshan Environmental Protection Branch's AQI reached its highest point of 80 at 11 AM during the Day, while the lowest point, 58, was recorded at 2 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Heshan Environmental Protection Branch, Yiyang, Hunan, China
JulAug
04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd
Day
Night
4th Jul 2025485 AMAQI
4th Jul 2025476 AMAQI
4th Jul 2025477 AMAQI
4th Jul 2025468 AMAQI
4th Jul 2025479 AMAQI
4th Jul 20255510 AMAQI
4th Jul 20254411 AMAQI
4th Jul 20254412 PMAQI
4th Jul 2025421 PMAQI
4th Jul 2025502 PMAQI
4th Jul 2025453 PMAQI
4th Jul 2025434 PMAQI
4th Jul 2025445 PMAQI
4th Jul 2025396 PMAQI
4th Jul 2025487 PMAQI
4th Jul 2025498 PMAQI
4th Jul 2025459 PMAQI
4th Jul 20255310 PMAQI
4th Jul 20255511 PMAQI
5th Jul 20255412 AMAQI
5th Jul 2025511 AMAQI
5th Jul 2025512 AMAQI
5th Jul 2025513 AMAQI
5th Jul 2025494 AMAQI
32°C26/38°C
5th Jul 2025485 AMAQI
5th Jul 2025496 AMAQI
5th Jul 2025497 AMAQI
5th Jul 2025658 AMAQI
5th Jul 2025589 AMAQI
5th Jul 20255410 AMAQI
5th Jul 20255811 AMAQI
5th Jul 20255312 PMAQI
5th Jul 2025571 PMAQI
5th Jul 2025572 PMAQI
5th Jul 2025493 PMAQI
5th Jul 2025504 PMAQI
5th Jul 2025525 PMAQI
5th Jul 2025536 PMAQI
5th Jul 2025567 PMAQI
5th Jul 2025548 PMAQI
5th Jul 2025589 PMAQI
5th Jul 20256010 PMAQI
5th Jul 20256211 PMAQI
6th Jul 20255412 AMAQI
6th Jul 2025541 AMAQI
6th Jul 2025522 AMAQI
6th Jul 2025523 AMAQI
6th Jul 2025524 AMAQI
32°C27/38°C
6th Jul 2025525 AMAQI
6th Jul 2025526 AMAQI
6th Jul 2025527 AMAQI
6th Jul 2025678 AMAQI
6th Jul 2025799 AMAQI
6th Jul 20256610 AMAQI
6th Jul 20256511 AMAQI
6th Jul 20256712 PMAQI
6th Jul 2025621 PMAQI
6th Jul 2025602 PMAQI
6th Jul 2025643 PMAQI
6th Jul 2025554 PMAQI
6th Jul 2025575 PMAQI
6th Jul 2025596 PMAQI
6th Jul 2025717 PMAQI
6th Jul 2025628 PMAQI
6th Jul 2025619 PMAQI
6th Jul 20256910 PMAQI
6th Jul 20257111 PMAQI
7th Jul 20257012 AMAQI
7th Jul 2025541 AMAQI
7th Jul 2025532 AMAQI
7th Jul 2025553 AMAQI
7th Jul 2025584 AMAQI
32°C27/38°C
7th Jul 2025565 AMAQI
7th Jul 2025576 AMAQI
7th Jul 2025577 AMAQI
7th Jul 2025858 AMAQI
7th Jul 2025889 AMAQI
7th Jul 20257610 AMAQI
7th Jul 20256111 AMAQI
7th Jul 20255212 PMAQI
7th Jul 2025541 PMAQI
7th Jul 2025572 PMAQI
7th Jul 2025583 PMAQI
7th Jul 2025694 PMAQI
7th Jul 2025665 PMAQI
7th Jul 2025566 PMAQI
7th Jul 2025677 PMAQI
7th Jul 2025708 PMAQI
7th Jul 2025709 PMAQI
7th Jul 20257110 PMAQI
7th Jul 20257211 PMAQI
8th Jul 20257012 AMAQI
8th Jul 2025591 AMAQI
8th Jul 2025572 AMAQI
8th Jul 2025593 AMAQI
8th Jul 2025614 AMAQI
32°C27/38°C
8th Jul 2025615 AMAQI
8th Jul 2025616 AMAQI
8th Jul 2025617 AMAQI
8th Jul 2025808 AMAQI
8th Jul 2025789 AMAQI
8th Jul 20257510 AMAQI
8th Jul 20258011 AMAQI
8th Jul 20258112 PMAQI
8th Jul 2025811 PMAQI
8th Jul 2025822 PMAQI
8th Jul 2025803 PMAQI
8th Jul 2025824 PMAQI
8th Jul 2025805 PMAQI
8th Jul 2025736 PMAQI
8th Jul 2025687 PMAQI
8th Jul 2025668 PMAQI
8th Jul 2025749 PMAQI
8th Jul 20257610 PMAQI
8th Jul 20257411 PMAQI
9th Jul 20255912 AMAQI
9th Jul 2025641 AMAQI
9th Jul 2025642 AMAQI
9th Jul 2025633 AMAQI
9th Jul 2025654 AMAQI
31°C27/38°C
9th Jul 2025655 AMAQI
9th Jul 2025656 AMAQI
9th Jul 2025657 AMAQI
9th Jul 2025788 AMAQI
9th Jul 2025829 AMAQI
9th Jul 20258010 AMAQI
9th Jul 20257811 AMAQI
9th Jul 20257412 PMAQI
9th Jul 2025731 PMAQI
9th Jul 2025782 PMAQI
9th Jul 2025713 PMAQI
9th Jul 2025454 PMAQI
9th Jul 2025375 PMAQI
9th Jul 2025396 PMAQI
9th Jul 2025497 PMAQI
9th Jul 2025568 PMAQI
9th Jul 2025579 PMAQI
9th Jul 20256010 PMAQI
9th Jul 20255611 PMAQI
10th Jul 20255712 AMAQI
10th Jul 2025641 AMAQI
10th Jul 2025642 AMAQI
10th Jul 2025643 AMAQI
10th Jul 2025664 AMAQI
30°C25/35°C
10th Jul 2025665 AMAQI
10th Jul 2025666 AMAQI
10th Jul 2025667 AMAQI
10th Jul 2025528 AMAQI
10th Jul 2025409 AMAQI
10th Jul 20254810 AMAQI
10th Jul 20255611 AMAQI
10th Jul 20254012 PMAQI
10th Jul 2025491 PMAQI
10th Jul 2025532 PMAQI
10th Jul 2025453 PMAQI
10th Jul 2025384 PMAQI
10th Jul 2025345 PMAQI
10th Jul 2025376 PMAQI
10th Jul 2025487 PMAQI
10th Jul 2025608 PMAQI
10th Jul 2025599 PMAQI
10th Jul 20255810 PMAQI
10th Jul 20255811 PMAQI
11th Jul 20255912 AMAQI
11th Jul 2025631 AMAQI
11th Jul 2025632 AMAQI
11th Jul 2025613 AMAQI
11th Jul 2025604 AMAQI
29°C25/36°C
11th Jul 2025605 AMAQI
11th Jul 2025606 AMAQI
11th Jul 2025607 AMAQI
11th Jul 2025638 AMAQI
11th Jul 2025729 AMAQI
11th Jul 20257810 AMAQI
11th Jul 20258711 AMAQI
11th Jul 20257812 PMAQI
11th Jul 2025711 PMAQI
11th Jul 2025732 PMAQI
11th Jul 2025683 PMAQI
11th Jul 2025674 PMAQI
11th Jul 2025705 PMAQI
11th Jul 2025706 PMAQI
11th Jul 2025587 PMAQI
11th Jul 2025628 PMAQI
11th Jul 2025669 PMAQI
11th Jul 20256810 PMAQI
11th Jul 20256811 PMAQI
12th Jul 20256912 AMAQI
12th Jul 2025631 AMAQI
12th Jul 2025602 AMAQI
12th Jul 2025613 AMAQI
12th Jul 2025634 AMAQI
29°C25/34°C
12th Jul 2025635 AMAQI
12th Jul 2025636 AMAQI
12th Jul 2025637 AMAQI
12th Jul 2025608 AMAQI
12th Jul 2025749 AMAQI
12th Jul 20257210 AMAQI
12th Jul 20256911 AMAQI
12th Jul 20257212 PMAQI
12th Jul 2025601 PMAQI
12th Jul 2025542 PMAQI
12th Jul 2025523 PMAQI
12th Jul 2025544 PMAQI
12th Jul 2025545 PMAQI
12th Jul 2025546 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025658 PMAQI
12th Jul 2025649 PMAQI
12th Jul 20256010 PMAQI
12th Jul 20256111 PMAQI
13th Jul 20255912 AMAQI
13th Jul 2025621 AMAQI
13th Jul 2025622 AMAQI
13th Jul 2025633 AMAQI
13th Jul 2025634 AMAQI
28°C24/33°C
13th Jul 2025635 AMAQI
13th Jul 2025636 AMAQI
13th Jul 2025637 AMAQI
13th Jul 2025668 AMAQI
13th Jul 2025729 AMAQI
13th Jul 20256710 AMAQI
13th Jul 20256511 AMAQI
13th Jul 20255912 PMAQI
13th Jul 2025541 PMAQI
13th Jul 2025482 PMAQI
13th Jul 2025463 PMAQI
13th Jul 2025504 PMAQI
13th Jul 2025535 PMAQI
13th Jul 2025566 PMAQI
13th Jul 2025567 PMAQI
13th Jul 2025608 PMAQI
13th Jul 2025589 PMAQI
13th Jul 20255710 PMAQI
13th Jul 20256111 PMAQI
14th Jul 20256212 AMAQI
14th Jul 2025621 AMAQI
14th Jul 2025622 AMAQI
14th Jul 2025623 AMAQI
14th Jul 2025614 AMAQI
28°C24/33°C
14th Jul 2025615 AMAQI
14th Jul 2025616 AMAQI
14th Jul 2025617 AMAQI
14th Jul 2025608 AMAQI
14th Jul 2025599 AMAQI
14th Jul 20255610 AMAQI
14th Jul 20255211 AMAQI
14th Jul 20255012 PMAQI
14th Jul 2025501 PMAQI
14th Jul 2025482 PMAQI
14th Jul 2025533 PMAQI
14th Jul 2025504 PMAQI
14th Jul 2025535 PMAQI
14th Jul 2025466 PMAQI
14th Jul 2025557 PMAQI
14th Jul 2025608 PMAQI
14th Jul 2025639 PMAQI
14th Jul 20256210 PMAQI
14th Jul 20255711 PMAQI
15th Jul 20256012 AMAQI
15th Jul 2025601 AMAQI
15th Jul 2025612 AMAQI
15th Jul 2025613 AMAQI
15th Jul 2025604 AMAQI
30°C25/36°C
15th Jul 2025605 AMAQI
15th Jul 2025616 AMAQI
15th Jul 2025617 AMAQI
15th Jul 2025688 AMAQI
15th Jul 2025729 AMAQI
15th Jul 20257410 AMAQI
15th Jul 20257911 AMAQI
15th Jul 20255412 PMAQI
15th Jul 2025441 PMAQI
15th Jul 2025542 PMAQI
15th Jul 2025533 PMAQI
15th Jul 2025544 PMAQI
15th Jul 2025565 PMAQI
15th Jul 2025526 PMAQI
15th Jul 2025547 PMAQI
15th Jul 2025628 PMAQI
15th Jul 2025649 PMAQI
15th Jul 20256410 PMAQI
15th Jul 20256511 PMAQI
16th Jul 20256312 AMAQI
16th Jul 2025601 AMAQI
16th Jul 2025602 AMAQI
16th Jul 2025613 AMAQI
16th Jul 2025624 AMAQI
32°C27/39°C
16th Jul 2025625 AMAQI
16th Jul 2025616 AMAQI
16th Jul 2025617 AMAQI
16th Jul 2025558 AMAQI
16th Jul 2025509 AMAQI
16th Jul 20255310 AMAQI
16th Jul 20254911 AMAQI
16th Jul 20254412 PMAQI
16th Jul 2025491 PMAQI
16th Jul 2025512 PMAQI
16th Jul 2025483 PMAQI
16th Jul 2025424 PMAQI
16th Jul 2025435 PMAQI
16th Jul 2025526 PMAQI
16th Jul 2025567 PMAQI
16th Jul 2025618 PMAQI
16th Jul 2025609 PMAQI
16th Jul 20256310 PMAQI
16th Jul 20256511 PMAQI
17th Jul 20256512 AMAQI
17th Jul 2025611 AMAQI
17th Jul 2025602 AMAQI
17th Jul 2025603 AMAQI
17th Jul 2025594 AMAQI
33°C28/40°C
17th Jul 2025585 AMAQI
17th Jul 2025586 AMAQI
17th Jul 2025597 AMAQI
17th Jul 2025608 AMAQI
17th Jul 2025619 AMAQI
17th Jul 20256110 AMAQI
17th Jul 20255611 AMAQI
17th Jul 20255412 PMAQI
17th Jul 2025631 PMAQI
17th Jul 2025592 PMAQI
17th Jul 2025593 PMAQI
17th Jul 2025594 PMAQI
17th Jul 2025625 PMAQI
17th Jul 2025596 PMAQI
17th Jul 2025677 PMAQI
17th Jul 2025678 PMAQI
17th Jul 2025679 PMAQI
17th Jul 20256810 PMAQI
17th Jul 20257011 PMAQI
18th Jul 20257412 AMAQI
18th Jul 2025631 AMAQI
18th Jul 2025602 AMAQI
18th Jul 2025613 AMAQI
18th Jul 2025604 AMAQI
31°C28/36°C
18th Jul 2025605 AMAQI
18th Jul 2025606 AMAQI
18th Jul 2025607 AMAQI
18th Jul 2025898 AMAQI
18th Jul 2025659 AMAQI
18th Jul 20257110 AMAQI
18th Jul 20256311 AMAQI
18th Jul 20255512 PMAQI
18th Jul 2025481 PMAQI
18th Jul 2025502 PMAQI
18th Jul 2025543 PMAQI
18th Jul 2025564 PMAQI
18th Jul 2025555 PMAQI
18th Jul 2025586 PMAQI
18th Jul 2025607 PMAQI
18th Jul 2025608 PMAQI
18th Jul 2025609 PMAQI
18th Jul 20256510 PMAQI
18th Jul 20256511 PMAQI
19th Jul 20256612 AMAQI
19th Jul 2025641 AMAQI
19th Jul 2025622 AMAQI
19th Jul 2025623 AMAQI
19th Jul 2025624 AMAQI
31°C27/37°C
19th Jul 2025625 AMAQI
19th Jul 2025636 AMAQI
19th Jul 2025627 AMAQI
19th Jul 2025688 AMAQI
19th Jul 2025749 AMAQI
19th Jul 20257410 AMAQI
19th Jul 20254911 AMAQI
19th Jul 20254712 PMAQI
19th Jul 2025481 PMAQI
19th Jul 2025562 PMAQI
19th Jul 2025463 PMAQI
19th Jul 2025494 PMAQI
19th Jul 2025465 PMAQI
19th Jul 2025496 PMAQI
19th Jul 2025577 PMAQI
19th Jul 2025668 PMAQI
19th Jul 2025709 PMAQI
19th Jul 20256910 PMAQI
19th Jul 20256811 PMAQI
20th Jul 20256612 AMAQI
20th Jul 2025631 AMAQI
20th Jul 2025632 AMAQI
20th Jul 2025633 AMAQI
20th Jul 2025624 AMAQI
30°C26/36°C
20th Jul 2025625 AMAQI
20th Jul 2025626 AMAQI
20th Jul 2025627 AMAQI
20th Jul 2025668 AMAQI
20th Jul 2025689 AMAQI
20th Jul 20256410 AMAQI
20th Jul 20256711 AMAQI
20th Jul 20256712 PMAQI
20th Jul 2025661 PMAQI
20th Jul 2025582 PMAQI
20th Jul 2025503 PMAQI
20th Jul 2025504 PMAQI
20th Jul 2025565 PMAQI
20th Jul 2025646 PMAQI
20th Jul 2025567 PMAQI
20th Jul 2025588 PMAQI
20th Jul 2025579 PMAQI
20th Jul 20255510 PMAQI
20th Jul 20255811 PMAQI
21st Jul 20255812 AMAQI
21st Jul 2025621 AMAQI
21st Jul 2025632 AMAQI
21st Jul 2025633 AMAQI
21st Jul 2025634 AMAQI
27°C24/32°C
21st Jul 2025625 AMAQI
21st Jul 2025636 AMAQI
21st Jul 2025637 AMAQI
21st Jul 2025518 AMAQI
21st Jul 2025519 AMAQI
21st Jul 20254510 AMAQI
21st Jul 20252511 AMAQI
21st Jul 20253912 PMAQI
21st Jul 2025421 PMAQI
21st Jul 2025342 PMAQI
21st Jul 2025313 PMAQI
21st Jul 2025344 PMAQI
21st Jul 2025285 PMAQI
21st Jul 2025366 PMAQI
21st Jul 2025447 PMAQI
21st Jul 2025548 PMAQI
21st Jul 2025559 PMAQI
21st Jul 20255810 PMAQI
21st Jul 20255611 PMAQI
22nd Jul 20255512 AMAQI
22nd Jul 2025611 AMAQI
22nd Jul 2025622 AMAQI
22nd Jul 2025603 AMAQI
22nd Jul 2025594 AMAQI
27°C25/31°C
22nd Jul 2025585 AMAQI
22nd Jul 2025596 AMAQI
22nd Jul 2025597 AMAQI
22nd Jul 2025328 AMAQI
22nd Jul 2025259 AMAQI
22nd Jul 20252810 AMAQI
22nd Jul 20252711 AMAQI
22nd Jul 20252512 PMAQI
22nd Jul 2025301 PMAQI
22nd Jul 2025322 PMAQI
22nd Jul 2025303 PMAQI
22nd Jul 2025264 PMAQI
22nd Jul 2025315 PMAQI
22nd Jul 2025306 PMAQI
22nd Jul 2025447 PMAQI
22nd Jul 2025548 PMAQI
22nd Jul 2025549 PMAQI
22nd Jul 20255310 PMAQI
22nd Jul 20255311 PMAQI
23rd Jul 20255312 AMAQI
23rd Jul 2025581 AMAQI
23rd Jul 2025592 AMAQI
23rd Jul 2025573 AMAQI
23rd Jul 2025544 AMAQI
27°C25/30°C
23rd Jul 2025545 AMAQI
23rd Jul 2025546 AMAQI
23rd Jul 2025547 AMAQI
23rd Jul 2025328 AMAQI
23rd Jul 2025339 AMAQI
23rd Jul 20253610 AMAQI
23rd Jul 20253311 AMAQI
23rd Jul 20252812 PMAQI
23rd Jul 2025331 PMAQI
23rd Jul 2025302 PMAQI
23rd Jul 2025353 PMAQI
23rd Jul 2025284 PMAQI
23rd Jul 2025275 PMAQI
23rd Jul 2025336 PMAQI
23rd Jul 2025417 PMAQI
23rd Jul 2025518 PMAQI
23rd Jul 2025539 PMAQI
23rd Jul 20255310 PMAQI
23rd Jul 20254811 PMAQI
24th Jul 20254812 AMAQI
24th Jul 2025431 AMAQI
24th Jul 2025512 AMAQI
24th Jul 2025543 AMAQI
24th Jul 2025534 AMAQI
27°C25/31°C
24th Jul 2025535 AMAQI
24th Jul 2025526 AMAQI
24th Jul 2025537 AMAQI
24th Jul 2025508 AMAQI
24th Jul 2025519 AMAQI
24th Jul 20255010 AMAQI
24th Jul 20252811 AMAQI
24th Jul 20253412 PMAQI
24th Jul 2025341 PMAQI
24th Jul 2025382 PMAQI
24th Jul 2025283 PMAQI
24th Jul 2025254 PMAQI
24th Jul 2025425 PMAQI
24th Jul 2025406 PMAQI
24th Jul 2025407 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025509 PMAQI
24th Jul 20255210 PMAQI
24th Jul 20255411 PMAQI
25th Jul 20254712 AMAQI
25th Jul 2025521 AMAQI
25th Jul 2025522 AMAQI
25th Jul 2025523 AMAQI
25th Jul 2025524 AMAQI
28°C24/34°C
25th Jul 2025525 AMAQI
25th Jul 2025516 AMAQI
25th Jul 2025517 AMAQI
25th Jul 2025388 AMAQI
25th Jul 2025329 AMAQI
25th Jul 20255010 AMAQI
25th Jul 20255211 AMAQI
25th Jul 20254812 PMAQI
25th Jul 2025511 PMAQI
25th Jul 2025482 PMAQI
25th Jul 2025413 PMAQI
25th Jul 2025374 PMAQI
25th Jul 2025375 PMAQI
25th Jul 2025386 PMAQI
25th Jul 2025447 PMAQI
25th Jul 2025568 PMAQI
25th Jul 2025599 PMAQI
25th Jul 20255910 PMAQI
25th Jul 20255811 PMAQI
26th Jul 20255912 AMAQI
26th Jul 2025511 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025513 AMAQI
26th Jul 2025514 AMAQI
30°C25/34°C
26th Jul 2025515 AMAQI
26th Jul 2025526 AMAQI
26th Jul 2025517 AMAQI
26th Jul 2025658 AMAQI
26th Jul 2025669 AMAQI
26th Jul 20256410 AMAQI
26th Jul 20256511 AMAQI
26th Jul 20257312 PMAQI
26th Jul 2025731 PMAQI
26th Jul 2025562 PMAQI
26th Jul 2025493 PMAQI
26th Jul 2025424 PMAQI
26th Jul 2025345 PMAQI
26th Jul 2025486 PMAQI
26th Jul 2025507 PMAQI
26th Jul 2025548 PMAQI
26th Jul 2025549 PMAQI
26th Jul 20255410 PMAQI
26th Jul 20255611 PMAQI
27th Jul 20255612 AMAQI
27th Jul 2025521 AMAQI
27th Jul 2025522 AMAQI
27th Jul 2025543 AMAQI
27th Jul 2025554 AMAQI
30°C25/35°C
27th Jul 2025555 AMAQI
27th Jul 2025556 AMAQI
27th Jul 2025557 AMAQI
27th Jul 2025628 AMAQI
27th Jul 2025619 AMAQI
27th Jul 20255810 AMAQI
27th Jul 20256411 AMAQI
27th Jul 20256212 PMAQI
27th Jul 2025601 PMAQI
27th Jul 2025542 PMAQI
27th Jul 2025443 PMAQI
27th Jul 2025414 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025526 PMAQI
27th Jul 2025527 PMAQI
27th Jul 2025578 PMAQI
27th Jul 2025489 PMAQI
27th Jul 20254910 PMAQI
27th Jul 20255411 PMAQI
28th Jul 20255612 AMAQI
28th Jul 2025541 AMAQI
28th Jul 2025542 AMAQI
28th Jul 2025543 AMAQI
28th Jul 2025554 AMAQI
29°C25/32°C
28th Jul 2025555 AMAQI
28th Jul 2025556 AMAQI
28th Jul 2025557 AMAQI
28th Jul 2025568 AMAQI
28th Jul 2025609 AMAQI
28th Jul 20256210 AMAQI
28th Jul 20256111 AMAQI
28th Jul 20255912 PMAQI
28th Jul 2025421 PMAQI
28th Jul 2025362 PMAQI
28th Jul 2025373 PMAQI
28th Jul 2025524 PMAQI
28th Jul 2025605 PMAQI
28th Jul 2025526 PMAQI
28th Jul 2025477 PMAQI
28th Jul 2025528 PMAQI
28th Jul 2025569 PMAQI
28th Jul 20255810 PMAQI
28th Jul 20255811 PMAQI
29th Jul 20256012 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025542 AMAQI
29th Jul 2025543 AMAQI
29th Jul 2025554 AMAQI
28°C25/33°C
29th Jul 2025555 AMAQI
29th Jul 2025546 AMAQI
29th Jul 2025547 AMAQI
29th Jul 2025608 AMAQI
29th Jul 2025629 AMAQI
29th Jul 20256210 AMAQI
29th Jul 20256211 AMAQI
29th Jul 20256012 PMAQI
29th Jul 2025581 PMAQI
29th Jul 2025572 PMAQI
29th Jul 2025523 PMAQI
29th Jul 2025434 PMAQI
29th Jul 2025475 PMAQI
29th Jul 2025396 PMAQI
29th Jul 2025427 PMAQI
29th Jul 2025548 PMAQI
29th Jul 2025579 PMAQI
29th Jul 20256010 PMAQI
29th Jul 20256111 PMAQI
30th Jul 20256012 AMAQI
30th Jul 2025551 AMAQI
30th Jul 2025552 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025564 AMAQI
29°C25/34°C
30th Jul 2025555 AMAQI
30th Jul 2025566 AMAQI
30th Jul 2025567 AMAQI
30th Jul 2025628 AMAQI
30th Jul 2025589 AMAQI
30th Jul 20256610 AMAQI
30th Jul 20257011 AMAQI
30th Jul 20255012 PMAQI
30th Jul 2025591 PMAQI
30th Jul 2025532 PMAQI
30th Jul 2025383 PMAQI
30th Jul 2025504 PMAQI
30th Jul 2025505 PMAQI
30th Jul 2025406 PMAQI
30th Jul 2025507 PMAQI
30th Jul 2025568 PMAQI
30th Jul 2025589 PMAQI
30th Jul 20255510 PMAQI
30th Jul 20255811 PMAQI
31st Jul 20255412 AMAQI
31st Jul 2025561 AMAQI
31st Jul 2025562 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025564 AMAQI
28°C26/32°C
31st Jul 2025565 AMAQI
31st Jul 2025566 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025568 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20255910 AMAQI
31st Jul 20256211 AMAQI
31st Jul 20256312 PMAQI
31st Jul 2025621 PMAQI
31st Jul 2025512 PMAQI
31st Jul 2025503 PMAQI
31st Jul 2025464 PMAQI
31st Jul 2025445 PMAQI
31st Jul 2025506 PMAQI
31st Jul 2025567 PMAQI
31st Jul 2025578 PMAQI
31st Jul 2025579 PMAQI
31st Jul 20255810 PMAQI
31st Jul 20255811 PMAQI
1st Aug 20256312 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025583 AMAQI
1st Aug 2025584 AMAQI
29°C25/35°C
1st Aug 2025575 AMAQI
1st Aug 2025586 AMAQI
1st Aug 2025587 AMAQI
1st Aug 2025638 AMAQI
1st Aug 2025709 AMAQI
1st Aug 20257010 AMAQI
1st Aug 20256611 AMAQI
1st Aug 20256612 PMAQI
1st Aug 2025671 PMAQI
1st Aug 2025682 PMAQI
1st Aug 2025673 PMAQI
1st Aug 2025684 PMAQI
1st Aug 2025605 PMAQI
1st Aug 2025646 PMAQI
1st Aug 2025637 PMAQI
1st Aug 2025628 PMAQI
1st Aug 2025639 PMAQI
1st Aug 20256410 PMAQI
1st Aug 20256711 PMAQI
2nd Aug 20256412 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025572 AMAQI
2nd Aug 2025593 AMAQI
2nd Aug 2025604 AMAQI
30°C25/34°C
2nd Aug 2025595 AMAQI
2nd Aug 2025596 AMAQI
2nd Aug 2025597 AMAQI
2nd Aug 2025758 AMAQI
2nd Aug 2025789 AMAQI
2nd Aug 20257610 AMAQI
2nd Aug 20258011 AMAQI
2nd Aug 20257812 PMAQI
2nd Aug 2025781 PMAQI
2nd Aug 2025722 PMAQI
2nd Aug 2025763 PMAQI
2nd Aug 2025784 PMAQI
2nd Aug 2025705 PMAQI
2nd Aug 2025696 PMAQI
2nd Aug 2025677 PMAQI
2nd Aug 2025688 PMAQI
2nd Aug 2025699 PMAQI
2nd Aug 20257010 PMAQI
2nd Aug 20257311 PMAQI
3rd Aug 20256712 AMAQI
3rd Aug 2025591 AMAQI
3rd Aug 2025582 AMAQI
3rd Aug 2025623 AMAQI
3rd Aug 2025634 AMAQI
30°C26/36°C
3rd Aug 2025635 AMAQI
5 AM3rd Aug 2025636 AMAQI
3rd Aug 2025647 AMAQI
3rd Aug 2025648 AMAQI
3rd Aug 2025629 AMAQI
3rd Aug 20257210 AMAQI
3rd Aug 20257411 AMAQI
3rd Aug 20257212 PMAQI
12 PM3rd Aug 2025691 PMAQI
3rd Aug 2025652 PMAQI
3rd Aug 2025683 PMAQI
3rd Aug 2025654 PMAQI
3rd Aug 2025635 PMAQI
3rd Aug 2025646 PMAQI
3rd Aug 2025627 PMAQI
7 PM3rd Aug 2025608 PMAQI
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 11 AM
60AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
3 PM - 6 PM
51AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 11 AM (Avg. 60), while the lowest AQI was between 3 PM to 6 PM (Avg. 51).
Night time
Avg. Highest Time
12 AM - 11 PM
59AQI
9 hours / Day
270 hours / Month
Avg. Lowest Time
12 AM - 11 PM
59AQI
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. 59), while the lowest AQI was between 12 AM to 11 PM (Avg. 59).
2025 Days Vs Air Quality
Heshan Environmental Protection Branch, Yiyang, Hunan, China
2025
7%
16
38%
81
43%
92
10%
22
1%
3
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
16 DaysModerate
81 DaysPoor
92 DaysUnhealthy
22 DaysSevere
3 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 7%
Health Risk Level:
Extreme
In 2025, 7% of 215 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
Heshan Environmental Protection Branch, Yiyang, Hunan, 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
179AQI
179AQI
2nd January 2025
190AQI
190AQI
3rd January 2025
197AQI
197AQI
4th January 2025
228AQI
228AQI
5th January 2025
162AQI
162AQI
6th January 2025
175AQI
175AQI
7th January 2025
162AQI
162AQI
8th January 2025
139AQI
139AQI
9th January 2025
146AQI
146AQI
10th January 2025
131AQI
131AQI
11th January 2025
136AQI
136AQI
12th January 2025
138AQI
138AQI
13th January 2025
144AQI
144AQI
14th January 2025
162AQI
162AQI
15th January 2025
121AQI
121AQI
16th January 2025
134AQI
134AQI
17th January 2025
135AQI
135AQI
18th January 2025
155AQI
155AQI
19th January 2025
152AQI
152AQI
20th January 2025
165AQI
165AQI
21st January 2025
166AQI
166AQI
22nd January 2025
184AQI
184AQI
23rd January 2025
241AQI
241AQI
24th January 2025
178AQI
178AQI
25th January 2025
117AQI
117AQI
26th January 2025
109AQI
109AQI
27th January 2025
106AQI
106AQI
28th January 2025
142AQI
142AQI
29th January 2025
207AQI
207AQI
30th January 2025
164AQI
164AQI
31st January 2025
170AQI
170AQI
1st February 2025
138AQI
138AQI
2nd February 2025
141AQI
141AQI
3rd February 2025
146AQI
146AQI
4th February 2025
131AQI
131AQI
5th February 2025
142AQI
142AQI
6th February 2025
113AQI
113AQI
7th February 2025
112AQI
112AQI
8th February 2025
81AQI
81AQI
9th February 2025
91AQI
91AQI
10th February 2025
109AQI
109AQI
11th February 2025
129AQI
129AQI
12th February 2025
139AQI
139AQI
13th February 2025
153AQI
153AQI
14th February 2025
143AQI
143AQI
15th February 2025
156AQI
156AQI
16th February 2025
134AQI
134AQI
17th February 2025
109AQI
109AQI
18th February 2025
101AQI
101AQI
19th February 2025
117AQI
117AQI
20th February 2025
140AQI
140AQI
21st February 2025
152AQI
152AQI
22nd February 2025
103AQI
103AQI
23rd February 2025
159AQI
159AQI
24th February 2025
143AQI
143AQI
25th February 2025
152AQI
152AQI
26th February 2025
153AQI
153AQI
27th February 2025
119AQI
119AQI
28th February 2025
134AQI
134AQI
1st March 2025
103AQI
103AQI
2nd March 2025
92AQI
92AQI
3rd March 2025
75AQI
75AQI
4th March 2025
91AQI
91AQI
5th March 2025
94AQI
94AQI
6th March 2025
117AQI
117AQI
7th March 2025
118AQI
118AQI
8th March 2025
109AQI
109AQI
9th March 2025
126AQI
126AQI
10th March 2025
103AQI
103AQI
11th March 2025
110AQI
110AQI
12th March 2025
135AQI
135AQI
13th March 2025
129AQI
129AQI
14th March 2025
99AQI
99AQI
15th March 2025
89AQI
89AQI
16th March 2025
91AQI
91AQI
17th March 2025
80AQI
80AQI
18th March 2025
78AQI
78AQI
19th March 2025
79AQI
79AQI
20th March 2025
79AQI
79AQI
21st March 2025
80AQI
80AQI
22nd March 2025
96AQI
96AQI
23rd March 2025
107AQI
107AQI
24th March 2025
93AQI
93AQI
25th March 2025
116AQI
116AQI
26th March 2025
129AQI
129AQI
27th March 2025
141AQI
141AQI
28th March 2025
110AQI
110AQI
29th March 2025
117AQI
117AQI
30th March 2025
107AQI
107AQI
31st March 2025
111AQI
111AQI
1st April 2025
112AQI
112AQI
2nd April 2025
110AQI
110AQI
3rd April 2025
120AQI
120AQI
4th April 2025
130AQI
130AQI
5th April 2025
134AQI
134AQI
6th April 2025
126AQI
126AQI
7th April 2025
133AQI
133AQI
8th April 2025
130AQI
130AQI
9th April 2025
131AQI
131AQI
10th April 2025
132AQI
132AQI
11th April 2025
122AQI
122AQI
12th April 2025
181AQI
181AQI
13th April 2025
143AQI
143AQI
14th April 2025
147AQI
147AQI
15th April 2025
131AQI
131AQI
16th April 2025
124AQI
124AQI
17th April 2025
122AQI
122AQI
18th April 2025
116AQI
116AQI
19th April 2025
111AQI
111AQI
20th April 2025
137AQI
137AQI
21st April 2025
103AQI
103AQI
22nd April 2025
110AQI
110AQI
23rd April 2025
109AQI
109AQI
24th April 2025
102AQI
102AQI
25th April 2025
104AQI
104AQI
26th April 2025
98AQI
98AQI
27th April 2025
107AQI
107AQI
28th April 2025
117AQI
117AQI
29th April 2025
111AQI
111AQI
30th April 2025
94AQI
94AQI
1st May 2025
96AQI
96AQI
2nd May 2025
96AQI
96AQI
3rd May 2025
103AQI
103AQI
4th May 2025
111AQI
111AQI
5th May 2025
101AQI
101AQI
6th May 2025
111AQI
111AQI
7th May 2025
119AQI
119AQI
8th May 2025
95AQI
95AQI
9th May 2025
99AQI
99AQI
10th May 2025
96AQI
96AQI
11th May 2025
94AQI
94AQI
12th May 2025
95AQI
95AQI
13th May 2025
96AQI
96AQI
14th May 2025
117AQI
117AQI
15th May 2025
115AQI
115AQI
16th May 2025
96AQI
96AQI
17th May 2025
100AQI
100AQI
18th May 2025
122AQI
122AQI
19th May 2025
110AQI
110AQI
20th May 2025
87AQI
87AQI
21st May 2025
91AQI
91AQI
22nd May 2025
87AQI
87AQI
23rd May 2025
101AQI
101AQI
24th May 2025
114AQI
114AQI
25th May 2025
118AQI
118AQI
26th May 2025
111AQI
111AQI
27th May 2025
122AQI
122AQI
28th May 2025
96AQI
96AQI
29th May 2025
91AQI
91AQI
30th May 2025
85AQI
85AQI
31st May 2025
88AQI
88AQI
1st June 2025
80AQI
80AQI
2nd June 2025
92AQI
92AQI
3rd June 2025
95AQI
95AQI
4th June 2025
114AQI
114AQI
5th June 2025
91AQI
91AQI
6th June 2025
96AQI
96AQI
7th June 2025
84AQI
84AQI
8th June 2025
87AQI
87AQI
9th June 2025
85AQI
85AQI
10th June 2025
88AQI
88AQI
11th June 2025
90AQI
90AQI
12th June 2025
88AQI
88AQI
13th June 2025
86AQI
86AQI
14th June 2025
82AQI
82AQI
15th June 2025
82AQI
82AQI
16th June 2025
75AQI
75AQI
17th June 2025
75AQI
75AQI
18th June 2025
55AQI
55AQI
19th June 2025
51AQI
51AQI
20th June 2025
51AQI
51AQI
21st June 2025
46AQI
46AQI
22nd June 2025
36AQI
36AQI
23rd June 2025
40AQI
40AQI
24th June 2025
48AQI
48AQI
25th June 2025
54AQI
54AQI
26th June 2025
54AQI
54AQI
27th June 2025
53AQI
53AQI
28th June 2025
46AQI
46AQI
29th June 2025
46AQI
46AQI
30th June 2025
45AQI
45AQI
1st July 2025
42AQI
42AQI
2nd July 2025
38AQI
38AQI
3rd July 2025
43AQI
43AQI
4th July 2025
48AQI
48AQI
5th July 2025
54AQI
54AQI
6th July 2025
60AQI
60AQI
7th July 2025
63AQI
63AQI
8th July 2025
71AQI
71AQI
9th July 2025
62AQI
62AQI
10th July 2025
54AQI
54AQI
11th July 2025
66AQI
66AQI
12th July 2025
62AQI
62AQI
13th July 2025
60AQI
60AQI
14th July 2025
57AQI
57AQI
15th July 2025
60AQI
60AQI
16th July 2025
56AQI
56AQI
17th July 2025
62AQI
62AQI
18th July 2025
61AQI
61AQI
19th July 2025
60AQI
60AQI
20th July 2025
61AQI
61AQI
21st July 2025
50AQI
50AQI
22nd July 2025
45AQI
45AQI
23rd July 2025
45AQI
45AQI
24th July 2025
45AQI
45AQI
25th July 2025
49AQI
49AQI
26th July 2025
54AQI
54AQI
27th July 2025
53AQI
53AQI
28th July 2025
54AQI
54AQI
29th July 2025
54AQI
54AQI
30th July 2025
55AQI
55AQI
31st July 2025
55AQI
55AQI
1st August 2025
63AQI
63AQI
2nd August 2025
67AQI
67AQI
159AQI
130AQI
103AQI
122AQI
102AQI
71AQI
55AQI
65AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
2025105AQI
13
15
3
2
20
6
14
17
2
27
1
17
14
7
22
1
9
22
2
16
81
92
22
3
Highest AQI recorded in
January159AQI
Lowest AQI recorded in
July55AQI
2024105AQI
3
11
17
2
6
12
8
1
9
13
9
15
15
2
19
10
17
12
1
20
11
4
27
12
16
2
9
16
6
2
7
6
15
14
17
47
130
114
74
1
Highest AQI recorded in
December152AQI
Lowest AQI recorded in
July48AQI
202398AQI
2
7
15
7
2
15
11
1
15
11
4
5
20
5
8
17
6
9
21
24
7
7
20
4
2
24
4
1
12
16
2
1
3
18
4
1
8
14
5
3
59
151
100
41
10
Highest AQI recorded in
January173AQI
Lowest AQI recorded in
July46AQI
2022102AQI
3
5
19
4
2
12
7
2
18
8
3
2
11
4
4
17
9
1
20
10
20
1
1
1
19
10
7
5
16
3
2
8
15
5
2
12
17
58
97
91
55
4
Highest AQI recorded in
January169AQI
Lowest AQI recorded in
July37AQI
202188AQI
1
12
16
2
6
14
7
1
2
12
17
2
18
10
14
11
6
17
13
31
20
1
19
10
1
11
12
5
2
5
9
10
6
5
17
7
2
121
98
92
38
5
Highest AQI recorded in
January159AQI
Lowest AQI recorded in
July34AQI
202092AQI
1
6
3
3
11
6
4
1
9
8
18
12
19
7
4
1
22
6
3
9
17
4
4
8
14
5
10
11
9
1
5
22
3
74
87
58
44
3
Highest AQI recorded in
December171AQI
Lowest AQI recorded in
August49AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
105AQILeast Polluted Year Recorded
2021(Avg.)
88AQIHeshan Environmental Protection Branch's annual 2025 AQI (105) shows an average percentage change of 8.6% (worsened AQI) compared to previous years: 2020 (92), 2021 (88), 2022 (102), 2023 (98), 2024 (105).
