High Tech Zone Epa, Changsha, 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
High Tech Zone Epa, Changsha, Hunan, China
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
19th Aug 2023
102AQILowest AQI recorded on
1st Aug 2024
33AQISame Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 66 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
High Tech Zone Epa, Changsha, Hunan, China
AQI
Day
Night
.
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
Day time
Avg. Highest Time
2PM2nd Aug
83AQI
Avg. Lowest Time
6AM2nd Aug
60AQI
Night time
Avg. Highest Time
10PM2nd Aug
72AQI
Avg. Lowest Time
2AM3rd Aug
58AQI
In the last 24 hours,
High Tech Zone Epa's AQI reached its highest point of 83 at 2 PM 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
High Tech Zone Epa, Changsha, 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 2025505 AMAQI
4th Jul 2025516 AMAQI
4th Jul 2025497 AMAQI
4th Jul 2025448 AMAQI
4th Jul 2025529 AMAQI
4th Jul 20255210 AMAQI
4th Jul 20255211 AMAQI
4th Jul 20255412 PMAQI
4th Jul 2025521 PMAQI
4th Jul 2025542 PMAQI
4th Jul 2025543 PMAQI
4th Jul 2025584 PMAQI
4th Jul 2025595 PMAQI
4th Jul 2025596 PMAQI
4th Jul 2025597 PMAQI
4th Jul 2025548 PMAQI
4th Jul 2025549 PMAQI
4th Jul 20255410 PMAQI
4th Jul 20255411 PMAQI
5th Jul 20255412 AMAQI
5th Jul 2025501 AMAQI
5th Jul 2025512 AMAQI
5th Jul 2025503 AMAQI
5th Jul 2025524 AMAQI
32°C27/38°C
5th Jul 2025515 AMAQI
5th Jul 2025516 AMAQI
5th Jul 2025527 AMAQI
5th Jul 2025668 AMAQI
5th Jul 2025719 AMAQI
5th Jul 20257610 AMAQI
5th Jul 20257511 AMAQI
5th Jul 20257312 PMAQI
5th Jul 2025711 PMAQI
5th Jul 2025692 PMAQI
5th Jul 2025703 PMAQI
5th Jul 2025714 PMAQI
5th Jul 2025745 PMAQI
5th Jul 2025716 PMAQI
5th Jul 2025657 PMAQI
5th Jul 2025578 PMAQI
5th Jul 2025589 PMAQI
5th Jul 20255710 PMAQI
5th Jul 20255811 PMAQI
6th Jul 20256012 AMAQI
6th Jul 2025521 AMAQI
6th Jul 2025532 AMAQI
6th Jul 2025543 AMAQI
6th Jul 2025554 AMAQI
33°C28/38°C
6th Jul 2025555 AMAQI
6th Jul 2025556 AMAQI
6th Jul 2025557 AMAQI
6th Jul 2025608 AMAQI
6th Jul 2025659 AMAQI
6th Jul 20256710 AMAQI
6th Jul 20257111 AMAQI
6th Jul 20256912 PMAQI
6th Jul 2025701 PMAQI
6th Jul 2025722 PMAQI
6th Jul 2025703 PMAQI
6th Jul 2025694 PMAQI
6th Jul 2025725 PMAQI
6th Jul 2025726 PMAQI
6th Jul 2025717 PMAQI
6th Jul 2025618 PMAQI
6th Jul 2025629 PMAQI
6th Jul 20256410 PMAQI
6th Jul 20256311 PMAQI
7th Jul 20256312 AMAQI
7th Jul 2025571 AMAQI
7th Jul 2025572 AMAQI
7th Jul 2025583 AMAQI
7th Jul 2025604 AMAQI
32°C27/38°C
7th Jul 2025605 AMAQI
7th Jul 2025606 AMAQI
7th Jul 2025607 AMAQI
7th Jul 2025738 AMAQI
7th Jul 2025779 AMAQI
7th Jul 20258210 AMAQI
7th Jul 20259011 AMAQI
7th Jul 20258312 PMAQI
7th Jul 2025821 PMAQI
7th Jul 2025782 PMAQI
7th Jul 2025753 PMAQI
7th Jul 2025754 PMAQI
7th Jul 2025755 PMAQI
7th Jul 2025766 PMAQI
7th Jul 2025697 PMAQI
7th Jul 2025668 PMAQI
7th Jul 2025689 PMAQI
7th Jul 20256610 PMAQI
7th Jul 20256711 PMAQI
8th Jul 20256612 AMAQI
8th Jul 2025611 AMAQI
8th Jul 2025602 AMAQI
8th Jul 2025623 AMAQI
8th Jul 2025644 AMAQI
32°C26/38°C
8th Jul 2025635 AMAQI
8th Jul 2025646 AMAQI
8th Jul 2025647 AMAQI
8th Jul 2025828 AMAQI
8th Jul 2025909 AMAQI
8th Jul 202510410 AMAQI
8th Jul 202510211 AMAQI
8th Jul 20258812 PMAQI
8th Jul 2025851 PMAQI
8th Jul 2025852 PMAQI
8th Jul 2025843 PMAQI
8th Jul 2025824 PMAQI
8th Jul 2025845 PMAQI
8th Jul 2025706 PMAQI
8th Jul 2025647 PMAQI
8th Jul 2025648 PMAQI
8th Jul 2025659 PMAQI
8th Jul 20256610 PMAQI
8th Jul 20256411 PMAQI
9th Jul 20256412 AMAQI
9th Jul 2025631 AMAQI
9th Jul 2025622 AMAQI
9th Jul 2025643 AMAQI
9th Jul 2025664 AMAQI
32°C28/39°C
9th Jul 2025655 AMAQI
9th Jul 2025656 AMAQI
9th Jul 2025657 AMAQI
9th Jul 2025688 AMAQI
9th Jul 2025729 AMAQI
9th Jul 20257310 AMAQI
9th Jul 20259511 AMAQI
9th Jul 20258712 PMAQI
9th Jul 2025821 PMAQI
9th Jul 2025772 PMAQI
9th Jul 2025723 PMAQI
9th Jul 2025704 PMAQI
9th Jul 2025645 PMAQI
9th Jul 2025546 PMAQI
9th Jul 2025567 PMAQI
9th Jul 2025628 PMAQI
9th Jul 2025639 PMAQI
9th Jul 20256210 PMAQI
9th Jul 20256211 PMAQI
10th Jul 20256312 AMAQI
10th Jul 2025641 AMAQI
10th Jul 2025642 AMAQI
10th Jul 2025653 AMAQI
10th Jul 2025664 AMAQI
30°C26/37°C
10th Jul 2025665 AMAQI
10th Jul 2025666 AMAQI
10th Jul 2025667 AMAQI
10th Jul 2025468 AMAQI
10th Jul 2025319 AMAQI
10th Jul 20254210 AMAQI
10th Jul 20254711 AMAQI
10th Jul 20255212 PMAQI
10th Jul 2025541 PMAQI
10th Jul 2025522 PMAQI
10th Jul 2025523 PMAQI
10th Jul 2025484 PMAQI
10th Jul 2025545 PMAQI
10th Jul 2025526 PMAQI
10th Jul 2025567 PMAQI
10th Jul 2025608 PMAQI
10th Jul 2025629 PMAQI
10th Jul 20256010 PMAQI
10th Jul 20255911 PMAQI
11th Jul 20256112 AMAQI
11th Jul 2025631 AMAQI
11th Jul 2025632 AMAQI
11th Jul 2025633 AMAQI
11th Jul 2025624 AMAQI
30°C26/36°C
11th Jul 2025615 AMAQI
11th Jul 2025626 AMAQI
11th Jul 2025627 AMAQI
11th Jul 2025618 AMAQI
11th Jul 2025659 AMAQI
11th Jul 20256510 AMAQI
11th Jul 20256411 AMAQI
11th Jul 20256612 PMAQI
11th Jul 2025691 PMAQI
11th Jul 2025692 PMAQI
11th Jul 2025683 PMAQI
11th Jul 2025694 PMAQI
11th Jul 2025725 PMAQI
11th Jul 2025656 PMAQI
11th Jul 2025577 PMAQI
11th Jul 2025618 PMAQI
11th Jul 2025629 PMAQI
11th Jul 20256210 PMAQI
11th Jul 20256211 PMAQI
12th Jul 20256412 AMAQI
12th Jul 2025621 AMAQI
12th Jul 2025612 AMAQI
12th Jul 2025613 AMAQI
12th Jul 2025624 AMAQI
30°C25/35°C
12th Jul 2025625 AMAQI
12th Jul 2025626 AMAQI
12th Jul 2025627 AMAQI
12th Jul 2025568 AMAQI
12th Jul 2025569 AMAQI
12th Jul 20255810 AMAQI
12th Jul 20256011 AMAQI
12th Jul 20256112 PMAQI
12th Jul 2025641 PMAQI
12th Jul 2025632 PMAQI
12th Jul 2025623 PMAQI
12th Jul 2025634 PMAQI
12th Jul 2025625 PMAQI
12th Jul 2025626 PMAQI
12th Jul 2025587 PMAQI
12th Jul 2025618 PMAQI
12th Jul 2025619 PMAQI
12th Jul 20256010 PMAQI
12th Jul 20256111 PMAQI
13th Jul 20256112 AMAQI
13th Jul 2025621 AMAQI
13th Jul 2025622 AMAQI
13th Jul 2025623 AMAQI
13th Jul 2025624 AMAQI
28°C25/32°C
13th Jul 2025625 AMAQI
13th Jul 2025626 AMAQI
13th Jul 2025627 AMAQI
13th Jul 2025618 AMAQI
13th Jul 2025619 AMAQI
13th Jul 20255710 AMAQI
13th Jul 20255811 AMAQI
13th Jul 20256112 PMAQI
13th Jul 2025581 PMAQI
13th Jul 2025602 PMAQI
13th Jul 2025583 PMAQI
13th Jul 2025584 PMAQI
13th Jul 2025565 PMAQI
13th Jul 2025546 PMAQI
13th Jul 2025587 PMAQI
13th Jul 2025618 PMAQI
13th Jul 2025609 PMAQI
13th Jul 20256010 PMAQI
13th Jul 20256111 PMAQI
14th Jul 20256012 AMAQI
14th Jul 2025611 AMAQI
14th Jul 2025612 AMAQI
14th Jul 2025613 AMAQI
14th Jul 2025614 AMAQI
29°C25/33°C
14th Jul 2025615 AMAQI
14th Jul 2025616 AMAQI
14th Jul 2025617 AMAQI
14th Jul 2025588 AMAQI
14th Jul 2025549 AMAQI
14th Jul 20255710 AMAQI
14th Jul 20256211 AMAQI
14th Jul 20255912 PMAQI
14th Jul 2025591 PMAQI
14th Jul 2025582 PMAQI
14th Jul 2025603 PMAQI
14th Jul 2025624 PMAQI
14th Jul 2025645 PMAQI
14th Jul 2025646 PMAQI
14th Jul 2025637 PMAQI
14th Jul 2025628 PMAQI
14th Jul 2025629 PMAQI
14th Jul 20256210 PMAQI
14th Jul 20256211 PMAQI
15th Jul 20256212 AMAQI
15th Jul 2025611 AMAQI
15th Jul 2025602 AMAQI
15th Jul 2025603 AMAQI
15th Jul 2025604 AMAQI
30°C26/36°C
15th Jul 2025605 AMAQI
15th Jul 2025606 AMAQI
15th Jul 2025607 AMAQI
15th Jul 2025668 AMAQI
15th Jul 2025639 AMAQI
15th Jul 20256110 AMAQI
15th Jul 20256111 AMAQI
15th Jul 20256112 PMAQI
15th Jul 2025611 PMAQI
15th Jul 2025582 PMAQI
15th Jul 2025583 PMAQI
15th Jul 2025584 PMAQI
15th Jul 2025605 PMAQI
15th Jul 2025586 PMAQI
15th Jul 2025587 PMAQI
15th Jul 2025618 PMAQI
15th Jul 2025629 PMAQI
15th Jul 20256110 PMAQI
15th Jul 20256011 PMAQI
16th Jul 20256112 AMAQI
16th Jul 2025601 AMAQI
16th Jul 2025602 AMAQI
16th Jul 2025613 AMAQI
16th Jul 2025604 AMAQI
32°C27/37°C
16th Jul 2025605 AMAQI
16th Jul 2025606 AMAQI
16th Jul 2025607 AMAQI
16th Jul 2025488 AMAQI
16th Jul 2025509 AMAQI
16th Jul 20255210 AMAQI
16th Jul 20255411 AMAQI
16th Jul 20255512 PMAQI
16th Jul 2025571 PMAQI
16th Jul 2025572 PMAQI
16th Jul 2025573 PMAQI
16th Jul 2025574 PMAQI
16th Jul 2025615 PMAQI
16th Jul 2025626 PMAQI
16th Jul 2025627 PMAQI
16th Jul 2025618 PMAQI
16th Jul 2025629 PMAQI
16th Jul 20256110 PMAQI
16th Jul 20256211 PMAQI
17th Jul 20256112 AMAQI
17th Jul 2025611 AMAQI
17th Jul 2025612 AMAQI
17th Jul 2025603 AMAQI
17th Jul 2025604 AMAQI
33°C28/38°C
17th Jul 2025595 AMAQI
17th Jul 2025606 AMAQI
17th Jul 2025607 AMAQI
17th Jul 2025568 AMAQI
17th Jul 2025549 AMAQI
17th Jul 20255210 AMAQI
17th Jul 20255811 AMAQI
17th Jul 20255912 PMAQI
17th Jul 2025581 PMAQI
17th Jul 2025612 PMAQI
17th Jul 2025603 PMAQI
17th Jul 2025614 PMAQI
17th Jul 2025625 PMAQI
17th Jul 2025646 PMAQI
17th Jul 2025667 PMAQI
17th Jul 2025648 PMAQI
17th Jul 2025639 PMAQI
17th Jul 20256510 PMAQI
17th Jul 20256411 PMAQI
18th Jul 20256212 AMAQI
18th Jul 2025601 AMAQI
18th Jul 2025602 AMAQI
18th Jul 2025603 AMAQI
18th Jul 2025604 AMAQI
32°C29/35°C
18th Jul 2025605 AMAQI
18th Jul 2025606 AMAQI
18th Jul 2025607 AMAQI
18th Jul 2025958 AMAQI
18th Jul 20251049 AMAQI
18th Jul 20258410 AMAQI
18th Jul 20256111 AMAQI
18th Jul 20255312 PMAQI
18th Jul 2025461 PMAQI
18th Jul 2025542 PMAQI
18th Jul 2025623 PMAQI
18th Jul 2025644 PMAQI
18th Jul 2025715 PMAQI
18th Jul 2025646 PMAQI
18th Jul 2025637 PMAQI
18th Jul 2025618 PMAQI
18th Jul 2025639 PMAQI
18th Jul 20256310 PMAQI
18th Jul 20256211 PMAQI
19th Jul 20256012 AMAQI
19th Jul 2025611 AMAQI
19th Jul 2025622 AMAQI
19th Jul 2025623 AMAQI
19th Jul 2025634 AMAQI
32°C28/38°C
19th Jul 2025635 AMAQI
19th Jul 2025636 AMAQI
19th Jul 2025637 AMAQI
19th Jul 2025708 AMAQI
19th Jul 2025669 AMAQI
19th Jul 20256110 AMAQI
19th Jul 20255711 AMAQI
19th Jul 20256412 PMAQI
19th Jul 2025641 PMAQI
19th Jul 2025652 PMAQI
19th Jul 2025643 PMAQI
19th Jul 2025624 PMAQI
19th Jul 2025625 PMAQI
19th Jul 2025626 PMAQI
19th Jul 2025667 PMAQI
19th Jul 2025658 PMAQI
19th Jul 2025659 PMAQI
19th Jul 20256610 PMAQI
19th Jul 20256611 PMAQI
20th Jul 20256812 AMAQI
20th Jul 2025621 AMAQI
20th Jul 2025622 AMAQI
20th Jul 2025623 AMAQI
20th Jul 2025624 AMAQI
31°C27/37°C
20th Jul 2025625 AMAQI
20th Jul 2025626 AMAQI
20th Jul 2025627 AMAQI
20th Jul 2025688 AMAQI
20th Jul 2025689 AMAQI
20th Jul 20256610 AMAQI
20th Jul 20255911 AMAQI
20th Jul 20255612 PMAQI
20th Jul 2025561 PMAQI
20th Jul 2025562 PMAQI
20th Jul 2025533 PMAQI
20th Jul 2025344 PMAQI
20th Jul 2025275 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025377 PMAQI
20th Jul 2025528 PMAQI
20th Jul 2025529 PMAQI
20th Jul 20255310 PMAQI
20th Jul 20255211 PMAQI
21st Jul 20255312 AMAQI
21st Jul 2025621 AMAQI
21st Jul 2025632 AMAQI
21st Jul 2025633 AMAQI
21st Jul 2025634 AMAQI
28°C25/33°C
21st Jul 2025625 AMAQI
21st Jul 2025636 AMAQI
21st Jul 2025627 AMAQI
21st Jul 2025368 AMAQI
21st Jul 2025219 AMAQI
21st Jul 20252410 AMAQI
21st Jul 20252211 AMAQI
21st Jul 20252512 PMAQI
21st Jul 2025241 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025193 PMAQI
21st Jul 2025204 PMAQI
21st Jul 2025175 PMAQI
21st Jul 2025196 PMAQI
21st Jul 2025317 PMAQI
21st Jul 2025518 PMAQI
21st Jul 2025509 PMAQI
21st Jul 20255010 PMAQI
21st Jul 20255111 PMAQI
22nd Jul 20255112 AMAQI
22nd Jul 2025611 AMAQI
22nd Jul 2025622 AMAQI
22nd Jul 2025603 AMAQI
22nd Jul 2025564 AMAQI
28°C26/33°C
22nd Jul 2025555 AMAQI
22nd Jul 2025556 AMAQI
22nd Jul 2025567 AMAQI
22nd Jul 2025288 AMAQI
22nd Jul 2025209 AMAQI
22nd Jul 20252210 AMAQI
22nd Jul 20252211 AMAQI
22nd Jul 20252212 PMAQI
22nd Jul 2025271 PMAQI
22nd Jul 2025342 PMAQI
22nd Jul 2025443 PMAQI
22nd Jul 2025224 PMAQI
22nd Jul 2025225 PMAQI
22nd Jul 2025226 PMAQI
22nd Jul 2025337 PMAQI
22nd Jul 2025528 PMAQI
22nd Jul 2025519 PMAQI
22nd Jul 20254610 PMAQI
22nd Jul 20254411 PMAQI
23rd Jul 20254612 AMAQI
23rd Jul 2025571 AMAQI
23rd Jul 2025582 AMAQI
23rd Jul 2025563 AMAQI
23rd Jul 2025544 AMAQI
27°C25/30°C
23rd Jul 2025545 AMAQI
23rd Jul 2025536 AMAQI
23rd Jul 2025537 AMAQI
23rd Jul 2025268 AMAQI
23rd Jul 2025179 AMAQI
23rd Jul 20251710 AMAQI
23rd Jul 20251911 AMAQI
23rd Jul 20252112 PMAQI
23rd Jul 2025221 PMAQI
23rd Jul 2025242 PMAQI
23rd Jul 2025283 PMAQI
23rd Jul 2025334 PMAQI
23rd Jul 2025285 PMAQI
23rd Jul 2025236 PMAQI
23rd Jul 2025287 PMAQI
23rd Jul 2025448 PMAQI
23rd Jul 2025449 PMAQI
23rd Jul 20254610 PMAQI
23rd Jul 20254211 PMAQI
24th Jul 20255212 AMAQI
24th Jul 2025521 AMAQI
24th Jul 2025542 AMAQI
24th Jul 2025533 AMAQI
24th Jul 2025504 AMAQI
27°C25/31°C
24th Jul 2025515 AMAQI
24th Jul 2025506 AMAQI
24th Jul 2025507 AMAQI
24th Jul 2025568 AMAQI
24th Jul 2025429 AMAQI
24th Jul 20256010 AMAQI
24th Jul 20255311 AMAQI
24th Jul 20255412 PMAQI
24th Jul 2025581 PMAQI
24th Jul 2025552 PMAQI
24th Jul 2025523 PMAQI
24th Jul 2025474 PMAQI
24th Jul 2025525 PMAQI
24th Jul 2025556 PMAQI
24th Jul 2025567 PMAQI
24th Jul 2025548 PMAQI
24th Jul 2025549 PMAQI
24th Jul 20253810 PMAQI
24th Jul 20254111 PMAQI
25th Jul 20254212 AMAQI
25th Jul 2025501 AMAQI
25th Jul 2025522 AMAQI
25th Jul 2025523 AMAQI
25th Jul 2025524 AMAQI
29°C25/35°C
25th Jul 2025525 AMAQI
25th Jul 2025526 AMAQI
25th Jul 2025527 AMAQI
25th Jul 2025538 AMAQI
25th Jul 2025529 AMAQI
25th Jul 20255010 AMAQI
25th Jul 20255111 AMAQI
25th Jul 20255312 PMAQI
25th Jul 2025491 PMAQI
25th Jul 2025462 PMAQI
25th Jul 2025503 PMAQI
25th Jul 2025524 PMAQI
25th Jul 2025515 PMAQI
25th Jul 2025496 PMAQI
25th Jul 2025527 PMAQI
25th Jul 2025548 PMAQI
25th Jul 2025559 PMAQI
25th Jul 20255510 PMAQI
25th Jul 20255811 PMAQI
26th Jul 20256012 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025523 AMAQI
26th Jul 2025524 AMAQI
30°C26/36°C
26th Jul 2025525 AMAQI
26th Jul 2025516 AMAQI
26th Jul 2025527 AMAQI
26th Jul 2025668 AMAQI
26th Jul 2025759 AMAQI
26th Jul 20257110 AMAQI
26th Jul 20257011 AMAQI
26th Jul 20256512 PMAQI
26th Jul 2025591 PMAQI
26th Jul 2025562 PMAQI
26th Jul 2025553 PMAQI
26th Jul 2025534 PMAQI
26th Jul 2025545 PMAQI
26th Jul 2025536 PMAQI
26th Jul 2025567 PMAQI
26th Jul 2025598 PMAQI
26th Jul 2025569 PMAQI
26th Jul 20255210 PMAQI
26th Jul 20255311 PMAQI
27th Jul 20255412 AMAQI
27th Jul 2025521 AMAQI
27th Jul 2025532 AMAQI
27th Jul 2025543 AMAQI
27th Jul 2025554 AMAQI
31°C26/36°C
27th Jul 2025565 AMAQI
27th Jul 2025566 AMAQI
27th Jul 2025557 AMAQI
27th Jul 2025638 AMAQI
27th Jul 2025699 AMAQI
27th Jul 20257110 AMAQI
27th Jul 20256811 AMAQI
27th Jul 20256912 PMAQI
27th Jul 2025681 PMAQI
27th Jul 2025582 PMAQI
27th Jul 2025543 PMAQI
27th Jul 2025454 PMAQI
27th Jul 2025275 PMAQI
27th Jul 2025226 PMAQI
27th Jul 2025287 PMAQI
27th Jul 2025428 PMAQI
27th Jul 2025409 PMAQI
27th Jul 20254610 PMAQI
27th Jul 20254311 PMAQI
28th Jul 20254312 AMAQI
28th Jul 2025541 AMAQI
28th Jul 2025542 AMAQI
28th Jul 2025553 AMAQI
28th Jul 2025574 AMAQI
29°C26/34°C
28th Jul 2025565 AMAQI
28th Jul 2025566 AMAQI
28th Jul 2025577 AMAQI
28th Jul 2025548 AMAQI
28th Jul 2025519 AMAQI
28th Jul 20255610 AMAQI
28th Jul 20255411 AMAQI
28th Jul 20255612 PMAQI
28th Jul 2025581 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025513 PMAQI
28th Jul 2025484 PMAQI
28th Jul 2025525 PMAQI
28th Jul 2025536 PMAQI
28th Jul 2025577 PMAQI
28th Jul 2025568 PMAQI
28th Jul 2025599 PMAQI
28th Jul 20255810 PMAQI
28th Jul 20255611 PMAQI
29th Jul 20255612 AMAQI
29th Jul 2025551 AMAQI
29th Jul 2025542 AMAQI
29th Jul 2025553 AMAQI
29th Jul 2025554 AMAQI
29°C25/34°C
29th Jul 2025555 AMAQI
29th Jul 2025556 AMAQI
29th Jul 2025557 AMAQI
29th Jul 2025628 AMAQI
29th Jul 2025669 AMAQI
29th Jul 20257110 AMAQI
29th Jul 20257411 AMAQI
29th Jul 20257412 PMAQI
29th Jul 2025701 PMAQI
29th Jul 2025642 PMAQI
29th Jul 2025533 PMAQI
29th Jul 2025524 PMAQI
29th Jul 2025515 PMAQI
29th Jul 2025496 PMAQI
29th Jul 2025507 PMAQI
29th Jul 2025558 PMAQI
29th Jul 2025569 PMAQI
29th Jul 20255610 PMAQI
29th Jul 20255611 PMAQI
30th Jul 20255712 AMAQI
30th Jul 2025541 AMAQI
30th Jul 2025552 AMAQI
30th Jul 2025563 AMAQI
30th Jul 2025584 AMAQI
29°C25/34°C
30th Jul 2025585 AMAQI
30th Jul 2025576 AMAQI
30th Jul 2025577 AMAQI
30th Jul 2025668 AMAQI
30th Jul 2025669 AMAQI
30th Jul 20257010 AMAQI
30th Jul 20257211 AMAQI
30th Jul 20257012 PMAQI
30th Jul 2025581 PMAQI
30th Jul 2025542 PMAQI
30th Jul 2025463 PMAQI
30th Jul 2025264 PMAQI
30th Jul 2025245 PMAQI
30th Jul 2025316 PMAQI
30th Jul 2025407 PMAQI
30th Jul 2025538 PMAQI
30th Jul 2025569 PMAQI
30th Jul 20255410 PMAQI
30th Jul 20255511 PMAQI
31st Jul 20255512 AMAQI
31st Jul 2025561 AMAQI
31st Jul 2025562 AMAQI
31st Jul 2025563 AMAQI
31st Jul 2025564 AMAQI
29°C26/34°C
31st Jul 2025565 AMAQI
31st Jul 2025566 AMAQI
31st Jul 2025567 AMAQI
31st Jul 2025568 AMAQI
31st Jul 2025569 AMAQI
31st Jul 20256810 AMAQI
31st Jul 20257411 AMAQI
31st Jul 20257712 PMAQI
31st Jul 2025761 PMAQI
31st Jul 2025742 PMAQI
31st Jul 2025643 PMAQI
31st Jul 2025624 PMAQI
31st Jul 2025545 PMAQI
31st Jul 2025586 PMAQI
31st Jul 2025607 PMAQI
31st Jul 2025618 PMAQI
31st Jul 2025629 PMAQI
31st Jul 20255910 PMAQI
31st Jul 20256111 PMAQI
1st Aug 20255912 AMAQI
1st Aug 2025561 AMAQI
1st Aug 2025562 AMAQI
1st Aug 2025563 AMAQI
1st Aug 2025584 AMAQI
30°C25/35°C
1st Aug 2025575 AMAQI
1st Aug 2025586 AMAQI
1st Aug 2025587 AMAQI
1st Aug 2025638 AMAQI
1st Aug 2025649 AMAQI
1st Aug 20256810 AMAQI
1st Aug 20256611 AMAQI
1st Aug 20256512 PMAQI
1st Aug 2025661 PMAQI
1st Aug 2025682 PMAQI
1st Aug 2025663 PMAQI
1st Aug 2025664 PMAQI
1st Aug 2025675 PMAQI
1st Aug 2025666 PMAQI
1st Aug 2025627 PMAQI
1st Aug 2025678 PMAQI
1st Aug 2025679 PMAQI
1st Aug 20257210 PMAQI
1st Aug 20257211 PMAQI
2nd Aug 20256612 AMAQI
2nd Aug 2025571 AMAQI
2nd Aug 2025562 AMAQI
2nd Aug 2025603 AMAQI
2nd Aug 2025604 AMAQI
30°C26/35°C
2nd Aug 2025605 AMAQI
2nd Aug 2025606 AMAQI
2nd Aug 2025617 AMAQI
2nd Aug 2025788 AMAQI
2nd Aug 2025819 AMAQI
2nd Aug 20257810 AMAQI
2nd Aug 20258011 AMAQI
2nd Aug 20258212 PMAQI
2nd Aug 2025691 PMAQI
2nd Aug 2025832 PMAQI
2nd Aug 2025713 PMAQI
2nd Aug 2025794 PMAQI
2nd Aug 2025765 PMAQI
2nd Aug 2025726 PMAQI
2nd Aug 2025687 PMAQI
2nd Aug 2025688 PMAQI
2nd Aug 2025709 PMAQI
2nd Aug 20257210 PMAQI
2nd Aug 20257011 PMAQI
3rd Aug 20256612 AMAQI
3rd Aug 2025581 AMAQI
3rd Aug 2025582 AMAQI
3rd Aug 2025623 AMAQI
3rd Aug 2025634 AMAQI
31°C26/36°C
3rd Aug 2025635 AMAQI
5 AM3rd Aug 2025626 AMAQI
3rd Aug 2025637 AMAQI
3rd Aug 2025638 AMAQI
3rd Aug 2025619 AMAQI
3rd Aug 20256510 AMAQI
3rd Aug 20256511 AMAQI
3rd Aug 20256612 PMAQI
12 PM3rd Aug 2025681 PMAQI
3rd Aug 2025632 PMAQI
3rd Aug 2025643 PMAQI
3rd Aug 2025644 PMAQI
3rd Aug 2025615 PMAQI
3rd Aug 2025646 PMAQI
3rd Aug 2025637 PMAQI
7 PM3rd Aug 2025648 PMAQI
3rd Aug 2025669 PMAQI
3rd Aug 20256810 PMAQI
12 AM
4 AM
--°C/°C
Day time
Avg. Highest Time
5 AM - 7 PM
58AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
5 AM - 7 PM
58AQI
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. 58), while the lowest AQI was between 5 AM to 7 PM (Avg. 58).
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
High Tech Zone Epa, Changsha, Hunan, China
2025
8%
17
53%
114
28%
60
9%
20
0.9%
2
0.4%
1
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
17 DaysModerate
114 DaysPoor
60 DaysUnhealthy
20 DaysSevere
2 DaysHazardous
1 DaysUnder WHO’s Safe Air Quality Limits: 8%
Health Risk Level:
Extreme
In 2025, 8% 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
High Tech Zone Epa, Changsha, 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
176AQI
176AQI
2nd January 2025
181AQI
181AQI
3rd January 2025
191AQI
191AQI
4th January 2025
218AQI
218AQI
5th January 2025
144AQI
144AQI
6th January 2025
161AQI
161AQI
7th January 2025
158AQI
158AQI
8th January 2025
142AQI
142AQI
9th January 2025
141AQI
141AQI
10th January 2025
113AQI
113AQI
11th January 2025
133AQI
133AQI
12th January 2025
132AQI
132AQI
13th January 2025
137AQI
137AQI
14th January 2025
147AQI
147AQI
15th January 2025
119AQI
119AQI
16th January 2025
124AQI
124AQI
17th January 2025
122AQI
122AQI
18th January 2025
141AQI
141AQI
19th January 2025
154AQI
154AQI
20th January 2025
164AQI
164AQI
21st January 2025
160AQI
160AQI
22nd January 2025
162AQI
162AQI
23rd January 2025
242AQI
242AQI
24th January 2025
174AQI
174AQI
25th January 2025
100AQI
100AQI
26th January 2025
97AQI
97AQI
27th January 2025
108AQI
108AQI
28th January 2025
116AQI
116AQI
29th January 2025
174AQI
174AQI
30th January 2025
133AQI
133AQI
31st January 2025
134AQI
134AQI
1st February 2025
113AQI
113AQI
2nd February 2025
121AQI
121AQI
3rd February 2025
128AQI
128AQI
4th February 2025
111AQI
111AQI
5th February 2025
139AQI
139AQI
6th February 2025
106AQI
106AQI
7th February 2025
121AQI
121AQI
8th February 2025
71AQI
71AQI
9th February 2025
91AQI
91AQI
10th February 2025
96AQI
96AQI
11th February 2025
128AQI
128AQI
12th February 2025
138AQI
138AQI
13th February 2025
156AQI
156AQI
14th February 2025
151AQI
151AQI
15th February 2025
160AQI
160AQI
16th February 2025
151AQI
151AQI
17th February 2025
120AQI
120AQI
18th February 2025
112AQI
112AQI
19th February 2025
112AQI
112AQI
20th February 2025
113AQI
113AQI
21st February 2025
152AQI
152AQI
22nd February 2025
78AQI
78AQI
23rd February 2025
156AQI
156AQI
24th February 2025
134AQI
134AQI
25th February 2025
156AQI
156AQI
26th February 2025
151AQI
151AQI
27th February 2025
135AQI
135AQI
28th February 2025
119AQI
119AQI
1st March 2025
90AQI
90AQI
2nd March 2025
83AQI
83AQI
3rd March 2025
47AQI
47AQI
4th March 2025
89AQI
89AQI
5th March 2025
79AQI
79AQI
6th March 2025
118AQI
118AQI
7th March 2025
96AQI
96AQI
8th March 2025
98AQI
98AQI
9th March 2025
123AQI
123AQI
10th March 2025
102AQI
102AQI
11th March 2025
106AQI
106AQI
12th March 2025
132AQI
132AQI
13th March 2025
124AQI
124AQI
14th March 2025
76AQI
76AQI
15th March 2025
90AQI
90AQI
16th March 2025
79AQI
79AQI
17th March 2025
80AQI
80AQI
18th March 2025
81AQI
81AQI
19th March 2025
79AQI
79AQI
20th March 2025
84AQI
84AQI
21st March 2025
98AQI
98AQI
22nd March 2025
98AQI
98AQI
23rd March 2025
130AQI
130AQI
24th March 2025
104AQI
104AQI
25th March 2025
133AQI
133AQI
26th March 2025
137AQI
137AQI
27th March 2025
137AQI
137AQI
28th March 2025
84AQI
84AQI
29th March 2025
100AQI
100AQI
30th March 2025
74AQI
74AQI
31st March 2025
96AQI
96AQI
1st April 2025
94AQI
94AQI
2nd April 2025
100AQI
100AQI
3rd April 2025
98AQI
98AQI
4th April 2025
121AQI
121AQI
5th April 2025
124AQI
124AQI
6th April 2025
126AQI
126AQI
7th April 2025
135AQI
135AQI
8th April 2025
135AQI
135AQI
9th April 2025
137AQI
137AQI
10th April 2025
122AQI
122AQI
11th April 2025
116AQI
116AQI
12th April 2025
412AQI
412AQI
13th April 2025
143AQI
143AQI
14th April 2025
158AQI
158AQI
15th April 2025
115AQI
115AQI
16th April 2025
128AQI
128AQI
17th April 2025
122AQI
122AQI
18th April 2025
119AQI
119AQI
19th April 2025
82AQI
82AQI
20th April 2025
108AQI
108AQI
21st April 2025
69AQI
69AQI
22nd April 2025
89AQI
89AQI
23rd April 2025
89AQI
89AQI
24th April 2025
73AQI
73AQI
25th April 2025
76AQI
76AQI
26th April 2025
72AQI
72AQI
27th April 2025
81AQI
81AQI
28th April 2025
92AQI
92AQI
29th April 2025
102AQI
102AQI
30th April 2025
90AQI
90AQI
1st May 2025
91AQI
91AQI
2nd May 2025
88AQI
88AQI
3rd May 2025
99AQI
99AQI
4th May 2025
101AQI
101AQI
5th May 2025
86AQI
86AQI
6th May 2025
99AQI
99AQI
7th May 2025
100AQI
100AQI
8th May 2025
76AQI
76AQI
9th May 2025
80AQI
80AQI
10th May 2025
80AQI
80AQI
11th May 2025
78AQI
78AQI
12th May 2025
86AQI
86AQI
13th May 2025
85AQI
85AQI
14th May 2025
98AQI
98AQI
15th May 2025
92AQI
92AQI
16th May 2025
78AQI
78AQI
17th May 2025
83AQI
83AQI
18th May 2025
90AQI
90AQI
19th May 2025
76AQI
76AQI
20th May 2025
54AQI
54AQI
21st May 2025
62AQI
62AQI
22nd May 2025
56AQI
56AQI
23rd May 2025
71AQI
71AQI
24th May 2025
94AQI
94AQI
25th May 2025
100AQI
100AQI
26th May 2025
96AQI
96AQI
27th May 2025
115AQI
115AQI
28th May 2025
72AQI
72AQI
29th May 2025
68AQI
68AQI
30th May 2025
59AQI
59AQI
31st May 2025
55AQI
55AQI
1st June 2025
44AQI
44AQI
2nd June 2025
62AQI
62AQI
3rd June 2025
72AQI
72AQI
4th June 2025
85AQI
85AQI
5th June 2025
79AQI
79AQI
6th June 2025
82AQI
82AQI
7th June 2025
62AQI
62AQI
8th June 2025
70AQI
70AQI
9th June 2025
63AQI
63AQI
10th June 2025
70AQI
70AQI
11th June 2025
59AQI
59AQI
12th June 2025
60AQI
60AQI
13th June 2025
68AQI
68AQI
14th June 2025
56AQI
56AQI
15th June 2025
59AQI
59AQI
16th June 2025
58AQI
58AQI
17th June 2025
50AQI
50AQI
18th June 2025
52AQI
52AQI
19th June 2025
53AQI
53AQI
20th June 2025
51AQI
51AQI
21st June 2025
50AQI
50AQI
22nd June 2025
37AQI
37AQI
23rd June 2025
37AQI
37AQI
24th June 2025
41AQI
41AQI
25th June 2025
49AQI
49AQI
26th June 2025
55AQI
55AQI
27th June 2025
52AQI
52AQI
28th June 2025
48AQI
48AQI
29th June 2025
50AQI
50AQI
30th June 2025
51AQI
51AQI
1st July 2025
45AQI
45AQI
2nd July 2025
42AQI
42AQI
3rd July 2025
47AQI
47AQI
4th July 2025
52AQI
52AQI
5th July 2025
60AQI
60AQI
6th July 2025
62AQI
62AQI
7th July 2025
68AQI
68AQI
8th July 2025
71AQI
71AQI
9th July 2025
67AQI
67AQI
10th July 2025
58AQI
58AQI
11th July 2025
63AQI
63AQI
12th July 2025
61AQI
61AQI
13th July 2025
60AQI
60AQI
14th July 2025
61AQI
61AQI
15th July 2025
60AQI
60AQI
16th July 2025
59AQI
59AQI
17th July 2025
61AQI
61AQI
18th July 2025
64AQI
64AQI
19th July 2025
63AQI
63AQI
20th July 2025
54AQI
54AQI
21st July 2025
43AQI
43AQI
22nd July 2025
42AQI
42AQI
23rd July 2025
39AQI
39AQI
24th July 2025
51AQI
51AQI
25th July 2025
52AQI
52AQI
26th July 2025
57AQI
57AQI
27th July 2025
50AQI
50AQI
28th July 2025
55AQI
55AQI
29th July 2025
57AQI
57AQI
30th July 2025
53AQI
53AQI
31st July 2025
61AQI
61AQI
1st August 2025
63AQI
63AQI
2nd August 2025
66AQI
66AQI
148AQI
126AQI
98AQI
118AQI
83AQI
58AQI
56AQI
65AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202597AQI
2
16
11
2
4
16
8
1
19
11
13
15
1
1
29
2
9
21
7
24
2
17
114
60
20
2
1
Highest AQI recorded in
January148AQI
Lowest AQI recorded in
July56AQI
202499AQI
5
12
14
1
11
10
7
15
13
3
1
19
9
1
2
20
9
15
15
19
12
6
25
1
20
7
2
2
10
9
10
2
8
6
14
1
16
14
49
161
91
65
Highest AQI recorded in
December142AQI
Lowest AQI recorded in
July48AQI
202398AQI
1
3
10
13
4
1
3
14
10
2
8
15
6
4
19
6
1
2
22
7
6
24
11
20
3
26
2
4
26
1
11
18
1
4
20
2
1
8
15
4
3
36
174
107
37
7
Highest AQI recorded in
January154AQI
Lowest AQI recorded in
July56AQI
2022106AQI
5
9
14
3
6
9
6
2
14
11
4
1
15
12
1
2
14
14
1
7
23
12
9
1
15
12
1
5
5
16
5
10
17
3
2
16
13
30
118
116
48
3
Highest AQI recorded in
January150AQI
Lowest AQI recorded in
August42AQI
2021106AQI
2
12
16
1
4
14
9
1
8
22
1
2
8
18
2
2
22
6
1
6
18
6
4
27
3
18
3
21
6
2
14
9
6
9
11
10
4
7
16
4
22
155
111
61
6
Highest AQI recorded in
January154AQI
Lowest AQI recorded in
July62AQI
202099AQI
2
5
4
2
6
12
3
9
9
9
20
1
8
18
5
11
16
4
5
19
6
4
5
14
8
9
9
11
1
2
5
20
4
39
109
69
44
5
Highest AQI recorded in
December163AQI
Lowest AQI recorded in
August63AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2021(Avg.)
106AQILeast Polluted Year Recorded
2025(Avg.)
97AQIHigh Tech Zone Epa's annual 2025 AQI (97) shows an average percentage change of -4.06% (improved AQI) compared to previous years: 2020 (99), 2021 (106), 2022 (106), 2023 (98), 2024 (99).
