Heilongtan, Meishan, Sichuan, 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
Heilongtan, Meishan, Sichuan, China
2021
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
4th Aug 2021
91AQILowest AQI recorded on
13th Aug 2021
34AQISame Day Analysis (2nd August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 2nd highest AQI at 62 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Heilongtan, Meishan, Sichuan, China
AQI
Day
Night
.
6 AM3rd Aug 2025
8 PM
5 AM4th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
10AM3rd Aug
74AQI
Avg. Lowest Time
2PM3rd Aug
58AQI
In the last 24 hours,
Heilongtan's AQI reached its highest point of 74 at 10 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Heilongtan, Meishan, Sichuan, China
JulAug
05th - 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 - 04th04th
Day
Night
5th Jul 2025526 AMAQI
5th Jul 2025527 AMAQI
5th Jul 2025288 AMAQI
5th Jul 2025229 AMAQI
5th Jul 20252010 AMAQI
5th Jul 20252111 AMAQI
5th Jul 20252612 PMAQI
5th Jul 2025291 PMAQI
5th Jul 2025292 PMAQI
5th Jul 2025263 PMAQI
5th Jul 2025264 PMAQI
5th Jul 2025265 PMAQI
5th Jul 2025276 PMAQI
5th Jul 2025367 PMAQI
5th Jul 2025418 PMAQI
5th Jul 2025439 PMAQI
5th Jul 20254510 PMAQI
5th Jul 20254311 PMAQI
6th Jul 20254212 AMAQI
6th Jul 2025531 AMAQI
6th Jul 2025542 AMAQI
6th Jul 2025523 AMAQI
6th Jul 2025504 AMAQI
6th Jul 2025505 AMAQI
22°C20/25°C
6th Jul 2025506 AMAQI
6th Jul 2025517 AMAQI
6th Jul 2025528 AMAQI
6th Jul 2025529 AMAQI
6th Jul 20255710 AMAQI
6th Jul 20255911 AMAQI
6th Jul 20254112 PMAQI
6th Jul 2025431 PMAQI
6th Jul 2025362 PMAQI
6th Jul 2025363 PMAQI
6th Jul 2025314 PMAQI
6th Jul 2025365 PMAQI
6th Jul 2025266 PMAQI
6th Jul 2025477 PMAQI
6th Jul 2025578 PMAQI
6th Jul 2025549 PMAQI
6th Jul 20255210 PMAQI
6th Jul 20255611 PMAQI
7th Jul 20255612 AMAQI
7th Jul 2025521 AMAQI
7th Jul 2025522 AMAQI
7th Jul 2025523 AMAQI
7th Jul 2025524 AMAQI
7th Jul 2025525 AMAQI
24°C22/25°C
7th Jul 2025526 AMAQI
7th Jul 2025527 AMAQI
7th Jul 2025318 AMAQI
7th Jul 2025289 AMAQI
7th Jul 20253110 AMAQI
7th Jul 20253011 AMAQI
7th Jul 20253312 PMAQI
7th Jul 2025301 PMAQI
7th Jul 2025372 PMAQI
7th Jul 2025373 PMAQI
7th Jul 2025344 PMAQI
7th Jul 2025335 PMAQI
7th Jul 2025336 PMAQI
7th Jul 2025427 PMAQI
7th Jul 2025528 PMAQI
7th Jul 2025509 PMAQI
7th Jul 20255310 PMAQI
7th Jul 20255311 PMAQI
8th Jul 20255212 AMAQI
8th Jul 2025541 AMAQI
8th Jul 2025542 AMAQI
8th Jul 2025533 AMAQI
8th Jul 2025514 AMAQI
8th Jul 2025525 AMAQI
22°C21/25°C
8th Jul 2025526 AMAQI
8th Jul 2025527 AMAQI
8th Jul 2025468 AMAQI
8th Jul 2025459 AMAQI
8th Jul 20255310 AMAQI
8th Jul 20254211 AMAQI
8th Jul 20254412 PMAQI
8th Jul 2025451 PMAQI
8th Jul 2025482 PMAQI
8th Jul 2025463 PMAQI
8th Jul 2025484 PMAQI
8th Jul 2025525 PMAQI
8th Jul 2025576 PMAQI
8th Jul 2025587 PMAQI
8th Jul 2025568 PMAQI
8th Jul 2025599 PMAQI
8th Jul 20255710 PMAQI
8th Jul 20255811 PMAQI
9th Jul 20255912 AMAQI
9th Jul 2025541 AMAQI
9th Jul 2025542 AMAQI
9th Jul 2025533 AMAQI
9th Jul 2025524 AMAQI
9th Jul 2025525 AMAQI
24°C21/27°C
9th Jul 2025526 AMAQI
9th Jul 2025527 AMAQI
9th Jul 2025668 AMAQI
9th Jul 2025729 AMAQI
9th Jul 20257310 AMAQI
9th Jul 20256211 AMAQI
9th Jul 20256512 PMAQI
9th Jul 2025591 PMAQI
9th Jul 2025582 PMAQI
9th Jul 2025513 PMAQI
9th Jul 2025344 PMAQI
9th Jul 2025305 PMAQI
9th Jul 2025356 PMAQI
9th Jul 2025477 PMAQI
9th Jul 2025528 PMAQI
9th Jul 2025529 PMAQI
9th Jul 20255210 PMAQI
9th Jul 20255111 PMAQI
10th Jul 20255112 AMAQI
10th Jul 2025541 AMAQI
10th Jul 2025542 AMAQI
10th Jul 2025553 AMAQI
10th Jul 2025564 AMAQI
10th Jul 2025565 AMAQI
26°C23/30°C
10th Jul 2025566 AMAQI
10th Jul 2025577 AMAQI
10th Jul 2025438 AMAQI
10th Jul 2025619 AMAQI
10th Jul 20256010 AMAQI
10th Jul 20255111 AMAQI
10th Jul 20253912 PMAQI
10th Jul 2025341 PMAQI
10th Jul 2025372 PMAQI
10th Jul 2025353 PMAQI
10th Jul 2025304 PMAQI
10th Jul 2025275 PMAQI
10th Jul 2025336 PMAQI
10th Jul 2025427 PMAQI
10th Jul 2025548 PMAQI
10th Jul 2025559 PMAQI
10th Jul 20255510 PMAQI
10th Jul 20255611 PMAQI
11th Jul 20255812 AMAQI
11th Jul 2025561 AMAQI
11th Jul 2025552 AMAQI
11th Jul 2025553 AMAQI
11th Jul 2025554 AMAQI
11th Jul 2025555 AMAQI
27°C23/32°C
11th Jul 2025556 AMAQI
11th Jul 2025557 AMAQI
11th Jul 2025308 AMAQI
11th Jul 2025229 AMAQI
11th Jul 20252210 AMAQI
11th Jul 20252611 AMAQI
11th Jul 20253012 PMAQI
11th Jul 2025501 PMAQI
11th Jul 2025482 PMAQI
11th Jul 2025543 PMAQI
11th Jul 2025534 PMAQI
11th Jul 2025365 PMAQI
11th Jul 2025296 PMAQI
11th Jul 2025387 PMAQI
11th Jul 2025478 PMAQI
11th Jul 2025449 PMAQI
11th Jul 20254810 PMAQI
11th Jul 20254711 PMAQI
12th Jul 20255012 AMAQI
12th Jul 2025541 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025553 AMAQI
12th Jul 2025544 AMAQI
12th Jul 2025545 AMAQI
26°C23/30°C
12th Jul 2025546 AMAQI
12th Jul 2025547 AMAQI
12th Jul 2025508 AMAQI
12th Jul 2025559 AMAQI
12th Jul 20255910 AMAQI
12th Jul 20255811 AMAQI
12th Jul 20255912 PMAQI
12th Jul 2025531 PMAQI
12th Jul 2025512 PMAQI
12th Jul 2025563 PMAQI
12th Jul 2025544 PMAQI
12th Jul 2025535 PMAQI
12th Jul 2025546 PMAQI
12th Jul 2025467 PMAQI
12th Jul 2025538 PMAQI
12th Jul 2025519 PMAQI
12th Jul 20255410 PMAQI
12th Jul 20255611 PMAQI
13th Jul 20255712 AMAQI
13th Jul 2025551 AMAQI
13th Jul 2025552 AMAQI
13th Jul 2025543 AMAQI
13th Jul 2025554 AMAQI
13th Jul 2025555 AMAQI
26°C22/31°C
13th Jul 2025556 AMAQI
13th Jul 2025557 AMAQI
13th Jul 2025618 AMAQI
13th Jul 2025689 AMAQI
13th Jul 20257010 AMAQI
13th Jul 20256811 AMAQI
13th Jul 20256212 PMAQI
13th Jul 2025551 PMAQI
13th Jul 2025542 PMAQI
13th Jul 2025523 PMAQI
13th Jul 2025474 PMAQI
13th Jul 2025415 PMAQI
13th Jul 2025516 PMAQI
13th Jul 2025577 PMAQI
13th Jul 2025588 PMAQI
13th Jul 2025589 PMAQI
13th Jul 20255910 PMAQI
13th Jul 20256111 PMAQI
14th Jul 20256012 AMAQI
14th Jul 2025561 AMAQI
14th Jul 2025562 AMAQI
14th Jul 2025563 AMAQI
14th Jul 2025574 AMAQI
14th Jul 2025585 AMAQI
27°C23/32°C
14th Jul 2025586 AMAQI
14th Jul 2025587 AMAQI
14th Jul 2025628 AMAQI
14th Jul 2025589 AMAQI
14th Jul 20255710 AMAQI
14th Jul 20255611 AMAQI
14th Jul 20256212 PMAQI
14th Jul 2025561 PMAQI
14th Jul 2025592 PMAQI
14th Jul 2025573 PMAQI
14th Jul 2025604 PMAQI
14th Jul 2025565 PMAQI
14th Jul 2025536 PMAQI
14th Jul 2025567 PMAQI
14th Jul 2025578 PMAQI
14th Jul 2025589 PMAQI
14th Jul 20256010 PMAQI
14th Jul 20256411 PMAQI
15th Jul 20256412 AMAQI
15th Jul 2025601 AMAQI
15th Jul 2025572 AMAQI
15th Jul 2025583 AMAQI
15th Jul 2025584 AMAQI
15th Jul 2025585 AMAQI
28°C24/32°C
15th Jul 2025586 AMAQI
15th Jul 2025587 AMAQI
15th Jul 2025748 AMAQI
15th Jul 2025819 AMAQI
15th Jul 20258810 AMAQI
15th Jul 20259111 AMAQI
15th Jul 20257812 PMAQI
15th Jul 2025761 PMAQI
15th Jul 2025672 PMAQI
15th Jul 2025613 PMAQI
15th Jul 2025584 PMAQI
15th Jul 2025585 PMAQI
15th Jul 2025586 PMAQI
15th Jul 2025607 PMAQI
15th Jul 2025588 PMAQI
15th Jul 2025619 PMAQI
15th Jul 20256210 PMAQI
15th Jul 20256311 PMAQI
16th Jul 20256412 AMAQI
16th Jul 2025591 AMAQI
16th Jul 2025592 AMAQI
16th Jul 2025613 AMAQI
16th Jul 2025634 AMAQI
16th Jul 2025635 AMAQI
29°C25/33°C
16th Jul 2025636 AMAQI
16th Jul 2025637 AMAQI
16th Jul 2025888 AMAQI
16th Jul 2025949 AMAQI
16th Jul 20259210 AMAQI
16th Jul 20259211 AMAQI
16th Jul 20258412 PMAQI
16th Jul 2025791 PMAQI
16th Jul 2025642 PMAQI
16th Jul 2025723 PMAQI
16th Jul 2025684 PMAQI
16th Jul 2025665 PMAQI
16th Jul 2025646 PMAQI
16th Jul 2025647 PMAQI
16th Jul 2025648 PMAQI
16th Jul 2025639 PMAQI
16th Jul 20256310 PMAQI
16th Jul 20256411 PMAQI
17th Jul 20256812 AMAQI
17th Jul 2025631 AMAQI
17th Jul 2025632 AMAQI
17th Jul 2025643 AMAQI
17th Jul 2025684 AMAQI
17th Jul 2025685 AMAQI
30°C26/34°C
17th Jul 2025686 AMAQI
17th Jul 2025687 AMAQI
17th Jul 2025798 AMAQI
17th Jul 2025849 AMAQI
17th Jul 20259010 AMAQI
17th Jul 20259211 AMAQI
17th Jul 20258612 PMAQI
17th Jul 2025831 PMAQI
17th Jul 2025642 PMAQI
17th Jul 2025663 PMAQI
17th Jul 2025584 PMAQI
17th Jul 2025545 PMAQI
17th Jul 2025586 PMAQI
17th Jul 2025587 PMAQI
17th Jul 2025668 PMAQI
17th Jul 2025669 PMAQI
17th Jul 20256710 PMAQI
17th Jul 20256911 PMAQI
18th Jul 20257312 AMAQI
18th Jul 2025661 AMAQI
18th Jul 2025662 AMAQI
18th Jul 2025683 AMAQI
18th Jul 2025694 AMAQI
18th Jul 2025705 AMAQI
30°C27/35°C
18th Jul 2025696 AMAQI
18th Jul 2025707 AMAQI
18th Jul 2025948 AMAQI
18th Jul 2025979 AMAQI
18th Jul 20259210 AMAQI
18th Jul 20259311 AMAQI
18th Jul 20258812 PMAQI
18th Jul 2025911 PMAQI
18th Jul 2025942 PMAQI
18th Jul 2025633 PMAQI
18th Jul 2025434 PMAQI
18th Jul 2025515 PMAQI
18th Jul 2025496 PMAQI
18th Jul 2025507 PMAQI
18th Jul 2025608 PMAQI
18th Jul 2025629 PMAQI
18th Jul 20256410 PMAQI
18th Jul 20256211 PMAQI
19th Jul 20256312 AMAQI
19th Jul 2025681 AMAQI
19th Jul 2025682 AMAQI
19th Jul 2025693 AMAQI
19th Jul 2025724 AMAQI
19th Jul 2025725 AMAQI
29°C26/33°C
19th Jul 2025726 AMAQI
19th Jul 2025727 AMAQI
19th Jul 2025368 AMAQI
19th Jul 2025259 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252611 AMAQI
19th Jul 20253012 PMAQI
19th Jul 2025381 PMAQI
19th Jul 2025462 PMAQI
19th Jul 2025473 PMAQI
19th Jul 2025494 PMAQI
19th Jul 2025415 PMAQI
19th Jul 2025446 PMAQI
19th Jul 2025567 PMAQI
19th Jul 2025618 PMAQI
19th Jul 2025629 PMAQI
19th Jul 20256210 PMAQI
19th Jul 20256411 PMAQI
20th Jul 20256612 AMAQI
20th Jul 2025681 AMAQI
20th Jul 2025682 AMAQI
20th Jul 2025663 AMAQI
20th Jul 2025634 AMAQI
20th Jul 2025635 AMAQI
27°C24/31°C
20th Jul 2025636 AMAQI
20th Jul 2025637 AMAQI
20th Jul 2025638 AMAQI
20th Jul 2025689 AMAQI
20th Jul 20256010 AMAQI
20th Jul 20255711 AMAQI
20th Jul 20254612 PMAQI
20th Jul 2025371 PMAQI
20th Jul 2025482 PMAQI
20th Jul 2025483 PMAQI
20th Jul 2025444 PMAQI
20th Jul 2025295 PMAQI
20th Jul 2025246 PMAQI
20th Jul 2025367 PMAQI
20th Jul 2025548 PMAQI
20th Jul 2025549 PMAQI
20th Jul 20255410 PMAQI
20th Jul 20255511 PMAQI
21st Jul 20255612 AMAQI
21st Jul 2025651 AMAQI
21st Jul 2025652 AMAQI
21st Jul 2025643 AMAQI
21st Jul 2025634 AMAQI
21st Jul 2025635 AMAQI
26°C24/30°C
21st Jul 2025636 AMAQI
21st Jul 2025627 AMAQI
21st Jul 2025518 AMAQI
21st Jul 2025339 AMAQI
21st Jul 20254210 AMAQI
21st Jul 20254111 AMAQI
21st Jul 20254912 PMAQI
21st Jul 2025401 PMAQI
21st Jul 2025422 PMAQI
21st Jul 2025263 PMAQI
21st Jul 2025264 PMAQI
21st Jul 2025275 PMAQI
21st Jul 2025226 PMAQI
21st Jul 2025407 PMAQI
21st Jul 2025548 PMAQI
21st Jul 2025569 PMAQI
21st Jul 20255710 PMAQI
21st Jul 20255811 PMAQI
22nd Jul 20255812 AMAQI
22nd Jul 2025621 AMAQI
22nd Jul 2025632 AMAQI
22nd Jul 2025613 AMAQI
22nd Jul 2025594 AMAQI
22nd Jul 2025585 AMAQI
27°C23/32°C
22nd Jul 2025596 AMAQI
22nd Jul 2025587 AMAQI
22nd Jul 2025568 AMAQI
22nd Jul 2025539 AMAQI
22nd Jul 20255410 AMAQI
22nd Jul 20255211 AMAQI
22nd Jul 20254312 PMAQI
22nd Jul 2025301 PMAQI
22nd Jul 2025352 PMAQI
22nd Jul 2025423 PMAQI
22nd Jul 2025534 PMAQI
22nd Jul 2025535 PMAQI
22nd Jul 2025376 PMAQI
22nd Jul 2025477 PMAQI
22nd Jul 2025558 PMAQI
22nd Jul 2025549 PMAQI
22nd Jul 20255610 PMAQI
22nd Jul 20256111 PMAQI
23rd Jul 20256112 AMAQI
23rd Jul 2025611 AMAQI
23rd Jul 2025612 AMAQI
23rd Jul 2025603 AMAQI
23rd Jul 2025584 AMAQI
23rd Jul 2025585 AMAQI
27°C23/32°C
23rd Jul 2025586 AMAQI
23rd Jul 2025597 AMAQI
23rd Jul 2025448 AMAQI
23rd Jul 2025249 AMAQI
23rd Jul 20251910 AMAQI
23rd Jul 20252011 AMAQI
23rd Jul 20252012 PMAQI
23rd Jul 2025201 PMAQI
23rd Jul 2025202 PMAQI
23rd Jul 2025193 PMAQI
23rd Jul 2025184 PMAQI
23rd Jul 2025205 PMAQI
23rd Jul 2025226 PMAQI
23rd Jul 2025347 PMAQI
23rd Jul 2025528 PMAQI
23rd Jul 2025489 PMAQI
23rd Jul 20255210 PMAQI
23rd Jul 20255211 PMAQI
24th Jul 20254812 AMAQI
24th Jul 2025471 AMAQI
24th Jul 2025572 AMAQI
24th Jul 2025583 AMAQI
24th Jul 2025554 AMAQI
24th Jul 2025555 AMAQI
27°C24/31°C
24th Jul 2025556 AMAQI
24th Jul 2025557 AMAQI
24th Jul 2025318 AMAQI
24th Jul 2025219 AMAQI
24th Jul 20252110 AMAQI
24th Jul 20252211 AMAQI
24th Jul 20253212 PMAQI
24th Jul 2025311 PMAQI
24th Jul 2025242 PMAQI
24th Jul 2025203 PMAQI
24th Jul 2025204 PMAQI
24th Jul 2025225 PMAQI
24th Jul 2025226 PMAQI
24th Jul 2025277 PMAQI
24th Jul 2025408 PMAQI
24th Jul 2025429 PMAQI
24th Jul 20254210 PMAQI
24th Jul 20254811 PMAQI
25th Jul 20254912 AMAQI
25th Jul 2025551 AMAQI
25th Jul 2025552 AMAQI
25th Jul 2025533 AMAQI
25th Jul 2025514 AMAQI
25th Jul 2025505 AMAQI
26°C23/30°C
25th Jul 2025506 AMAQI
25th Jul 2025507 AMAQI
25th Jul 2025278 AMAQI
25th Jul 2025229 AMAQI
25th Jul 20253210 AMAQI
25th Jul 20253311 AMAQI
25th Jul 20252812 PMAQI
25th Jul 2025281 PMAQI
25th Jul 2025332 PMAQI
25th Jul 2025273 PMAQI
25th Jul 2025284 PMAQI
25th Jul 2025225 PMAQI
25th Jul 2025266 PMAQI
25th Jul 2025327 PMAQI
25th Jul 2025428 PMAQI
25th Jul 2025389 PMAQI
25th Jul 20253910 PMAQI
25th Jul 20253811 PMAQI
26th Jul 20254412 AMAQI
26th Jul 2025521 AMAQI
26th Jul 2025522 AMAQI
26th Jul 2025513 AMAQI
26th Jul 2025494 AMAQI
26th Jul 2025505 AMAQI
26°C23/30°C
26th Jul 2025496 AMAQI
26th Jul 2025497 AMAQI
26th Jul 2025278 AMAQI
26th Jul 2025209 AMAQI
26th Jul 20252310 AMAQI
26th Jul 20252411 AMAQI
26th Jul 20252312 PMAQI
26th Jul 2025221 PMAQI
26th Jul 2025242 PMAQI
26th Jul 2025203 PMAQI
26th Jul 2025184 PMAQI
26th Jul 2025185 PMAQI
26th Jul 2025206 PMAQI
26th Jul 2025277 PMAQI
26th Jul 2025378 PMAQI
26th Jul 2025379 PMAQI
26th Jul 20253610 PMAQI
26th Jul 20253811 PMAQI
27th Jul 20254012 AMAQI
27th Jul 2025521 AMAQI
27th Jul 2025522 AMAQI
27th Jul 2025493 AMAQI
27th Jul 2025454 AMAQI
27th Jul 2025445 AMAQI
26°C23/31°C
27th Jul 2025456 AMAQI
27th Jul 2025447 AMAQI
27th Jul 2025508 AMAQI
27th Jul 2025519 AMAQI
27th Jul 20255610 AMAQI
27th Jul 20255611 AMAQI
27th Jul 20255112 PMAQI
27th Jul 2025341 PMAQI
27th Jul 2025312 PMAQI
27th Jul 2025243 PMAQI
27th Jul 2025264 PMAQI
27th Jul 2025255 PMAQI
27th Jul 2025256 PMAQI
27th Jul 2025307 PMAQI
27th Jul 2025398 PMAQI
27th Jul 2025429 PMAQI
27th Jul 20255210 PMAQI
27th Jul 20255111 PMAQI
28th Jul 20255412 AMAQI
28th Jul 2025491 AMAQI
28th Jul 2025482 AMAQI
28th Jul 2025483 AMAQI
28th Jul 2025484 AMAQI
28th Jul 2025485 AMAQI
28°C23/32°C
28th Jul 2025486 AMAQI
28th Jul 2025487 AMAQI
28th Jul 2025588 AMAQI
28th Jul 2025629 AMAQI
28th Jul 20256810 AMAQI
28th Jul 20257111 AMAQI
28th Jul 20255712 PMAQI
28th Jul 2025521 PMAQI
28th Jul 2025542 PMAQI
28th Jul 2025503 PMAQI
28th Jul 2025394 PMAQI
28th Jul 2025295 PMAQI
28th Jul 2025266 PMAQI
28th Jul 2025417 PMAQI
28th Jul 2025478 PMAQI
28th Jul 2025539 PMAQI
28th Jul 20255410 PMAQI
28th Jul 20255611 PMAQI
29th Jul 20255812 AMAQI
29th Jul 2025511 AMAQI
29th Jul 2025512 AMAQI
29th Jul 2025523 AMAQI
29th Jul 2025534 AMAQI
29th Jul 2025535 AMAQI
29°C24/33°C
29th Jul 2025536 AMAQI
29th Jul 2025537 AMAQI
29th Jul 2025648 AMAQI
29th Jul 2025699 AMAQI
29th Jul 20257610 AMAQI
29th Jul 20257211 AMAQI
29th Jul 20256512 PMAQI
29th Jul 2025621 PMAQI
29th Jul 2025582 PMAQI
29th Jul 2025543 PMAQI
29th Jul 2025564 PMAQI
29th Jul 2025605 PMAQI
29th Jul 2025586 PMAQI
29th Jul 2025597 PMAQI
29th Jul 2025578 PMAQI
29th Jul 2025549 PMAQI
29th Jul 20255310 PMAQI
29th Jul 20255211 PMAQI
30th Jul 20255412 AMAQI
30th Jul 2025541 AMAQI
30th Jul 2025542 AMAQI
30th Jul 2025553 AMAQI
30th Jul 2025564 AMAQI
30th Jul 2025575 AMAQI
30°C25/34°C
30th Jul 2025576 AMAQI
30th Jul 2025567 AMAQI
30th Jul 2025628 AMAQI
30th Jul 2025689 AMAQI
30th Jul 20257110 AMAQI
30th Jul 20256811 AMAQI
30th Jul 20256612 PMAQI
30th Jul 2025621 PMAQI
30th Jul 2025602 PMAQI
30th Jul 2025613 PMAQI
30th Jul 2025684 PMAQI
30th Jul 2025605 PMAQI
30th Jul 2025606 PMAQI
30th Jul 2025627 PMAQI
30th Jul 2025608 PMAQI
30th Jul 2025619 PMAQI
30th Jul 20255810 PMAQI
30th Jul 20255711 PMAQI
31st Jul 20255612 AMAQI
31st Jul 2025561 AMAQI
31st Jul 2025562 AMAQI
31st Jul 2025573 AMAQI
31st Jul 2025574 AMAQI
31st Jul 2025575 AMAQI
29°C26/34°C
31st Jul 2025576 AMAQI
31st Jul 2025577 AMAQI
31st Jul 2025578 AMAQI
31st Jul 2025579 AMAQI
31st Jul 20256810 AMAQI
31st Jul 20257811 AMAQI
31st Jul 20257812 PMAQI
31st Jul 2025711 PMAQI
31st Jul 2025622 PMAQI
31st Jul 2025563 PMAQI
31st Jul 2025554 PMAQI
31st Jul 2025545 PMAQI
31st Jul 2025526 PMAQI
31st Jul 2025537 PMAQI
31st Jul 2025588 PMAQI
31st Jul 2025599 PMAQI
31st Jul 20256010 PMAQI
31st Jul 20256411 PMAQI
1st Aug 20256212 AMAQI
1st Aug 2025581 AMAQI
1st Aug 2025582 AMAQI
1st Aug 2025583 AMAQI
1st Aug 2025584 AMAQI
1st Aug 2025585 AMAQI
29°C25/33°C
1st Aug 2025586 AMAQI
1st Aug 2025577 AMAQI
1st Aug 2025768 AMAQI
1st Aug 2025649 AMAQI
1st Aug 20256910 AMAQI
1st Aug 20257011 AMAQI
1st Aug 20256412 PMAQI
1st Aug 2025641 PMAQI
1st Aug 2025662 PMAQI
1st Aug 2025623 PMAQI
1st Aug 2025584 PMAQI
1st Aug 2025545 PMAQI
1st Aug 2025566 PMAQI
1st Aug 2025597 PMAQI
1st Aug 2025608 PMAQI
1st Aug 2025619 PMAQI
1st Aug 20256610 PMAQI
1st Aug 20256711 PMAQI
2nd Aug 20256512 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025582 AMAQI
2nd Aug 2025593 AMAQI
2nd Aug 2025604 AMAQI
2nd Aug 2025605 AMAQI
29°C25/35°C
2nd Aug 2025606 AMAQI
2nd Aug 2025597 AMAQI
2nd Aug 2025688 AMAQI
2nd Aug 2025689 AMAQI
2nd Aug 20256810 AMAQI
2nd Aug 20256911 AMAQI
2nd Aug 20256212 PMAQI
2nd Aug 2025701 PMAQI
2nd Aug 2025652 PMAQI
2nd Aug 2025623 PMAQI
2nd Aug 2025574 PMAQI
2nd Aug 2025575 PMAQI
2nd Aug 2025556 PMAQI
2nd Aug 2025567 PMAQI
2nd Aug 2025608 PMAQI
2nd Aug 2025619 PMAQI
2nd Aug 20256410 PMAQI
2nd Aug 20256711 PMAQI
3rd Aug 20256212 AMAQI
3rd Aug 2025581 AMAQI
3rd Aug 2025602 AMAQI
3rd Aug 2025603 AMAQI
3rd Aug 2025614 AMAQI
3rd Aug 2025615 AMAQI
30°C26/35°C
3rd Aug 2025606 AMAQI
3rd Aug 2025607 AMAQI
3rd Aug 2025698 AMAQI
3rd Aug 2025709 AMAQI
3rd Aug 20257410 AMAQI
3rd Aug 20257011 AMAQI
3rd Aug 20256912 PMAQI
3rd Aug 2025661 PMAQI
3rd Aug 2025582 PMAQI
3rd Aug 2025633 PMAQI
3rd Aug 2025594 PMAQI
3rd Aug 2025605 PMAQI
3rd Aug 2025626 PMAQI
3rd Aug 2025627 PMAQI
3rd Aug 2025638 PMAQI
3rd Aug 2025659 PMAQI
3rd Aug 20256810 PMAQI
3rd Aug 20256811 PMAQI
4th Aug 20256412 AMAQI
4th Aug 2025601 AMAQI
--°C/°C
6 AM
1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 11 AM
56AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
3 PM - 6 PM
43AQI
4 hours / Day
120 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 11 AM (Avg. 56), while the lowest AQI was between 3 PM to 6 PM (Avg. 43).
Night time
Avg. Highest Time
12 AM - 5 AM
57AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
9 PM - 11 PM
55AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 5 AM (Avg. 57), while the lowest AQI was between 9 PM to 11 PM (Avg. 55).
2025 Days Vs Air Quality
Heilongtan, Meishan, Sichuan, China
2025
11%
23
53%
114
30%
64
6%
13
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
23 DaysModerate
114 DaysPoor
64 DaysUnhealthy
13 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 11%
Health Risk Level:
Extreme
In 2025, 11% 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
Heilongtan, Meishan, Sichuan, 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
157AQI
157AQI
2nd January 2025
165AQI
165AQI
3rd January 2025
169AQI
169AQI
4th January 2025
183AQI
183AQI
5th January 2025
166AQI
166AQI
6th January 2025
170AQI
170AQI
7th January 2025
141AQI
141AQI
8th January 2025
125AQI
125AQI
9th January 2025
126AQI
126AQI
10th January 2025
126AQI
126AQI
11th January 2025
103AQI
103AQI
12th January 2025
143AQI
143AQI
13th January 2025
139AQI
139AQI
14th January 2025
135AQI
135AQI
15th January 2025
145AQI
145AQI
16th January 2025
143AQI
143AQI
17th January 2025
158AQI
158AQI
18th January 2025
119AQI
119AQI
19th January 2025
147AQI
147AQI
20th January 2025
145AQI
145AQI
21st January 2025
171AQI
171AQI
22nd January 2025
192AQI
192AQI
23rd January 2025
193AQI
193AQI
24th January 2025
149AQI
149AQI
25th January 2025
116AQI
116AQI
26th January 2025
105AQI
105AQI
27th January 2025
129AQI
129AQI
28th January 2025
127AQI
127AQI
29th January 2025
180AQI
180AQI
30th January 2025
161AQI
161AQI
31st January 2025
136AQI
136AQI
1st February 2025
108AQI
108AQI
2nd February 2025
108AQI
108AQI
3rd February 2025
90AQI
90AQI
4th February 2025
104AQI
104AQI
5th February 2025
82AQI
82AQI
6th February 2025
84AQI
84AQI
7th February 2025
74AQI
74AQI
8th February 2025
65AQI
65AQI
9th February 2025
86AQI
86AQI
10th February 2025
101AQI
101AQI
11th February 2025
128AQI
128AQI
12th February 2025
83AQI
83AQI
13th February 2025
99AQI
99AQI
14th February 2025
95AQI
95AQI
15th February 2025
99AQI
99AQI
16th February 2025
118AQI
118AQI
17th February 2025
114AQI
114AQI
18th February 2025
135AQI
135AQI
19th February 2025
106AQI
106AQI
20th February 2025
114AQI
114AQI
21st February 2025
108AQI
108AQI
22nd February 2025
72AQI
72AQI
23rd February 2025
94AQI
94AQI
24th February 2025
74AQI
74AQI
25th February 2025
72AQI
72AQI
26th February 2025
87AQI
87AQI
27th February 2025
125AQI
125AQI
28th February 2025
126AQI
126AQI
1st March 2025
150AQI
150AQI
2nd March 2025
142AQI
142AQI
3rd March 2025
102AQI
102AQI
4th March 2025
95AQI
95AQI
5th March 2025
79AQI
79AQI
6th March 2025
63AQI
63AQI
7th March 2025
79AQI
79AQI
8th March 2025
82AQI
82AQI
9th March 2025
101AQI
101AQI
10th March 2025
122AQI
122AQI
11th March 2025
124AQI
124AQI
12th March 2025
125AQI
125AQI
13th March 2025
118AQI
118AQI
14th March 2025
113AQI
113AQI
15th March 2025
75AQI
75AQI
16th March 2025
76AQI
76AQI
17th March 2025
73AQI
73AQI
18th March 2025
82AQI
82AQI
19th March 2025
91AQI
91AQI
20th March 2025
90AQI
90AQI
21st March 2025
100AQI
100AQI
22nd March 2025
133AQI
133AQI
23rd March 2025
104AQI
104AQI
24th March 2025
103AQI
103AQI
25th March 2025
100AQI
100AQI
26th March 2025
113AQI
113AQI
27th March 2025
141AQI
141AQI
28th March 2025
93AQI
93AQI
29th March 2025
92AQI
92AQI
30th March 2025
75AQI
75AQI
31st March 2025
89AQI
89AQI
1st April 2025
102AQI
102AQI
2nd April 2025
86AQI
86AQI
3rd April 2025
96AQI
96AQI
4th April 2025
106AQI
106AQI
5th April 2025
75AQI
75AQI
6th April 2025
88AQI
88AQI
7th April 2025
88AQI
88AQI
8th April 2025
95AQI
95AQI
9th April 2025
96AQI
96AQI
10th April 2025
103AQI
103AQI
11th April 2025
98AQI
98AQI
12th April 2025
157AQI
157AQI
13th April 2025
117AQI
117AQI
14th April 2025
133AQI
133AQI
15th April 2025
130AQI
130AQI
16th April 2025
124AQI
124AQI
17th April 2025
101AQI
101AQI
18th April 2025
111AQI
111AQI
19th April 2025
86AQI
86AQI
20th April 2025
97AQI
97AQI
21st April 2025
95AQI
95AQI
22nd April 2025
88AQI
88AQI
23rd April 2025
100AQI
100AQI
24th April 2025
71AQI
71AQI
25th April 2025
82AQI
82AQI
26th April 2025
74AQI
74AQI
27th April 2025
75AQI
75AQI
28th April 2025
84AQI
84AQI
29th April 2025
60AQI
60AQI
30th April 2025
63AQI
63AQI
1st May 2025
69AQI
69AQI
2nd May 2025
84AQI
84AQI
3rd May 2025
85AQI
85AQI
4th May 2025
92AQI
92AQI
5th May 2025
62AQI
62AQI
6th May 2025
69AQI
69AQI
7th May 2025
71AQI
71AQI
8th May 2025
67AQI
67AQI
9th May 2025
116AQI
116AQI
10th May 2025
95AQI
95AQI
11th May 2025
106AQI
106AQI
12th May 2025
104AQI
104AQI
13th May 2025
91AQI
91AQI
14th May 2025
104AQI
104AQI
15th May 2025
86AQI
86AQI
16th May 2025
91AQI
91AQI
17th May 2025
117AQI
117AQI
18th May 2025
131AQI
131AQI
19th May 2025
104AQI
104AQI
20th May 2025
112AQI
112AQI
21st May 2025
106AQI
106AQI
22nd May 2025
97AQI
97AQI
23rd May 2025
85AQI
85AQI
24th May 2025
79AQI
79AQI
25th May 2025
78AQI
78AQI
26th May 2025
85AQI
85AQI
27th May 2025
65AQI
65AQI
28th May 2025
61AQI
61AQI
29th May 2025
67AQI
67AQI
30th May 2025
75AQI
75AQI
31st May 2025
59AQI
59AQI
1st June 2025
62AQI
62AQI
2nd June 2025
50AQI
50AQI
3rd June 2025
65AQI
65AQI
4th June 2025
70AQI
70AQI
5th June 2025
80AQI
80AQI
6th June 2025
86AQI
86AQI
7th June 2025
94AQI
94AQI
8th June 2025
77AQI
77AQI
9th June 2025
80AQI
80AQI
10th June 2025
76AQI
76AQI
11th June 2025
75AQI
75AQI
12th June 2025
74AQI
74AQI
13th June 2025
76AQI
76AQI
14th June 2025
81AQI
81AQI
15th June 2025
64AQI
64AQI
16th June 2025
66AQI
66AQI
17th June 2025
72AQI
72AQI
18th June 2025
53AQI
53AQI
19th June 2025
53AQI
53AQI
20th June 2025
62AQI
62AQI
21st June 2025
51AQI
51AQI
22nd June 2025
32AQI
32AQI
23rd June 2025
49AQI
49AQI
24th June 2025
39AQI
39AQI
25th June 2025
45AQI
45AQI
26th June 2025
50AQI
50AQI
27th June 2025
58AQI
58AQI
28th June 2025
60AQI
60AQI
29th June 2025
46AQI
46AQI
30th June 2025
45AQI
45AQI
1st July 2025
46AQI
46AQI
2nd July 2025
49AQI
49AQI
3rd July 2025
47AQI
47AQI
4th July 2025
53AQI
53AQI
5th July 2025
40AQI
40AQI
6th July 2025
48AQI
48AQI
7th July 2025
44AQI
44AQI
8th July 2025
52AQI
52AQI
9th July 2025
53AQI
53AQI
10th July 2025
49AQI
49AQI
11th July 2025
45AQI
45AQI
12th July 2025
54AQI
54AQI
13th July 2025
56AQI
56AQI
14th July 2025
58AQI
58AQI
15th July 2025
64AQI
64AQI
16th July 2025
68AQI
68AQI
17th July 2025
69AQI
69AQI
18th July 2025
69AQI
69AQI
19th July 2025
55AQI
55AQI
20th July 2025
54AQI
54AQI
21st July 2025
50AQI
50AQI
22nd July 2025
53AQI
53AQI
23rd July 2025
42AQI
42AQI
24th July 2025
39AQI
39AQI
25th July 2025
39AQI
39AQI
26th July 2025
35AQI
35AQI
27th July 2025
42AQI
42AQI
28th July 2025
49AQI
49AQI
29th July 2025
57AQI
57AQI
30th July 2025
60AQI
60AQI
31st July 2025
59AQI
59AQI
1st August 2025
61AQI
61AQI
2nd August 2025
62AQI
62AQI
147AQI
98AQI
101AQI
96AQI
88AQI
63AQI
52AQI
62AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202592AQI
19
12
15
13
17
14
20
9
1
22
9
8
22
15
16
2
23
114
64
13
Highest AQI recorded in
January147AQI
Lowest AQI recorded in
July52AQI
202481AQI
7
9
1
1
3
9
30
17
14
2
29
18
11
6
23
2
3
24
3
6
16
9
33
153
39
18
Highest AQI recorded in
January152AQI
Lowest AQI recorded in
March13AQI
2023134AQI
1
2
6
13
11
1
7
15
11
1
Highest AQI recorded in
December135AQI
Lowest AQI recorded in
November119AQI
2022106AQI
1
14
6
10
11
8
13
2
7
1
3
26
38
6
Highest AQI recorded in
January144AQI
Lowest AQI recorded in
May43AQI
202183AQI
4
18
9
1
10
13
4
16
15
3
26
1
1
15
2
6
22
2
10
17
15
16
16
11
6
11
14
4
10
14
4
58
172
69
17
Highest AQI recorded in
January131AQI
Lowest AQI recorded in
September53AQI
202078AQI
2
8
3
19
1
1
13
5
1
26
3
8
23
13
16
2
6
24
5
23
3
18
8
4
12
16
3
35
182
41
8
Highest AQI recorded in
December109AQI
Lowest AQI recorded in
July59AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
134AQILeast Polluted Year Recorded
2020(Avg.)
78AQIHeilongtan's annual 2025 AQI (92) shows an average percentage change of -0.7% (improved AQI) compared to previous years: 2020 (78), 2021 (83), 2022 (106), 2023 (134), 2024 (81).
