Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Institute Of Posts And Telecommunications, Changchun, Jilin, 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+

July Air Quality Analysis

Institute Of Posts And Telecommunications, Changchun, Jilin, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
1st Jul 2024
148AQI
Lowest AQI recorded on
26th Jul 2024
14AQI

Same Day Analysis (3rd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 58 of Moderate air quality, showing improvement over 2023, 2022 and 2021 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025

Institute Of Posts And Telecommunications, Changchun, Jilin, China

AQI
Day
Night
.

5 AM3rd Jul 2025

9 PM

4 AM4th Jul 2025

Day time
Avg. Highest Time
6AM3rd Jul

58AQI

Avg. Lowest Time
5PM3rd Jul

38AQI

Night time
Avg. Highest Time
5AM3rd Jul

58AQI

Avg. Lowest Time
12AM4th Jul

53AQI

In the last 24 hours,

Institute Of Posts And Telecommunications's AQI reached its highest point of 58 at 5 AM during the Night, while the lowest point, 38, was recorded at 5 PM during the Day between 3rd Jul and 4th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025

Institute Of Posts And Telecommunications, Changchun, Jilin, China

JunJul
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 - 01st01st - 02nd02nd - 03rd03rd - 04th04th
Day
Night
4th Jun 2025845 AMAQI
4th Jun 2025776 AMAQI
4th Jun 2025767 AMAQI
4th Jun 2025418 AMAQI
4th Jun 2025299 AMAQI
4th Jun 20252410 AMAQI
4th Jun 20252811 AMAQI
4th Jun 20254612 PMAQI
4th Jun 2025721 PMAQI
4th Jun 2025782 PMAQI
4th Jun 2025533 PMAQI
4th Jun 2025654 PMAQI
4th Jun 2025665 PMAQI
4th Jun 2025596 PMAQI
4th Jun 2025707 PMAQI
4th Jun 2025668 PMAQI
4th Jun 2025709 PMAQI
4th Jun 20255310 PMAQI
4th Jun 20255611 PMAQI
5th Jun 20255712 AMAQI
5th Jun 2025551 AMAQI
5th Jun 2025572 AMAQI
5th Jun 2025563 AMAQI
5th Jun 2025554 AMAQI

17°C11/23°C

5th Jun 2025555 AMAQI
5th Jun 2025566 AMAQI
5th Jun 2025557 AMAQI
5th Jun 2025488 AMAQI
5th Jun 2025539 AMAQI
5th Jun 20255410 AMAQI
5th Jun 20256111 AMAQI
5th Jun 20256212 PMAQI
5th Jun 2025621 PMAQI
5th Jun 2025602 PMAQI
5th Jun 2025523 PMAQI
5th Jun 2025324 PMAQI
5th Jun 2025285 PMAQI
5th Jun 2025386 PMAQI
5th Jun 2025457 PMAQI
5th Jun 2025508 PMAQI
5th Jun 2025539 PMAQI
5th Jun 20255310 PMAQI
5th Jun 20255611 PMAQI
6th Jun 20255612 AMAQI
6th Jun 2025621 AMAQI
6th Jun 2025662 AMAQI
6th Jun 2025653 AMAQI
6th Jun 2025644 AMAQI

20°C15/25°C

6th Jun 2025655 AMAQI
6th Jun 2025636 AMAQI
6th Jun 2025657 AMAQI
6th Jun 2025498 AMAQI
6th Jun 2025269 AMAQI
6th Jun 20253010 AMAQI
6th Jun 20253811 AMAQI
6th Jun 20253412 PMAQI
6th Jun 2025371 PMAQI
6th Jun 2025282 PMAQI
6th Jun 2025313 PMAQI
6th Jun 2025444 PMAQI
6th Jun 2025555 PMAQI
6th Jun 2025566 PMAQI
6th Jun 2025627 PMAQI
6th Jun 2025608 PMAQI
6th Jun 2025629 PMAQI
6th Jun 20256410 PMAQI
6th Jun 20256211 PMAQI
7th Jun 20256412 AMAQI
7th Jun 2025561 AMAQI
7th Jun 2025562 AMAQI
7th Jun 2025563 AMAQI
7th Jun 2025564 AMAQI

19°C13/26°C

7th Jun 2025565 AMAQI
7th Jun 2025556 AMAQI
7th Jun 2025567 AMAQI
7th Jun 2025528 AMAQI
7th Jun 2025329 AMAQI
7th Jun 20252210 AMAQI
7th Jun 20252111 AMAQI
7th Jun 20252212 PMAQI
7th Jun 2025221 PMAQI
7th Jun 2025222 PMAQI
7th Jun 2025243 PMAQI
7th Jun 2025204 PMAQI
7th Jun 2025225 PMAQI
7th Jun 2025226 PMAQI
7th Jun 2025287 PMAQI
7th Jun 2025398 PMAQI
7th Jun 2025569 PMAQI
7th Jun 20257210 PMAQI
7th Jun 20256811 PMAQI
8th Jun 20259012 AMAQI
8th Jun 2025581 AMAQI
8th Jun 2025562 AMAQI
8th Jun 2025573 AMAQI
8th Jun 2025564 AMAQI

19°C13/25°C

8th Jun 2025585 AMAQI
8th Jun 2025566 AMAQI
8th Jun 2025577 AMAQI
8th Jun 2025568 AMAQI
8th Jun 2025489 AMAQI
8th Jun 20255310 AMAQI
8th Jun 20255411 AMAQI
8th Jun 20255212 PMAQI
8th Jun 2025491 PMAQI
8th Jun 2025522 PMAQI
8th Jun 2025493 PMAQI
8th Jun 2025514 PMAQI
8th Jun 2025515 PMAQI
8th Jun 2025506 PMAQI
8th Jun 2025587 PMAQI
8th Jun 2025578 PMAQI
8th Jun 2025599 PMAQI
8th Jun 20256410 PMAQI
8th Jun 20256311 PMAQI
9th Jun 20256312 AMAQI
9th Jun 2025551 AMAQI
9th Jun 2025502 AMAQI
9th Jun 2025533 AMAQI
9th Jun 2025534 AMAQI

24°C15/32°C

9th Jun 2025525 AMAQI
9th Jun 2025526 AMAQI
9th Jun 2025527 AMAQI
9th Jun 2025528 AMAQI
9th Jun 2025549 AMAQI
9th Jun 20254410 AMAQI
9th Jun 20254611 AMAQI
9th Jun 20255712 PMAQI
9th Jun 2025611 PMAQI
9th Jun 2025602 PMAQI
9th Jun 2025543 PMAQI
9th Jun 2025514 PMAQI
9th Jun 2025535 PMAQI
9th Jun 2025566 PMAQI
9th Jun 2025587 PMAQI
9th Jun 2025588 PMAQI
9th Jun 2025599 PMAQI
9th Jun 20256810 PMAQI
9th Jun 20257511 PMAQI
10th Jun 20256212 AMAQI
10th Jun 2025551 AMAQI
10th Jun 2025552 AMAQI
10th Jun 2025563 AMAQI
10th Jun 2025564 AMAQI

19°C14/26°C

10th Jun 2025565 AMAQI
10th Jun 2025566 AMAQI
10th Jun 2025567 AMAQI
10th Jun 2025488 AMAQI
10th Jun 2025359 AMAQI
10th Jun 20253910 AMAQI
10th Jun 20253411 AMAQI
10th Jun 20254012 PMAQI
10th Jun 2025301 PMAQI
10th Jun 2025252 PMAQI
10th Jun 2025233 PMAQI
10th Jun 2025224 PMAQI
10th Jun 2025265 PMAQI
10th Jun 2025236 PMAQI
10th Jun 2025247 PMAQI
10th Jun 2025468 PMAQI
10th Jun 2025549 PMAQI
10th Jun 20255010 PMAQI
10th Jun 20255011 PMAQI
11th Jun 20255612 AMAQI
11th Jun 2025601 AMAQI
11th Jun 2025582 AMAQI
11th Jun 2025573 AMAQI
11th Jun 2025564 AMAQI

13°C12/14°C

11th Jun 2025555 AMAQI
11th Jun 2025576 AMAQI
11th Jun 2025557 AMAQI
11th Jun 2025538 AMAQI
11th Jun 2025529 AMAQI
11th Jun 20254410 AMAQI
11th Jun 20254211 AMAQI
11th Jun 20254312 PMAQI
11th Jun 2025391 PMAQI
11th Jun 2025462 PMAQI
11th Jun 2025373 PMAQI
11th Jun 2025274 PMAQI
11th Jun 2025285 PMAQI
11th Jun 2025346 PMAQI
11th Jun 2025347 PMAQI
11th Jun 2025438 PMAQI
11th Jun 2025449 PMAQI
11th Jun 20255410 PMAQI
11th Jun 20254811 PMAQI
12th Jun 20254312 AMAQI
12th Jun 2025501 AMAQI
12th Jun 2025582 AMAQI
12th Jun 2025573 AMAQI
12th Jun 2025564 AMAQI

20°C13/26°C

12th Jun 2025565 AMAQI
12th Jun 2025566 AMAQI
12th Jun 2025577 AMAQI
12th Jun 2025538 AMAQI
12th Jun 2025529 AMAQI
12th Jun 20254410 AMAQI
12th Jun 20253411 AMAQI
12th Jun 20253812 PMAQI
12th Jun 2025451 PMAQI
12th Jun 2025462 PMAQI
12th Jun 2025503 PMAQI
12th Jun 2025574 PMAQI
12th Jun 2025635 PMAQI
12th Jun 2025666 PMAQI
12th Jun 2025637 PMAQI
12th Jun 2025588 PMAQI
12th Jun 2025549 PMAQI
12th Jun 20255310 PMAQI
12th Jun 20255811 PMAQI
13th Jun 20255812 AMAQI
13th Jun 2025591 AMAQI
13th Jun 2025582 AMAQI
13th Jun 2025583 AMAQI
13th Jun 2025574 AMAQI

22°C15/29°C

13th Jun 2025575 AMAQI
13th Jun 2025576 AMAQI
13th Jun 2025567 AMAQI
13th Jun 2025608 AMAQI
13th Jun 2025569 AMAQI
13th Jun 20253810 AMAQI
13th Jun 20254211 AMAQI
13th Jun 20255012 PMAQI
13th Jun 2025531 PMAQI
13th Jun 2025542 PMAQI
13th Jun 2025553 PMAQI
13th Jun 2025564 PMAQI
13th Jun 2025565 PMAQI
13th Jun 2025566 PMAQI
13th Jun 2025577 PMAQI
13th Jun 2025588 PMAQI
13th Jun 2025599 PMAQI
13th Jun 20256410 PMAQI
13th Jun 20256811 PMAQI
14th Jun 20256612 AMAQI
14th Jun 2025591 AMAQI
14th Jun 2025602 AMAQI
14th Jun 2025583 AMAQI
14th Jun 2025574 AMAQI

24°C21/29°C

14th Jun 2025585 AMAQI
14th Jun 2025586 AMAQI
14th Jun 2025577 AMAQI
14th Jun 2025568 AMAQI
14th Jun 2025509 AMAQI
14th Jun 20255010 AMAQI
14th Jun 20254511 AMAQI
14th Jun 20253412 PMAQI
14th Jun 2025361 PMAQI
14th Jun 2025302 PMAQI
14th Jun 2025383 PMAQI
14th Jun 2025364 PMAQI
14th Jun 2025435 PMAQI
14th Jun 2025456 PMAQI
14th Jun 2025537 PMAQI
14th Jun 2025578 PMAQI
14th Jun 2025629 PMAQI
14th Jun 20257310 PMAQI
14th Jun 20257211 PMAQI
15th Jun 20257212 AMAQI
15th Jun 2025711 AMAQI
15th Jun 2025732 AMAQI
15th Jun 2025703 AMAQI
15th Jun 2025754 AMAQI

23°C18/29°C

15th Jun 2025725 AMAQI
15th Jun 2025756 AMAQI
15th Jun 2025787 AMAQI
15th Jun 2025738 AMAQI
15th Jun 2025809 AMAQI
15th Jun 20257710 AMAQI
15th Jun 20257311 AMAQI
15th Jun 20257112 PMAQI
15th Jun 2025741 PMAQI
15th Jun 2025842 PMAQI
15th Jun 2025783 PMAQI
15th Jun 2025674 PMAQI
15th Jun 2025585 PMAQI
15th Jun 2025576 PMAQI
15th Jun 2025597 PMAQI
15th Jun 2025568 PMAQI
15th Jun 2025559 PMAQI
15th Jun 20255710 PMAQI
15th Jun 20256111 PMAQI
16th Jun 20256412 AMAQI
16th Jun 2025721 AMAQI
16th Jun 2025742 AMAQI
16th Jun 2025743 AMAQI
16th Jun 2025754 AMAQI

21°C18/26°C

16th Jun 2025745 AMAQI
16th Jun 2025746 AMAQI
16th Jun 2025747 AMAQI
16th Jun 2025588 AMAQI
16th Jun 2025469 AMAQI
16th Jun 20254710 AMAQI
16th Jun 20254511 AMAQI
16th Jun 20254512 PMAQI
16th Jun 2025501 PMAQI
16th Jun 2025502 PMAQI
16th Jun 2025543 PMAQI
16th Jun 2025584 PMAQI
16th Jun 2025565 PMAQI
16th Jun 2025486 PMAQI
16th Jun 2025497 PMAQI
16th Jun 2025568 PMAQI
16th Jun 2025559 PMAQI
16th Jun 20255110 PMAQI
16th Jun 20255311 PMAQI
17th Jun 20255512 AMAQI
17th Jun 2025721 AMAQI
17th Jun 2025702 AMAQI
17th Jun 2025703 AMAQI
17th Jun 2025664 AMAQI

21°C17/25°C

17th Jun 2025665 AMAQI
17th Jun 2025676 AMAQI
17th Jun 2025687 AMAQI
17th Jun 2025588 AMAQI
17th Jun 2025569 AMAQI
17th Jun 20255410 AMAQI
17th Jun 20254711 AMAQI
17th Jun 20254812 PMAQI
17th Jun 2025391 PMAQI
17th Jun 2025452 PMAQI
17th Jun 2025533 PMAQI
17th Jun 2025464 PMAQI
17th Jun 2025395 PMAQI
17th Jun 2025406 PMAQI
17th Jun 2025497 PMAQI
17th Jun 2025598 PMAQI
17th Jun 2025619 PMAQI
17th Jun 20256010 PMAQI
17th Jun 20256311 PMAQI
18th Jun 20256212 AMAQI
18th Jun 2025671 AMAQI
18th Jun 2025662 AMAQI
18th Jun 2025653 AMAQI
18th Jun 2025644 AMAQI

21°C16/25°C

18th Jun 2025645 AMAQI
18th Jun 2025646 AMAQI
18th Jun 2025627 AMAQI
18th Jun 2025638 AMAQI
18th Jun 2025629 AMAQI
18th Jun 20256010 AMAQI
18th Jun 20255811 AMAQI
18th Jun 20255512 PMAQI
18th Jun 2025551 PMAQI
18th Jun 2025562 PMAQI
18th Jun 2025593 PMAQI
18th Jun 2025624 PMAQI
18th Jun 2025625 PMAQI
18th Jun 2025596 PMAQI
18th Jun 2025587 PMAQI
18th Jun 2025628 PMAQI
18th Jun 2025629 PMAQI
18th Jun 20256410 PMAQI
18th Jun 20257611 PMAQI
19th Jun 20257212 AMAQI
19th Jun 2025641 AMAQI
19th Jun 2025642 AMAQI
19th Jun 2025633 AMAQI
19th Jun 2025634 AMAQI

24°C17/30°C

19th Jun 2025635 AMAQI
19th Jun 2025646 AMAQI
19th Jun 2025627 AMAQI
19th Jun 2025668 AMAQI
19th Jun 2025649 AMAQI
19th Jun 20256510 AMAQI
19th Jun 20256111 AMAQI
19th Jun 20255812 PMAQI
19th Jun 2025631 PMAQI
19th Jun 2025652 PMAQI
19th Jun 2025623 PMAQI
19th Jun 2025604 PMAQI
19th Jun 2025575 PMAQI
19th Jun 2025586 PMAQI
19th Jun 2025597 PMAQI
19th Jun 2025638 PMAQI
19th Jun 2025639 PMAQI
19th Jun 20256410 PMAQI
19th Jun 20256211 PMAQI
20th Jun 20256012 AMAQI
20th Jun 2025651 AMAQI
20th Jun 2025642 AMAQI
20th Jun 2025653 AMAQI
20th Jun 2025634 AMAQI

20°C18/22°C

20th Jun 2025645 AMAQI
20th Jun 2025646 AMAQI
20th Jun 2025647 AMAQI
20th Jun 2025458 AMAQI
20th Jun 2025459 AMAQI
20th Jun 20254510 AMAQI
20th Jun 20253611 AMAQI
20th Jun 20254812 PMAQI
20th Jun 2025501 PMAQI
20th Jun 2025512 PMAQI
20th Jun 2025503 PMAQI
20th Jun 2025544 PMAQI
20th Jun 2025565 PMAQI
20th Jun 2025546 PMAQI
20th Jun 2025527 PMAQI
20th Jun 2025588 PMAQI
20th Jun 2025589 PMAQI
20th Jun 20256010 PMAQI
20th Jun 20255911 PMAQI
21st Jun 20255812 AMAQI
21st Jun 2025631 AMAQI
21st Jun 2025632 AMAQI
21st Jun 2025623 AMAQI
21st Jun 2025614 AMAQI

20°C16/24°C

21st Jun 2025615 AMAQI
21st Jun 2025616 AMAQI
21st Jun 2025627 AMAQI
21st Jun 2025318 AMAQI
21st Jun 2025189 AMAQI
21st Jun 20251910 AMAQI
21st Jun 20251811 AMAQI
21st Jun 20252512 PMAQI
21st Jun 2025281 PMAQI
21st Jun 2025272 PMAQI
21st Jun 2025263 PMAQI
21st Jun 2025264 PMAQI
21st Jun 2025275 PMAQI
21st Jun 2025276 PMAQI
21st Jun 2025317 PMAQI
21st Jun 2025328 PMAQI
21st Jun 2025329 PMAQI
21st Jun 20253210 PMAQI
21st Jun 20253211 PMAQI
22nd Jun 20253212 AMAQI
22nd Jun 2025321 AMAQI
22nd Jun 2025322 AMAQI
22nd Jun 2025323 AMAQI
22nd Jun 2025324 AMAQI

19°C13/24°C

22nd Jun 2025325 AMAQI
22nd Jun 2025326 AMAQI
22nd Jun 2025327 AMAQI
22nd Jun 2025328 AMAQI
22nd Jun 2025329 AMAQI
22nd Jun 20253210 AMAQI
22nd Jun 20253211 AMAQI
22nd Jun 20253212 PMAQI
22nd Jun 2025321 PMAQI
22nd Jun 2025322 PMAQI
22nd Jun 2025323 PMAQI
22nd Jun 2025324 PMAQI
22nd Jun 2025325 PMAQI
22nd Jun 2025326 PMAQI
22nd Jun 2025327 PMAQI
22nd Jun 2025328 PMAQI
22nd Jun 2025329 PMAQI
22nd Jun 20253210 PMAQI
22nd Jun 20253211 PMAQI
23rd Jun 20253212 AMAQI
23rd Jun 2025321 AMAQI
23rd Jun 2025322 AMAQI
23rd Jun 2025323 AMAQI
23rd Jun 2025324 AMAQI

24°C17/31°C

23rd Jun 2025365 AMAQI
23rd Jun 2025386 AMAQI
23rd Jun 2025387 AMAQI
23rd Jun 2025508 AMAQI
23rd Jun 2025589 AMAQI
23rd Jun 20256010 AMAQI
23rd Jun 20256111 AMAQI
23rd Jun 20255612 PMAQI
23rd Jun 2025541 PMAQI
23rd Jun 2025562 PMAQI
23rd Jun 2025563 PMAQI
23rd Jun 2025554 PMAQI
23rd Jun 2025565 PMAQI
23rd Jun 2025576 PMAQI
23rd Jun 2025567 PMAQI
23rd Jun 2025538 PMAQI
23rd Jun 2025539 PMAQI
23rd Jun 20255310 PMAQI
23rd Jun 20255311 PMAQI
24th Jun 20255212 AMAQI
24th Jun 2025411 AMAQI
24th Jun 2025392 AMAQI
24th Jun 2025423 AMAQI
24th Jun 2025464 AMAQI

26°C19/33°C

24th Jun 2025465 AMAQI
24th Jun 2025456 AMAQI
24th Jun 2025467 AMAQI
24th Jun 2025568 AMAQI
24th Jun 2025649 AMAQI
24th Jun 20257110 AMAQI
24th Jun 20256911 AMAQI
24th Jun 20256812 PMAQI
24th Jun 2025651 PMAQI
24th Jun 2025672 PMAQI
24th Jun 2025703 PMAQI
24th Jun 2025694 PMAQI
24th Jun 2025695 PMAQI
24th Jun 2025696 PMAQI
24th Jun 2025647 PMAQI
24th Jun 2025588 PMAQI
24th Jun 2025589 PMAQI
24th Jun 20255910 PMAQI
24th Jun 20256111 PMAQI
25th Jun 20256012 AMAQI
25th Jun 2025481 AMAQI
25th Jun 2025462 AMAQI
25th Jun 2025503 AMAQI
25th Jun 2025544 AMAQI

27°C20/34°C

25th Jun 2025545 AMAQI
25th Jun 2025546 AMAQI
25th Jun 2025547 AMAQI
25th Jun 2025908 AMAQI
25th Jun 2025889 AMAQI
25th Jun 20257810 AMAQI
25th Jun 20257311 AMAQI
25th Jun 20257012 PMAQI
25th Jun 2025681 PMAQI
25th Jun 2025692 PMAQI
25th Jun 2025683 PMAQI
25th Jun 2025664 PMAQI
25th Jun 2025685 PMAQI
25th Jun 2025666 PMAQI
25th Jun 2025647 PMAQI
25th Jun 2025628 PMAQI
25th Jun 2025629 PMAQI
25th Jun 20256310 PMAQI
25th Jun 20256211 PMAQI
26th Jun 20256212 AMAQI
26th Jun 2025561 AMAQI
26th Jun 2025552 AMAQI
26th Jun 2025573 AMAQI
26th Jun 2025604 AMAQI

28°C22/35°C

26th Jun 2025605 AMAQI
26th Jun 2025596 AMAQI
26th Jun 2025597 AMAQI
26th Jun 2025678 AMAQI
26th Jun 2025669 AMAQI
26th Jun 20256210 AMAQI
26th Jun 20255711 AMAQI
26th Jun 20255612 PMAQI
26th Jun 2025481 PMAQI
26th Jun 2025342 PMAQI
26th Jun 2025443 PMAQI
26th Jun 2025514 PMAQI
26th Jun 2025555 PMAQI
26th Jun 2025556 PMAQI
26th Jun 2025557 PMAQI
26th Jun 2025568 PMAQI
26th Jun 2025589 PMAQI
26th Jun 20256310 PMAQI
26th Jun 20256411 PMAQI
27th Jun 20256412 AMAQI
27th Jun 2025591 AMAQI
27th Jun 2025592 AMAQI
27th Jun 2025583 AMAQI
27th Jun 2025584 AMAQI

29°C22/35°C

27th Jun 2025585 AMAQI
27th Jun 2025586 AMAQI
27th Jun 2025587 AMAQI
27th Jun 2025588 AMAQI
27th Jun 2025619 AMAQI
27th Jun 20256610 AMAQI
27th Jun 20257111 AMAQI
27th Jun 20257012 PMAQI
27th Jun 2025741 PMAQI
27th Jun 2025732 PMAQI
27th Jun 2025693 PMAQI
27th Jun 2025654 PMAQI
27th Jun 2025665 PMAQI
27th Jun 2025716 PMAQI
27th Jun 2025667 PMAQI
27th Jun 2025658 PMAQI
27th Jun 2025649 PMAQI
27th Jun 20256810 PMAQI
27th Jun 20256711 PMAQI
28th Jun 20256512 AMAQI
28th Jun 2025601 AMAQI
28th Jun 2025602 AMAQI
28th Jun 2025613 AMAQI
28th Jun 2025624 AMAQI

25°C22/29°C

28th Jun 2025625 AMAQI
28th Jun 2025626 AMAQI
28th Jun 2025617 AMAQI
28th Jun 2025928 AMAQI
28th Jun 2025989 AMAQI
28th Jun 20259610 AMAQI
28th Jun 20259611 AMAQI
28th Jun 20259112 PMAQI
28th Jun 2025631 PMAQI
28th Jun 2025532 PMAQI
28th Jun 2025533 PMAQI
28th Jun 2025544 PMAQI
28th Jun 2025545 PMAQI
28th Jun 2025576 PMAQI
28th Jun 2025607 PMAQI
28th Jun 2025628 PMAQI
28th Jun 2025629 PMAQI
28th Jun 20256110 PMAQI
28th Jun 20256211 PMAQI
29th Jun 20255912 AMAQI
29th Jun 2025601 AMAQI
29th Jun 2025612 AMAQI
29th Jun 2025633 AMAQI
29th Jun 2025654 AMAQI

24°C21/27°C

29th Jun 2025665 AMAQI
29th Jun 2025666 AMAQI
29th Jun 2025667 AMAQI
29th Jun 2025648 AMAQI
29th Jun 2025659 AMAQI
29th Jun 20257110 AMAQI
29th Jun 20257411 AMAQI
29th Jun 20257012 PMAQI
29th Jun 2025671 PMAQI
29th Jun 2025642 PMAQI
29th Jun 2025653 PMAQI
29th Jun 2025644 PMAQI
29th Jun 2025665 PMAQI
29th Jun 2025716 PMAQI
29th Jun 2025727 PMAQI
29th Jun 2025688 PMAQI
29th Jun 2025689 PMAQI
29th Jun 20256810 PMAQI
29th Jun 20257011 PMAQI
30th Jun 20256812 AMAQI
30th Jun 2025621 AMAQI
30th Jun 2025622 AMAQI
30th Jun 2025633 AMAQI
30th Jun 2025644 AMAQI

24°C21/29°C

30th Jun 2025645 AMAQI
30th Jun 2025646 AMAQI
30th Jun 2025647 AMAQI
30th Jun 2025668 AMAQI
30th Jun 2025589 AMAQI
30th Jun 20255310 AMAQI
30th Jun 20254211 AMAQI
30th Jun 20254312 PMAQI
30th Jun 2025421 PMAQI
30th Jun 2025392 PMAQI
30th Jun 2025403 PMAQI
30th Jun 2025374 PMAQI
30th Jun 2025345 PMAQI
30th Jun 2025356 PMAQI
30th Jun 2025457 PMAQI
30th Jun 2025568 PMAQI
30th Jun 2025569 PMAQI
30th Jun 20255510 PMAQI
30th Jun 20255511 PMAQI
1st Jul 20255612 AMAQI
1st Jul 2025581 AMAQI
1st Jul 2025622 AMAQI
1st Jul 2025623 AMAQI
1st Jul 2025604 AMAQI

22°C21/24°C

1st Jul 2025615 AMAQI
1st Jul 2025616 AMAQI
1st Jul 2025607 AMAQI
1st Jul 2025378 AMAQI
1st Jul 2025429 AMAQI
1st Jul 20254810 AMAQI
1st Jul 20254811 AMAQI
1st Jul 20254712 PMAQI
1st Jul 2025481 PMAQI
1st Jul 2025522 PMAQI
1st Jul 2025523 PMAQI
1st Jul 2025534 PMAQI
1st Jul 2025525 PMAQI
1st Jul 2025526 PMAQI
1st Jul 2025557 PMAQI
1st Jul 2025598 PMAQI
1st Jul 2025599 PMAQI
1st Jul 20255810 PMAQI
1st Jul 20255811 PMAQI
2nd Jul 20255812 AMAQI
2nd Jul 2025601 AMAQI
2nd Jul 2025602 AMAQI
2nd Jul 2025593 AMAQI
2nd Jul 2025584 AMAQI

25°C20/29°C

2nd Jul 2025585 AMAQI
2nd Jul 2025586 AMAQI
2nd Jul 2025597 AMAQI
2nd Jul 2025408 AMAQI
2nd Jul 2025369 AMAQI
2nd Jul 20254410 AMAQI
2nd Jul 20254911 AMAQI
2nd Jul 20254712 PMAQI
2nd Jul 2025491 PMAQI
2nd Jul 2025512 PMAQI
2nd Jul 2025493 PMAQI
2nd Jul 2025504 PMAQI
2nd Jul 2025525 PMAQI
2nd Jul 2025556 PMAQI
2nd Jul 2025587 PMAQI
2nd Jul 2025588 PMAQI
2nd Jul 2025589 PMAQI
2nd Jul 20255810 PMAQI
2nd Jul 20255811 PMAQI
3rd Jul 20255812 AMAQI
3rd Jul 2025581 AMAQI
3rd Jul 2025582 AMAQI
3rd Jul 2025583 AMAQI
3rd Jul 2025584 AMAQI

26°C22/30°C

3rd Jul 2025585 AMAQI
3rd Jul 2025586 AMAQI
3rd Jul 2025587 AMAQI
3rd Jul 2025548 AMAQI
3rd Jul 2025489 AMAQI
3rd Jul 20254310 AMAQI
3rd Jul 20254311 AMAQI
3rd Jul 20254312 PMAQI
3rd Jul 2025431 PMAQI
3rd Jul 2025432 PMAQI
3rd Jul 2025433 PMAQI
3rd Jul 2025434 PMAQI
3rd Jul 2025385 PMAQI
3rd Jul 2025406 PMAQI
3rd Jul 2025477 PMAQI
3rd Jul 2025548 PMAQI
3rd Jul 2025539 PMAQI
3rd Jul 20255410 PMAQI
3rd Jul 20255411 PMAQI
4th Jul 20255312 AMAQI
4th Jul 2025581 AMAQI
4th Jul 2025582 AMAQI
4th Jul 2025583 AMAQI
4th Jul 2025564 AMAQI

25°C21/30°C

4th Jul 2025575 AMAQI
5 AM
4th Jul 2025566 AMAQI
4th Jul 2025577 AMAQI
4th Jul 2025378 AMAQI
4th Jul 2025259 AMAQI
4th Jul 20252410 AMAQI
4th Jul 20252511 AMAQI
4th Jul 20252612 PMAQI
1 PM
9 PM
1 AM
4 AM

0°C0/0°C

Day time
Avg. Highest Time
5 AM - 7 AM

59AQI

3 hours / Day
90 hours / Month
Avg. Lowest Time
9 AM - 6 PM

50AQI

10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 59), while the lowest AQI was between 9 AM to 6 PM (Avg. 50).
Night time
Avg. Highest Time
12 AM - 11 PM

59AQI

7 hours / Day
210 hours / Month
Avg. Lowest Time
12 AM - 11 PM

59AQI

7 hours / Day
210 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

Institute Of Posts And Telecommunications, Changchun, Jilin, China

2025

3%

6

55%

101

33%

61

9%

16

Total number of days with different AQI categories in last 185 days in 2025 (180 days remaining)

Good
6 Days
Moderate
101 Days
Poor
61 Days
Unhealthy
16 Days
Severe
0 Days
Hazardous
0 Days

Under WHO’s Safe Air Quality Limits: 3%

Health Risk Level:

Extreme

In 2025, 3% of 185 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

Institute Of Posts And Telecommunications, Changchun, Jilin, 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
84AQI
2nd January 2025
78AQI
3rd January 2025
77AQI
4th January 2025
105AQI
5th January 2025
122AQI
6th January 2025
146AQI
7th January 2025
107AQI
8th January 2025
120AQI
9th January 2025
115AQI
10th January 2025
142AQI
11th January 2025
128AQI
12th January 2025
153AQI
13th January 2025
152AQI
14th January 2025
112AQI
15th January 2025
97AQI
16th January 2025
102AQI
17th January 2025
108AQI
18th January 2025
121AQI
19th January 2025
114AQI
20th January 2025
133AQI
21st January 2025
147AQI
22nd January 2025
146AQI
23rd January 2025
146AQI
24th January 2025
147AQI
25th January 2025
154AQI
26th January 2025
152AQI
27th January 2025
167AQI
28th January 2025
120AQI
29th January 2025
151AQI
30th January 2025
119AQI
31st January 2025
151AQI
1st February 2025
141AQI
2nd February 2025
173AQI
3rd February 2025
124AQI
4th February 2025
152AQI
5th February 2025
131AQI
6th February 2025
128AQI
7th February 2025
101AQI
8th February 2025
91AQI
9th February 2025
107AQI
10th February 2025
116AQI
11th February 2025
135AQI
12th February 2025
109AQI
13th February 2025
128AQI
14th February 2025
116AQI
15th February 2025
134AQI
16th February 2025
85AQI
17th February 2025
85AQI
18th February 2025
70AQI
19th February 2025
78AQI
20th February 2025
76AQI
21st February 2025
80AQI
22nd February 2025
88AQI
23rd February 2025
89AQI
24th February 2025
84AQI
25th February 2025
146AQI
26th February 2025
81AQI
27th February 2025
140AQI
28th February 2025
142AQI
1st March 2025
107AQI
2nd March 2025
89AQI
3rd March 2025
91AQI
4th March 2025
82AQI
5th March 2025
126AQI
6th March 2025
113AQI
7th March 2025
108AQI
8th March 2025
140AQI
9th March 2025
145AQI
10th March 2025
164AQI
11th March 2025
152AQI
12th March 2025
158AQI
13th March 2025
100AQI
14th March 2025
93AQI
15th March 2025
93AQI
16th March 2025
101AQI
17th March 2025
108AQI
18th March 2025
119AQI
19th March 2025
124AQI
20th March 2025
147AQI
21st March 2025
121AQI
22nd March 2025
170AQI
23rd March 2025
171AQI
24th March 2025
116AQI
25th March 2025
182AQI
26th March 2025
151AQI
27th March 2025
100AQI
28th March 2025
83AQI
29th March 2025
72AQI
30th March 2025
72AQI
31st March 2025
115AQI
1st April 2025
126AQI
2nd April 2025
111AQI
3rd April 2025
140AQI
4th April 2025
134AQI
5th April 2025
102AQI
6th April 2025
135AQI
7th April 2025
98AQI
8th April 2025
123AQI
9th April 2025
140AQI
10th April 2025
133AQI
11th April 2025
140AQI
12th April 2025
108AQI
13th April 2025
77AQI
14th April 2025
74AQI
15th April 2025
66AQI
16th April 2025
57AQI
17th April 2025
92AQI
18th April 2025
65AQI
19th April 2025
70AQI
20th April 2025
91AQI
21st April 2025
99AQI
22nd April 2025
69AQI
23rd April 2025
71AQI
24th April 2025
104AQI
25th April 2025
64AQI
26th April 2025
84AQI
27th April 2025
56AQI
28th April 2025
100AQI
29th April 2025
88AQI
30th April 2025
83AQI
1st May 2025
65AQI
2nd May 2025
64AQI
3rd May 2025
60AQI
4th May 2025
51AQI
5th May 2025
68AQI
6th May 2025
60AQI
7th May 2025
77AQI
8th May 2025
69AQI
9th May 2025
74AQI
10th May 2025
64AQI
11th May 2025
73AQI
12th May 2025
82AQI
13th May 2025
82AQI
14th May 2025
94AQI
15th May 2025
84AQI
16th May 2025
68AQI
17th May 2025
64AQI
18th May 2025
66AQI
19th May 2025
58AQI
20th May 2025
64AQI
21st May 2025
72AQI
22nd May 2025
70AQI
23rd May 2025
61AQI
24th May 2025
58AQI
25th May 2025
54AQI
26th May 2025
69AQI
27th May 2025
73AQI
28th May 2025
89AQI
29th May 2025
76AQI
30th May 2025
89AQI
31st May 2025
93AQI
1st June 2025
63AQI
2nd June 2025
83AQI
3rd June 2025
51AQI
4th June 2025
62AQI
5th June 2025
52AQI
6th June 2025
52AQI
7th June 2025
42AQI
8th June 2025
56AQI
9th June 2025
56AQI
10th June 2025
43AQI
11th June 2025
47AQI
12th June 2025
54AQI
13th June 2025
56AQI
14th June 2025
54AQI
15th June 2025
68AQI
16th June 2025
59AQI
17th June 2025
57AQI
18th June 2025
62AQI
19th June 2025
63AQI
20th June 2025
56AQI
21st June 2025
40AQI
22nd June 2025
32AQI
23rd June 2025
48AQI
24th June 2025
57AQI
25th June 2025
63AQI
26th June 2025
57AQI
27th June 2025
64AQI
28th June 2025
65AQI
29th June 2025
67AQI
30th June 2025
53AQI
1st July 2025
55AQI
2nd July 2025
54AQI
3rd July 2025
58AQI

126AQI

112AQI

120AQI

97AQI

71AQI

56AQI

56AQI

No. of days

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

202596AQI

4
20
7
11
15
2
10
14
7
18
12
31
6
24
3
6
101
61
16

Highest AQI recorded in

January

126AQI

Lowest AQI recorded in

July

56AQI

202486AQI

7
19
5
10
8
9
2
1
18
12
10
12
5
3
11
19
1
15
15
12
10
9
17
14
23
7
3
21
6
1
9
16
5
24
7
82
164
90
25
5

Highest AQI recorded in

April

131AQI

Lowest AQI recorded in

September

44AQI

202387AQI

1
16
9
4
1
8
14
6
8
15
7
1
1
12
10
5
1
1
4
25
1
1
11
19
19
12
23
8
21
9
5
14
10
2
2
12
8
3
1
12
16
3
87
155
83
30
4
2

Highest AQI recorded in

March

126AQI

Lowest AQI recorded in

August

40AQI

202282AQI

5
19
7
5
14
2
1
22
7
1
2
6
6
1
6
23
2
15
15
15
8
2
2
19
8
2
10
18
3
3
12
12
3
1
20
6
4
74
144
71
17
1

Highest AQI recorded in

January

131AQI

Lowest AQI recorded in

July

45AQI

202197AQI

13
11
6
1
13
9
6
6
16
7
1
1
1
11
12
5
1
2
16
12
1
8
21
1
3
27
1
7
12
2
8
22
22
7
2
1
10
14
5
1
16
10
2
31
189
95
34
3
1

Highest AQI recorded in

March

137AQI

Lowest AQI recorded in

June

63AQI

202087AQI

7
6
2
1
5
4
8
1
5
12
1
11
17
2
5
22
4
15
16
11
16
3
6
16
6
3
1
13
14
2
13
16
2
56
133
56
12
8
1

Highest AQI recorded in

April

192AQI

Lowest AQI recorded in

August

53AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2021(Avg.)
97AQI
Least Polluted Year Recorded
2022(Avg.)
82AQI

Institute Of Posts And Telecommunications's annual 2025 AQI (96) shows an average percentage change of 9.9% (worsened AQI) compared to previous years: 2020 (87), 2021 (97), 2022 (82), 2023 (87), 2024 (86).