Tongjin, Gyeonggi, South Korea 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+
September Air Quality Analysis
Tongjin, Gyeonggi, South Korea
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
30th Sep 2022
97AQILowest AQI recorded on
25th Sep 2021
19AQISame Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 41 of Good air quality, showing improvement over 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Tongjin, Gyeonggi, South Korea
AQI
Day
Night
.
6 AM17th Sep 2025
7 PM
5 AM18th Sep 2025
Day time
Avg. Highest Time
6AM17th Sep
52AQI
Avg. Lowest Time
4PM17th Sep
19AQI
Night time
Avg. Highest Time
2AM18th Sep
49AQI
Avg. Lowest Time
7PM17th Sep
21AQI
In the last 24 hours,
Tongjin's AQI reached its highest point of 52 at 6 AM during the Day, while the lowest point, 19, was recorded at 4 PM during the Day between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Tongjin, Gyeonggi, South Korea
AugSep
19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th
Day
Night
19th Aug 2025476 AMAQI
19th Aug 2025467 AMAQI
19th Aug 2025488 AMAQI
19th Aug 2025399 AMAQI
19th Aug 20254010 AMAQI
19th Aug 20253611 AMAQI
19th Aug 20254512 PMAQI
19th Aug 2025461 PMAQI
19th Aug 2025462 PMAQI
19th Aug 2025363 PMAQI
19th Aug 2025354 PMAQI
19th Aug 2025395 PMAQI
19th Aug 2025296 PMAQI
19th Aug 2025357 PMAQI
19th Aug 2025408 PMAQI
19th Aug 2025409 PMAQI
19th Aug 20254010 PMAQI
19th Aug 20254111 PMAQI
20th Aug 20254412 AMAQI
20th Aug 2025471 AMAQI
20th Aug 2025482 AMAQI
20th Aug 2025483 AMAQI
20th Aug 2025474 AMAQI
20th Aug 2025485 AMAQI
27°C24/31°C
20th Aug 2025476 AMAQI
20th Aug 2025477 AMAQI
20th Aug 2025478 AMAQI
20th Aug 2025349 AMAQI
20th Aug 20253910 AMAQI
20th Aug 20254311 AMAQI
20th Aug 20254712 PMAQI
20th Aug 2025431 PMAQI
20th Aug 2025402 PMAQI
20th Aug 2025413 PMAQI
20th Aug 2025554 PMAQI
20th Aug 2025395 PMAQI
20th Aug 2025456 PMAQI
20th Aug 2025507 PMAQI
20th Aug 2025508 PMAQI
20th Aug 2025489 PMAQI
20th Aug 20254710 PMAQI
20th Aug 20254811 PMAQI
21st Aug 20254712 AMAQI
21st Aug 2025471 AMAQI
21st Aug 2025472 AMAQI
21st Aug 2025473 AMAQI
21st Aug 2025464 AMAQI
21st Aug 2025465 AMAQI
27°C23/32°C
21st Aug 2025466 AMAQI
21st Aug 2025467 AMAQI
21st Aug 2025468 AMAQI
21st Aug 2025509 AMAQI
21st Aug 20255010 AMAQI
21st Aug 20254611 AMAQI
21st Aug 20254512 PMAQI
21st Aug 2025471 PMAQI
21st Aug 2025472 PMAQI
21st Aug 2025463 PMAQI
21st Aug 2025444 PMAQI
21st Aug 2025425 PMAQI
21st Aug 2025376 PMAQI
21st Aug 2025407 PMAQI
21st Aug 2025488 PMAQI
21st Aug 2025469 PMAQI
21st Aug 20254610 PMAQI
21st Aug 20254411 PMAQI
22nd Aug 20254312 AMAQI
22nd Aug 2025471 AMAQI
22nd Aug 2025482 AMAQI
22nd Aug 2025473 AMAQI
22nd Aug 2025484 AMAQI
22nd Aug 2025485 AMAQI
28°C25/33°C
22nd Aug 2025476 AMAQI
22nd Aug 2025477 AMAQI
22nd Aug 2025488 AMAQI
22nd Aug 2025419 AMAQI
22nd Aug 20254810 AMAQI
22nd Aug 20255011 AMAQI
22nd Aug 20255212 PMAQI
22nd Aug 2025531 PMAQI
22nd Aug 2025522 PMAQI
22nd Aug 2025523 PMAQI
22nd Aug 2025494 PMAQI
22nd Aug 2025405 PMAQI
22nd Aug 2025376 PMAQI
22nd Aug 2025437 PMAQI
22nd Aug 2025458 PMAQI
22nd Aug 2025439 PMAQI
22nd Aug 20254310 PMAQI
22nd Aug 20254211 PMAQI
23rd Aug 20254512 AMAQI
23rd Aug 2025471 AMAQI
23rd Aug 2025472 AMAQI
23rd Aug 2025473 AMAQI
23rd Aug 2025484 AMAQI
23rd Aug 2025485 AMAQI
28°C25/32°C
23rd Aug 2025486 AMAQI
23rd Aug 2025487 AMAQI
23rd Aug 2025488 AMAQI
23rd Aug 2025399 AMAQI
23rd Aug 20253810 AMAQI
23rd Aug 20254311 AMAQI
23rd Aug 20254412 PMAQI
23rd Aug 2025451 PMAQI
23rd Aug 2025502 PMAQI
23rd Aug 2025473 PMAQI
23rd Aug 2025544 PMAQI
23rd Aug 2025535 PMAQI
23rd Aug 2025516 PMAQI
23rd Aug 2025567 PMAQI
23rd Aug 2025538 PMAQI
23rd Aug 2025519 PMAQI
23rd Aug 20255210 PMAQI
23rd Aug 20255011 PMAQI
24th Aug 20255112 AMAQI
24th Aug 2025481 AMAQI
24th Aug 2025472 AMAQI
24th Aug 2025473 AMAQI
24th Aug 2025484 AMAQI
24th Aug 2025475 AMAQI
28°C24/33°C
24th Aug 2025476 AMAQI
24th Aug 2025477 AMAQI
24th Aug 2025488 AMAQI
24th Aug 2025539 AMAQI
24th Aug 20255610 AMAQI
24th Aug 20255711 AMAQI
24th Aug 20255612 PMAQI
24th Aug 2025571 PMAQI
24th Aug 2025562 PMAQI
24th Aug 2025553 PMAQI
24th Aug 2025514 PMAQI
24th Aug 2025525 PMAQI
24th Aug 2025446 PMAQI
24th Aug 2025477 PMAQI
24th Aug 2025508 PMAQI
24th Aug 2025479 PMAQI
24th Aug 20254810 PMAQI
24th Aug 20254911 PMAQI
25th Aug 20255012 AMAQI
25th Aug 2025481 AMAQI
25th Aug 2025502 AMAQI
25th Aug 2025503 AMAQI
25th Aug 2025514 AMAQI
25th Aug 2025515 AMAQI
29°C25/33°C
25th Aug 2025516 AMAQI
25th Aug 2025517 AMAQI
25th Aug 2025528 AMAQI
25th Aug 2025499 AMAQI
25th Aug 20254910 AMAQI
25th Aug 20254611 AMAQI
25th Aug 20255012 PMAQI
25th Aug 2025491 PMAQI
25th Aug 2025542 PMAQI
25th Aug 2025523 PMAQI
25th Aug 2025494 PMAQI
25th Aug 2025465 PMAQI
25th Aug 2025456 PMAQI
25th Aug 2025467 PMAQI
25th Aug 2025418 PMAQI
25th Aug 2025469 PMAQI
25th Aug 20254510 PMAQI
25th Aug 20254311 PMAQI
26th Aug 20254212 AMAQI
26th Aug 2025501 AMAQI
26th Aug 2025502 AMAQI
26th Aug 2025503 AMAQI
26th Aug 2025514 AMAQI
26th Aug 2025515 AMAQI
29°C25/34°C
26th Aug 2025516 AMAQI
26th Aug 2025517 AMAQI
26th Aug 2025518 AMAQI
26th Aug 2025339 AMAQI
26th Aug 20252810 AMAQI
26th Aug 20252611 AMAQI
26th Aug 20253212 PMAQI
26th Aug 2025371 PMAQI
26th Aug 2025362 PMAQI
26th Aug 2025363 PMAQI
26th Aug 2025334 PMAQI
26th Aug 2025395 PMAQI
26th Aug 2025496 PMAQI
26th Aug 2025417 PMAQI
26th Aug 2025508 PMAQI
26th Aug 2025459 PMAQI
26th Aug 20254810 PMAQI
26th Aug 20254611 PMAQI
27th Aug 20255112 AMAQI
27th Aug 2025511 AMAQI
27th Aug 2025502 AMAQI
27th Aug 2025493 AMAQI
27th Aug 2025474 AMAQI
27th Aug 2025465 AMAQI
26°C24/30°C
27th Aug 2025456 AMAQI
27th Aug 2025457 AMAQI
27th Aug 2025458 AMAQI
27th Aug 2025419 AMAQI
27th Aug 20255010 AMAQI
27th Aug 20255111 AMAQI
27th Aug 20255612 PMAQI
27th Aug 2025521 PMAQI
27th Aug 2025442 PMAQI
27th Aug 2025433 PMAQI
27th Aug 2025444 PMAQI
27th Aug 2025495 PMAQI
27th Aug 2025526 PMAQI
27th Aug 2025477 PMAQI
27th Aug 2025488 PMAQI
27th Aug 2025559 PMAQI
27th Aug 20255410 PMAQI
27th Aug 20255211 PMAQI
28th Aug 20255612 AMAQI
28th Aug 2025521 AMAQI
28th Aug 2025492 AMAQI
28th Aug 2025483 AMAQI
28th Aug 2025494 AMAQI
28th Aug 2025485 AMAQI
26°C22/32°C
28th Aug 2025486 AMAQI
28th Aug 2025487 AMAQI
28th Aug 2025488 AMAQI
28th Aug 2025549 AMAQI
28th Aug 20255310 AMAQI
28th Aug 20255611 AMAQI
28th Aug 20255612 PMAQI
28th Aug 2025581 PMAQI
28th Aug 2025562 PMAQI
28th Aug 2025533 PMAQI
28th Aug 2025554 PMAQI
28th Aug 2025555 PMAQI
28th Aug 2025546 PMAQI
28th Aug 2025517 PMAQI
28th Aug 2025548 PMAQI
28th Aug 2025529 PMAQI
28th Aug 20254910 PMAQI
28th Aug 20255111 PMAQI
29th Aug 20255012 AMAQI
29th Aug 2025511 AMAQI
29th Aug 2025522 AMAQI
29th Aug 2025523 AMAQI
29th Aug 2025524 AMAQI
29th Aug 2025525 AMAQI
27°C24/31°C
29th Aug 2025526 AMAQI
29th Aug 2025527 AMAQI
29th Aug 2025528 AMAQI
29th Aug 2025379 AMAQI
29th Aug 20253810 AMAQI
29th Aug 20254511 AMAQI
29th Aug 20253912 PMAQI
29th Aug 2025411 PMAQI
29th Aug 2025372 PMAQI
29th Aug 2025403 PMAQI
29th Aug 2025374 PMAQI
29th Aug 2025375 PMAQI
29th Aug 2025336 PMAQI
29th Aug 2025447 PMAQI
29th Aug 2025418 PMAQI
29th Aug 2025479 PMAQI
29th Aug 20254510 PMAQI
29th Aug 20254811 PMAQI
30th Aug 20255112 AMAQI
30th Aug 2025511 AMAQI
30th Aug 2025522 AMAQI
30th Aug 2025513 AMAQI
30th Aug 2025514 AMAQI
30th Aug 2025505 AMAQI
27°C24/32°C
30th Aug 2025516 AMAQI
30th Aug 2025517 AMAQI
30th Aug 2025508 AMAQI
30th Aug 2025289 AMAQI
30th Aug 20254110 AMAQI
30th Aug 20254911 AMAQI
30th Aug 20253912 PMAQI
30th Aug 2025361 PMAQI
30th Aug 2025342 PMAQI
30th Aug 2025343 PMAQI
30th Aug 2025414 PMAQI
30th Aug 2025305 PMAQI
30th Aug 2025396 PMAQI
30th Aug 2025467 PMAQI
30th Aug 2025448 PMAQI
30th Aug 2025439 PMAQI
30th Aug 20254410 PMAQI
30th Aug 20254311 PMAQI
31st Aug 20254612 AMAQI
31st Aug 2025511 AMAQI
31st Aug 2025512 AMAQI
31st Aug 2025523 AMAQI
31st Aug 2025504 AMAQI
31st Aug 2025485 AMAQI
27°C24/32°C
31st Aug 2025486 AMAQI
31st Aug 2025487 AMAQI
31st Aug 2025488 AMAQI
31st Aug 2025429 AMAQI
31st Aug 20254210 AMAQI
31st Aug 20255111 AMAQI
31st Aug 20255212 PMAQI
31st Aug 2025521 PMAQI
31st Aug 2025512 PMAQI
31st Aug 2025523 PMAQI
31st Aug 2025514 PMAQI
31st Aug 2025465 PMAQI
31st Aug 2025546 PMAQI
31st Aug 2025487 PMAQI
31st Aug 2025548 PMAQI
31st Aug 2025569 PMAQI
31st Aug 20255310 PMAQI
31st Aug 20255111 PMAQI
1st Sep 20255212 AMAQI
1st Sep 2025491 AMAQI
1st Sep 2025492 AMAQI
1st Sep 2025493 AMAQI
1st Sep 2025504 AMAQI
1st Sep 2025505 AMAQI
27°C23/33°C
1st Sep 2025506 AMAQI
1st Sep 2025507 AMAQI
1st Sep 2025518 AMAQI
1st Sep 2025289 AMAQI
1st Sep 20252810 AMAQI
1st Sep 20252411 AMAQI
1st Sep 20252912 PMAQI
1st Sep 2025301 PMAQI
1st Sep 2025302 PMAQI
1st Sep 2025333 PMAQI
1st Sep 2025334 PMAQI
1st Sep 2025285 PMAQI
1st Sep 2025346 PMAQI
1st Sep 2025387 PMAQI
1st Sep 2025368 PMAQI
1st Sep 2025439 PMAQI
1st Sep 20254310 PMAQI
1st Sep 20254211 PMAQI
2nd Sep 20254712 AMAQI
2nd Sep 2025511 AMAQI
2nd Sep 2025492 AMAQI
2nd Sep 2025493 AMAQI
2nd Sep 2025474 AMAQI
2nd Sep 2025465 AMAQI
25°C22/28°C
2nd Sep 2025466 AMAQI
2nd Sep 2025467 AMAQI
2nd Sep 2025468 AMAQI
2nd Sep 2025439 AMAQI
2nd Sep 20254910 AMAQI
2nd Sep 20254411 AMAQI
2nd Sep 20255012 PMAQI
2nd Sep 2025401 PMAQI
2nd Sep 2025422 PMAQI
2nd Sep 2025433 PMAQI
2nd Sep 2025504 PMAQI
2nd Sep 2025515 PMAQI
2nd Sep 2025496 PMAQI
2nd Sep 2025517 PMAQI
2nd Sep 2025478 PMAQI
2nd Sep 2025529 PMAQI
2nd Sep 20255410 PMAQI
2nd Sep 20255211 PMAQI
3rd Sep 20255412 AMAQI
3rd Sep 2025471 AMAQI
3rd Sep 2025472 AMAQI
3rd Sep 2025483 AMAQI
3rd Sep 2025464 AMAQI
3rd Sep 2025485 AMAQI
25°C22/30°C
3rd Sep 2025486 AMAQI
3rd Sep 2025497 AMAQI
3rd Sep 2025498 AMAQI
3rd Sep 2025509 AMAQI
3rd Sep 20255210 AMAQI
3rd Sep 20255311 AMAQI
3rd Sep 20255212 PMAQI
3rd Sep 2025511 PMAQI
3rd Sep 2025462 PMAQI
3rd Sep 2025483 PMAQI
3rd Sep 2025474 PMAQI
3rd Sep 2025485 PMAQI
3rd Sep 2025546 PMAQI
3rd Sep 2025497 PMAQI
3rd Sep 2025528 PMAQI
3rd Sep 2025509 PMAQI
3rd Sep 20255110 PMAQI
3rd Sep 20254811 PMAQI
4th Sep 20255212 AMAQI
4th Sep 2025471 AMAQI
4th Sep 2025492 AMAQI
4th Sep 2025493 AMAQI
4th Sep 2025514 AMAQI
4th Sep 2025515 AMAQI
26°C22/31°C
4th Sep 2025516 AMAQI
4th Sep 2025507 AMAQI
4th Sep 2025508 AMAQI
4th Sep 2025369 AMAQI
4th Sep 20253210 AMAQI
4th Sep 20252811 AMAQI
4th Sep 20252612 PMAQI
4th Sep 2025301 PMAQI
4th Sep 2025302 PMAQI
4th Sep 2025303 PMAQI
4th Sep 2025344 PMAQI
4th Sep 2025355 PMAQI
4th Sep 2025356 PMAQI
4th Sep 2025347 PMAQI
4th Sep 2025278 PMAQI
4th Sep 2025289 PMAQI
4th Sep 20252110 PMAQI
4th Sep 20252111 PMAQI
5th Sep 20252312 AMAQI
5th Sep 2025331 AMAQI
5th Sep 2025512 AMAQI
5th Sep 2025513 AMAQI
5th Sep 2025494 AMAQI
5th Sep 2025475 AMAQI
24°C22/28°C
5th Sep 2025486 AMAQI
5th Sep 2025487 AMAQI
5th Sep 2025478 AMAQI
5th Sep 2025259 AMAQI
5th Sep 20253210 AMAQI
5th Sep 20253211 AMAQI
5th Sep 20252412 PMAQI
5th Sep 2025261 PMAQI
5th Sep 2025272 PMAQI
5th Sep 2025333 PMAQI
5th Sep 2025424 PMAQI
5th Sep 2025335 PMAQI
5th Sep 2025346 PMAQI
5th Sep 2025347 PMAQI
5th Sep 2025388 PMAQI
5th Sep 2025429 PMAQI
5th Sep 20254410 PMAQI
5th Sep 20254411 PMAQI
6th Sep 20253812 AMAQI
6th Sep 2025371 AMAQI
6th Sep 2025392 AMAQI
6th Sep 2025373 AMAQI
6th Sep 2025414 AMAQI
6th Sep 2025405 AMAQI
27°C22/32°C
6th Sep 2025416 AMAQI
6th Sep 2025407 AMAQI
6th Sep 2025398 AMAQI
6th Sep 2025459 AMAQI
6th Sep 20254810 AMAQI
6th Sep 20254711 AMAQI
6th Sep 20254212 PMAQI
6th Sep 2025351 PMAQI
6th Sep 2025272 PMAQI
6th Sep 2025293 PMAQI
6th Sep 2025334 PMAQI
6th Sep 2025425 PMAQI
6th Sep 2025396 PMAQI
6th Sep 2025357 PMAQI
6th Sep 2025328 PMAQI
6th Sep 2025419 PMAQI
6th Sep 20254110 PMAQI
6th Sep 20253511 PMAQI
7th Sep 20253612 AMAQI
7th Sep 2025411 AMAQI
7th Sep 2025412 AMAQI
7th Sep 2025403 AMAQI
7th Sep 2025404 AMAQI
7th Sep 2025405 AMAQI
27°C24/31°C
7th Sep 2025406 AMAQI
7th Sep 2025417 AMAQI
7th Sep 2025428 AMAQI
7th Sep 2025359 AMAQI
7th Sep 20252810 AMAQI
7th Sep 20253411 AMAQI
7th Sep 20253412 PMAQI
7th Sep 2025371 PMAQI
7th Sep 2025432 PMAQI
7th Sep 2025453 PMAQI
7th Sep 2025474 PMAQI
7th Sep 2025465 PMAQI
7th Sep 2025356 PMAQI
7th Sep 2025467 PMAQI
7th Sep 2025438 PMAQI
7th Sep 2025459 PMAQI
7th Sep 20254110 PMAQI
7th Sep 20254211 PMAQI
8th Sep 20254012 AMAQI
8th Sep 2025381 AMAQI
8th Sep 2025392 AMAQI
8th Sep 2025393 AMAQI
8th Sep 2025384 AMAQI
8th Sep 2025395 AMAQI
25°C23/29°C
8th Sep 2025386 AMAQI
8th Sep 2025397 AMAQI
8th Sep 2025398 AMAQI
8th Sep 2025479 AMAQI
8th Sep 20254810 AMAQI
8th Sep 20254811 AMAQI
8th Sep 20255312 PMAQI
8th Sep 2025531 PMAQI
8th Sep 2025532 PMAQI
8th Sep 2025543 PMAQI
8th Sep 2025554 PMAQI
8th Sep 2025565 PMAQI
8th Sep 2025556 PMAQI
8th Sep 2025617 PMAQI
8th Sep 2025568 PMAQI
8th Sep 2025569 PMAQI
8th Sep 20255610 PMAQI
8th Sep 20255611 PMAQI
9th Sep 20254812 AMAQI
9th Sep 2025411 AMAQI
9th Sep 2025412 AMAQI
9th Sep 2025423 AMAQI
9th Sep 2025414 AMAQI
9th Sep 2025425 AMAQI
24°C21/29°C
9th Sep 2025436 AMAQI
9th Sep 2025427 AMAQI
9th Sep 2025438 AMAQI
9th Sep 2025569 AMAQI
9th Sep 20255610 AMAQI
9th Sep 20255611 AMAQI
9th Sep 20255612 PMAQI
9th Sep 2025591 PMAQI
9th Sep 2025612 PMAQI
9th Sep 2025563 PMAQI
9th Sep 2025574 PMAQI
9th Sep 2025585 PMAQI
9th Sep 2025576 PMAQI
9th Sep 2025617 PMAQI
9th Sep 2025598 PMAQI
9th Sep 2025589 PMAQI
9th Sep 20255610 PMAQI
9th Sep 20255411 PMAQI
10th Sep 20255312 AMAQI
10th Sep 2025471 AMAQI
10th Sep 2025452 AMAQI
10th Sep 2025453 AMAQI
10th Sep 2025494 AMAQI
10th Sep 2025515 AMAQI
24°C21/28°C
10th Sep 2025496 AMAQI
10th Sep 2025517 AMAQI
10th Sep 2025508 AMAQI
10th Sep 2025539 AMAQI
10th Sep 20255410 AMAQI
10th Sep 20255911 AMAQI
10th Sep 20255312 PMAQI
10th Sep 2025511 PMAQI
10th Sep 2025422 PMAQI
10th Sep 2025453 PMAQI
10th Sep 2025424 PMAQI
10th Sep 2025405 PMAQI
10th Sep 2025386 PMAQI
10th Sep 2025477 PMAQI
10th Sep 2025518 PMAQI
10th Sep 2025529 PMAQI
10th Sep 20255010 PMAQI
10th Sep 20255411 PMAQI
11th Sep 20254912 AMAQI
11th Sep 2025481 AMAQI
11th Sep 2025482 AMAQI
11th Sep 2025493 AMAQI
11th Sep 2025514 AMAQI
11th Sep 2025515 AMAQI
25°C21/31°C
11th Sep 2025506 AMAQI
11th Sep 2025517 AMAQI
11th Sep 2025518 AMAQI
11th Sep 2025509 AMAQI
11th Sep 20255010 AMAQI
11th Sep 20255011 AMAQI
11th Sep 20254912 PMAQI
11th Sep 2025361 PMAQI
11th Sep 2025342 PMAQI
11th Sep 2025393 PMAQI
11th Sep 2025414 PMAQI
11th Sep 2025385 PMAQI
11th Sep 2025436 PMAQI
11th Sep 2025457 PMAQI
11th Sep 2025548 PMAQI
11th Sep 2025549 PMAQI
11th Sep 20255410 PMAQI
11th Sep 20255511 PMAQI
12th Sep 20255212 AMAQI
12th Sep 2025511 AMAQI
12th Sep 2025502 AMAQI
12th Sep 2025513 AMAQI
12th Sep 2025484 AMAQI
12th Sep 2025505 AMAQI
26°C21/31°C
12th Sep 2025516 AMAQI
12th Sep 2025507 AMAQI
12th Sep 2025518 AMAQI
12th Sep 2025479 AMAQI
12th Sep 20254110 AMAQI
12th Sep 20253111 AMAQI
12th Sep 20253812 PMAQI
12th Sep 2025401 PMAQI
12th Sep 2025452 PMAQI
12th Sep 2025453 PMAQI
12th Sep 2025444 PMAQI
12th Sep 2025435 PMAQI
12th Sep 2025386 PMAQI
12th Sep 2025417 PMAQI
12th Sep 2025468 PMAQI
12th Sep 2025469 PMAQI
12th Sep 20254110 PMAQI
12th Sep 20254411 PMAQI
13th Sep 20254412 AMAQI
13th Sep 2025511 AMAQI
13th Sep 2025492 AMAQI
13th Sep 2025513 AMAQI
13th Sep 2025504 AMAQI
13th Sep 2025505 AMAQI
23°C20/27°C
13th Sep 2025506 AMAQI
13th Sep 2025497 AMAQI
13th Sep 2025498 AMAQI
13th Sep 2025179 AMAQI
13th Sep 20252310 AMAQI
13th Sep 20252611 AMAQI
13th Sep 20252312 PMAQI
13th Sep 2025201 PMAQI
13th Sep 2025192 PMAQI
13th Sep 2025223 PMAQI
13th Sep 2025254 PMAQI
13th Sep 2025255 PMAQI
13th Sep 2025306 PMAQI
13th Sep 2025277 PMAQI
13th Sep 2025388 PMAQI
13th Sep 2025439 PMAQI
13th Sep 20254210 PMAQI
13th Sep 20254411 PMAQI
14th Sep 20254412 AMAQI
14th Sep 2025501 AMAQI
14th Sep 2025492 AMAQI
14th Sep 2025483 AMAQI
14th Sep 2025464 AMAQI
14th Sep 2025445 AMAQI
22°C20/25°C
14th Sep 2025446 AMAQI
14th Sep 2025437 AMAQI
14th Sep 2025438 AMAQI
14th Sep 2025369 AMAQI
14th Sep 20253810 AMAQI
14th Sep 20252611 AMAQI
14th Sep 20252912 PMAQI
14th Sep 2025381 PMAQI
14th Sep 2025382 PMAQI
14th Sep 2025283 PMAQI
14th Sep 2025304 PMAQI
14th Sep 2025425 PMAQI
14th Sep 2025406 PMAQI
14th Sep 2025467 PMAQI
14th Sep 2025488 PMAQI
14th Sep 2025479 PMAQI
14th Sep 20254610 PMAQI
14th Sep 20254611 PMAQI
15th Sep 20254412 AMAQI
15th Sep 2025441 AMAQI
15th Sep 2025462 AMAQI
15th Sep 2025463 AMAQI
15th Sep 2025444 AMAQI
15th Sep 2025445 AMAQI
24°C21/28°C
15th Sep 2025446 AMAQI
15th Sep 2025447 AMAQI
15th Sep 2025448 AMAQI
15th Sep 2025509 AMAQI
15th Sep 20254410 AMAQI
15th Sep 20255011 AMAQI
15th Sep 20254412 PMAQI
15th Sep 2025481 PMAQI
15th Sep 2025392 PMAQI
15th Sep 2025373 PMAQI
15th Sep 2025394 PMAQI
15th Sep 2025405 PMAQI
15th Sep 2025456 PMAQI
15th Sep 2025527 PMAQI
15th Sep 2025508 PMAQI
15th Sep 2025539 PMAQI
15th Sep 20255710 PMAQI
15th Sep 20255711 PMAQI
16th Sep 20255312 AMAQI
16th Sep 2025461 AMAQI
16th Sep 2025452 AMAQI
16th Sep 2025463 AMAQI
16th Sep 2025454 AMAQI
16th Sep 2025455 AMAQI
25°C21/30°C
16th Sep 2025466 AMAQI
16th Sep 2025467 AMAQI
16th Sep 2025458 AMAQI
16th Sep 2025599 AMAQI
16th Sep 20256110 AMAQI
16th Sep 20256311 AMAQI
16th Sep 20256412 PMAQI
16th Sep 2025621 PMAQI
16th Sep 2025622 PMAQI
16th Sep 2025603 PMAQI
16th Sep 2025554 PMAQI
16th Sep 2025385 PMAQI
16th Sep 2025226 PMAQI
16th Sep 2025197 PMAQI
16th Sep 2025288 PMAQI
16th Sep 2025339 PMAQI
16th Sep 20253310 PMAQI
16th Sep 20253111 PMAQI
17th Sep 20253712 AMAQI
17th Sep 2025481 AMAQI
17th Sep 2025472 AMAQI
17th Sep 2025473 AMAQI
17th Sep 2025494 AMAQI
17th Sep 2025525 AMAQI
24°C22/28°C
17th Sep 2025526 AMAQI
17th Sep 2025527 AMAQI
17th Sep 2025528 AMAQI
17th Sep 2025349 AMAQI
17th Sep 20252910 AMAQI
17th Sep 20252811 AMAQI
17th Sep 20252912 PMAQI
17th Sep 2025281 PMAQI
17th Sep 2025222 PMAQI
17th Sep 2025213 PMAQI
17th Sep 2025194 PMAQI
17th Sep 2025205 PMAQI
17th Sep 2025226 PMAQI
17th Sep 2025217 PMAQI
17th Sep 2025328 PMAQI
17th Sep 2025399 PMAQI
17th Sep 20253210 PMAQI
17th Sep 20253211 PMAQI
18th Sep 20253412 AMAQI
18th Sep 2025471 AMAQI
18th Sep 2025492 AMAQI
18th Sep 2025493 AMAQI
18th Sep 2025474 AMAQI
18th Sep 2025455 AMAQI
22°C20/25°C
18th Sep 2025446 AMAQI
6 AM18th Sep 2025457 AMAQI
18th Sep 2025448 AMAQI
18th Sep 2025249 AMAQI
18th Sep 20251710 AMAQI
18th Sep 20251711 AMAQI
18th Sep 20251612 PMAQI
12 PM18th Sep 2025141 PMAQI
18th Sep 2025142 PMAQI
18th Sep 2025143 PMAQI
18th Sep 2025144 PMAQI
7 PM
12 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 8 AM
47AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
9 AM - 6 PM
42AQI
10 hours / Day
300 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 47), while the lowest AQI was between 9 AM to 6 PM (Avg. 42).
Night time
Avg. Highest Time
12 AM - 5 AM
47AQI
6 hours / Day
180 hours / Month
Avg. Lowest Time
8 PM
45AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 5 AM (Avg. 47), while the lowest AQI was between 8 PM to 8 PM (Avg. 45).
2025 Days Vs Air Quality
Tongjin, Gyeonggi, South Korea
2025
30%
77
63%
165
7%
17
0.3%
1
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Good
77 DaysModerate
165 DaysPoor
17 DaysUnhealthy
1 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 30%
Health Risk Level:
High
In 2025, 30% of 261 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Tongjin, Gyeonggi, South Korea
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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
77AQI
77AQI
2nd January 2025
67AQI
67AQI
3rd January 2025
64AQI
64AQI
4th January 2025
66AQI
66AQI
5th January 2025
74AQI
74AQI
6th January 2025
103AQI
103AQI
7th January 2025
61AQI
61AQI
8th January 2025
74AQI
74AQI
9th January 2025
43AQI
43AQI
10th January 2025
63AQI
63AQI
11th January 2025
62AQI
62AQI
12th January 2025
86AQI
86AQI
13th January 2025
96AQI
96AQI
14th January 2025
106AQI
106AQI
15th January 2025
59AQI
59AQI
16th January 2025
77AQI
77AQI
17th January 2025
94AQI
94AQI
18th January 2025
87AQI
87AQI
19th January 2025
100AQI
100AQI
20th January 2025
133AQI
133AQI
21st January 2025
146AQI
146AQI
22nd January 2025
153AQI
153AQI
23rd January 2025
137AQI
137AQI
24th January 2025
107AQI
107AQI
25th January 2025
77AQI
77AQI
26th January 2025
57AQI
57AQI
27th January 2025
65AQI
65AQI
28th January 2025
58AQI
58AQI
29th January 2025
63AQI
63AQI
30th January 2025
56AQI
56AQI
31st January 2025
74AQI
74AQI
1st February 2025
76AQI
76AQI
2nd February 2025
82AQI
82AQI
3rd February 2025
54AQI
54AQI
4th February 2025
55AQI
55AQI
5th February 2025
50AQI
50AQI
6th February 2025
59AQI
59AQI
7th February 2025
51AQI
51AQI
8th February 2025
53AQI
53AQI
9th February 2025
54AQI
54AQI
10th February 2025
60AQI
60AQI
11th February 2025
80AQI
80AQI
12th February 2025
84AQI
84AQI
13th February 2025
55AQI
55AQI
14th February 2025
94AQI
94AQI
15th February 2025
61AQI
61AQI
16th February 2025
120AQI
120AQI
17th February 2025
54AQI
54AQI
18th February 2025
66AQI
66AQI
19th February 2025
51AQI
51AQI
20th February 2025
60AQI
60AQI
21st February 2025
59AQI
59AQI
22nd February 2025
61AQI
61AQI
23rd February 2025
58AQI
58AQI
24th February 2025
62AQI
62AQI
25th February 2025
58AQI
58AQI
26th February 2025
80AQI
80AQI
27th February 2025
60AQI
60AQI
28th February 2025
86AQI
86AQI
1st March 2025
111AQI
111AQI
2nd March 2025
84AQI
84AQI
3rd March 2025
60AQI
60AQI
4th March 2025
49AQI
49AQI
5th March 2025
39AQI
39AQI
6th March 2025
73AQI
73AQI
7th March 2025
94AQI
94AQI
8th March 2025
92AQI
92AQI
9th March 2025
108AQI
108AQI
10th March 2025
120AQI
120AQI
11th March 2025
115AQI
115AQI
12th March 2025
113AQI
113AQI
13th March 2025
98AQI
98AQI
14th March 2025
82AQI
82AQI
15th March 2025
56AQI
56AQI
16th March 2025
74AQI
74AQI
17th March 2025
64AQI
64AQI
18th March 2025
66AQI
66AQI
19th March 2025
82AQI
82AQI
20th March 2025
91AQI
91AQI
21st March 2025
108AQI
108AQI
22nd March 2025
110AQI
110AQI
23rd March 2025
118AQI
118AQI
24th March 2025
121AQI
121AQI
25th March 2025
132AQI
132AQI
26th March 2025
91AQI
91AQI
27th March 2025
90AQI
90AQI
28th March 2025
65AQI
65AQI
29th March 2025
51AQI
51AQI
30th March 2025
48AQI
48AQI
31st March 2025
59AQI
59AQI
1st April 2025
81AQI
81AQI
2nd April 2025
86AQI
86AQI
3rd April 2025
81AQI
81AQI
4th April 2025
90AQI
90AQI
5th April 2025
75AQI
75AQI
6th April 2025
70AQI
70AQI
7th April 2025
71AQI
71AQI
8th April 2025
82AQI
82AQI
9th April 2025
71AQI
71AQI
10th April 2025
78AQI
78AQI
11th April 2025
87AQI
87AQI
12th April 2025
67AQI
67AQI
13th April 2025
63AQI
63AQI
14th April 2025
48AQI
48AQI
15th April 2025
56AQI
56AQI
16th April 2025
62AQI
62AQI
17th April 2025
66AQI
66AQI
18th April 2025
79AQI
79AQI
19th April 2025
51AQI
51AQI
20th April 2025
57AQI
57AQI
21st April 2025
51AQI
51AQI
22nd April 2025
45AQI
45AQI
23rd April 2025
35AQI
35AQI
24th April 2025
57AQI
57AQI
25th April 2025
66AQI
66AQI
26th April 2025
55AQI
55AQI
27th April 2025
44AQI
44AQI
28th April 2025
58AQI
58AQI
29th April 2025
67AQI
67AQI
30th April 2025
60AQI
60AQI
1st May 2025
58AQI
58AQI
2nd May 2025
48AQI
48AQI
3rd May 2025
49AQI
49AQI
4th May 2025
45AQI
45AQI
5th May 2025
52AQI
52AQI
6th May 2025
42AQI
42AQI
7th May 2025
55AQI
55AQI
8th May 2025
64AQI
64AQI
9th May 2025
52AQI
52AQI
10th May 2025
53AQI
53AQI
11th May 2025
67AQI
67AQI
12th May 2025
68AQI
68AQI
13th May 2025
73AQI
73AQI
14th May 2025
75AQI
75AQI
15th May 2025
63AQI
63AQI
16th May 2025
52AQI
52AQI
17th May 2025
40AQI
40AQI
18th May 2025
57AQI
57AQI
19th May 2025
61AQI
61AQI
20th May 2025
42AQI
42AQI
21st May 2025
49AQI
49AQI
22nd May 2025
44AQI
44AQI
23rd May 2025
62AQI
62AQI
24th May 2025
46AQI
46AQI
25th May 2025
50AQI
50AQI
26th May 2025
61AQI
61AQI
27th May 2025
74AQI
74AQI
28th May 2025
77AQI
77AQI
29th May 2025
77AQI
77AQI
30th May 2025
68AQI
68AQI
31st May 2025
76AQI
76AQI
1st June 2025
82AQI
82AQI
2nd June 2025
93AQI
93AQI
3rd June 2025
75AQI
75AQI
4th June 2025
57AQI
57AQI
5th June 2025
59AQI
59AQI
6th June 2025
60AQI
60AQI
7th June 2025
72AQI
72AQI
8th June 2025
59AQI
59AQI
9th June 2025
66AQI
66AQI
10th June 2025
53AQI
53AQI
11th June 2025
51AQI
51AQI
12th June 2025
59AQI
59AQI
13th June 2025
72AQI
72AQI
14th June 2025
52AQI
52AQI
15th June 2025
57AQI
57AQI
16th June 2025
60AQI
60AQI
17th June 2025
61AQI
61AQI
18th June 2025
67AQI
67AQI
19th June 2025
64AQI
64AQI
20th June 2025
45AQI
45AQI
21st June 2025
54AQI
54AQI
22nd June 2025
62AQI
62AQI
23rd June 2025
64AQI
64AQI
24th June 2025
58AQI
58AQI
25th June 2025
49AQI
49AQI
26th June 2025
54AQI
54AQI
27th June 2025
62AQI
62AQI
28th June 2025
61AQI
61AQI
29th June 2025
49AQI
49AQI
30th June 2025
45AQI
45AQI
1st July 2025
45AQI
45AQI
2nd July 2025
40AQI
40AQI
3rd July 2025
53AQI
53AQI
4th July 2025
51AQI
51AQI
5th July 2025
48AQI
48AQI
6th July 2025
54AQI
54AQI
7th July 2025
66AQI
66AQI
8th July 2025
68AQI
68AQI
9th July 2025
57AQI
57AQI
10th July 2025
50AQI
50AQI
11th July 2025
51AQI
51AQI
12th July 2025
48AQI
48AQI
13th July 2025
60AQI
60AQI
14th July 2025
51AQI
51AQI
15th July 2025
42AQI
42AQI
16th July 2025
50AQI
50AQI
17th July 2025
38AQI
38AQI
18th July 2025
42AQI
42AQI
19th July 2025
32AQI
32AQI
20th July 2025
38AQI
38AQI
21st July 2025
40AQI
40AQI
22nd July 2025
40AQI
40AQI
23rd July 2025
46AQI
46AQI
24th July 2025
51AQI
51AQI
25th July 2025
57AQI
57AQI
26th July 2025
45AQI
45AQI
27th July 2025
41AQI
41AQI
28th July 2025
60AQI
60AQI
29th July 2025
66AQI
66AQI
30th July 2025
56AQI
56AQI
31st July 2025
57AQI
57AQI
1st August 2025
59AQI
59AQI
2nd August 2025
62AQI
62AQI
3rd August 2025
61AQI
61AQI
4th August 2025
48AQI
48AQI
5th August 2025
51AQI
51AQI
6th August 2025
44AQI
44AQI
7th August 2025
49AQI
49AQI
8th August 2025
54AQI
54AQI
9th August 2025
54AQI
54AQI
10th August 2025
50AQI
50AQI
11th August 2025
57AQI
57AQI
12th August 2025
47AQI
47AQI
13th August 2025
39AQI
39AQI
14th August 2025
40AQI
40AQI
15th August 2025
38AQI
38AQI
16th August 2025
38AQI
38AQI
17th August 2025
41AQI
41AQI
18th August 2025
51AQI
51AQI
19th August 2025
42AQI
42AQI
20th August 2025
46AQI
46AQI
21st August 2025
46AQI
46AQI
22nd August 2025
46AQI
46AQI
23rd August 2025
48AQI
48AQI
24th August 2025
50AQI
50AQI
25th August 2025
48AQI
48AQI
26th August 2025
44AQI
44AQI
27th August 2025
49AQI
49AQI
28th August 2025
52AQI
52AQI
29th August 2025
45AQI
45AQI
30th August 2025
44AQI
44AQI
31st August 2025
50AQI
50AQI
1st September 2025
40AQI
40AQI
2nd September 2025
48AQI
48AQI
3rd September 2025
49AQI
49AQI
4th September 2025
37AQI
37AQI
5th September 2025
36AQI
36AQI
6th September 2025
38AQI
38AQI
7th September 2025
40AQI
40AQI
8th September 2025
48AQI
48AQI
9th September 2025
52AQI
52AQI
10th September 2025
48AQI
48AQI
11th September 2025
48AQI
48AQI
12th September 2025
45AQI
45AQI
13th September 2025
37AQI
37AQI
14th September 2025
42AQI
42AQI
15th September 2025
46AQI
46AQI
16th September 2025
44AQI
44AQI
17th September 2025
41AQI
41AQI
18th September 2025
19th September 2025
20th September 2025
21st September 2025
22nd September 2025
23rd September 2025
24th September 2025
25th September 2025
26th September 2025
27th September 2025
28th September 2025
29th September 2025
30th September 2025
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025
83AQI
66AQI
86AQI
65AQI
58AQI
61AQI
50AQI
48AQI
43AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202563AQI
1
23
6
1
1
26
1
3
18
10
4
26
10
21
4
26
16
15
22
9
16
1
77
165
17
1
Highest AQI recorded in
March86AQI
Lowest AQI recorded in
September43AQI
202462AQI
5
17
9
9
12
7
1
5
20
6
2
25
3
11
20
5
25
23
8
11
20
24
6
18
13
8
21
1
4
26
1
125
213
27
1
Highest AQI recorded in
January83AQI
Lowest AQI recorded in
September40AQI
202370AQI
5
17
5
4
2
16
7
3
1
14
16
3
22
4
1
6
24
1
5
25
17
13
1
12
19
19
11
11
19
1
11
15
3
10
13
8
102
208
46
8
Highest AQI recorded in
February99AQI
Lowest AQI recorded in
September47AQI
202269AQI
22
7
2
1
14
4
3
6
17
8
6
20
4
7
22
2
15
15
8
17
2
1
19
10
15
13
3
4
19
6
1
5
19
7
88
189
41
6
Highest AQI recorded in
February92AQI
Lowest AQI recorded in
August35AQI
202167AQI
6
19
6
3
15
10
3
16
10
1
1
5
23
2
9
20
1
1
5
25
15
16
16
15
25
5
12
19
6
19
3
2
8
16
7
113
208
38
3
2
1
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
September36AQI
202064AQI
2
10
1
3
17
1
5
13
3
26
1
19
12
18
13
20
10
10
19
2
6
16
8
5
14
11
1
91
150
24
1
Highest AQI recorded in
December87AQI
Lowest AQI recorded in
September44AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2023(Avg.)
70AQILeast Polluted Year Recorded
2024(Avg.)
62AQITongjin's annual 2025 AQI (63) shows an average percentage change of -4.3% (improved AQI) compared to previous years: 2020 (64), 2021 (67), 2022 (69), 2023 (70), 2024 (62).
