Seismological Bureau, Heihe, Heilongjiang, 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
Seismological Bureau, Heihe, Heilongjiang, China
2021
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
20th Aug 2021
66AQILowest AQI recorded on
1st Aug 2021
14AQISame Day Analysis (2nd August ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 55 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Seismological Bureau, Heihe, Heilongjiang, China
AQI
Day
Night
.
4 AM3rd Aug 2025
8 PM
3 AM4th Aug 2025
Day time
Avg. Highest Time
12AMNaNth undefined
AQI
Avg. Lowest Time
12AMNaNth undefined
AQI
Night time
Avg. Highest Time
4AM3rd Aug
53AQI
Avg. Lowest Time
2PM3rd Aug
34AQI
In the last 24 hours,
Seismological Bureau's AQI reached its highest point of 53 at 4 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Seismological Bureau, Heihe, Heilongjiang, 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 2025564 AMAQI
5th Jul 2025565 AMAQI
5th Jul 2025566 AMAQI
5th Jul 2025557 AMAQI
5th Jul 2025528 AMAQI
5th Jul 2025409 AMAQI
5th Jul 20253510 AMAQI
5th Jul 20253211 AMAQI
5th Jul 20254412 PMAQI
5th Jul 2025541 PMAQI
5th Jul 2025452 PMAQI
5th Jul 2025423 PMAQI
5th Jul 2025334 PMAQI
5th Jul 2025365 PMAQI
5th Jul 2025406 PMAQI
5th Jul 2025437 PMAQI
5th Jul 2025528 PMAQI
5th Jul 2025539 PMAQI
5th Jul 20255210 PMAQI
5th Jul 20255211 PMAQI
6th Jul 20255512 AMAQI
6th Jul 2025551 AMAQI
6th Jul 2025562 AMAQI
6th Jul 2025543 AMAQI
22°C18/27°C
6th Jul 2025534 AMAQI
6th Jul 2025535 AMAQI
6th Jul 2025526 AMAQI
6th Jul 2025527 AMAQI
6th Jul 2025368 AMAQI
6th Jul 2025289 AMAQI
6th Jul 20252510 AMAQI
6th Jul 20252411 AMAQI
6th Jul 20253112 PMAQI
6th Jul 2025321 PMAQI
6th Jul 2025352 PMAQI
6th Jul 2025363 PMAQI
6th Jul 2025374 PMAQI
6th Jul 2025375 PMAQI
6th Jul 2025386 PMAQI
6th Jul 2025447 PMAQI
6th Jul 2025488 PMAQI
6th Jul 2025549 PMAQI
6th Jul 20255410 PMAQI
6th Jul 20255311 PMAQI
7th Jul 20255512 AMAQI
7th Jul 2025531 AMAQI
7th Jul 2025552 AMAQI
7th Jul 2025533 AMAQI
19°C13/25°C
7th Jul 2025524 AMAQI
7th Jul 2025485 AMAQI
7th Jul 2025476 AMAQI
7th Jul 2025457 AMAQI
7th Jul 2025508 AMAQI
7th Jul 2025499 AMAQI
7th Jul 20254510 AMAQI
7th Jul 20254711 AMAQI
7th Jul 20254412 PMAQI
7th Jul 2025441 PMAQI
7th Jul 2025412 PMAQI
7th Jul 2025473 PMAQI
7th Jul 2025534 PMAQI
7th Jul 2025525 PMAQI
7th Jul 2025506 PMAQI
7th Jul 2025557 PMAQI
7th Jul 2025548 PMAQI
7th Jul 2025579 PMAQI
7th Jul 20255510 PMAQI
7th Jul 20255711 PMAQI
8th Jul 20255712 AMAQI
8th Jul 2025561 AMAQI
8th Jul 2025562 AMAQI
8th Jul 2025563 AMAQI
18°C13/24°C
8th Jul 2025544 AMAQI
8th Jul 2025545 AMAQI
8th Jul 2025536 AMAQI
8th Jul 2025547 AMAQI
8th Jul 2025528 AMAQI
8th Jul 2025549 AMAQI
8th Jul 20254210 AMAQI
8th Jul 20253611 AMAQI
8th Jul 20253312 PMAQI
8th Jul 2025351 PMAQI
8th Jul 2025342 PMAQI
8th Jul 2025323 PMAQI
8th Jul 2025324 PMAQI
8th Jul 2025395 PMAQI
8th Jul 2025556 PMAQI
8th Jul 2025507 PMAQI
8th Jul 2025548 PMAQI
8th Jul 2025559 PMAQI
8th Jul 20255410 PMAQI
8th Jul 20255411 PMAQI
9th Jul 20255312 AMAQI
9th Jul 2025551 AMAQI
9th Jul 2025562 AMAQI
9th Jul 2025543 AMAQI
20°C13/25°C
9th Jul 2025524 AMAQI
9th Jul 2025525 AMAQI
9th Jul 2025526 AMAQI
9th Jul 2025527 AMAQI
9th Jul 2025498 AMAQI
9th Jul 2025429 AMAQI
9th Jul 20254610 AMAQI
9th Jul 20254011 AMAQI
9th Jul 20254412 PMAQI
9th Jul 2025461 PMAQI
9th Jul 2025432 PMAQI
9th Jul 2025473 PMAQI
9th Jul 2025464 PMAQI
9th Jul 2025445 PMAQI
9th Jul 2025476 PMAQI
9th Jul 2025507 PMAQI
9th Jul 2025548 PMAQI
9th Jul 2025559 PMAQI
9th Jul 20255510 PMAQI
9th Jul 20255411 PMAQI
10th Jul 20255412 AMAQI
10th Jul 2025551 AMAQI
10th Jul 2025542 AMAQI
10th Jul 2025543 AMAQI
21°C17/26°C
10th Jul 2025534 AMAQI
10th Jul 2025535 AMAQI
10th Jul 2025526 AMAQI
10th Jul 2025527 AMAQI
10th Jul 2025468 AMAQI
10th Jul 2025419 AMAQI
10th Jul 20253810 AMAQI
10th Jul 20253411 AMAQI
10th Jul 20254112 PMAQI
10th Jul 2025441 PMAQI
10th Jul 2025482 PMAQI
10th Jul 2025483 PMAQI
10th Jul 2025494 PMAQI
10th Jul 2025505 PMAQI
10th Jul 2025496 PMAQI
10th Jul 2025567 PMAQI
10th Jul 2025568 PMAQI
10th Jul 2025599 PMAQI
10th Jul 20255410 PMAQI
10th Jul 20255311 PMAQI
11th Jul 20255412 AMAQI
11th Jul 2025551 AMAQI
11th Jul 2025542 AMAQI
11th Jul 2025553 AMAQI
22°C16/29°C
11th Jul 2025564 AMAQI
11th Jul 2025545 AMAQI
11th Jul 2025546 AMAQI
11th Jul 2025537 AMAQI
11th Jul 2025558 AMAQI
11th Jul 2025559 AMAQI
11th Jul 20255310 AMAQI
11th Jul 20254811 AMAQI
11th Jul 20255312 PMAQI
11th Jul 2025531 PMAQI
11th Jul 2025562 PMAQI
11th Jul 2025563 PMAQI
11th Jul 2025604 PMAQI
11th Jul 2025605 PMAQI
11th Jul 2025636 PMAQI
11th Jul 2025617 PMAQI
11th Jul 2025608 PMAQI
11th Jul 2025629 PMAQI
11th Jul 20256010 PMAQI
11th Jul 20255911 PMAQI
12th Jul 20255712 AMAQI
12th Jul 2025561 AMAQI
12th Jul 2025562 AMAQI
12th Jul 2025553 AMAQI
27°C19/35°C
12th Jul 2025554 AMAQI
12th Jul 2025545 AMAQI
12th Jul 2025546 AMAQI
12th Jul 2025547 AMAQI
12th Jul 2025558 AMAQI
12th Jul 2025539 AMAQI
12th Jul 20255210 AMAQI
12th Jul 20253711 AMAQI
12th Jul 20254812 PMAQI
12th Jul 2025501 PMAQI
12th Jul 2025542 PMAQI
12th Jul 2025513 PMAQI
12th Jul 2025564 PMAQI
12th Jul 2025525 PMAQI
12th Jul 2025526 PMAQI
12th Jul 2025557 PMAQI
12th Jul 2025548 PMAQI
12th Jul 2025569 PMAQI
12th Jul 20255810 PMAQI
12th Jul 20255611 PMAQI
13th Jul 20255512 AMAQI
13th Jul 2025541 AMAQI
13th Jul 2025552 AMAQI
13th Jul 2025553 AMAQI
23°C19/28°C
13th Jul 2025544 AMAQI
13th Jul 2025545 AMAQI
13th Jul 2025556 AMAQI
13th Jul 2025557 AMAQI
13th Jul 2025468 AMAQI
13th Jul 2025349 AMAQI
13th Jul 20253210 AMAQI
13th Jul 20253011 AMAQI
13th Jul 20253612 PMAQI
13th Jul 2025371 PMAQI
13th Jul 2025392 PMAQI
13th Jul 2025413 PMAQI
13th Jul 2025384 PMAQI
13th Jul 2025485 PMAQI
13th Jul 2025446 PMAQI
13th Jul 2025487 PMAQI
13th Jul 2025548 PMAQI
13th Jul 2025549 PMAQI
13th Jul 20255410 PMAQI
13th Jul 20255611 PMAQI
14th Jul 20255312 AMAQI
14th Jul 2025541 AMAQI
14th Jul 2025552 AMAQI
14th Jul 2025543 AMAQI
22°C17/28°C
14th Jul 2025534 AMAQI
14th Jul 2025545 AMAQI
14th Jul 2025536 AMAQI
14th Jul 2025537 AMAQI
14th Jul 2025448 AMAQI
14th Jul 2025339 AMAQI
14th Jul 20253610 AMAQI
14th Jul 20254211 AMAQI
14th Jul 20254812 PMAQI
14th Jul 2025441 PMAQI
14th Jul 2025412 PMAQI
14th Jul 2025393 PMAQI
14th Jul 2025414 PMAQI
14th Jul 2025365 PMAQI
14th Jul 2025356 PMAQI
14th Jul 2025447 PMAQI
14th Jul 2025538 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20256010 PMAQI
14th Jul 20255811 PMAQI
15th Jul 20255612 AMAQI
15th Jul 2025551 AMAQI
15th Jul 2025542 AMAQI
15th Jul 2025543 AMAQI
22°C15/29°C
15th Jul 2025534 AMAQI
15th Jul 2025535 AMAQI
15th Jul 2025546 AMAQI
15th Jul 2025537 AMAQI
15th Jul 2025388 AMAQI
15th Jul 2025279 AMAQI
15th Jul 20252410 AMAQI
15th Jul 20252611 AMAQI
15th Jul 20253212 PMAQI
15th Jul 2025301 PMAQI
15th Jul 2025322 PMAQI
15th Jul 2025373 PMAQI
15th Jul 2025304 PMAQI
15th Jul 2025455 PMAQI
15th Jul 2025406 PMAQI
15th Jul 2025547 PMAQI
15th Jul 2025548 PMAQI
15th Jul 2025569 PMAQI
15th Jul 20255610 PMAQI
15th Jul 20255511 PMAQI
16th Jul 20255212 AMAQI
16th Jul 2025481 AMAQI
16th Jul 2025512 AMAQI
16th Jul 2025523 AMAQI
23°C15/31°C
16th Jul 2025524 AMAQI
16th Jul 2025525 AMAQI
16th Jul 2025526 AMAQI
16th Jul 2025537 AMAQI
16th Jul 2025388 AMAQI
16th Jul 2025429 AMAQI
16th Jul 20254010 AMAQI
16th Jul 20253611 AMAQI
16th Jul 20253812 PMAQI
16th Jul 2025301 PMAQI
16th Jul 2025362 PMAQI
16th Jul 2025373 PMAQI
16th Jul 2025304 PMAQI
16th Jul 2025285 PMAQI
16th Jul 2025286 PMAQI
16th Jul 2025397 PMAQI
16th Jul 2025518 PMAQI
16th Jul 2025539 PMAQI
16th Jul 20255210 PMAQI
16th Jul 20255311 PMAQI
17th Jul 20255012 AMAQI
17th Jul 2025521 AMAQI
17th Jul 2025512 AMAQI
17th Jul 2025523 AMAQI
23°C18/30°C
17th Jul 2025524 AMAQI
17th Jul 2025525 AMAQI
17th Jul 2025526 AMAQI
17th Jul 2025527 AMAQI
17th Jul 2025458 AMAQI
17th Jul 2025389 AMAQI
17th Jul 20253810 AMAQI
17th Jul 20254611 AMAQI
17th Jul 20253812 PMAQI
17th Jul 2025381 PMAQI
17th Jul 2025382 PMAQI
17th Jul 2025373 PMAQI
17th Jul 2025304 PMAQI
17th Jul 2025345 PMAQI
17th Jul 2025396 PMAQI
17th Jul 2025437 PMAQI
17th Jul 2025508 PMAQI
17th Jul 2025519 PMAQI
17th Jul 20255010 PMAQI
17th Jul 20255011 PMAQI
18th Jul 20255212 AMAQI
18th Jul 2025501 AMAQI
18th Jul 2025512 AMAQI
18th Jul 2025513 AMAQI
23°C18/27°C
18th Jul 2025474 AMAQI
18th Jul 2025505 AMAQI
18th Jul 2025526 AMAQI
18th Jul 2025527 AMAQI
18th Jul 2025498 AMAQI
18th Jul 2025509 AMAQI
18th Jul 20254910 AMAQI
18th Jul 20253911 AMAQI
18th Jul 20254612 PMAQI
18th Jul 2025411 PMAQI
18th Jul 2025422 PMAQI
18th Jul 2025373 PMAQI
18th Jul 2025374 PMAQI
18th Jul 2025425 PMAQI
18th Jul 2025506 PMAQI
18th Jul 2025427 PMAQI
18th Jul 2025468 PMAQI
18th Jul 2025479 PMAQI
18th Jul 20255210 PMAQI
18th Jul 20255011 PMAQI
19th Jul 20255012 AMAQI
19th Jul 2025511 AMAQI
19th Jul 2025502 AMAQI
19th Jul 2025493 AMAQI
22°C19/27°C
19th Jul 2025514 AMAQI
19th Jul 2025525 AMAQI
19th Jul 2025526 AMAQI
19th Jul 2025527 AMAQI
19th Jul 2025538 AMAQI
19th Jul 2025499 AMAQI
19th Jul 20254310 AMAQI
19th Jul 20254111 AMAQI
19th Jul 20253612 PMAQI
19th Jul 2025311 PMAQI
19th Jul 2025322 PMAQI
19th Jul 2025293 PMAQI
19th Jul 2025304 PMAQI
19th Jul 2025305 PMAQI
19th Jul 2025346 PMAQI
19th Jul 2025427 PMAQI
19th Jul 2025518 PMAQI
19th Jul 2025529 PMAQI
19th Jul 20255210 PMAQI
19th Jul 20255111 PMAQI
20th Jul 20255212 AMAQI
20th Jul 2025541 AMAQI
20th Jul 2025522 AMAQI
20th Jul 2025523 AMAQI
24°C18/32°C
20th Jul 2025524 AMAQI
20th Jul 2025525 AMAQI
20th Jul 2025526 AMAQI
20th Jul 2025527 AMAQI
20th Jul 2025508 AMAQI
20th Jul 2025489 AMAQI
20th Jul 20254910 AMAQI
20th Jul 20254711 AMAQI
20th Jul 20254212 PMAQI
20th Jul 2025341 PMAQI
20th Jul 2025382 PMAQI
20th Jul 2025363 PMAQI
20th Jul 2025374 PMAQI
20th Jul 2025295 PMAQI
20th Jul 2025356 PMAQI
20th Jul 2025387 PMAQI
20th Jul 2025488 PMAQI
20th Jul 2025469 PMAQI
20th Jul 20254710 PMAQI
20th Jul 20254711 PMAQI
21st Jul 20255212 AMAQI
21st Jul 2025491 AMAQI
21st Jul 2025522 AMAQI
21st Jul 2025523 AMAQI
22°C18/27°C
21st Jul 2025514 AMAQI
21st Jul 2025505 AMAQI
21st Jul 2025496 AMAQI
21st Jul 2025507 AMAQI
21st Jul 2025388 AMAQI
21st Jul 2025329 AMAQI
21st Jul 20254010 AMAQI
21st Jul 20253111 AMAQI
21st Jul 20253712 PMAQI
21st Jul 2025371 PMAQI
21st Jul 2025352 PMAQI
21st Jul 2025323 PMAQI
21st Jul 2025304 PMAQI
21st Jul 2025385 PMAQI
21st Jul 2025466 PMAQI
21st Jul 2025507 PMAQI
21st Jul 2025528 PMAQI
21st Jul 2025489 PMAQI
21st Jul 20254610 PMAQI
21st Jul 20254511 PMAQI
22nd Jul 20254312 AMAQI
22nd Jul 2025461 AMAQI
22nd Jul 2025492 AMAQI
22nd Jul 2025503 AMAQI
22°C19/28°C
22nd Jul 2025474 AMAQI
22nd Jul 2025485 AMAQI
22nd Jul 2025456 AMAQI
22nd Jul 2025467 AMAQI
22nd Jul 2025398 AMAQI
22nd Jul 2025329 AMAQI
22nd Jul 20253010 AMAQI
22nd Jul 20253711 AMAQI
22nd Jul 20253612 PMAQI
22nd Jul 2025441 PMAQI
22nd Jul 2025452 PMAQI
22nd Jul 2025543 PMAQI
22nd Jul 2025644 PMAQI
22nd Jul 2025605 PMAQI
22nd Jul 2025556 PMAQI
22nd Jul 2025577 PMAQI
22nd Jul 2025578 PMAQI
22nd Jul 2025549 PMAQI
22nd Jul 20255410 PMAQI
22nd Jul 20255311 PMAQI
23rd Jul 20254812 AMAQI
23rd Jul 2025421 AMAQI
23rd Jul 2025392 AMAQI
23rd Jul 2025413 AMAQI
24°C17/31°C
23rd Jul 2025414 AMAQI
23rd Jul 2025485 AMAQI
23rd Jul 2025486 AMAQI
23rd Jul 2025487 AMAQI
23rd Jul 2025528 AMAQI
23rd Jul 2025489 AMAQI
23rd Jul 20254010 AMAQI
23rd Jul 20253611 AMAQI
23rd Jul 20254512 PMAQI
23rd Jul 2025461 PMAQI
23rd Jul 2025402 PMAQI
23rd Jul 2025463 PMAQI
23rd Jul 2025514 PMAQI
23rd Jul 2025525 PMAQI
23rd Jul 2025536 PMAQI
23rd Jul 2025517 PMAQI
23rd Jul 2025548 PMAQI
23rd Jul 2025549 PMAQI
23rd Jul 20255410 PMAQI
23rd Jul 20255011 PMAQI
24th Jul 20254912 AMAQI
24th Jul 2025521 AMAQI
24th Jul 2025502 AMAQI
24th Jul 2025483 AMAQI
26°C20/31°C
24th Jul 2025424 AMAQI
24th Jul 2025505 AMAQI
24th Jul 2025496 AMAQI
24th Jul 2025497 AMAQI
24th Jul 2025438 AMAQI
24th Jul 2025499 AMAQI
24th Jul 20254110 AMAQI
24th Jul 20254911 AMAQI
24th Jul 20255012 PMAQI
24th Jul 2025511 PMAQI
24th Jul 2025512 PMAQI
24th Jul 2025543 PMAQI
24th Jul 2025514 PMAQI
24th Jul 2025545 PMAQI
24th Jul 2025546 PMAQI
24th Jul 2025597 PMAQI
24th Jul 2025598 PMAQI
24th Jul 2025609 PMAQI
24th Jul 20255710 PMAQI
24th Jul 20255611 PMAQI
25th Jul 20255312 AMAQI
25th Jul 2025491 AMAQI
25th Jul 2025522 AMAQI
25th Jul 2025463 AMAQI
26°C20/33°C
25th Jul 2025494 AMAQI
25th Jul 2025505 AMAQI
25th Jul 2025546 AMAQI
25th Jul 2025557 AMAQI
25th Jul 2025478 AMAQI
25th Jul 2025499 AMAQI
25th Jul 20255310 AMAQI
25th Jul 20253611 AMAQI
25th Jul 20253612 PMAQI
25th Jul 2025301 PMAQI
25th Jul 2025252 PMAQI
25th Jul 2025263 PMAQI
25th Jul 2025354 PMAQI
25th Jul 2025295 PMAQI
25th Jul 2025436 PMAQI
25th Jul 2025547 PMAQI
25th Jul 2025538 PMAQI
25th Jul 2025539 PMAQI
25th Jul 20255410 PMAQI
25th Jul 20255211 PMAQI
26th Jul 20255212 AMAQI
26th Jul 2025481 AMAQI
26th Jul 2025502 AMAQI
26th Jul 2025513 AMAQI
25°C17/32°C
26th Jul 2025524 AMAQI
26th Jul 2025525 AMAQI
26th Jul 2025526 AMAQI
26th Jul 2025527 AMAQI
26th Jul 2025568 AMAQI
26th Jul 2025579 AMAQI
26th Jul 20255610 AMAQI
26th Jul 20255211 AMAQI
26th Jul 20255312 PMAQI
26th Jul 2025481 PMAQI
26th Jul 2025462 PMAQI
26th Jul 2025523 PMAQI
26th Jul 2025514 PMAQI
26th Jul 2025485 PMAQI
26th Jul 2025506 PMAQI
26th Jul 2025467 PMAQI
26th Jul 2025528 PMAQI
26th Jul 2025539 PMAQI
26th Jul 20255210 PMAQI
26th Jul 20255211 PMAQI
27th Jul 20255412 AMAQI
27th Jul 2025521 AMAQI
27th Jul 2025532 AMAQI
27th Jul 2025533 AMAQI
24°C18/32°C
27th Jul 2025524 AMAQI
27th Jul 2025525 AMAQI
27th Jul 2025526 AMAQI
27th Jul 2025527 AMAQI
27th Jul 2025528 AMAQI
27th Jul 2025489 AMAQI
27th Jul 20254910 AMAQI
27th Jul 20254911 AMAQI
27th Jul 20254412 PMAQI
27th Jul 2025391 PMAQI
27th Jul 2025432 PMAQI
27th Jul 2025343 PMAQI
27th Jul 2025344 PMAQI
27th Jul 2025345 PMAQI
27th Jul 2025376 PMAQI
27th Jul 2025337 PMAQI
27th Jul 2025488 PMAQI
27th Jul 2025509 PMAQI
27th Jul 20254810 PMAQI
27th Jul 20255111 PMAQI
28th Jul 20254412 AMAQI
28th Jul 2025511 AMAQI
28th Jul 2025522 AMAQI
28th Jul 2025523 AMAQI
22°C16/28°C
28th Jul 2025484 AMAQI
28th Jul 2025485 AMAQI
28th Jul 2025516 AMAQI
28th Jul 2025527 AMAQI
28th Jul 2025448 AMAQI
28th Jul 2025369 AMAQI
28th Jul 20252810 AMAQI
28th Jul 20252811 AMAQI
28th Jul 20253012 PMAQI
28th Jul 2025311 PMAQI
28th Jul 2025342 PMAQI
28th Jul 2025393 PMAQI
28th Jul 2025434 PMAQI
28th Jul 2025365 PMAQI
28th Jul 2025386 PMAQI
28th Jul 2025447 PMAQI
28th Jul 2025548 PMAQI
28th Jul 2025589 PMAQI
28th Jul 20255210 PMAQI
28th Jul 20254811 PMAQI
29th Jul 20255012 AMAQI
29th Jul 2025521 AMAQI
29th Jul 2025532 AMAQI
29th Jul 2025523 AMAQI
24°C17/30°C
29th Jul 2025494 AMAQI
29th Jul 2025475 AMAQI
29th Jul 2025516 AMAQI
29th Jul 2025467 AMAQI
29th Jul 2025398 AMAQI
29th Jul 2025429 AMAQI
29th Jul 20254310 AMAQI
29th Jul 20255511 AMAQI
29th Jul 20255712 PMAQI
29th Jul 2025481 PMAQI
29th Jul 2025482 PMAQI
29th Jul 2025383 PMAQI
29th Jul 2025404 PMAQI
29th Jul 2025385 PMAQI
29th Jul 2025356 PMAQI
29th Jul 2025427 PMAQI
29th Jul 2025508 PMAQI
29th Jul 2025409 PMAQI
29th Jul 20254310 PMAQI
29th Jul 20254611 PMAQI
30th Jul 20254912 AMAQI
30th Jul 2025481 AMAQI
30th Jul 2025542 AMAQI
30th Jul 2025583 AMAQI
19°C17/22°C
30th Jul 2025524 AMAQI
30th Jul 2025515 AMAQI
30th Jul 2025506 AMAQI
30th Jul 2025507 AMAQI
30th Jul 2025388 AMAQI
30th Jul 2025419 AMAQI
30th Jul 20252910 AMAQI
30th Jul 20252811 AMAQI
30th Jul 20255012 PMAQI
30th Jul 2025391 PMAQI
30th Jul 2025332 PMAQI
30th Jul 2025303 PMAQI
30th Jul 2025424 PMAQI
30th Jul 2025385 PMAQI
30th Jul 2025376 PMAQI
30th Jul 2025367 PMAQI
30th Jul 2025388 PMAQI
30th Jul 2025429 PMAQI
30th Jul 20254210 PMAQI
30th Jul 20254211 PMAQI
31st Jul 20254512 AMAQI
31st Jul 2025461 AMAQI
31st Jul 2025492 AMAQI
31st Jul 2025533 AMAQI
20°C14/25°C
31st Jul 2025534 AMAQI
31st Jul 2025535 AMAQI
31st Jul 2025536 AMAQI
31st Jul 2025537 AMAQI
31st Jul 2025538 AMAQI
31st Jul 2025539 AMAQI
31st Jul 20253610 AMAQI
31st Jul 20252811 AMAQI
31st Jul 20252912 PMAQI
31st Jul 2025321 PMAQI
31st Jul 2025282 PMAQI
31st Jul 2025333 PMAQI
31st Jul 2025324 PMAQI
31st Jul 2025315 PMAQI
31st Jul 2025366 PMAQI
31st Jul 2025387 PMAQI
31st Jul 2025578 PMAQI
31st Jul 2025579 PMAQI
31st Jul 20255610 PMAQI
31st Jul 20255311 PMAQI
1st Aug 20254912 AMAQI
1st Aug 2025481 AMAQI
1st Aug 2025492 AMAQI
1st Aug 2025453 AMAQI
20°C13/27°C
1st Aug 2025444 AMAQI
1st Aug 2025445 AMAQI
1st Aug 2025466 AMAQI
1st Aug 2025467 AMAQI
1st Aug 2025488 AMAQI
1st Aug 2025479 AMAQI
1st Aug 20254210 AMAQI
1st Aug 20254611 AMAQI
1st Aug 20254012 PMAQI
1st Aug 2025391 PMAQI
1st Aug 2025502 PMAQI
1st Aug 2025363 PMAQI
1st Aug 2025514 PMAQI
1st Aug 2025645 PMAQI
1st Aug 2025426 PMAQI
1st Aug 2025527 PMAQI
1st Aug 2025768 PMAQI
1st Aug 2025679 PMAQI
1st Aug 20255310 PMAQI
1st Aug 20256611 PMAQI
2nd Aug 20258212 AMAQI
2nd Aug 2025581 AMAQI
2nd Aug 2025482 AMAQI
2nd Aug 2025483 AMAQI
21°C15/26°C
2nd Aug 2025484 AMAQI
2nd Aug 2025485 AMAQI
2nd Aug 2025456 AMAQI
2nd Aug 2025477 AMAQI
2nd Aug 2025558 AMAQI
2nd Aug 2025549 AMAQI
2nd Aug 20255510 AMAQI
2nd Aug 20255411 AMAQI
2nd Aug 20255812 PMAQI
2nd Aug 2025531 PMAQI
2nd Aug 2025772 PMAQI
2nd Aug 2025643 PMAQI
2nd Aug 2025574 PMAQI
2nd Aug 2025425 PMAQI
2nd Aug 2025546 PMAQI
2nd Aug 2025537 PMAQI
2nd Aug 2025588 PMAQI
2nd Aug 2025609 PMAQI
2nd Aug 20255310 PMAQI
2nd Aug 20255311 PMAQI
3rd Aug 20255012 AMAQI
3rd Aug 2025531 AMAQI
3rd Aug 2025522 AMAQI
3rd Aug 2025523 AMAQI
21°C15/27°C
3rd Aug 2025534 AMAQI
3rd Aug 2025525 AMAQI
3rd Aug 2025536 AMAQI
3rd Aug 2025537 AMAQI
3rd Aug 2025528 AMAQI
3rd Aug 2025429 AMAQI
3rd Aug 20254710 AMAQI
3rd Aug 20255011 AMAQI
3rd Aug 20255212 PMAQI
3rd Aug 2025481 PMAQI
3rd Aug 2025342 PMAQI
3rd Aug 2025383 PMAQI
3rd Aug 2025454 PMAQI
3rd Aug 2025395 PMAQI
3rd Aug 2025366 PMAQI
3rd Aug 2025417 PMAQI
3rd Aug 2025468 PMAQI
3rd Aug 2025499 PMAQI
3rd Aug 20255110 PMAQI
3rd Aug 20255211 PMAQI
4th Aug 20255312 AMAQI
4th Aug 2025521 AMAQI
--°C/°C
4 AM
12 PM
8 PM
12 AM
3 AM
--°C/°C
Day time
Avg. Highest Time
8 PM
53AQI
1 hours / Day
30 hours / Month
Avg. Lowest Time
11 AM
39AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 8 PM to 8 PM (Avg. 53), while the lowest AQI was between 11 AM to 11 AM (Avg. 39).
Night time
Avg. Highest Time
12 AM - 11 PM
53AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
12 AM - 11 PM
53AQI
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. 53), while the lowest AQI was between 12 AM to 11 PM (Avg. 53).
2025 Days Vs Air Quality
Seismological Bureau, Heihe, Heilongjiang, China
2025
14%
30
60%
128
20%
42
6%
13
0.4%
1
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Good
30 DaysModerate
128 DaysPoor
42 DaysUnhealthy
13 DaysSevere
1 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 14%
Health Risk Level:
Extreme
In 2025, 14% 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
Seismological Bureau, Heihe, Heilongjiang, 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
138AQI
138AQI
2nd January 2025
133AQI
133AQI
3rd January 2025
123AQI
123AQI
4th January 2025
165AQI
165AQI
5th January 2025
129AQI
129AQI
6th January 2025
160AQI
160AQI
7th January 2025
143AQI
143AQI
8th January 2025
112AQI
112AQI
9th January 2025
121AQI
121AQI
10th January 2025
139AQI
139AQI
11th January 2025
168AQI
168AQI
12th January 2025
178AQI
178AQI
13th January 2025
177AQI
177AQI
14th January 2025
188AQI
188AQI
15th January 2025
133AQI
133AQI
16th January 2025
118AQI
118AQI
17th January 2025
149AQI
149AQI
18th January 2025
135AQI
135AQI
19th January 2025
162AQI
162AQI
20th January 2025
164AQI
164AQI
21st January 2025
158AQI
158AQI
22nd January 2025
147AQI
147AQI
23rd January 2025
196AQI
196AQI
24th January 2025
191AQI
191AQI
25th January 2025
212AQI
212AQI
26th January 2025
170AQI
170AQI
27th January 2025
128AQI
128AQI
28th January 2025
122AQI
122AQI
29th January 2025
109AQI
109AQI
30th January 2025
99AQI
99AQI
31st January 2025
122AQI
122AQI
1st February 2025
129AQI
129AQI
2nd February 2025
164AQI
164AQI
3rd February 2025
134AQI
134AQI
4th February 2025
115AQI
115AQI
5th February 2025
113AQI
113AQI
6th February 2025
99AQI
99AQI
7th February 2025
92AQI
92AQI
8th February 2025
90AQI
90AQI
9th February 2025
111AQI
111AQI
10th February 2025
118AQI
118AQI
11th February 2025
147AQI
147AQI
12th February 2025
128AQI
128AQI
13th February 2025
116AQI
116AQI
14th February 2025
112AQI
112AQI
15th February 2025
129AQI
129AQI
16th February 2025
104AQI
104AQI
17th February 2025
83AQI
83AQI
18th February 2025
85AQI
85AQI
19th February 2025
80AQI
80AQI
20th February 2025
77AQI
77AQI
21st February 2025
80AQI
80AQI
22nd February 2025
71AQI
71AQI
23rd February 2025
83AQI
83AQI
24th February 2025
83AQI
83AQI
25th February 2025
91AQI
91AQI
26th February 2025
80AQI
80AQI
27th February 2025
115AQI
115AQI
28th February 2025
88AQI
88AQI
1st March 2025
81AQI
81AQI
2nd March 2025
66AQI
66AQI
3rd March 2025
78AQI
78AQI
4th March 2025
82AQI
82AQI
5th March 2025
94AQI
94AQI
6th March 2025
89AQI
89AQI
7th March 2025
97AQI
97AQI
8th March 2025
95AQI
95AQI
9th March 2025
114AQI
114AQI
10th March 2025
126AQI
126AQI
11th March 2025
113AQI
113AQI
12th March 2025
90AQI
90AQI
13th March 2025
79AQI
79AQI
14th March 2025
62AQI
62AQI
15th March 2025
63AQI
63AQI
16th March 2025
66AQI
66AQI
17th March 2025
64AQI
64AQI
18th March 2025
67AQI
67AQI
19th March 2025
92AQI
92AQI
20th March 2025
100AQI
100AQI
21st March 2025
75AQI
75AQI
22nd March 2025
69AQI
69AQI
23rd March 2025
83AQI
83AQI
24th March 2025
55AQI
55AQI
25th March 2025
69AQI
69AQI
26th March 2025
75AQI
75AQI
27th March 2025
70AQI
70AQI
28th March 2025
68AQI
68AQI
29th March 2025
60AQI
60AQI
30th March 2025
63AQI
63AQI
31st March 2025
84AQI
84AQI
1st April 2025
106AQI
106AQI
2nd April 2025
108AQI
108AQI
3rd April 2025
108AQI
108AQI
4th April 2025
108AQI
108AQI
5th April 2025
90AQI
90AQI
6th April 2025
98AQI
98AQI
7th April 2025
92AQI
92AQI
8th April 2025
88AQI
88AQI
9th April 2025
114AQI
114AQI
10th April 2025
141AQI
141AQI
11th April 2025
118AQI
118AQI
12th April 2025
120AQI
120AQI
13th April 2025
82AQI
82AQI
14th April 2025
76AQI
76AQI
15th April 2025
59AQI
59AQI
16th April 2025
68AQI
68AQI
17th April 2025
104AQI
104AQI
18th April 2025
78AQI
78AQI
19th April 2025
78AQI
78AQI
20th April 2025
84AQI
84AQI
21st April 2025
86AQI
86AQI
22nd April 2025
61AQI
61AQI
23rd April 2025
70AQI
70AQI
24th April 2025
69AQI
69AQI
25th April 2025
66AQI
66AQI
26th April 2025
56AQI
56AQI
27th April 2025
87AQI
87AQI
28th April 2025
80AQI
80AQI
29th April 2025
99AQI
99AQI
30th April 2025
87AQI
87AQI
1st May 2025
84AQI
84AQI
2nd May 2025
75AQI
75AQI
3rd May 2025
60AQI
60AQI
4th May 2025
51AQI
51AQI
5th May 2025
54AQI
54AQI
6th May 2025
53AQI
53AQI
7th May 2025
61AQI
61AQI
8th May 2025
67AQI
67AQI
9th May 2025
69AQI
69AQI
10th May 2025
57AQI
57AQI
11th May 2025
88AQI
88AQI
12th May 2025
81AQI
81AQI
13th May 2025
85AQI
85AQI
14th May 2025
97AQI
97AQI
15th May 2025
93AQI
93AQI
16th May 2025
81AQI
81AQI
17th May 2025
69AQI
69AQI
18th May 2025
66AQI
66AQI
19th May 2025
60AQI
60AQI
20th May 2025
64AQI
64AQI
21st May 2025
52AQI
52AQI
22nd May 2025
52AQI
52AQI
23rd May 2025
59AQI
59AQI
24th May 2025
52AQI
52AQI
25th May 2025
53AQI
53AQI
26th May 2025
65AQI
65AQI
27th May 2025
62AQI
62AQI
28th May 2025
86AQI
86AQI
29th May 2025
74AQI
74AQI
30th May 2025
83AQI
83AQI
31st May 2025
69AQI
69AQI
1st June 2025
69AQI
69AQI
2nd June 2025
64AQI
64AQI
3rd June 2025
56AQI
56AQI
4th June 2025
43AQI
43AQI
5th June 2025
53AQI
53AQI
6th June 2025
45AQI
45AQI
7th June 2025
47AQI
47AQI
8th June 2025
51AQI
51AQI
9th June 2025
54AQI
54AQI
10th June 2025
46AQI
46AQI
11th June 2025
42AQI
42AQI
12th June 2025
50AQI
50AQI
13th June 2025
58AQI
58AQI
14th June 2025
52AQI
52AQI
15th June 2025
61AQI
61AQI
16th June 2025
61AQI
61AQI
17th June 2025
54AQI
54AQI
18th June 2025
62AQI
62AQI
19th June 2025
56AQI
56AQI
20th June 2025
54AQI
54AQI
21st June 2025
43AQI
43AQI
22nd June 2025
39AQI
39AQI
23rd June 2025
53AQI
53AQI
24th June 2025
56AQI
56AQI
25th June 2025
61AQI
61AQI
26th June 2025
58AQI
58AQI
27th June 2025
64AQI
64AQI
28th June 2025
60AQI
60AQI
29th June 2025
60AQI
60AQI
30th June 2025
61AQI
61AQI
1st July 2025
54AQI
54AQI
2nd July 2025
53AQI
53AQI
3rd July 2025
58AQI
58AQI
4th July 2025
52AQI
52AQI
5th July 2025
49AQI
49AQI
6th July 2025
45AQI
45AQI
7th July 2025
51AQI
51AQI
8th July 2025
49AQI
49AQI
9th July 2025
50AQI
50AQI
10th July 2025
51AQI
51AQI
11th July 2025
57AQI
57AQI
12th July 2025
54AQI
54AQI
13th July 2025
48AQI
48AQI
14th July 2025
48AQI
48AQI
15th July 2025
46AQI
46AQI
16th July 2025
44AQI
44AQI
17th July 2025
46AQI
46AQI
18th July 2025
47AQI
47AQI
19th July 2025
45AQI
45AQI
20th July 2025
46AQI
46AQI
21st July 2025
45AQI
45AQI
22nd July 2025
48AQI
48AQI
23rd July 2025
47AQI
47AQI
24th July 2025
52AQI
52AQI
25th July 2025
46AQI
46AQI
26th July 2025
51AQI
51AQI
27th July 2025
47AQI
47AQI
28th July 2025
44AQI
44AQI
29th July 2025
46AQI
46AQI
30th July 2025
43AQI
43AQI
31st July 2025
45AQI
45AQI
1st August 2025
50AQI
50AQI
2nd August 2025
55AQI
55AQI
148AQI
104AQI
80AQI
89AQI
68AQI
54AQI
49AQI
53AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202584AQI
1
17
12
1
14
13
1
28
3
21
9
31
8
22
21
10
1
1
30
128
42
13
1
Highest AQI recorded in
January148AQI
Lowest AQI recorded in
July49AQI
202466AQI
1
14
1
1
2
2
4
8
10
20
11
20
20
11
15
14
4
24
3
6
19
5
17
13
1
71
151
23
1
Highest AQI recorded in
February119AQI
Lowest AQI recorded in
August49AQI
202371AQI
3
28
3
31
3
Highest AQI recorded in
December72AQI
Lowest AQI recorded in
November56AQI
202249AQI
17
13
1
17
5
15
7
1
20
9
1
22
9
13
13
1
2
105
58
3
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
February43AQI
202152AQI
11
15
1
1
11
12
2
1
10
16
3
20
7
2
1
26
5
14
9
26
3
1
26
4
30
27
4
1
26
3
6
17
208
118
11
4
Highest AQI recorded in
November70AQI
Lowest AQI recorded in
August36AQI
202042AQI
7
5
1
13
8
8
10
29
1
12
18
1
28
3
30
24
5
2
25
5
15
15
1
191
70
5
Highest AQI recorded in
July58AQI
Lowest AQI recorded in
September28AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
84AQILeast Polluted Year Recorded
2020(Avg.)
42AQISeismological Bureau's annual 2025 AQI (84) shows an average percentage change of 56.2% (worsened AQI) compared to previous years: 2020 (42), 2021 (52), 2022 (49), 2023 (71), 2024 (66).
