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+
November Air Quality Analysis
Seismological Bureau, Heihe, Heilongjiang, China
2021
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
23rd Nov 2025
209AQILowest AQI recorded on
6th Nov 2024
32AQISame Day Analysis (26th November ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 157 of Unhealthy air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 26th Nov - 27th Nov 2025
Seismological Bureau, Heihe, Heilongjiang, China
AQI
Day
Night
.
7 AM26th Nov 2025
4 PM
6 AM27th Nov 2025
Day time
Avg. Highest Time
8AM26th Nov
157AQI
Avg. Lowest Time
1PM26th Nov
133AQI
Night time
Avg. Highest Time
7AM26th Nov
159AQI
Avg. Lowest Time
12AM27th Nov
118AQI
In the last 24 hours,
Seismological Bureau's AQI reached its highest point of 159 at 7 AM during the Night, while the lowest point, 118, was recorded at 12 AM during the Night between 26th Nov and 27th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Seismological Bureau, Heihe, Heilongjiang, China
OctNov
28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th
Day
Night
28th Oct 2025917 AMAQI
28th Oct 2025908 AMAQI
28th Oct 2025929 AMAQI
28th Oct 20258810 AMAQI
28th Oct 20257711 AMAQI
28th Oct 20256912 PMAQI
28th Oct 2025711 PMAQI
28th Oct 2025742 PMAQI
28th Oct 2025703 PMAQI
28th Oct 2025764 PMAQI
28th Oct 2025735 PMAQI
28th Oct 2025866 PMAQI
28th Oct 2025827 PMAQI
28th Oct 2025848 PMAQI
28th Oct 2025989 PMAQI
28th Oct 20259610 PMAQI
28th Oct 20259111 PMAQI
29th Oct 20259912 AMAQI
29th Oct 20251021 AMAQI
29th Oct 20251112 AMAQI
29th Oct 20251113 AMAQI
29th Oct 20251144 AMAQI
29th Oct 20251125 AMAQI
29th Oct 20251386 AMAQI
-2°C-4/2°C
29th Oct 20251457 AMAQI
29th Oct 20251248 AMAQI
29th Oct 20251329 AMAQI
29th Oct 202513610 AMAQI
29th Oct 202516111 AMAQI
29th Oct 202516212 PMAQI
29th Oct 20251741 PMAQI
29th Oct 20252102 PMAQI
29th Oct 20252133 PMAQI
29th Oct 20251944 PMAQI
29th Oct 20251825 PMAQI
29th Oct 20251826 PMAQI
29th Oct 20251767 PMAQI
29th Oct 20251758 PMAQI
29th Oct 20251869 PMAQI
29th Oct 202518710 PMAQI
29th Oct 202518911 PMAQI
30th Oct 202519112 AMAQI
30th Oct 20251901 AMAQI
30th Oct 20251932 AMAQI
30th Oct 20251953 AMAQI
30th Oct 20252194 AMAQI
30th Oct 20251965 AMAQI
30th Oct 20251976 AMAQI
-3°C-8/3°C
30th Oct 20251937 AMAQI
30th Oct 20251918 AMAQI
30th Oct 20251949 AMAQI
30th Oct 202519110 AMAQI
30th Oct 202518411 AMAQI
30th Oct 202517312 PMAQI
30th Oct 20251531 PMAQI
30th Oct 20251432 PMAQI
30th Oct 20251003 PMAQI
30th Oct 2025684 PMAQI
30th Oct 2025675 PMAQI
30th Oct 2025676 PMAQI
30th Oct 2025747 PMAQI
30th Oct 2025758 PMAQI
30th Oct 2025829 PMAQI
30th Oct 20258810 PMAQI
30th Oct 20259211 PMAQI
31st Oct 20257912 AMAQI
31st Oct 2025851 AMAQI
31st Oct 2025882 AMAQI
31st Oct 2025963 AMAQI
31st Oct 20251134 AMAQI
31st Oct 20251245 AMAQI
31st Oct 20251506 AMAQI
-2°C-6/2°C
31st Oct 20251327 AMAQI
31st Oct 20251268 AMAQI
31st Oct 20251239 AMAQI
31st Oct 202511410 AMAQI
31st Oct 202511511 AMAQI
31st Oct 202511612 PMAQI
31st Oct 20251361 PMAQI
31st Oct 20251432 PMAQI
31st Oct 20251293 PMAQI
31st Oct 20251284 PMAQI
31st Oct 20251325 PMAQI
31st Oct 20251186 PMAQI
31st Oct 20251247 PMAQI
31st Oct 20251378 PMAQI
31st Oct 20251519 PMAQI
31st Oct 202516410 PMAQI
31st Oct 202516711 PMAQI
1st Nov 202517112 AMAQI
1st Nov 20251751 AMAQI
1st Nov 20251812 AMAQI
1st Nov 20251773 AMAQI
1st Nov 20251664 AMAQI
1st Nov 20251555 AMAQI
1st Nov 20251396 AMAQI
-1°C-6/4°C
1st Nov 20251187 AMAQI
1st Nov 20251128 AMAQI
1st Nov 20251539 AMAQI
1st Nov 202515510 AMAQI
1st Nov 202515511 AMAQI
1st Nov 202515912 PMAQI
1st Nov 20251551 PMAQI
1st Nov 20251622 PMAQI
1st Nov 20251703 PMAQI
1st Nov 20251664 PMAQI
1st Nov 20251675 PMAQI
1st Nov 20251616 PMAQI
1st Nov 20251657 PMAQI
1st Nov 20251578 PMAQI
1st Nov 20251449 PMAQI
1st Nov 20258510 PMAQI
1st Nov 20258811 PMAQI
2nd Nov 20258212 AMAQI
2nd Nov 2025631 AMAQI
2nd Nov 2025602 AMAQI
2nd Nov 2025583 AMAQI
2nd Nov 2025564 AMAQI
2nd Nov 2025565 AMAQI
2nd Nov 2025586 AMAQI
-3°C-5/1°C
2nd Nov 2025607 AMAQI
2nd Nov 2025578 AMAQI
2nd Nov 2025519 AMAQI
2nd Nov 20254510 AMAQI
2nd Nov 20254011 AMAQI
2nd Nov 20253812 PMAQI
2nd Nov 2025391 PMAQI
2nd Nov 2025442 PMAQI
2nd Nov 2025513 PMAQI
2nd Nov 2025554 PMAQI
2nd Nov 2025595 PMAQI
2nd Nov 2025596 PMAQI
2nd Nov 2025597 PMAQI
2nd Nov 2025608 PMAQI
2nd Nov 2025599 PMAQI
2nd Nov 20256010 PMAQI
2nd Nov 20256111 PMAQI
3rd Nov 20256412 AMAQI
3rd Nov 2025621 AMAQI
3rd Nov 2025632 AMAQI
3rd Nov 2025683 AMAQI
3rd Nov 2025714 AMAQI
3rd Nov 2025795 AMAQI
3rd Nov 20251076 AMAQI
-9°C-14/-4°C
3rd Nov 20251247 AMAQI
3rd Nov 20251188 AMAQI
3rd Nov 20251019 AMAQI
3rd Nov 20259310 AMAQI
3rd Nov 20259011 AMAQI
3rd Nov 20258112 PMAQI
3rd Nov 2025811 PMAQI
3rd Nov 2025782 PMAQI
3rd Nov 2025783 PMAQI
3rd Nov 2025764 PMAQI
3rd Nov 2025805 PMAQI
3rd Nov 20251416 PMAQI
3rd Nov 20251627 PMAQI
3rd Nov 20251648 PMAQI
3rd Nov 20251599 PMAQI
3rd Nov 202513210 PMAQI
3rd Nov 202510411 PMAQI
4th Nov 20259212 AMAQI
4th Nov 2025851 AMAQI
4th Nov 2025872 AMAQI
4th Nov 2025873 AMAQI
4th Nov 2025844 AMAQI
4th Nov 2025875 AMAQI
4th Nov 2025876 AMAQI
-5°C-13/1°C
4th Nov 2025927 AMAQI
4th Nov 2025948 AMAQI
4th Nov 2025989 AMAQI
4th Nov 20259910 AMAQI
4th Nov 202510211 AMAQI
4th Nov 20259512 PMAQI
4th Nov 2025791 PMAQI
4th Nov 2025652 PMAQI
4th Nov 2025593 PMAQI
4th Nov 2025634 PMAQI
4th Nov 2025735 PMAQI
4th Nov 2025876 PMAQI
4th Nov 2025977 PMAQI
4th Nov 2025888 PMAQI
4th Nov 20251049 PMAQI
4th Nov 202513810 PMAQI
4th Nov 202515311 PMAQI
5th Nov 202514712 AMAQI
5th Nov 20251421 AMAQI
5th Nov 20251482 AMAQI
5th Nov 20251523 AMAQI
5th Nov 20251484 AMAQI
5th Nov 20251535 AMAQI
5th Nov 20251576 AMAQI
-4°C-8/0°C
5th Nov 20251647 AMAQI
5th Nov 20251718 AMAQI
5th Nov 20251719 AMAQI
5th Nov 202515210 AMAQI
5th Nov 202516011 AMAQI
5th Nov 202516212 PMAQI
5th Nov 20251711 PMAQI
5th Nov 20251742 PMAQI
5th Nov 20251823 PMAQI
5th Nov 20251944 PMAQI
5th Nov 20252015 PMAQI
5th Nov 20252066 PMAQI
5th Nov 20251987 PMAQI
5th Nov 20252148 PMAQI
5th Nov 20252219 PMAQI
5th Nov 202520810 PMAQI
5th Nov 202519811 PMAQI
6th Nov 202519612 AMAQI
6th Nov 20251941 AMAQI
6th Nov 20251912 AMAQI
6th Nov 20251923 AMAQI
6th Nov 20251914 AMAQI
6th Nov 20251895 AMAQI
6th Nov 20251836 AMAQI
-7°C-11/-2°C
6th Nov 20251787 AMAQI
6th Nov 20251828 AMAQI
6th Nov 20251849 AMAQI
6th Nov 202517410 AMAQI
6th Nov 202517511 AMAQI
6th Nov 202517512 PMAQI
6th Nov 20251741 PMAQI
6th Nov 20251742 PMAQI
6th Nov 20251103 PMAQI
6th Nov 2025564 PMAQI
6th Nov 2025595 PMAQI
6th Nov 2025636 PMAQI
6th Nov 2025657 PMAQI
6th Nov 2025668 PMAQI
6th Nov 2025669 PMAQI
6th Nov 20256610 PMAQI
6th Nov 20258011 PMAQI
7th Nov 20258112 AMAQI
7th Nov 2025691 AMAQI
7th Nov 2025642 AMAQI
7th Nov 2025623 AMAQI
7th Nov 2025644 AMAQI
7th Nov 2025625 AMAQI
7th Nov 2025616 AMAQI
-5°C-8/-1°C
7th Nov 2025637 AMAQI
7th Nov 2025678 AMAQI
7th Nov 2025709 AMAQI
7th Nov 20256810 AMAQI
7th Nov 20255611 AMAQI
7th Nov 20252812 PMAQI
7th Nov 2025281 PMAQI
7th Nov 2025272 PMAQI
7th Nov 2025223 PMAQI
7th Nov 2025284 PMAQI
7th Nov 2025385 PMAQI
7th Nov 2025466 PMAQI
7th Nov 2025537 PMAQI
7th Nov 2025578 PMAQI
7th Nov 2025689 PMAQI
7th Nov 20256910 PMAQI
7th Nov 20257011 PMAQI
8th Nov 20256512 AMAQI
8th Nov 2025661 AMAQI
8th Nov 2025602 AMAQI
8th Nov 2025563 AMAQI
8th Nov 2025554 AMAQI
8th Nov 2025535 AMAQI
8th Nov 2025326 AMAQI
-9°C-13/-2°C
8th Nov 2025277 AMAQI
8th Nov 2025368 AMAQI
8th Nov 2025559 AMAQI
8th Nov 20256210 AMAQI
8th Nov 20256611 AMAQI
8th Nov 20257112 PMAQI
8th Nov 2025741 PMAQI
8th Nov 2025882 PMAQI
8th Nov 20251013 PMAQI
8th Nov 20251104 PMAQI
8th Nov 20251135 PMAQI
8th Nov 20251606 PMAQI
8th Nov 20251617 PMAQI
8th Nov 20251648 PMAQI
8th Nov 20251599 PMAQI
8th Nov 202517010 PMAQI
8th Nov 202517711 PMAQI
9th Nov 202517412 AMAQI
9th Nov 20251701 AMAQI
9th Nov 20251622 AMAQI
9th Nov 20251603 AMAQI
9th Nov 20251554 AMAQI
9th Nov 20251495 AMAQI
9th Nov 20251476 AMAQI
-8°C-15/-5°C
9th Nov 20251337 AMAQI
9th Nov 20251238 AMAQI
9th Nov 20251189 AMAQI
9th Nov 202510810 AMAQI
9th Nov 20259711 AMAQI
9th Nov 20259012 PMAQI
9th Nov 2025851 PMAQI
9th Nov 2025632 PMAQI
9th Nov 2025593 PMAQI
9th Nov 2025594 PMAQI
9th Nov 2025525 PMAQI
9th Nov 2025436 PMAQI
9th Nov 2025427 PMAQI
9th Nov 2025368 PMAQI
9th Nov 2025509 PMAQI
9th Nov 20255110 PMAQI
9th Nov 20254511 PMAQI
10th Nov 20253812 AMAQI
10th Nov 2025391 AMAQI
10th Nov 2025422 AMAQI
10th Nov 2025483 AMAQI
10th Nov 2025524 AMAQI
10th Nov 2025565 AMAQI
10th Nov 2025616 AMAQI
-6°C-11/-2°C
10th Nov 2025607 AMAQI
10th Nov 2025638 AMAQI
10th Nov 2025649 AMAQI
10th Nov 20256210 AMAQI
10th Nov 20256011 AMAQI
10th Nov 20255612 PMAQI
10th Nov 2025551 PMAQI
10th Nov 2025462 PMAQI
10th Nov 2025333 PMAQI
10th Nov 2025364 PMAQI
10th Nov 2025405 PMAQI
10th Nov 2025436 PMAQI
10th Nov 2025477 PMAQI
10th Nov 2025598 PMAQI
10th Nov 2025669 PMAQI
10th Nov 20257010 PMAQI
10th Nov 20257211 PMAQI
11th Nov 20257012 AMAQI
11th Nov 2025671 AMAQI
11th Nov 2025612 AMAQI
11th Nov 2025623 AMAQI
11th Nov 2025614 AMAQI
11th Nov 2025625 AMAQI
11th Nov 2025616 AMAQI
-9°C-15/-4°C
11th Nov 2025657 AMAQI
11th Nov 2025678 AMAQI
11th Nov 2025759 AMAQI
11th Nov 20257610 AMAQI
11th Nov 20258311 AMAQI
11th Nov 20257812 PMAQI
11th Nov 2025781 PMAQI
11th Nov 2025752 PMAQI
11th Nov 2025713 PMAQI
11th Nov 2025684 PMAQI
11th Nov 2025645 PMAQI
11th Nov 2025606 PMAQI
11th Nov 2025717 PMAQI
11th Nov 2025798 PMAQI
11th Nov 2025809 PMAQI
11th Nov 202510210 PMAQI
11th Nov 202510311 PMAQI
12th Nov 202512312 AMAQI
12th Nov 20251211 AMAQI
12th Nov 20251242 AMAQI
12th Nov 20251303 AMAQI
12th Nov 20251364 AMAQI
12th Nov 20251565 AMAQI
12th Nov 20251546 AMAQI
-11°C-16/-3°C
12th Nov 20251537 AMAQI
12th Nov 20251388 AMAQI
12th Nov 20251159 AMAQI
12th Nov 202512110 AMAQI
12th Nov 202513311 AMAQI
12th Nov 202510712 PMAQI
12th Nov 20251291 PMAQI
12th Nov 20251392 PMAQI
12th Nov 20251463 PMAQI
12th Nov 20251384 PMAQI
12th Nov 20251385 PMAQI
12th Nov 20251486 PMAQI
12th Nov 20251527 PMAQI
12th Nov 20251538 PMAQI
12th Nov 20251499 PMAQI
12th Nov 202513610 PMAQI
12th Nov 202511211 PMAQI
13th Nov 202512312 AMAQI
13th Nov 20251061 AMAQI
13th Nov 2025932 AMAQI
13th Nov 2025703 AMAQI
13th Nov 2025594 AMAQI
13th Nov 2025525 AMAQI
13th Nov 2025516 AMAQI
-6°C-11/0°C
13th Nov 2025427 AMAQI
13th Nov 2025418 AMAQI
13th Nov 2025499 AMAQI
13th Nov 20254810 AMAQI
13th Nov 20254211 AMAQI
13th Nov 20253612 PMAQI
13th Nov 2025321 PMAQI
13th Nov 2025302 PMAQI
13th Nov 2025293 PMAQI
13th Nov 2025374 PMAQI
13th Nov 2025505 PMAQI
13th Nov 2025676 PMAQI
13th Nov 2025797 PMAQI
13th Nov 2025968 PMAQI
13th Nov 2025979 PMAQI
13th Nov 202510010 PMAQI
13th Nov 20259711 PMAQI
14th Nov 202510412 AMAQI
14th Nov 2025931 AMAQI
14th Nov 20251302 AMAQI
14th Nov 20251563 AMAQI
14th Nov 20251474 AMAQI
14th Nov 20251325 AMAQI
14th Nov 20251316 AMAQI
-7°C-10/-4°C
14th Nov 20251277 AMAQI
14th Nov 20251228 AMAQI
14th Nov 20251209 AMAQI
14th Nov 202513410 AMAQI
14th Nov 202513611 AMAQI
14th Nov 202511812 PMAQI
14th Nov 2025951 PMAQI
14th Nov 2025912 PMAQI
14th Nov 2025683 PMAQI
14th Nov 2025614 PMAQI
14th Nov 2025655 PMAQI
14th Nov 2025756 PMAQI
14th Nov 2025847 PMAQI
14th Nov 2025908 PMAQI
14th Nov 2025919 PMAQI
14th Nov 20258910 PMAQI
14th Nov 20258211 PMAQI
15th Nov 20257312 AMAQI
15th Nov 2025751 AMAQI
15th Nov 2025772 AMAQI
15th Nov 2025723 AMAQI
15th Nov 2025674 AMAQI
15th Nov 2025665 AMAQI
15th Nov 2025696 AMAQI
-12°C-15/-5°C
15th Nov 2025707 AMAQI
15th Nov 2025788 AMAQI
15th Nov 2025879 AMAQI
15th Nov 20258510 AMAQI
15th Nov 20259011 AMAQI
15th Nov 20258812 PMAQI
15th Nov 2025931 PMAQI
15th Nov 2025962 PMAQI
15th Nov 2025993 PMAQI
15th Nov 2025984 PMAQI
15th Nov 20251115 PMAQI
15th Nov 20251086 PMAQI
15th Nov 20251027 PMAQI
15th Nov 20251408 PMAQI
15th Nov 20251459 PMAQI
15th Nov 202515010 PMAQI
15th Nov 202513211 PMAQI
16th Nov 202512212 AMAQI
16th Nov 20251581 AMAQI
16th Nov 20251692 AMAQI
16th Nov 20251663 AMAQI
16th Nov 20251664 AMAQI
16th Nov 20251635 AMAQI
16th Nov 20251596 AMAQI
-11°C-17/-7°C
16th Nov 20251007 AMAQI
16th Nov 2025868 AMAQI
16th Nov 2025819 AMAQI
16th Nov 20256410 AMAQI
16th Nov 20256411 AMAQI
16th Nov 20256012 PMAQI
16th Nov 2025541 PMAQI
16th Nov 2025562 PMAQI
16th Nov 2025643 PMAQI
16th Nov 2025744 PMAQI
16th Nov 2025885 PMAQI
16th Nov 2025856 PMAQI
16th Nov 2025937 PMAQI
16th Nov 2025978 PMAQI
16th Nov 20251049 PMAQI
16th Nov 202512510 PMAQI
16th Nov 20259311 PMAQI
17th Nov 20259012 AMAQI
17th Nov 2025791 AMAQI
17th Nov 2025802 AMAQI
17th Nov 2025743 AMAQI
17th Nov 2025694 AMAQI
17th Nov 2025555 AMAQI
17th Nov 2025456 AMAQI
-9°C-11/-7°C
17th Nov 2025447 AMAQI
17th Nov 2025328 AMAQI
17th Nov 2025249 AMAQI
17th Nov 20253110 AMAQI
17th Nov 20254011 AMAQI
17th Nov 20253912 PMAQI
17th Nov 2025251 PMAQI
17th Nov 2025222 PMAQI
17th Nov 2025203 PMAQI
17th Nov 2025244 PMAQI
17th Nov 2025385 PMAQI
17th Nov 2025526 PMAQI
17th Nov 2025687 PMAQI
17th Nov 2025858 PMAQI
17th Nov 2025869 PMAQI
17th Nov 20258310 PMAQI
17th Nov 20258311 PMAQI
18th Nov 20258112 AMAQI
18th Nov 2025861 AMAQI
18th Nov 2025902 AMAQI
18th Nov 2025853 AMAQI
18th Nov 2025784 AMAQI
18th Nov 2025845 AMAQI
18th Nov 2025846 AMAQI
-13°C-17/-9°C
18th Nov 2025857 AMAQI
18th Nov 2025938 AMAQI
18th Nov 2025899 AMAQI
18th Nov 20258410 AMAQI
18th Nov 202510011 AMAQI
18th Nov 20257712 PMAQI
18th Nov 2025701 PMAQI
18th Nov 2025572 PMAQI
18th Nov 2025593 PMAQI
18th Nov 2025624 PMAQI
18th Nov 2025555 PMAQI
18th Nov 2025616 PMAQI
18th Nov 2025757 PMAQI
18th Nov 2025808 PMAQI
18th Nov 2025789 PMAQI
18th Nov 20257610 PMAQI
18th Nov 202510611 PMAQI
19th Nov 202511612 AMAQI
19th Nov 20251161 AMAQI
19th Nov 20251202 AMAQI
19th Nov 20251183 AMAQI
19th Nov 20251254 AMAQI
19th Nov 20251045 AMAQI
19th Nov 20251146 AMAQI
-12°C-17/-4°C
19th Nov 20251057 AMAQI
19th Nov 20251118 AMAQI
19th Nov 20251369 AMAQI
19th Nov 202513010 AMAQI
19th Nov 202512811 AMAQI
19th Nov 202510412 PMAQI
19th Nov 2025841 PMAQI
19th Nov 20251182 PMAQI
19th Nov 20251303 PMAQI
19th Nov 20251654 PMAQI
19th Nov 20252025 PMAQI
19th Nov 20252006 PMAQI
19th Nov 20252337 PMAQI
19th Nov 20252448 PMAQI
19th Nov 20252139 PMAQI
19th Nov 202519610 PMAQI
19th Nov 202519611 PMAQI
20th Nov 202519412 AMAQI
20th Nov 20251921 AMAQI
20th Nov 20251862 AMAQI
20th Nov 20252033 AMAQI
20th Nov 20251804 AMAQI
20th Nov 20251765 AMAQI
20th Nov 20251726 AMAQI
-8°C-13/0°C
20th Nov 20251547 AMAQI
20th Nov 2025988 AMAQI
20th Nov 2025939 AMAQI
20th Nov 202515910 AMAQI
20th Nov 202516011 AMAQI
20th Nov 202515712 PMAQI
20th Nov 2025931 PMAQI
20th Nov 2025932 PMAQI
20th Nov 2025563 PMAQI
20th Nov 2025564 PMAQI
20th Nov 2025545 PMAQI
20th Nov 2025576 PMAQI
20th Nov 2025617 PMAQI
20th Nov 2025768 PMAQI
20th Nov 2025869 PMAQI
20th Nov 20258910 PMAQI
20th Nov 202510711 PMAQI
21st Nov 202513212 AMAQI
21st Nov 20251131 AMAQI
21st Nov 20251202 AMAQI
21st Nov 2025923 AMAQI
21st Nov 2025934 AMAQI
21st Nov 2025945 AMAQI
21st Nov 2025996 AMAQI
-8°C-11/-4°C
21st Nov 20251067 AMAQI
21st Nov 20251398 AMAQI
21st Nov 20251509 AMAQI
21st Nov 202511610 AMAQI
21st Nov 20258111 AMAQI
21st Nov 20257112 PMAQI
21st Nov 2025541 PMAQI
21st Nov 2025552 PMAQI
21st Nov 2025533 PMAQI
21st Nov 2025514 PMAQI
21st Nov 2025555 PMAQI
21st Nov 2025786 PMAQI
21st Nov 2025957 PMAQI
21st Nov 2025938 PMAQI
21st Nov 2025939 PMAQI
21st Nov 20259210 PMAQI
21st Nov 20259711 PMAQI
22nd Nov 202512512 AMAQI
22nd Nov 20251151 AMAQI
22nd Nov 20251152 AMAQI
22nd Nov 20251263 AMAQI
22nd Nov 20251324 AMAQI
22nd Nov 20251505 AMAQI
22nd Nov 20251566 AMAQI
-9°C-12/-3°C
22nd Nov 20251567 AMAQI
22nd Nov 20251548 AMAQI
22nd Nov 20251609 AMAQI
22nd Nov 202516210 AMAQI
22nd Nov 202515811 AMAQI
22nd Nov 202515712 PMAQI
22nd Nov 20251551 PMAQI
22nd Nov 20251572 PMAQI
22nd Nov 20251613 PMAQI
22nd Nov 20251644 PMAQI
22nd Nov 20251775 PMAQI
22nd Nov 20251906 PMAQI
22nd Nov 20251947 PMAQI
22nd Nov 20252028 PMAQI
22nd Nov 20252019 PMAQI
22nd Nov 202520410 PMAQI
22nd Nov 202520311 PMAQI
23rd Nov 202522012 AMAQI
23rd Nov 20252181 AMAQI
23rd Nov 20252272 AMAQI
23rd Nov 20252303 AMAQI
23rd Nov 20252304 AMAQI
23rd Nov 20252405 AMAQI
23rd Nov 20252396 AMAQI
-5°C-11/0°C
23rd Nov 20252247 AMAQI
23rd Nov 20252188 AMAQI
23rd Nov 20252149 AMAQI
23rd Nov 202520610 AMAQI
23rd Nov 202520111 AMAQI
23rd Nov 202521012 PMAQI
23rd Nov 20252231 PMAQI
23rd Nov 20252302 PMAQI
23rd Nov 20251893 PMAQI
23rd Nov 20251824 PMAQI
23rd Nov 20251925 PMAQI
23rd Nov 20251956 PMAQI
23rd Nov 20251907 PMAQI
23rd Nov 20251788 PMAQI
23rd Nov 20251809 PMAQI
23rd Nov 202518810 PMAQI
23rd Nov 202519411 PMAQI
24th Nov 202518812 AMAQI
24th Nov 20251911 AMAQI
24th Nov 20251742 AMAQI
24th Nov 20251803 AMAQI
24th Nov 20251544 AMAQI
24th Nov 20251245 AMAQI
24th Nov 20251196 AMAQI
-7°C-10/-1°C
24th Nov 2025927 AMAQI
24th Nov 2025868 AMAQI
24th Nov 2025829 AMAQI
24th Nov 20259410 AMAQI
24th Nov 202512811 AMAQI
24th Nov 202512012 PMAQI
24th Nov 20251241 PMAQI
24th Nov 2025972 PMAQI
24th Nov 2025743 PMAQI
24th Nov 2025684 PMAQI
24th Nov 2025625 PMAQI
24th Nov 2025636 PMAQI
24th Nov 2025597 PMAQI
24th Nov 2025638 PMAQI
24th Nov 2025589 PMAQI
24th Nov 20256010 PMAQI
24th Nov 20256011 PMAQI
25th Nov 20256312 AMAQI
25th Nov 2025621 AMAQI
25th Nov 2025562 AMAQI
25th Nov 2025543 AMAQI
25th Nov 2025454 AMAQI
25th Nov 2025525 AMAQI
25th Nov 2025566 AMAQI
-11°C-15/-6°C
25th Nov 2025547 AMAQI
25th Nov 2025608 AMAQI
25th Nov 2025639 AMAQI
25th Nov 20256710 AMAQI
25th Nov 20257411 AMAQI
25th Nov 20257712 PMAQI
25th Nov 2025781 PMAQI
25th Nov 2025682 PMAQI
25th Nov 2025573 PMAQI
25th Nov 2025584 PMAQI
25th Nov 2025605 PMAQI
25th Nov 2025676 PMAQI
25th Nov 2025827 PMAQI
25th Nov 2025988 PMAQI
25th Nov 20251089 PMAQI
25th Nov 202513010 PMAQI
25th Nov 202515611 PMAQI
26th Nov 202516212 AMAQI
26th Nov 20251631 AMAQI
26th Nov 20251572 AMAQI
26th Nov 20251603 AMAQI
26th Nov 20251634 AMAQI
26th Nov 20251605 AMAQI
26th Nov 20251606 AMAQI
-16°C-21/-11°C
26th Nov 20251597 AMAQI
26th Nov 20251578 AMAQI
26th Nov 20251559 AMAQI
26th Nov 202515510 AMAQI
26th Nov 202514811 AMAQI
26th Nov 202513512 PMAQI
26th Nov 20251331 PMAQI
26th Nov 20251432 PMAQI
26th Nov 20251523 PMAQI
26th Nov 20251534 PMAQI
26th Nov 20251505 PMAQI
26th Nov 20251546 PMAQI
26th Nov 20251577 PMAQI
26th Nov 20251548 PMAQI
26th Nov 20251419 PMAQI
26th Nov 202514010 PMAQI
26th Nov 202514611 PMAQI
27th Nov 202511812 AMAQI
27th Nov 20251591 AMAQI
27th Nov 20251592 AMAQI
27th Nov 20251583 AMAQI
27th Nov 20251524 AMAQI
27th Nov 20251235 AMAQI
27th Nov 20251216 AMAQI
-10°C-15/-5°C
27th Nov 20251517 AMAQI
7 AM27th Nov 20251618 AMAQI
27th Nov 20251609 AMAQI
27th Nov 202516010 AMAQI
11 AM
4 PM
11 PM
6 AM
--°C/°C
Day time
Avg. Highest Time
7 AM - 11 AM
111AQI
5 hours / Day
150 hours / Month
Avg. Lowest Time
3 PM - 4 PM
93AQI
2 hours / Day
60 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 7 AM to 11 AM (Avg. 111), while the lowest AQI was between 3 PM to 4 PM (Avg. 93).
Night time
Avg. Highest Time
12 AM - 6 AM
117AQI
7 hours / Day
210 hours / Month
Avg. Lowest Time
5 PM
97AQI
1 hours / Day
30 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 6 AM (Avg. 117), while the lowest AQI was between 5 PM to 5 PM (Avg. 97).
2025 Days Vs Air Quality
Seismological Bureau, Heihe, Heilongjiang, China
2025
25%
81
53%
174
16%
53
6%
20
0.6%
2
Total number of days with different AQI categories in last 331 days in 2025 (34 days remaining)
Good
81 DaysModerate
174 DaysPoor
53 DaysUnhealthy
20 DaysSevere
2 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 25%
Health Risk Level:
Very high
In 2025, 25% of 331 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
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.
-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
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
3rd August 2025
48AQI
48AQI
4th August 2025
46AQI
46AQI
5th August 2025
47AQI
47AQI
6th August 2025
44AQI
44AQI
7th August 2025
34AQI
34AQI
8th August 2025
36AQI
36AQI
9th August 2025
36AQI
36AQI
10th August 2025
31AQI
31AQI
11th August 2025
36AQI
36AQI
12th August 2025
43AQI
43AQI
13th August 2025
42AQI
42AQI
14th August 2025
42AQI
42AQI
15th August 2025
50AQI
50AQI
16th August 2025
45AQI
45AQI
17th August 2025
40AQI
40AQI
18th August 2025
39AQI
39AQI
19th August 2025
41AQI
41AQI
20th August 2025
42AQI
42AQI
21st August 2025
42AQI
42AQI
22nd August 2025
39AQI
39AQI
23rd August 2025
42AQI
42AQI
24th August 2025
43AQI
43AQI
25th August 2025
44AQI
44AQI
26th August 2025
40AQI
40AQI
27th August 2025
44AQI
44AQI
28th August 2025
47AQI
47AQI
29th August 2025
44AQI
44AQI
30th August 2025
50AQI
50AQI
31st August 2025
52AQI
52AQI
1st September 2025
45AQI
45AQI
2nd September 2025
48AQI
48AQI
3rd September 2025
53AQI
53AQI
4th September 2025
49AQI
49AQI
5th September 2025
54AQI
54AQI
6th September 2025
49AQI
49AQI
7th September 2025
46AQI
46AQI
8th September 2025
47AQI
47AQI
9th September 2025
48AQI
48AQI
10th September 2025
49AQI
49AQI
11th September 2025
45AQI
45AQI
12th September 2025
54AQI
54AQI
13th September 2025
51AQI
51AQI
14th September 2025
53AQI
53AQI
15th September 2025
45AQI
45AQI
16th September 2025
46AQI
46AQI
17th September 2025
42AQI
42AQI
18th September 2025
44AQI
44AQI
19th September 2025
46AQI
46AQI
20th September 2025
49AQI
49AQI
21st September 2025
46AQI
46AQI
22nd September 2025
47AQI
47AQI
23rd September 2025
56AQI
56AQI
24th September 2025
49AQI
49AQI
25th September 2025
38AQI
38AQI
26th September 2025
40AQI
40AQI
27th September 2025
34AQI
34AQI
28th September 2025
41AQI
41AQI
29th September 2025
35AQI
35AQI
30th September 2025
54AQI
54AQI
1st October 2025
53AQI
53AQI
2nd October 2025
65AQI
65AQI
3rd October 2025
85AQI
85AQI
4th October 2025
72AQI
72AQI
5th October 2025
53AQI
53AQI
6th October 2025
61AQI
61AQI
7th October 2025
76AQI
76AQI
8th October 2025
66AQI
66AQI
9th October 2025
76AQI
76AQI
10th October 2025
73AQI
73AQI
11th October 2025
78AQI
78AQI
12th October 2025
71AQI
71AQI
13th October 2025
72AQI
72AQI
14th October 2025
72AQI
72AQI
15th October 2025
104AQI
104AQI
16th October 2025
99AQI
99AQI
17th October 2025
103AQI
103AQI
18th October 2025
57AQI
57AQI
19th October 2025
65AQI
65AQI
20th October 2025
61AQI
61AQI
21st October 2025
70AQI
70AQI
22nd October 2025
75AQI
75AQI
23rd October 2025
66AQI
66AQI
24th October 2025
99AQI
99AQI
25th October 2025
159AQI
159AQI
26th October 2025
81AQI
81AQI
27th October 2025
80AQI
80AQI
28th October 2025
85AQI
85AQI
29th October 2025
154AQI
154AQI
30th October 2025
144AQI
144AQI
31st October 2025
125AQI
125AQI
1st November 2025
151AQI
151AQI
2nd November 2025
56AQI
56AQI
3rd November 2025
101AQI
101AQI
4th November 2025
93AQI
93AQI
5th November 2025
176AQI
176AQI
6th November 2025
138AQI
138AQI
7th November 2025
56AQI
56AQI
8th November 2025
94AQI
94AQI
9th November 2025
98AQI
98AQI
10th November 2025
53AQI
53AQI
11th November 2025
72AQI
72AQI
12th November 2025
136AQI
136AQI
13th November 2025
67AQI
67AQI
14th November 2025
106AQI
106AQI
15th November 2025
96AQI
96AQI
16th November 2025
108AQI
108AQI
17th November 2025
57AQI
57AQI
18th November 2025
79AQI
79AQI
19th November 2025
151AQI
151AQI
20th November 2025
124AQI
124AQI
21st November 2025
93AQI
93AQI
22nd November 2025
163AQI
163AQI
23rd November 2025
209AQI
209AQI
24th November 2025
105AQI
105AQI
25th November 2025
74AQI
74AQI
26th November 2025
157AQI
157AQI
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
148AQI
104AQI
80AQI
89AQI
68AQI
54AQI
49AQI
43AQI
47AQI
84AQI
108AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202579AQI
1
17
12
1
14
13
1
28
3
21
9
31
8
22
21
10
29
2
23
7
25
4
2
13
7
5
1
81
174
53
20
2
Highest AQI recorded in
January148AQI
Lowest AQI recorded in
August43AQI
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.)
79AQILeast Polluted Year Recorded
2020(Avg.)
42AQISeismological Bureau's annual 2025 AQI (79) shows an average percentage change of 46.5% (worsened AQI) compared to previous years: 2020 (42), 2021 (52), 2022 (49), 2023 (71), 2024 (66).
