Hulan Normal College, Harbin, 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+

July Air Quality Analysis
Hulan Normal College, Harbin, Heilongjiang, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	52	71	44	54	41
Jul. 2	55	85	46	60	54
Jul. 3		79	62	59	75
Jul. 4		45	64	79	55
Jul. 5		57	45	94	36
Jul. 6		78	34	68	49
Jul. 7		129	51	53	54
Jul. 8		113	53	36	64
Jul. 9		105	53	43	64
Jul. 10		152	46	44	75
Jul. 11		159	90	56	64
Jul. 12		104	108	74	101
Jul. 13		127	73	64	88
Jul. 14		99	40	40	69
Jul. 15		129	17	29	46
Jul. 16		90	20	32	44
Jul. 17		54	16	30	42
Jul. 18		53	33	32	63
Jul. 19		68	64	42	57
Jul. 20		69	85	53	56
Jul. 21		60	25	51	57
Jul. 22		68	38	36	62
Jul. 23		64	28	40	66
Jul. 24		53	24	42	69
Jul. 25		45	50		70
Jul. 26		41	60		61
Jul. 27		33	122		66
Jul. 28		39	73		54
Jul. 29		35	65		50
Jul. 30		46	44		69
Jul. 31		42	46		57

AQI Trends: Highest and Lowest

Highest AQI recorded on

11th Jul 2024

159AQI

Lowest AQI recorded on

17th Jul 2023

16AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 55 of Moderate air quality, showing improvement over 2024 and 2022 on the same day.

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Hulan Normal College, Harbin, Heilongjiang, China

AQI

Day

Night

5 AM2nd Jul 2025

9 PM

4 AM3rd Jul 2025

Day time

Avg. Highest Time

6AM2nd Jul

60AQI

Avg. Lowest Time

10AM2nd Jul

34AQI

Night time

Avg. Highest Time

2AM3rd Jul

61AQI

Avg. Lowest Time

12AM3rd Jul

57AQI

In the last 24 hours,

Hulan Normal College's AQI reached its highest point of 61 at 2 AM during the Night, while the lowest point, 34, was recorded at 10 AM during the Day between 2nd Jul and 3rd Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Hulan Normal College, Harbin, Heilongjiang, China

JunJul

03rd - 04th04th - 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

Day

Night

16°C12/20°C

18°C11/24°C

16°C13/20°C

16°C11/21°C

17°C13/22°C

21°C14/28°C

18°C13/23°C

13°C12/14°C

20°C13/26°C

21°C17/26°C

22°C19/27°C

22°C18/27°C

24°C19/29°C

22°C18/28°C

20°C16/24°C

23°C15/30°C

23°C18/27°C

20°C17/25°C

17°C13/20°C

23°C16/30°C

27°C18/34°C

28°C21/36°C

29°C23/36°C

30°C24/36°C

29°C23/36°C

24°C21/29°C

25°C20/29°C

24°C21/28°C

27°C22/32°C

5 AM

1 PM

9 PM

1 AM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

5 AM - 7 AM

55AQI

3 hours / Day

90 hours / Month

Avg. Lowest Time

9 AM - 5 PM

46AQI

9 hours / Day

270 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 55), while the lowest AQI was between 9 AM to 5 PM (Avg. 46).

Night time

Avg. Highest Time

12 AM - 11 PM

55AQI

7 hours / Day

210 hours / Month

Avg. Lowest Time

12 AM - 11 PM

55AQI

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. 55), while the lowest AQI was between 12 AM to 11 PM (Avg. 55).

2025 Days Vs Air Quality
Hulan Normal College, Harbin, Heilongjiang, China

2025

56%

102

19%

14%

Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)

Good

15 Days

Moderate

102 Days

Poor

34 Days

Unhealthy

25 Days

Severe

7 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 8%

Health Risk Level:

Extreme

In 2025, 8% of 184 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
Hulan Normal College, Harbin, Heilongjiang, China

AQI levels in 2025

AQI

PM2.5

PM10

SO2

NO2

Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

172AQI

115AQI

90AQI

98AQI

72AQI

52AQI

54AQI

No. of days

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

202599AQI

102

Highest AQI recorded in

January

172AQI

Lowest AQI recorded in

June

52AQI

202497AQI

140

104

Highest AQI recorded in

January

159AQI

Lowest AQI recorded in

August

45AQI

202395AQI

142

Highest AQI recorded in

January

159AQI

Lowest AQI recorded in

August

40AQI

202299AQI

136

Highest AQI recorded in

January

194AQI

Lowest AQI recorded in

June

50AQI

202191AQI

154

Highest AQI recorded in

January

152AQI

Lowest AQI recorded in

September

46AQI

202077AQI

111

Highest AQI recorded in

April

143AQI

Lowest AQI recorded in

June

43AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

99AQI

Least Polluted Year Recorded

2020(Avg.)

77AQI

Hulan Normal College's annual 2025 AQI (99) shows an average percentage change of 9.06% (worsened AQI) compared to previous years: 2020 (77), 2021 (91), 2022 (99), 2023 (95), 2024 (97).


5 AM	59
6 AM	60
7 AM	60
8 AM	45
9 AM	36
10 AM	34
11 AM	39
12 PM	48
1 PM	48
2 PM	46
3 PM	50
4 PM	50
5 PM	52
6 PM	53
7 PM	57
8 PM	57
9 PM	57
10 PM	57
11 PM	57
12 AM	57
1 AM	60
2 AM	61
3 AM	61
4 AM	61

Hulan Normal College, Harbin, Heilongjiang, China Historical Air Quality Analysis

July Air Quality AnalysisHulan Normal College, Harbin, Heilongjiang, China

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025Hulan Normal College, Harbin, Heilongjiang, China

Day & Night AQI Trend : Jun - Jul 2025Hulan Normal College, Harbin, Heilongjiang, China

2025 Days Vs Air Quality Hulan Normal College, Harbin, Heilongjiang, China

Annual Air Quality InsightsHulan Normal College, Harbin, Heilongjiang, China

AQI levels in 2025

No. of days

July Air Quality Analysis
Hulan Normal College, Harbin, Heilongjiang, China

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Hulan Normal College, Harbin, Heilongjiang, China

Day & Night AQI Trend : Jun - Jul 2025
Hulan Normal College, Harbin, Heilongjiang, China

2025 Days Vs Air Quality
Hulan Normal College, Harbin, Heilongjiang, China

Annual Air Quality Insights
Hulan Normal College, Harbin, Heilongjiang, China