D D Port, Dalian, Liaoning, 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
D D Port, Dalian, Liaoning, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	59	99	73	37	86
Jul. 2	55	43	50	42	62
Jul. 3		68	39	50	59
Jul. 4		85	54	43	29
Jul. 5		82	78	54	47
Jul. 6		35	91	48	40
Jul. 7		88	90	41	48
Jul. 8		81	48	85	46
Jul. 9		111	65	100	49
Jul. 10		78	88	71	51
Jul. 11		95	93	54	60
Jul. 12		125	60		44
Jul. 13		108	46		42
Jul. 14		77	76	30	47
Jul. 15		60	48	54	35
Jul. 16		34	41	46	26
Jul. 17		63	47	82	28
Jul. 18		87	57	66	31
Jul. 19		98	93	60	41
Jul. 20		25	108	66	42
Jul. 21		63	80		45
Jul. 22		48	42	86	32
Jul. 23		44	73	29	63
Jul. 24		43	77	119	49
Jul. 25		29	68		61
Jul. 26		40	47		63
Jul. 27		28	28		40
Jul. 28		41	43		56
Jul. 29		48	19		38
Jul. 30		72	46		37
Jul. 31		48			32

AQI Trends: Highest and Lowest

Highest AQI recorded on

12th Jul 2024

125AQI

Lowest AQI recorded on

29th Jul 2023

19AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 55 of Moderate air quality, showing improvement over 2021 on the same day.

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
D D Port, Dalian, Liaoning, China

AQI

Day

Night

4 AM2nd Jul 2025

7 PM

3 AM3rd Jul 2025

Day time

Avg. Highest Time

4AM2nd Jul

61AQI

Avg. Lowest Time

9AM2nd Jul

24AQI

Night time

Avg. Highest Time

2AM3rd Jul

60AQI

Avg. Lowest Time

12AM3rd Jul

55AQI

In the last 24 hours,

D D Port's AQI reached its highest point of 61 at 4 AM during the Day, while the lowest point, 24, was recorded at 9 AM during the Day between 2nd Jul and 3rd Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
D D Port, Dalian, Liaoning, 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

19°C17/22°C

20°C16/23°C

22°C18/25°C

21°C18/24°C

21°C18/23°C

20°C17/24°C

20°C16/22°C

22°C19/25°C

22°C20/25°C

21°C19/23°C

20°C19/23°C

20°C18/22°C

22°C19/25°C

23°C20/27°C

21°C20/23°C

23°C20/26°C

23°C20/27°C

24°C21/26°C

25°C22/27°C

24°C21/27°C

23°C21/26°C

21°C20/21°C

23°C21/24°C

23°C21/26°C

23°C22/25°C

24°C22/28°C

24°C22/26°C

4 AM

11 AM

7 PM

11 PM

3 AM

0°C0/0°C

Day time

Avg. Highest Time

4 AM - 8 AM

60AQI

5 hours / Day

150 hours / Month

Avg. Lowest Time

9 AM - 6 PM

53AQI

10 hours / Day

300 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 4 AM to 8 AM (Avg. 60), while the lowest AQI was between 9 AM to 6 PM (Avg. 53).

Night time

Avg. Highest Time

12 AM - 11 PM

59AQI

8 hours / Day

240 hours / Month

Avg. Lowest Time

12 AM - 11 PM

59AQI

8 hours / Day

240 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 59), while the lowest AQI was between 12 AM to 11 PM (Avg. 59).

2025 Days Vs Air Quality
D D Port, Dalian, Liaoning, China

2025

77%

140

16%

0.5%

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

Good

12 Days

Moderate

140 Days

Poor

30 Days

Unhealthy

1 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 7%

Health Risk Level:

Extreme

In 2025, 7% 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
D D Port, Dalian, Liaoning, 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.

88AQI

79AQI

99AQI

75AQI

73AQI

59AQI

57AQI

No. of days

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

202578AQI

140

Highest AQI recorded in

March

99AQI

Lowest AQI recorded in

July

57AQI

202473AQI

200

Highest AQI recorded in

February

104AQI

Lowest AQI recorded in

September

54AQI

202378AQI

208

Highest AQI recorded in

February

99AQI

Lowest AQI recorded in

August

58AQI

202273AQI

154

Highest AQI recorded in

August

122AQI

Lowest AQI recorded in

September

48AQI

202174AQI

109

185

Highest AQI recorded in

March

118AQI

Lowest AQI recorded in

July

46AQI

202070AQI

149

Highest AQI recorded in

April

98AQI

Lowest AQI recorded in

August

50AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

78AQI

Least Polluted Year Recorded

2020(Avg.)

70AQI

D D Port's annual 2025 AQI (78) shows an average percentage change of 6.5% (worsened AQI) compared to previous years: 2020 (70), 2021 (74), 2022 (73), 2023 (78), 2024 (73).


4 AM	61
5 AM	61
6 AM	61
7 AM	60
8 AM	38
9 AM	24
10 AM	27
11 AM	32
12 PM	46
1 PM	47
2 PM	50
3 PM	53
4 PM	54
5 PM	56
6 PM	57
7 PM	55
8 PM	55
9 PM	55
10 PM	55
11 PM	55
12 AM	55
1 AM	58
2 AM	60
3 AM	59

D D Port, Dalian, Liaoning, China Historical Air Quality Analysis

July Air Quality AnalysisD D Port, Dalian, Liaoning, China

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025D D Port, Dalian, Liaoning, China

Day & Night AQI Trend : Jun - Jul 2025D D Port, Dalian, Liaoning, China

2025 Days Vs Air Quality D D Port, Dalian, Liaoning, China

Annual Air Quality InsightsD D Port, Dalian, Liaoning, China

AQI levels in 2025

No. of days

July Air Quality Analysis
D D Port, Dalian, Liaoning, China

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
D D Port, Dalian, Liaoning, China

Day & Night AQI Trend : Jun - Jul 2025
D D Port, Dalian, Liaoning, China

2025 Days Vs Air Quality
D D Port, Dalian, Liaoning, China

Annual Air Quality Insights
D D Port, Dalian, Liaoning, China