Tap Mun, Hong Kong, 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
Tap Mun, Hong Kong, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	23	34	20	22	40
Jul. 2	25	32	14	27	41
Jul. 3		26	17	30	40
Jul. 4		33	16	30	36
Jul. 5		29	19	26	22
Jul. 6		25	16	30	17
Jul. 7		24	30	20	21
Jul. 8		35	34	20	19
Jul. 9		27	13	16	31
Jul. 10		27	15	16	30
Jul. 11		22	16	19	18
Jul. 12		24	16		17
Jul. 13		22	20		17
Jul. 14		29	27	18	28
Jul. 15		20	45	18	14
Jul. 16		23	35	22	15
Jul. 17		21	34	26	21
Jul. 18		22	32	26	20
Jul. 19		27	18	22	19
Jul. 20		26	17	18	23
Jul. 21		23	16		27
Jul. 22		24	16	30	32
Jul. 23		32	14	46	82
Jul. 24		47	15	50	71
Jul. 25		64	21		53
Jul. 26		53	82		41
Jul. 27		38	53		66
Jul. 28		27	50		52
Jul. 29		25	44		37
Jul. 30		20	24		24
Jul. 31		24	20		30

AQI Trends: Highest and Lowest

Highest AQI recorded on

23rd Jul 2021

82AQI

Lowest AQI recorded on

9th Jul 2023

13AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Tap Mun, Hong Kong, China

AQI

Day

Night

5 AM2nd Jul 2025

7 PM

4 AM3rd Jul 2025

Day time

Avg. Highest Time

5AM2nd Jul

27AQI

Avg. Lowest Time

9AM2nd Jul

20AQI

Night time

Avg. Highest Time

2AM3rd Jul

29AQI

Avg. Lowest Time

12AM3rd Jul

22AQI

In the last 24 hours,

Tap Mun's AQI reached its highest point of 29 at 2 AM during the Night, while the lowest point, 20, was recorded at 9 AM during the Day between 2nd Jul and 3rd Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Tap Mun, Hong Kong, 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

28°C27/30°C

26°C24/26°C

26°C24/28°C

27°C25/30°C

28°C26/31°C

29°C27/32°C

30°C27/33°C

29°C28/32°C

28°C27/31°C

28°C26/30°C

28°C27/30°C

28°C27/31°C

26°C25/26°C

27°C26/30°C

28°C26/30°C

29°C27/31°C

29°C27/32°C

29°C27/30°C

29°C26/31°C

28°C27/30°C

28°C26/30°C

28°C26/31°C

28°C27/31°C

29°C27/31°C

5 AM

12 PM

7 PM

12 AM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

5 AM - 7 AM

36AQI

3 hours / Day

90 hours / Month

Avg. Lowest Time

9 AM - 1 PM

26AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 36), while the lowest AQI was between 9 AM to 1 PM (Avg. 26).

Night time

Avg. Highest Time

1 AM - 4 AM

36AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

12 AM

28AQI

1 hours / Day

30 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 36), while the lowest AQI was between 12 AM to 12 AM (Avg. 28).

2025 Days Vs Air Quality
Tap Mun, Hong Kong, China

2025

38%

60%

110

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

Good

69 Days

Moderate

110 Days

Poor

4 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 38%

Health Risk Level:

High

In 2025, 38% of 184 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
Tap Mun, Hong Kong, 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.

79AQI

62AQI

53AQI

65AQI

51AQI

32AQI

24AQI

No. of days

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

202557AQI

110

Highest AQI recorded in

January

79AQI

Lowest AQI recorded in

July

24AQI

202450AQI

200

155

Highest AQI recorded in

December

83AQI

Lowest AQI recorded in

July

29AQI

202347AQI

202

160

Highest AQI recorded in

January

64AQI

Lowest AQI recorded in

June

25AQI

202248AQI

178

120

Highest AQI recorded in

September

71AQI

Lowest AQI recorded in

June

21AQI

202149AQI

188

171

Highest AQI recorded in

January

76AQI

Lowest AQI recorded in

August

29AQI

202048AQI

140

119

Highest AQI recorded in

December

80AQI

Lowest AQI recorded in

June

18AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

57AQI

Least Polluted Year Recorded

2023(Avg.)

47AQI

Tap Mun's annual 2025 AQI (57) shows an average percentage change of 17.5% (worsened AQI) compared to previous years: 2020 (48), 2021 (49), 2022 (48), 2023 (47), 2024 (50).


5 AM	27
6 AM	26
7 AM	27
8 AM	22
9 AM	20
10 AM	21
11 AM	23
12 PM	25
1 PM	26
2 PM	25
3 PM	23
4 PM	22
5 PM	23
6 PM	26
7 PM	23
8 PM	22
9 PM	22
10 PM	22
11 PM	22
12 AM	22
1 AM	27
2 AM	29
3 AM	28
4 AM	28

Tap Mun, Hong Kong, China Historical Air Quality Analysis

July Air Quality AnalysisTap Mun, Hong Kong, China

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025Tap Mun, Hong Kong, China

Day & Night AQI Trend : Jun - Jul 2025Tap Mun, Hong Kong, China

2025 Days Vs Air Quality Tap Mun, Hong Kong, China

Annual Air Quality InsightsTap Mun, Hong Kong, China

AQI levels in 2025

No. of days

July Air Quality Analysis
Tap Mun, Hong Kong, China

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Tap Mun, Hong Kong, China

Day & Night AQI Trend : Jun - Jul 2025
Tap Mun, Hong Kong, China

2025 Days Vs Air Quality
Tap Mun, Hong Kong, China

Annual Air Quality Insights
Tap Mun, Hong Kong, China