Hongwen, Xiamen, Fujian, 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+

September Air Quality Analysis
Hongwen, Xiamen, Fujian, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Sep. 1	56	62	28		61
Sep. 2	61	84	36	61	41
Sep. 3	60	62	22	48	40
Sep. 4	54	47	13	47	29
Sep. 5	62	43	20	47	45
Sep. 6	62	35	23	68	36
Sep. 7	58	28	45	65	47
Sep. 8	47	30	51	59	48
Sep. 9	47	29	35	90	49
Sep. 10	53	76	37	85	38
Sep. 11	55	88	38	74	26
Sep. 12	54	84	38	88	29
Sep. 13	56	36	42	97	62
Sep. 14	57	33	32	104	82
Sep. 15	58	55	37	59	75
Sep. 16	57	49	51	75	59
Sep. 17		34	68	61	75
Sep. 18		42	22	78	68
Sep. 19		51	41	102	62
Sep. 20		32	56	78	51
Sep. 21		39	69	60	51
Sep. 22		15	58	62	45
Sep. 23		26	44	70	50
Sep. 24		28	45	66	37
Sep. 25		48	49	63	52
Sep. 26		44	54	64	65
Sep. 27		45	48	54	66
Sep. 28		37	59	53	72
Sep. 29		45	59	59	88
Sep. 30		22	61	59	96

AQI Trends: Highest and Lowest

Highest AQI recorded on

14th Sep 2022

104AQI

Lowest AQI recorded on

4th Sep 2023

13AQI

Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 57 of Moderate air quality, showing improvement over 2022 and 2021 on the same day.

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Hongwen, Xiamen, Fujian, China

AQI

Day

Night

5 AM17th Sep 2025

6 PM

4 AM18th Sep 2025

Day time

Avg. Highest Time

2PM17th Sep

60AQI

Avg. Lowest Time

9AM17th Sep

33AQI

Night time

Avg. Highest Time

1AM18th Sep

57AQI

Avg. Lowest Time

11PM17th Sep

49AQI

In the last 24 hours,

Hongwen's AQI reached its highest point of 60 at 2 PM during the Day, while the lowest point, 33, was recorded at 9 AM during the Day between 17th Sep and 18th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025
Hongwen, Xiamen, Fujian, China

AugSep

19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th

Day

Night

28°C26/29°C

27°C26/29°C

28°C26/29°C

28°C26/31°C

29°C27/31°C

28°C27/31°C

28°C26/31°C

28°C26/30°C

28°C26/31°C

29°C27/31°C

28°C26/30°C

28°C27/29°C

27°C26/28°C

28°C26/30°C

29°C27/32°C

28°C27/30°C

28°C26/29°C

28°C27/30°C

28°C27/31°C

28°C26/30°C

28°C26/31°C

29°C27/32°C

28°C27/31°C

28°C27/30°C

28°C26/30°C

28°C26/31°C

5 AM

11 AM

6 PM

11 PM

4 AM

--°C/°C

Day time

Avg. Highest Time

10 AM - 2 PM

55AQI

5 hours / Day

150 hours / Month

Avg. Lowest Time

5 PM

46AQI

1 hours / Day

30 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 10 AM to 2 PM (Avg. 55), while the lowest AQI was between 5 PM to 5 PM (Avg. 46).

Night time

Avg. Highest Time

1 AM - 4 AM

54AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

7 PM - 11 PM

52AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 1 AM to 4 AM (Avg. 54), while the lowest AQI was between 7 PM to 11 PM (Avg. 52).

2025 Days Vs Air Quality
Hongwen, Xiamen, Fujian, China

2025

30%

68%

176

Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)

Good

77 Days

Moderate

176 Days

Poor

6 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 30%

Health Risk Level:

High

In 2025, 30% of 261 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
Hongwen, Xiamen, Fujian, 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.

83AQI

76AQI

68AQI

71AQI

62AQI

45AQI

50AQI

48AQI

56AQI

No. of days

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

202562AQI

176

Highest AQI recorded in

January

83AQI

Lowest AQI recorded in

June

45AQI

202461AQI

138

198

Highest AQI recorded in

January

100AQI

Lowest AQI recorded in

July

27AQI

202364AQI

114

217

Highest AQI recorded in

March

83AQI

Lowest AQI recorded in

July

35AQI

202261AQI

116

175

Highest AQI recorded in

March

89AQI

Lowest AQI recorded in

June

35AQI

202170AQI

217

Highest AQI recorded in

January

97AQI

Lowest AQI recorded in

July

48AQI

202054AQI

115

141

Highest AQI recorded in

December

73AQI

Lowest AQI recorded in

June

31AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2021(Avg.)

70AQI

Least Polluted Year Recorded

2020(Avg.)

54AQI

Hongwen's annual 2025 AQI (62) shows an average percentage change of 1.1% (worsened AQI) compared to previous years: 2020 (54), 2021 (70), 2022 (61), 2023 (64), 2024 (61).


5 AM	57
6 AM	57
7 AM	58
8 AM	41
9 AM	33
10 AM	34
11 AM	46
12 PM	48
1 PM	52
2 PM	60
3 PM	58
4 PM	58
5 PM	49
6 PM	58
7 PM	52
8 PM	54
9 PM	54
10 PM	50
11 PM	49
12 AM	50
1 AM	57
2 AM	56
3 AM	56
4 AM	55

Hongwen, Xiamen, Fujian, China Historical Air Quality Analysis

September Air Quality AnalysisHongwen, Xiamen, Fujian, China

Day & Night AQI Trend: 17th Sep - 18th Sep 2025Hongwen, Xiamen, Fujian, China

Day & Night AQI Trend : Aug - Sep 2025Hongwen, Xiamen, Fujian, China

2025 Days Vs Air Quality Hongwen, Xiamen, Fujian, China

Annual Air Quality InsightsHongwen, Xiamen, Fujian, China

AQI levels in 2025

No. of days

September Air Quality Analysis
Hongwen, Xiamen, Fujian, China

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Hongwen, Xiamen, Fujian, China

Day & Night AQI Trend : Aug - Sep 2025
Hongwen, Xiamen, Fujian, China

2025 Days Vs Air Quality
Hongwen, Xiamen, Fujian, China

Annual Air Quality Insights
Hongwen, Xiamen, Fujian, China