Wenzhou, Zhejiang, 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
Wenzhou, Zhejiang, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	46	54	59	28	77
Jul. 2	48	51	47	38	83
Jul. 3		54	50	48	76
Jul. 4		58	68	56	55
Jul. 5		60	70	52	39
Jul. 6		56	76	45	34
Jul. 7		54	81	51	67
Jul. 8		53	83	61	76
Jul. 9		61	100	64	73
Jul. 10		72	73	67	72
Jul. 11		72	57	64	72
Jul. 12		80	59	81	66
Jul. 13		64	58	62	58
Jul. 14		63	43	76	42
Jul. 15		47	40	87	38
Jul. 16		35	23	99	29
Jul. 17		51	28	90	33
Jul. 18		61	49	66	47
Jul. 19		56	64	63	55
Jul. 20		45	66	68	39
Jul. 21		50	72	66	42
Jul. 22		35	68	64	36
Jul. 23		32	69	87	28
Jul. 24		30	55	95	26
Jul. 25		30	29		20
Jul. 26		32	27	41	54
Jul. 27		36	19		67
Jul. 28		37	40		66
Jul. 29		29	45		73
Jul. 30		34	42		76
Jul. 31		44	59		67

AQI Trends: Highest and Lowest

Highest AQI recorded on

9th Jul 2023

100AQI

Lowest AQI recorded on

27th Jul 2023

19AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 48 of Good air quality, showing improvement over 2024 and 2021 on the same day.

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Wenzhou, Zhejiang, China

AQI

Day

Night

5 AM3rd Jul 2025

6 PM

4 AM4th Jul 2025

Day time

Avg. Highest Time

12AMNaNth undefined

AQI

Avg. Lowest Time

12AMNaNth undefined

AQI

Night time

Avg. Highest Time

5PM3rd Jul

58AQI

Avg. Lowest Time

4PM3rd Jul

40AQI

In the last 24 hours,

Wenzhou's AQI reached its highest point of 58 at 5 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 3rd Jul and 4th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Wenzhou, Zhejiang, China

JunJul

04th - 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 - 04th04th

Day

Night

23°C18/29°C

25°C20/31°C

27°C22/33°C

26°C23/33°C

26°C23/31°C

23°C21/24°C

24°C21/28°C

24°C22/26°C

28°C24/34°C

28°C25/33°C

26°C21/32°C

27°C23/32°C

27°C22/34°C

27°C24/32°C

28°C24/33°C

28°C23/35°C

27°C23/33°C

26°C23/31°C

26°C23/32°C

27°C23/31°C

28°C23/34°C

29°C25/34°C

28°C24/33°C

29°C26/33°C

29°C26/34°C

0°C0/0°C

5 AM

11 AM

6 PM

11 PM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

5 AM - 7 AM

59AQI

3 hours / Day

90 hours / Month

Avg. Lowest Time

8 AM - 6 PM

54AQI

11 hours / Day

330 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 AM (Avg. 59), while the lowest AQI was between 8 AM to 6 PM (Avg. 54).

Night time

Avg. Highest Time

1 AM - 4 AM

59AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

7 PM - 11 PM

55AQI

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. 59), while the lowest AQI was between 7 PM to 11 PM (Avg. 55).

2025 Days Vs Air Quality
Wenzhou, Zhejiang, China

2025

73%

133

22%

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

Good

10 Days

Moderate

133 Days

Poor

40 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 5%

Health Risk Level:

Extreme

In 2025, 5% 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
Wenzhou, Zhejiang, 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.

104AQI

99AQI

87AQI

85AQI

71AQI

58AQI

47AQI

No. of days

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

202583AQI

133

Highest AQI recorded in

January

104AQI

Lowest AQI recorded in

July

47AQI

202474AQI

216

Highest AQI recorded in

January

120AQI

Lowest AQI recorded in

July

50AQI

202379AQI

225

Highest AQI recorded in

December

101AQI

Lowest AQI recorded in

September

55AQI

202273AQI

218

Highest AQI recorded in

January

97AQI

Lowest AQI recorded in

October

59AQI

202176AQI

239

Highest AQI recorded in

January

101AQI

Lowest AQI recorded in

August

53AQI

202073AQI

194

Highest AQI recorded in

April

96AQI

Lowest AQI recorded in

August

55AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

83AQI

Least Polluted Year Recorded

2022(Avg.)

73AQI

Wenzhou's annual 2025 AQI (83) shows an average percentage change of 11.5% (worsened AQI) compared to previous years: 2020 (73), 2021 (76), 2022 (73), 2023 (79), 2024 (74).


5 AM	51
6 AM	51
7 AM	51
8 AM	47
9 AM	42
10 AM	40
11 AM	40
12 PM	40
1 PM	40
2 PM	40
3 PM	40
4 PM	40
5 PM	58
6 PM	58
7 PM	58
8 PM	56
9 PM	55
10 PM	52
11 PM	51
12 AM	50
1 AM
2 AM
3 AM
4 AM

Wenzhou, Zhejiang, China Historical Air Quality Analysis

July Air Quality AnalysisWenzhou, Zhejiang, China

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025Wenzhou, Zhejiang, China

Day & Night AQI Trend : Jun - Jul 2025Wenzhou, Zhejiang, China

2025 Days Vs Air Quality Wenzhou, Zhejiang, China

Annual Air Quality InsightsWenzhou, Zhejiang, China

AQI levels in 2025

No. of days

July Air Quality Analysis
Wenzhou, Zhejiang, China

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Wenzhou, Zhejiang, China

Day & Night AQI Trend : Jun - Jul 2025
Wenzhou, Zhejiang, China

2025 Days Vs Air Quality
Wenzhou, Zhejiang, China

Annual Air Quality Insights
Wenzhou, Zhejiang, China