City Station, 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+

October Air Quality Analysis
City Station, Wenzhou, Zhejiang, China

2021

2022

2023

2024

AQI

Days

Days	2024	2023	2022	2021
Oct. 1	41	50	58	63
Oct. 2	43	53	50	61
Oct. 3	41	59	55	55
Oct. 4	40	53	64	47
Oct. 5	61	53	48	49
Oct. 6	38	48	61	45
Oct. 7	43	25	37	40
Oct. 8	29	35	36	41
Oct. 9	79	64	45	38
Oct. 10	70	87	47	47
Oct. 11	96	62	52	31
Oct. 12	71	68	54	26
Oct. 13	77	94	53	24
Oct. 14	77	106	67	36
Oct. 15	61	109	85	53
Oct. 16	68	112	85	39
Oct. 17	80	125	71	38
Oct. 18	83	112	51	66
Oct. 19	63	98	55	69
Oct. 20	36	44	58	58
Oct. 21	71	52	66	34
Oct. 22	77	55	81	92
Oct. 23	55	79	100	106
Oct. 24	64	81	75	75
Oct. 25	58	87	50	58
Oct. 26	46	107	57	63
Oct. 27	40	94	48	79
Oct. 28	36	86	32	78
Oct. 29	104	54	62	64
Oct. 30	82	64	64	95
Oct. 31	53	58	55	110

AQI Trends: Highest and Lowest

Highest AQI recorded on

17th Oct 2023

125AQI

Lowest AQI recorded on

13th Oct 2021

24AQI

Same Day Analysis (31st October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
City Station, Wenzhou, Zhejiang, China

AQI

Day

Night

5 AM2nd Oct 2025

6 PM

4 AM3rd Oct 2025

Day time

Avg. Highest Time

12AMNaNth undefined

AQI

Avg. Lowest Time

12AMNaNth undefined

AQI

Night time

Avg. Highest Time

8AM2nd Oct

81AQI

Avg. Lowest Time

7PM2nd Oct

29AQI

In the last 24 hours,

City Station's AQI reached its highest point of 81 at 8 AM during the Night, while the lowest point, 29, was recorded at 7 PM during the Night between 2nd Oct and 3rd Oct 2025.

Day & Night AQI Trend : Sep - Oct 2025
City Station, Wenzhou, Zhejiang, China

SepOct

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°C24/33°C

29°C25/35°C

29°C25/34°C

29°C24/35°C

29°C24/37°C

26°C22/30°C

26°C23/30°C

27°C23/33°C

28°C24/35°C

28°C23/34°C

28°C24/33°C

29°C25/34°C

27°C23/34°C

26°C23/29°C

25°C23/30°C

24°C22/28°C

25°C22/29°C

25°C23/28°C

26°C23/28°C

26°C22/30°C

26°C22/32°C

27°C23/32°C

28°C25/33°C

27°C23/32°C

27°C23/33°C

25°C22/30°C

--°C/°C

5 AM

11 AM

6 PM

11 PM

4 AM

--°C/°C

Day time

Avg. Highest Time

5 AM - 7 AM

55AQI

3 hours / Day

90 hours / Month

Avg. Lowest Time

12 PM - 5 PM

45AQI

6 hours / Day

180 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 12 PM to 5 PM (Avg. 45).

Night time

Avg. Highest Time

1 AM - 4 AM

54AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

12 AM

50AQI

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. 54), while the lowest AQI was between 12 AM to 12 AM (Avg. 50).

2025 Days Vs Air Quality
City Station, Wenzhou, Zhejiang, China

2025

21%

63%

172

16%

Total number of days with different AQI categories in last 275 days in 2025 (90 days remaining)

Good

57 Days

Moderate

172 Days

Poor

44 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 21%

Health Risk Level:

Very high

In 2025, 21% of 275 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.

Annual Air Quality Insights
City Station, 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.

101AQI

98AQI

89AQI

87AQI

73AQI

60AQI

46AQI

53AQI

51AQI

No. of days

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

202573AQI

172

Highest AQI recorded in

January

101AQI

Lowest AQI recorded in

July

46AQI

202475AQI

208

Highest AQI recorded in

January

116AQI

Lowest AQI recorded in

July

52AQI

202380AQI

236

Highest AQI recorded in

March

101AQI

Lowest AQI recorded in

July

56AQI

202276AQI

216

Highest AQI recorded in

January

101AQI

Lowest AQI recorded in

October

59AQI

202174AQI

234

Highest AQI recorded in

December

109AQI

Lowest AQI recorded in

August

54AQI

202073AQI

185

Highest AQI recorded in

April

99AQI

Lowest AQI recorded in

August

54AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2023(Avg.)

80AQI

Least Polluted Year Recorded

2025(Avg.)

73AQI

City Station's annual 2025 AQI (73) shows an average percentage change of -3.4% (improved AQI) compared to previous years: 2020 (73), 2021 (74), 2022 (76), 2023 (80), 2024 (75).


5 AM	77
6 AM	78
7 AM	79
8 AM	81
9 AM	75
10 AM	67
11 AM	61
12 PM	54
1 PM	54
2 PM	43
3 PM	42
4 PM	40
5 PM	33
6 PM	32
7 PM	29
8 PM	30
9 PM	30
10 PM	32
11 PM	32
12 AM	32
1 AM	32
2 AM	30
3 AM	32
4 AM	30

City Station, Wenzhou, Zhejiang, China Historical Air Quality Analysis

October Air Quality AnalysisCity Station, Wenzhou, Zhejiang, China

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025City Station, Wenzhou, Zhejiang, China

Day & Night AQI Trend : Sep - Oct 2025City Station, Wenzhou, Zhejiang, China

2025 Days Vs Air Quality City Station, Wenzhou, Zhejiang, China

Annual Air Quality InsightsCity Station, Wenzhou, Zhejiang, China

AQI levels in 2025

No. of days

October Air Quality Analysis
City Station, Wenzhou, Zhejiang, China

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
City Station, Wenzhou, Zhejiang, China

Day & Night AQI Trend : Sep - Oct 2025
City Station, Wenzhou, Zhejiang, China

2025 Days Vs Air Quality
City Station, Wenzhou, Zhejiang, China

Annual Air Quality Insights
City Station, Wenzhou, Zhejiang, China