Linhai, 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
Linhai, Zhejiang, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	46	51	53	25	43
Jul. 2	50	49	55	29	69
Jul. 3		49	49	34	67
Jul. 4		52	54	52	56
Jul. 5		54	83	55	37
Jul. 6		54	57	40	30
Jul. 7		55	64	50	56
Jul. 8		54	71	54	60
Jul. 9		55	74	56	47
Jul. 10		56	59	71	55
Jul. 11		57	56	88	66
Jul. 12		58	57	77	66
Jul. 13		59	48	61	54
Jul. 14		58	41	65	36
Jul. 15		58	32	77	30
Jul. 16		50	26	84	28
Jul. 17		54	21	87	31
Jul. 18		51	33	65	51
Jul. 19		54	38	71	45
Jul. 20		49	44	66	27
Jul. 21		52	40	51	32
Jul. 22		45	46	57	34
Jul. 23		47	46	80	18
Jul. 24		41	53	60	27
Jul. 25		39	34		28
Jul. 26		35	21	72	40
Jul. 27		36	13		56
Jul. 28		35	26		62
Jul. 29		32	27		56
Jul. 30		33	40		58
Jul. 31		35			57

AQI Trends: Highest and Lowest

Highest AQI recorded on

11th Jul 2022

88AQI

Lowest AQI recorded on

27th Jul 2023

13AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 50 of Good air quality, showing improvement over 2023 and 2021 on the same day.

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

AQI

Day

Night

4 AM3rd Jul 2025

6 PM

3 AM4th Jul 2025

Day time

Avg. Highest Time

6PM3rd Jul

57AQI

Avg. Lowest Time

9AM3rd Jul

46AQI

Night time

Avg. Highest Time

7PM3rd Jul

55AQI

Avg. Lowest Time

1AM4th Jul

51AQI

In the last 24 hours,

Linhai's AQI reached its highest point of 57 at 6 PM during the Day, while the lowest point, 46, was recorded at 9 AM during the Day between 3rd Jul and 4th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Linhai, 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

21°C13/30°C

21°C15/29°C

23°C14/32°C

26°C18/35°C

25°C21/31°C

25°C20/29°C

23°C20/26°C

21°C20/21°C

22°C20/25°C

23°C22/25°C

26°C22/33°C

24°C22/29°C

24°C18/30°C

26°C20/34°C

26°C20/33°C

25°C21/32°C

26°C22/34°C

27°C22/34°C

24°C23/25°C

25°C23/29°C

24°C21/27°C

24°C21/28°C

27°C22/34°C

28°C22/35°C

27°C22/34°C

26°C21/34°C

27°C23/34°C

28°C23/34°C

28°C22/34°C

27°C22/33°C

4 AM

11 AM

6 PM

11 PM

3 AM

0°C0/0°C

Day time

Avg. Highest Time

4 AM - 7 AM

56AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

8 AM - 6 PM

52AQI

11 hours / Day

330 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 4 AM to 7 AM (Avg. 56), while the lowest AQI was between 8 AM to 6 PM (Avg. 52).

Night time

Avg. Highest Time

12 AM - 3 AM

56AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

7 PM - 11 PM

54AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 12 AM to 3 AM (Avg. 56), while the lowest AQI was between 7 PM to 11 PM (Avg. 54).

2025 Days Vs Air Quality
Linhai, Zhejiang, China

2025

72%

131

22%

Total number of days with different AQI categories in last 185 days in 2025 (180 days remaining)

Good

12 Days

Moderate

131 Days

Poor

40 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 7%

Health Risk Level:

Extreme

In 2025, 7% of 185 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
Linhai, 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.

107AQI

96AQI

82AQI

81AQI

69AQI

55AQI

48AQI

No. of days

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

202581AQI

131

Highest AQI recorded in

January

107AQI

Lowest AQI recorded in

July

48AQI

202468AQI

232

Highest AQI recorded in

January

116AQI

Lowest AQI recorded in

July

49AQI

202368AQI

177

Highest AQI recorded in

January

94AQI

Lowest AQI recorded in

August

45AQI

202272AQI

214

Highest AQI recorded in

January

104AQI

Lowest AQI recorded in

June

55AQI

202170AQI

202

Highest AQI recorded in

January

106AQI

Lowest AQI recorded in

July

46AQI

202069AQI

203

Highest AQI recorded in

December

93AQI

Lowest AQI recorded in

August

55AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

81AQI

Least Polluted Year Recorded

2023(Avg.)

68AQI

Linhai's annual 2025 AQI (81) shows an average percentage change of 17.1% (worsened AQI) compared to previous years: 2020 (69), 2021 (70), 2022 (72), 2023 (68), 2024 (68).


4 AM	52
5 AM	52
6 AM	52
7 AM	52
8 AM	49
9 AM	46
10 AM	49
11 AM	49
12 PM	49
1 PM	49
2 PM	49
3 PM	49
4 PM	49
5 PM	56
6 PM	57
7 PM	55
8 PM	53
9 PM	54
10 PM	54
11 PM	53
12 AM	51
1 AM	51
2 AM	52
3 AM	52

Linhai, Zhejiang, China Historical Air Quality Analysis

July Air Quality AnalysisLinhai, Zhejiang, China

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

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

2025 Days Vs Air Quality Linhai, Zhejiang, China

Annual Air Quality InsightsLinhai, Zhejiang, China

AQI levels in 2025

No. of days

July Air Quality Analysis
Linhai, Zhejiang, China

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

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

2025 Days Vs Air Quality
Linhai, Zhejiang, China

Annual Air Quality Insights
Linhai, Zhejiang, China