Guangsha College, Dongyang, 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
Guangsha College, Dongyang, Zhejiang, China

2021

2022

2024

2025

AQI

Days

Days	2025	2024	2022	2021
Jul. 1	43	52	27	40
Jul. 2	47	51	28	48
Jul. 3	52	52	43	58
Jul. 4		51	57	68
Jul. 5		53	56	57
Jul. 6		51	36	31
Jul. 7		53	43	48
Jul. 8		53	58	48
Jul. 9		53	54	43
Jul. 10		56	65	53
Jul. 11		56	71	76
Jul. 12		58	70	74
Jul. 13		58	74	62
Jul. 14		56	94	54
Jul. 15		57	88	42
Jul. 16		56	99	36
Jul. 17		53	82	39
Jul. 18		55	46	46
Jul. 19		54	56	61
Jul. 20		54	59	33
Jul. 21		54	45	40
Jul. 22		54	72	40
Jul. 23		49	77	22
Jul. 24		45	75	21
Jul. 25		42		17
Jul. 26		40	68	24
Jul. 27		38		42
Jul. 28		37		50
Jul. 29		36		63
Jul. 30		35		46
Jul. 31		34		54

AQI Trends: Highest and Lowest

Highest AQI recorded on

16th Jul 2022

99AQI

Lowest AQI recorded on

25th Jul 2021

17AQI

Same Day Analysis (3rd July ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 52 of Moderate air quality, showing improvement over 2024 and 2021 on the same day.

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

AQI

Day

Night

5 AM3rd Jul 2025

7 PM

4 AM4th Jul 2025

Day time

Avg. Highest Time

12AMNaNth undefined

AQI

Avg. Lowest Time

12AMNaNth undefined

AQI

Night time

Avg. Highest Time

6PM3rd Jul

61AQI

Avg. Lowest Time

1AM4th Jul

50AQI

In the last 24 hours,

Guangsha College's AQI reached its highest point of 61 at 6 PM during the Night, while the lowest point, 50, was recorded at 1 AM during the Night between 3rd Jul and 4th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Guangsha College, Dongyang, 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°C17/31°C

24°C18/31°C

25°C17/32°C

27°C22/34°C

25°C23/31°C

25°C22/29°C

23°C19/27°C

21°C20/22°C

24°C20/30°C

24°C22/27°C

26°C23/32°C

24°C22/29°C

23°C18/30°C

27°C21/34°C

27°C22/33°C

27°C23/34°C

28°C24/35°C

28°C23/34°C

24°C22/27°C

25°C22/30°C

25°C21/29°C

26°C21/32°C

28°C23/35°C

28°C22/36°C

26°C21/35°C

27°C20/34°C

28°C23/35°C

29°C23/36°C

0°C0/0°C

5 AM

12 PM

7 PM

12 AM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

5 AM - 7 PM

53AQI

15 hours / Day

450 hours / Month

Avg. Lowest Time

5 AM - 7 PM

53AQI

15 hours / Day

450 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 53), while the lowest AQI was between 5 AM to 7 PM (Avg. 53).

Night time

Avg. Highest Time

12 AM - 4 AM

57AQI

5 hours / Day

150 hours / Month

Avg. Lowest Time

8 PM - 11 PM

54AQI

4 hours / Day

120 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 12 AM to 4 AM (Avg. 57), while the lowest AQI was between 8 PM to 11 PM (Avg. 54).

2025 Days Vs Air Quality
Guangsha College, Dongyang, Zhejiang, China

2025

71%

131

24%

0.5%

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

Good

8 Days

Moderate

131 Days

Poor

44 Days

Unhealthy

1 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 4%

Health Risk Level:

Extreme

In 2025, 4% 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
Guangsha College, Dongyang, 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.

117AQI

101AQI

87AQI

85AQI

73AQI

56AQI

47AQI

No. of days

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

202586AQI

131

Highest AQI recorded in

January

117AQI

Lowest AQI recorded in

July

47AQI

202472AQI

173

Highest AQI recorded in

December

115AQI

Lowest AQI recorded in

July

50AQI

202390AQI

Highest AQI recorded in

December

91AQI

Lowest AQI recorded in

November

89AQI

202266AQI

141

Highest AQI recorded in

April

72AQI

Lowest AQI recorded in

January

54AQI

202169AQI

124

Highest AQI recorded in

January

104AQI

Lowest AQI recorded in

July

46AQI

202070AQI

180

Highest AQI recorded in

December

92AQI

Lowest AQI recorded in

June

51AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2023(Avg.)

90AQI

Least Polluted Year Recorded

2022(Avg.)

66AQI

Guangsha College's annual 2025 AQI (86) shows an average percentage change of 18.3% (worsened AQI) compared to previous years: 2020 (70), 2021 (69), 2022 (66), 2023 (90), 2024 (72).


5 AM	53
6 AM	53
7 AM	53
8 AM	54
9 AM	55
10 AM	55
11 AM	55
12 PM	55
1 PM	55
2 PM	55
3 PM	55
4 PM	55
5 PM	58
6 PM	61
7 PM	56
8 PM	54
9 PM	56
10 PM	56
11 PM	54
12 AM	54
1 AM	50
2 AM	51
3 AM	51
4 AM	53

Guangsha College, Dongyang, Zhejiang, China Historical Air Quality Analysis

July Air Quality AnalysisGuangsha College, Dongyang, Zhejiang, China

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

Day & Night AQI Trend : Jun - Jul 2025Guangsha College, Dongyang, Zhejiang, China

2025 Days Vs Air Quality Guangsha College, Dongyang, Zhejiang, China

Annual Air Quality InsightsGuangsha College, Dongyang, Zhejiang, China

AQI levels in 2025

No. of days

July Air Quality Analysis
Guangsha College, Dongyang, Zhejiang, China

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

Day & Night AQI Trend : Jun - Jul 2025
Guangsha College, Dongyang, Zhejiang, China

2025 Days Vs Air Quality
Guangsha College, Dongyang, Zhejiang, China

Annual Air Quality Insights
Guangsha College, Dongyang, Zhejiang, China