Basuo, Hainan, 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
Basuo, Hainan, China

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	32	32		30	39
Jul. 2	28	31		32	37
Jul. 3		33		22	39
Jul. 4		30			47
Jul. 5		32			55
Jul. 6		32	27	26	39
Jul. 7		33	21	22	26
Jul. 8		33	22	23	26
Jul. 9		33	26	22	23
Jul. 10		31			25
Jul. 11		33			30
Jul. 12		28		14	30
Jul. 13		32		15	31
Jul. 14		29		15	35
Jul. 15		40		16	24
Jul. 16		32	29	23	24
Jul. 17		35		26	24
Jul. 18		30		27	31
Jul. 19		30		25	43
Jul. 20		29		19	34
Jul. 21		31		16	38
Jul. 22		28		14	28
Jul. 23		30		20	21
Jul. 24		29		22	15
Jul. 25		29			20
Jul. 26		28			23
Jul. 27		29			27
Jul. 28		29			28
Jul. 29		29			30
Jul. 30		27			30
Jul. 31		27			32

AQI Trends: Highest and Lowest

Highest AQI recorded on

5th Jul 2021

55AQI

Lowest AQI recorded on

12th Jul 2022

14AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 28 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Basuo, Hainan, China

AQI

Day

Night

6 AM3rd Jul 2025

7 PM

5 AM4th Jul 2025

Day time

Avg. Highest Time

6AM3rd Jul

33AQI

Avg. Lowest Time

9AM3rd Jul

19AQI

Night time

Avg. Highest Time

2AM4th Jul

29AQI

Avg. Lowest Time

9PM3rd Jul

24AQI

In the last 24 hours,

Basuo's AQI reached its highest point of 33 at 6 AM during the Day, while the lowest point, 19, was recorded at 9 AM during the Day between 3rd Jul and 4th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Basuo, Hainan, 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

29°C27/31°C

29°C27/32°C

30°C27/33°C

30°C28/32°C

29°C27/32°C

29°C27/31°C

28°C27/31°C

27°C26/29°C

27°C26/28°C

29°C27/31°C

29°C27/32°C

29°C27/31°C

29°C26/32°C

28°C26/31°C

28°C26/30°C

28°C26/31°C

28°C26/30°C

29°C27/31°C

29°C27/30°C

28°C27/31°C

28°C26/30°C

6 AM

12 PM

7 PM

12 AM

5 AM

0°C0/0°C

Day time

Avg. Highest Time

6 AM - 7 AM

43AQI

2 hours / Day

60 hours / Month

Avg. Lowest Time

9 AM - 11 AM

32AQI

3 hours / Day

90 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 6 AM to 7 AM (Avg. 43), while the lowest AQI was between 9 AM to 11 AM (Avg. 32).

Night time

Avg. Highest Time

2 AM - 5 AM

44AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

12 AM

39AQI

1 hours / Day

30 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 2 AM to 5 AM (Avg. 44), while the lowest AQI was between 12 AM to 12 AM (Avg. 39).

2025 Days Vs Air Quality
Basuo, Hainan, China

2025

34%

61%

111

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

Good

63 Days

Moderate

111 Days

Poor

9 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 34%

Health Risk Level:

High

In 2025, 34% of 185 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
Basuo, Hainan, 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.

88AQI

59AQI

60AQI

64AQI

48AQI

39AQI

30AQI

No. of days

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

202559AQI

111

Highest AQI recorded in

January

88AQI

Lowest AQI recorded in

July

30AQI

202449AQI

191

114

Highest AQI recorded in

December

82AQI

Lowest AQI recorded in

July

31AQI

202353AQI

Highest AQI recorded in

March

81AQI

Lowest AQI recorded in

September

22AQI

202247AQI

153

107

Highest AQI recorded in

January

64AQI

Lowest AQI recorded in

August

16AQI

202152AQI

205

145

Highest AQI recorded in

January

91AQI

Lowest AQI recorded in

September

26AQI

202046AQI

163

Highest AQI recorded in

December

82AQI

Lowest AQI recorded in

August

26AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

59AQI

Least Polluted Year Recorded

2020(Avg.)

46AQI

Basuo's annual 2025 AQI (59) shows an average percentage change of 20.2% (worsened AQI) compared to previous years: 2020 (46), 2021 (52), 2022 (47), 2023 (53), 2024 (49).


6 AM	33
7 AM	33
8 AM	25
9 AM	19
10 AM	23
11 AM	23
12 PM	23
1 PM	23
2 PM	23
3 PM	23
4 PM	23
5 PM	21
6 PM	21
7 PM	22
8 PM	24
9 PM	24
10 PM	26
11 PM	25
12 AM	26
1 AM	28
2 AM	29
3 AM	28
4 AM	27
5 AM	27

Basuo, Hainan, China Historical Air Quality Analysis

July Air Quality AnalysisBasuo, Hainan, China

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025Basuo, Hainan, China

Day & Night AQI Trend : Jun - Jul 2025Basuo, Hainan, China

2025 Days Vs Air Quality Basuo, Hainan, China

Annual Air Quality InsightsBasuo, Hainan, China

AQI levels in 2025

No. of days

July Air Quality Analysis
Basuo, Hainan, China

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Basuo, Hainan, China

Day & Night AQI Trend : Jun - Jul 2025
Basuo, Hainan, China

2025 Days Vs Air Quality
Basuo, Hainan, China

Annual Air Quality Insights
Basuo, Hainan, China