Seogwipo, Jeju, South Korea 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+

September Air Quality Analysis
Seogwipo, Jeju, South Korea

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Sep. 1	36	55	36		28
Sep. 2	41	57	26	37	34
Sep. 3	42	50	38	34	33
Sep. 4	42	42	49	35	34
Sep. 5	39	51	44	51	32
Sep. 6	35	59	50	48	35
Sep. 7	41	73	53	58	37
Sep. 8	35	59	46	71	34
Sep. 9	34	62	49		39
Sep. 10	40	44	48	51	34
Sep. 11	41	21	48	59	33
Sep. 12	40	23	66	55	38
Sep. 13	39	35	74	46	28
Sep. 14	33	38	46	56	21
Sep. 15	38	31	35	61	31
Sep. 16	34	25	29	46	32
Sep. 17		24	29	55	32
Sep. 18		33	34	50	36
Sep. 19		33	41	57	39
Sep. 20		31	45	56	39
Sep. 21		33	40	54	45
Sep. 22		25	37	48	75
Sep. 23		30	42	55	63
Sep. 24		33	43	49	44
Sep. 25		35	46	50	35
Sep. 26		41	47	56	38
Sep. 27		55	47	60	36
Sep. 28		44	64	48	43
Sep. 29		42	79	43	35
Sep. 30		42	54	51	32

AQI Trends: Highest and Lowest

Highest AQI recorded on

29th Sep 2023

79AQI

Lowest AQI recorded on

14th Sep 2021

21AQI

Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 34 of Good air quality, showing improvement over 2022 on the same day.

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Seogwipo, Jeju, South Korea

AQI

Day

Night

6 AM17th Sep 2025

6 PM

5 AM18th Sep 2025

Day time

Avg. Highest Time

12AMNaNth undefined

AQI

Avg. Lowest Time

12AMNaNth undefined

AQI

Night time

Avg. Highest Time

2AM18th Sep

39AQI

Avg. Lowest Time

12PM17th Sep

21AQI

In the last 24 hours,

Seogwipo's AQI reached its highest point of 39 at 2 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025
Seogwipo, Jeju, South Korea

AugSep

19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th

Day

Night

27°C25/29°C

27°C25/30°C

27°C24/30°C

27°C25/30°C

28°C26/30°C

28°C25/30°C

28°C26/30°C

28°C25/30°C

27°C25/29°C

28°C26/30°C

28°C25/30°C

27°C26/29°C

28°C26/30°C

28°C25/30°C

27°C24/29°C

27°C25/30°C

27°C25/29°C

28°C26/30°C

28°C27/31°C

28°C26/30°C

27°C26/29°C

26°C24/28°C

25°C24/27°C

27°C24/29°C

28°C26/29°C

27°C25/29°C

27°C26/29°C

28°C26/30°C

--°C/°C

6 AM

12 PM

6 PM

12 AM

5 AM

--°C/°C

Day time

Avg. Highest Time

6 AM - 8 AM

42AQI

3 hours / Day

90 hours / Month

Avg. Lowest Time

9 AM - 11 AM

34AQI

3 hours / Day

90 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 AM (Avg. 42), while the lowest AQI was between 9 AM to 11 AM (Avg. 34).

Night time

Avg. Highest Time

1 AM - 5 AM

43AQI

5 hours / Day

150 hours / Month

Avg. Lowest Time

7 PM - 11 PM

39AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 1 AM to 5 AM (Avg. 43), while the lowest AQI was between 7 PM to 11 PM (Avg. 39).

2025 Days Vs Air Quality
Seogwipo, Jeju, South Korea

2025

46%

118

54%

140

0.3%

Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)

Good

118 Days

Moderate

140 Days

Poor

1 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 46%

Health Risk Level:

Significant

In 2025, 46% of 260 days were within WHO’s safe air quality limits, and 54% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.

Annual Air Quality Insights
Seogwipo, Jeju, South Korea

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.

60AQI

55AQI

63AQI

58AQI

53AQI

51AQI

50AQI

45AQI

38AQI

No. of days

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

202553AQI

118

140

Highest AQI recorded in

March

63AQI

Lowest AQI recorded in

September

38AQI

202449AQI

213

147

Highest AQI recorded in

April

60AQI

Lowest AQI recorded in

July

30AQI

202352AQI

222

132

Highest AQI recorded in

March

65AQI

Lowest AQI recorded in

July

43AQI

202251AQI

174

142

Highest AQI recorded in

March

60AQI

Lowest AQI recorded in

August

39AQI

202151AQI

222

137

Highest AQI recorded in

March

84AQI

Lowest AQI recorded in

July

36AQI

202051AQI

152

112

Highest AQI recorded in

April

64AQI

Lowest AQI recorded in

July

41AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

53AQI

Least Polluted Year Recorded

2024(Avg.)

49AQI

Seogwipo's annual 2025 AQI (53) shows an average percentage change of 5.2% (worsened AQI) compared to previous years: 2020 (51), 2021 (51), 2022 (51), 2023 (52), 2024 (49).


6 AM	38
7 AM	37
8 AM	38
9 AM	26
10 AM	24
11 AM	25
12 PM	21
1 PM	28
2 PM	25
3 PM	33
4 PM	31
5 PM	29
6 PM	34
7 PM	32
8 PM	38
9 PM	36
10 PM	36
11 PM	37
12 AM	36
1 AM	38
2 AM	39
3 AM	39
4 AM	38
5 AM

Seogwipo, Jeju, South Korea Historical Air Quality Analysis

September Air Quality AnalysisSeogwipo, Jeju, South Korea

Day & Night AQI Trend: 17th Sep - 18th Sep 2025Seogwipo, Jeju, South Korea

Day & Night AQI Trend : Aug - Sep 2025Seogwipo, Jeju, South Korea

2025 Days Vs Air Quality Seogwipo, Jeju, South Korea

Annual Air Quality InsightsSeogwipo, Jeju, South Korea

AQI levels in 2025

No. of days

September Air Quality Analysis
Seogwipo, Jeju, South Korea

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Seogwipo, Jeju, South Korea

Day & Night AQI Trend : Aug - Sep 2025
Seogwipo, Jeju, South Korea

2025 Days Vs Air Quality
Seogwipo, Jeju, South Korea

Annual Air Quality Insights
Seogwipo, Jeju, South Korea