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Annan District Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Tainan

Last Updated: 2025-09-17 09:09:36 AM (Local Time)

Live AQI

61(AQI-US)

Air Quality is

Moderate

pm10 : 33 µg/m³

PM2.5 : 15 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

30 °C

Last Updated: 2025-09-17 09:09:36 AM (Local Time)

Map

Annan District

Major Air Pollutants
Annan District

Particulate Matter(PM2.5)

15µg/m³

Particulate Matter(PM10)

33µg/m³

Carbon Monoxide(CO)

364ppb

Sulfur Dioxide(SO2)

1ppb

Nitrogen Dioxide(NO2)

16ppb

Ozone(O3)

14ppb

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AQI Graph

Historical Air Quality Data
Annan District

24 Hours

AQI

Annan District

AQI

16-09-2025Time17-09-2025

Time	Annan District
09 AM	63
10 AM	64
11 AM	72
12 PM	76
01 PM	70
02 PM	58
03 PM	60
04 PM	54
05 PM	46
06 PM	39
07 PM	40
08 PM	45
09 PM	46
10 PM	50
11 PM	47
12 AM	47
01 AM	46
02 AM	46
03 AM	48
04 AM	52
05 AM	52
06 AM	52
07 AM	52
08 AM	58
09 AM	61

Min.at 6:09 PM on 16th Sep

Max.at 12:09 PM on 16th Sep

Want air quality data?

AQI Trends - Annual Air Quality Changes
Annan District, Tainan, Taiwan

AQI

Year

AQI

AQI	AQI
Mar 2020	80
Apr 2020	76
May 2020	44
Jun 2020	30
Jul 2020	34
Aug 2020	39
Sep 2020	64
Oct 2020	74
Nov 2020	75
Dec 2020	73
Jan 2021	98
Feb 2021	106
Mar 2021	98
Apr 2021	79
May 2021	47
Jun 2021	35
Jul 2021	36
Aug 2021	38
Sep 2021	51
Oct 2021	58
Nov 2021	67
Dec 2021	75
Jan 2022	73
Feb 2022	75
Mar 2022	85
Apr 2022	63
May 2022	50
Jun 2022	29
Jul 2022	29
Aug 2022	54
Sep 2022	63
Oct 2022	60
Nov 2022	76
Dec 2022	60
Jan 2023	83
Feb 2023	88
Mar 2023	80
Apr 2023	78
May 2023	65
Jun 2023	37
Jul 2023	30
Aug 2023	36
Sep 2023	46
Oct 2023	69
Nov 2023	78
Dec 2023	77
Jan 2024	92
Feb 2024	73
Mar 2024	78
Apr 2024	68
May 2024	65
Jun 2024	40
Jul 2024	31
Aug 2024	40
Sep 2024	48
Oct 2024	61
Nov 2024	67
Dec 2024	71
Jan 2025	76
Feb 2025	73
Mar 2025	68
Apr 2025	64
May 2025	49
Jun 2025	32
Jul 2025	40
Aug 2025	44
Sep 2025	44

Annual AQI Trends

2020

58AQI

2021

65AQI

12%

Rise

2022

59AQI

-9%

Fall

2023

64AQI

Rise

2024

61AQI

-5%

Fall

2025

55AQI

-10%

Fall

Overall Annual Percentage (%) change of AQI in (2020 to 2025)

-1%

Fall (Improved AQI)

Most & Least Polluted Months

Most PollutedFebruary, 2021106AQI

Least PollutedJuly, 202229AQI

* This data analysis is from year 2020 - 2025

Annan District's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Section 3

Moderate

Taiwan's Metro Cities
Air Quality Index

Hsinchu

Kaohsiung

Keelung

Tainan

Taipei

Air Quality Calendar 2025
Annan District

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 105	2 Jan 66	3 Jan 69	4 Jan 66
5 Jan 66	6 Jan 83	7 Jan 81	8 Jan 72	9 Jan 77	10 Jan 65	11 Jan 58
12 Jan 60	13 Jan 68	14 Jan 84	15 Jan 85	16 Jan 69	17 Jan 70	18 Jan 76
19 Jan 67	20 Jan 83	21 Jan 92	22 Jan 95	23 Jan 101	24 Jan 81	25 Jan 97
26 Jan 74	27 Jan 65	28 Jan 65	29 Jan 65	30 Jan 69	31 Jan 80	1 Feb 63

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 74	27 Jan 65	28 Jan 65	29 Jan 65	30 Jan 69	31 Jan 80	1 Feb 63
2 Feb 63	3 Feb 62	4 Feb 72	5 Feb 79	6 Feb 84	7 Feb 69	8 Feb 67
9 Feb 57	10 Feb 62	11 Feb 73	12 Feb 73	13 Feb 59	14 Feb 70	15 Feb 62
16 Feb 85	17 Feb 98	18 Feb 89	19 Feb 73	20 Feb 91	21 Feb 62	22 Feb 69
23 Feb 55	24 Feb 66	25 Feb 76	26 Feb 96	27 Feb 103	28 Feb 79	1 Mar 77

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 55	24 Feb 66	25 Feb 76	26 Feb 96	27 Feb 103	28 Feb 79	1 Mar 77
2 Mar 63	3 Mar 58	4 Mar 59	5 Mar 55	6 Mar 48	7 Mar 61	8 Mar 65
9 Mar 66	10 Mar 81	11 Mar 93	12 Mar 82	13 Mar 80	14 Mar 83	15 Mar 74
16 Mar 56	17 Mar 85	18 Mar 65	19 Mar 74	20 Mar 75	21 Mar 86	22 Mar 74
23 Mar 71	24 Mar 65	25 Mar 64	26 Mar 63	27 Mar 56	28 Mar 64	29 Mar 59
30 Mar 47	31 Mar 53	1 Apr 40	2 Apr 63	3 Apr 62	4 Apr 71	5 Apr 75

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 47	31 Mar 53	1 Apr 40	2 Apr 63	3 Apr 62	4 Apr 71	5 Apr 75
6 Apr 65	7 Apr 72	8 Apr 73	9 Apr 67	10 Apr 65	11 Apr 63	12 Apr 55
13 Apr 86	14 Apr 74	15 Apr 87	16 Apr 78	17 Apr 71	18 Apr 60	19 Apr 56
20 Apr 56	21 Apr 56	22 Apr 54	23 Apr 54	24 Apr 51	25 Apr 50	26 Apr 64
27 Apr 62	28 Apr 57	29 Apr 68	30 Apr 59	1 May 60	2 May 68	3 May 67

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 62	28 Apr 57	29 Apr 68	30 Apr 59	1 May 60	2 May 68	3 May 67
4 May 71	5 May 57	6 May 62	7 May 56	8 May 58	9 May 44	10 May 37
11 May 42	12 May 54	13 May 52	14 May 53	15 May 47	16 May 42	17 May 40
18 May 33	19 May 32	20 May 34	21 May 30	22 May 38	23 May 36	24 May 40
25 May 52	26 May 55	27 May 54	28 May 55	29 May 44	30 May 52	31 May 56

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 46	2 Jun 40	3 Jun 37	4 Jun 36	5 Jun 34	6 Jun 36	7 Jun 30
8 Jun 26	9 Jun 29	10 Jun 29	11 Jun 38	12 Jun 43	13 Jun 31	14 Jun 33
15 Jun 39	16 Jun 33	17 Jun 31	18 Jun 34	19 Jun 33	20 Jun 34	21 Jun 28
22 Jun 24	23 Jun 24	24 Jun 25	25 Jun 24	26 Jun 26	27 Jun 26	28 Jun 28
29 Jun 29	30 Jun 33	1 Jul 31	2 Jul 35	3 Jul 36	4 Jul 38	5 Jul 36

July

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Jun 29	30 Jun 33	1 Jul 31	2 Jul 35	3 Jul 36	4 Jul 38	5 Jul 36
6 Jul 33	7 Jul 32	8 Jul 37	9 Jul 39	10 Jul 34	11 Jul 37	12 Jul 41
13 Jul 43	14 Jul 45	15 Jul 45	16 Jul 45	17 Jul 45	18 Jul 45	19 Jul 45
20 Jul 37	21 Jul 39	22 Jul 39	23 Jul 47	24 Jul 48	25 Jul 48	26 Jul 44
27 Jul 45	28 Jul 40	29 Jul 39	30 Jul 42	31 Jul 44	1 Aug 48	2 Aug 45

August

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Jul 45	28 Jul 40	29 Jul 39	30 Jul 42	31 Jul 44	1 Aug 48	2 Aug 45
3 Aug 51	4 Aug 43	5 Aug 46	6 Aug 50	7 Aug 50	8 Aug 51	9 Aug 45
10 Aug 40	11 Aug 39	12 Aug 42	13 Aug 43	14 Aug 39	15 Aug 42	16 Aug 42
17 Aug 37	18 Aug 35	19 Aug 41	20 Aug 42	21 Aug 36	22 Aug 45	23 Aug 50
24 Aug 49	25 Aug 47	26 Aug 44	27 Aug 43	28 Aug 47	29 Aug 43	30 Aug 44
31 Aug 43	1 Sep 45	2 Sep 45	3 Sep 46	4 Sep 51	5 Sep 52	6 Sep 48

September

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
31 Aug 43	1 Sep 45	2 Sep 45	3 Sep 46	4 Sep 51	5 Sep 52	6 Sep 48
7 Sep 38	8 Sep 40	9 Sep 39	10 Sep 40	11 Sep 43	12 Sep 45	13 Sep 43
14 Sep 44	15 Sep 46	16 Sep -	17 Sep -	18 Sep -	19 Sep -	20 Sep -
21 Sep -	22 Sep -	23 Sep -	24 Sep -	25 Sep -	26 Sep -	27 Sep -
28 Sep -	29 Sep -	30 Sep -	1 Oct -	2 Oct -	3 Oct -	4 Oct -

Air Quality Solutions For Annan District
Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

air quality solutions for offices for Annan District

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Annan District

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Annan District

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Annan District

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Annan District's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store

Get it onGoogle Play

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at Annan District

Frequently Asked Questions About Air Quality

What is the current AQI level in Annan District?

The current real-time AQI level in Annan District is 61 (Moderate). This was last updated 2025-09-17 09:09:36 AM (Local Time).

When was the best AQI level in Annan District in the last 24 hours?

The best AQI level was 39 (Good) at 6:09 PM, Sep 16, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Annan District in the last 24 hours?

The worst AQI level was 76 (Moderate) at 12:09 PM, Sep 16, 2025 (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Annan District during last 24 hours?

The AQI levels in Annan District have been fluctuating throughout the last 24 hours. The levels have increased by highest 76 at 12:09 PM, Sep 16, 2025 (Local Time), lowest 39 at 6:09 PM, Sep 16, 2025 (Local Time).

What actions are recommended as per the current AQI level in Annan District?

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.