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Saint Louis Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-08-27 01:55:02 AM (Local Time)

Live AQI

31(AQI-US)

Air Quality is

Good

pm10 : 15 µg/m³

PM2.5 : 5 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

28 °C

Last Updated: 2025-08-27 01:55:02 AM (Local Time)

Map

Saint Louis

Major Air Pollutants
Saint Louis

Particulate Matter(PM2.5)

5µg/m³

Particulate Matter(PM10)

15µg/m³

Carbon Monoxide(CO)

92ppb

Sulfur Dioxide(SO2)

2ppb

Nitrogen Dioxide(NO2)

4ppb

Ozone(O3)

14ppb

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AQI Graph

Historical Air Quality Data
Saint Louis

24 Hours

AQI

Saint Louis

AQI

26-08-2025Time27-08-2025

Time	Saint Louis
04 AM	30
05 AM	35
06 AM	30
07 AM	30
08 AM	33
09 AM	30
10 AM	35
11 AM	32
12 PM	33
01 PM	32
02 PM	34
03 PM	32
04 PM	30
05 PM	35
06 PM	35
07 PM	36
08 PM	35
09 PM	35
10 PM	35
11 PM	34
12 AM	32
01 AM	30
02 AM	34
03 AM	35

Min.at 4:09 AM on 26th Aug

Max.at 7:10 PM on 26th Aug

Want air quality data?

AQI Trends - Annual Air Quality Changes
Saint Louis, Saint Louis, Senegal

AQI

Year

AQI

AQI	AQI
Oct 2022	37
Nov 2022	43
Dec 2022	24
Jan 2023	34
Feb 2023	47
Mar 2023	34
Apr 2023	38
May 2023	53
Jun 2023
Jul 2023
Aug 2023
Sep 2023
Oct 2023
Nov 2023	144
Dec 2023	124
Jan 2024	136
Feb 2024	125
Mar 2024	91
Apr 2024	75
May 2024	26
Jun 2024	45
Jul 2024	41
Aug 2024	40
Sep 2024	33
Oct 2024	20
Nov 2024	34
Dec 2024	76
Jan 2025	70
Feb 2025	61
Mar 2025	40
Apr 2025	36
May 2025	45
Jun 2025	49
Jul 2025	51
Aug 2025	53

Annual AQI Trends

2022

33AQI

2023

48AQI

45%

Rise

2024

65AQI

35%

Rise

2025

51AQI

-22%

Fall

Overall Annual Percentage (%) change of AQI in (2022 to 2025)

20%

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedNovember, 2023144AQI

Least PollutedOctober, 202420AQI

* This data analysis is from year 2022 - 2025

Saint Louis's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

UGB PSU

Good

Senegal's Metro Cities
Air Quality Index

Dakar

Kaolack

Saint Louis

Ziguinchor

Air Quality Calendar 2025
Saint Louis

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 54	2 Jan 63	3 Jan 68	4 Jan 62
5 Jan 115	6 Jan 111	7 Jan 86	8 Jan 75	9 Jan 62	10 Jan 76	11 Jan 82
12 Jan 86	13 Jan 85	14 Jan 63	15 Jan 50	16 Jan 91	17 Jan 55	18 Jan 68
19 Jan 60	20 Jan 65	21 Jan 66	22 Jan 49	23 Jan 64	24 Jan 58	25 Jan 71
26 Jan 79	27 Jan 56	28 Jan 62	29 Jan 66	30 Jan 56	31 Jan 61	1 Feb 52

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 79	27 Jan 56	28 Jan 62	29 Jan 66	30 Jan 56	31 Jan 61	1 Feb 52
2 Feb 49	3 Feb 61	4 Feb 67	5 Feb 52	6 Feb 55	7 Feb 68	8 Feb 68
9 Feb 78	10 Feb 80	11 Feb 62	12 Feb 65	13 Feb 65	14 Feb 72	15 Feb 66
16 Feb 47	17 Feb 39	18 Feb 45	19 Feb 35	20 Feb 50	21 Feb 57	22 Feb 56
23 Feb 57	24 Feb 60	25 Feb 76	26 Feb 72	27 Feb 74	28 Feb 82	1 Mar 83

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 57	24 Feb 60	25 Feb 76	26 Feb 72	27 Feb 74	28 Feb 82	1 Mar 83
2 Mar 69	3 Mar 58	4 Mar 52	5 Mar 35	6 Mar 34	7 Mar 32	8 Mar 30
9 Mar 33	10 Mar 28	11 Mar 39	12 Mar 33	13 Mar 28	14 Mar 38	15 Mar 29
16 Mar 28	17 Mar 32	18 Mar 30	19 Mar 33	20 Mar 33	21 Mar 26	22 Mar 26
23 Mar 26	24 Mar 28	25 Mar 39	26 Mar 57	27 Mar 55	28 Mar 55	29 Mar 54
30 Mar 41	31 Mar 46	1 Apr 44	2 Apr 50	3 Apr 37	4 Apr 42	5 Apr 43

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 41	31 Mar 46	1 Apr 44	2 Apr 50	3 Apr 37	4 Apr 42	5 Apr 43
6 Apr 49	7 Apr 55	8 Apr 52	9 Apr 36	10 Apr 43	11 Apr 28	12 Apr 36
13 Apr 47	14 Apr 48	15 Apr 38	16 Apr 30	17 Apr 30	18 Apr 33	19 Apr 30
20 Apr 29	21 Apr 36	22 Apr 26	23 Apr 26	24 Apr 31	25 Apr 29	26 Apr 28
27 Apr 27	28 Apr 30	29 Apr 28	30 Apr 28	1 May 36	2 May 43	3 May 49

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 27	28 Apr 30	29 Apr 28	30 Apr 28	1 May 36	2 May 43	3 May 49
4 May 53	5 May 56	6 May 54	7 May 44	8 May 50	9 May 45	10 May 40
11 May 43	12 May 46	13 May 39	14 May 37	15 May 40	16 May 43	17 May 40
18 May 34	19 May 37	20 May 38	21 May 45	22 May 49	23 May 43	24 May 42
25 May 48	26 May 50	27 May 50	28 May 46	29 May 49	30 May 48	31 May 52

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 53	2 Jun 56	3 Jun 54	4 Jun 49	5 Jun 44	6 Jun 41	7 Jun 43
8 Jun 43	9 Jun 45	10 Jun 44	11 Jun 47	12 Jun 52	13 Jun 49	14 Jun 34
15 Jun 38	16 Jun 47	17 Jun 47	18 Jun 49	19 Jun 50	20 Jun 50	21 Jun 57
22 Jun 66	23 Jun 53	24 Jun 53	25 Jun 51	26 Jun 50	27 Jun 52	28 Jun 50
29 Jun 52	30 Jun 49	1 Jul 51	2 Jul 48	3 Jul 51	4 Jul 53	5 Jul 54

July

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Jun 52	30 Jun 49	1 Jul 51	2 Jul 48	3 Jul 51	4 Jul 53	5 Jul 54
6 Jul 55	7 Jul 58	8 Jul 56	9 Jul 45	10 Jul 46	11 Jul 45	12 Jul 49
13 Jul 50	14 Jul 45	15 Jul 47	16 Jul 54	17 Jul 57	18 Jul 59	19 Jul 56
20 Jul 50	21 Jul 50	22 Jul 47	23 Jul 48	24 Jul 50	25 Jul 58	26 Jul 54
27 Jul 54	28 Jul 54	29 Jul 52	30 Jul 53	31 Jul 46	1 Aug 44	2 Aug 51

August

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Jul 54	28 Jul 54	29 Jul 52	30 Jul 53	31 Jul 46	1 Aug 44	2 Aug 51
3 Aug 47	4 Aug 43	5 Aug 46	6 Aug 51	7 Aug 55	8 Aug 58	9 Aug 59
10 Aug 60	11 Aug 57	12 Aug 57	13 Aug 59	14 Aug 56	15 Aug 51	16 Aug 54
17 Aug 61	18 Aug 59	19 Aug 56	20 Aug 53	21 Aug 53	22 Aug 53	23 Aug 52
24 Aug 47	25 Aug 45	26 Aug -	27 Aug -	28 Aug -	29 Aug -	30 Aug -
31 Aug -	1 Sep -	2 Sep -	3 Sep -	4 Sep -	5 Sep -	6 Sep -

Health Advice For People Living In
Saint Louis

0Cigarettes per day

Weekly 0 Cigarettes

Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

Air PurifierTurn Off
Car FilterAdvisable
N95 MaskAdvisable
Stay IndoorAdvisable

As per the current AQI, turn off the air purifier.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Saint Louis

Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)

Low Chances of Asthma

Asthma

Risk of Asthma symptoms is Low when AQI is Good (0-50)

Mild symptoms such as slight wheezing, occasional cough, and minor shortness of breath

Do's :

Keep track of air quality to plan outdoor activities safely.
Drink water to keep airways moist and reduce irritation.
Include non-allergenic fruits and vegetables that support overall lung health, like apples, pears, and spinach.

Don'ts :

Skip medications that is prescribed by your doctor.
Engage in outdoor activities in early morning during high pollen hours.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025
Senegal

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2025

World's Most PollutedCity Rankings (2024)

World's Most PollutedCountry Rankings(2024)

RankCityAQIAQI Status

Standard Value

Kaolack, Senegal

Dakar, Senegal

Matam, Senegal

Saint Louis, Senegal

Ziguinchor, Senegal

Last Updated: 27 Aug 2025, 02:08 AM

AQI City Rankings

Air Quality Solutions For Saint Louis
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 Saint Louis

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 Saint Louis

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 Saint Louis

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 Saint Louis

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.

Saint Louis'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 Saint Louis

Frequently Asked Questions About Air Quality

What is the current AQI level in Saint Louis?

The current real-time AQI level in Saint Louis is 31 (Good). This was last updated 2025-08-27 01:55:02 AM (Local Time).

When was the best AQI level in Saint Louis in the last 24 hours?

The best AQI level was 30 (Good) at 4:09 AM, Aug 26, 2025 (Local Time) during the last 24 hours.

When was the worst AQI level in Saint Louis in the last 24 hours?

The worst AQI level was 36 (Good) at 7:10 PM, Aug 26, 2025 (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Saint Louis during last 24 hours?

The AQI levels in Saint Louis have been fluctuating throughout the last 24 hours. The levels have increased by highest 36 at 7:10 PM, Aug 26, 2025 (Local Time), lowest 30 at 4:09 AM, Aug 26, 2025 (Local Time).

What actions are recommended as per the current AQI level in Saint Louis?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.