Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Saint-Louis
Air quality index (AQI) and PM2.5 air pollution in Saint-Louis
13 people follow this city
Saint-Louis Air Quality Map
Real-time Saint-Louis air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Saint-Louis today?
 | Index | Low | |
 | Tree pollen | None | |
 | Grass pollen | None | |
 | Weed pollen | Low |
Source: tomorrow.io
Weather
What is the current weather in Saint-Louis?
| Weather | Broken clouds |
| Temperature | 80.6°F |
| Humidity | 69% |
| Wind | 19.6 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time France city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Bastia, Corsica | 53 |
| 2 | Lyon, Auvergne-Rhone-Alpes | 50 |
| 3 | Nice, Provence-Alpes-Cote d'Azur | 50 |
| 4 | Saint-Nazaire, Pays de la Loire | 40 |
| 5 | Niort, Nouvelle-Aquitaine | 37 |
| 6 | Marseille, Provence-Alpes-Cote d'Azur | 35 |
| 7 | Calais, Hauts-de-France | 34 |
| 8 | Rouen, Normandy | 31 |
| 9 | Angers, Pays de la Loire | 30 |
| 10 | Paris, Ile-de-France | 30 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
5*
live AQI index
Good
Overview
What is the current air quality in Saint-Louis?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 5* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 1.2*µg/m³ | |
| NO2 | 4.1*µg/m³ | |
✓
PM2.5 concentration in Saint-Louis air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Saint-Louis?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Saint-Louis air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 5 AQI US |  40% | 80.6° 75.2° |  15.7 mp/h |
| Tuesday, Apr 30 | Good 6 AQI US | 30% | 78.8° 75.2° | 13.4 mp/h |
| Wednesday, May 1 | Good 6 AQI US | | 78.8° 75.2° | 6.7 mp/h |
| Thursday, May 2 | Good 7 AQI US | 30% | 78.8° 75.2° | 4.5 mp/h |
| Friday, May 3 | Good 7 AQI US | 40% | 78.8° 75.2° | 8.9 mp/h |
| Saturday, May 4 | Good 6 AQI US | 40% | 77° 73.4° | 17.9 mp/h |
| Sunday, May 5 | Good 4 AQI US | 40% | 77° 71.6° | 15.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Saint-Louis?
No locations are available.
AQI US, Metric