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Air quality in Saint Louis
Air quality index (AQI) and PM2.5 air pollution in Saint Louis
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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 | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Saint Louis?
| Weather | Mist |
| Temperature | 46.4°F |
| Humidity | 94% |
| Wind | 5.7 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Corpus Christi, Texas | 75 |
| 2 | San Antonio, Texas | 71 |
| 3 | New Braunfels, Texas | 70 |
| 4 | Buffalo, New York | 68 |
| 5 | Lancaster, Pennsylvania | 68 |
| 6 | Braddock, Pennsylvania | 66 |
| 7 | West Mifflin, Pennsylvania | 66 |
| 8 | Casa Grande, Arizona | 65 |
| 9 | Allentown, Pennsylvania | 63 |
| 10 | Camden, New Jersey | 63 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
41*
live AQI index
Good
Overview
What is the current air quality in Saint Louis?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 41* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 9.9*µg/m³ | |
!
PM2.5
x2
PM2.5 concentration in Saint Louis is currently 2 times the WHO annual air quality guideline value
Forecast
Saint Louis air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 41 AQI US |  100% | 68° 46.4° |  15.7 mp/h |
| Tuesday, Apr 30 | Good 20 AQI US |  | 62.6° 48.2° | 11.2 mp/h |
| Wednesday, May 1 | Good 27 AQI US | | 71.6° 46.4° | 15.7 mp/h |
| Thursday, May 2 | Good 47 AQI US | 60% | 69.8° 51.8° | 15.7 mp/h |
| Friday, May 3 | Moderate 71 AQI US  | 100% | 64.4° 50° | 17.9 mp/h |
| Saturday, May 4 | Moderate 61 AQI US |  | 64.4° 44.6° | 11.2 mp/h |
| Sunday, May 5 | Good 17 AQI US | 50% | 69.8° 53.6° | 11.2 mp/h |
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Where is the cleanest air quality in Saint Louis?
No locations are available.
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AQI US, Metric