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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 | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Saint Louis?
| Weather | Clear sky |
| Temperature | 73.4°F |
| Humidity | 47% |
| Wind | 2 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Pasadena, Texas | 93 |
| 2 | Coachella, California | 90 |
| 3 | San Bernardino, California | 87 |
| 4 | Indio, California | 86 |
| 5 | Mecca, California | 86 |
| 6 | Marana, Arizona | 81 |
| 7 | Claremont, California | 77 |
| 8 | Channelview, Texas | 75 |
| 9 | Philadelphia, Pennsylvania | 74 |
| 10 | Yucaipa, California | 74 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
68*
live AQI index
Moderate
Overview
What is the current air quality in Saint Louis?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 68* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 18.1*µg/m³ | |
!
PM2.5
x3.6
PM2.5 concentration in Saint Louis is currently 3.6 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Saint Louis?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Saint Louis air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 68 AQI US | | 78.8° 57.2° |  6.7 mp/h |
| Sunday, May 19 | Moderate 67 AQI US |  70% | 78.8° 59° | 6.7 mp/h |
| Monday, May 20 | Moderate 67 AQI US | 100% | 80.6° 55.4° | 13.4 mp/h |
| Tuesday, May 21 | Moderate 68 AQI US | 100% | 77° 62.6° | 17.9 mp/h |
| Wednesday, May 22 | Moderate 60 AQI US | 100% | 66.2° 51.8° | 20.1 mp/h |
| Thursday, May 23 | Good 27 AQI US  | | 68° 48.2° | 11.2 mp/h |
| Friday, May 24 | Good 8 AQI US | | 75.2° 50° | 13.4 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Saint Louis?
No locations are available.
AQI US, Metric