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Air quality in Saint Louis
Air quality index (AQI) and PM2.5 air pollution in Saint Louis
13.9K people follow this city
Saint Louis Air Quality Map
Real-time Saint Louis air pollution map
AIR QUALITY DATA CONTRIBUTORS
4 Contributors
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Pollen
What is the pollen count in Saint Louis today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Saint Louis?
| Weather | Rain |
| Temperature | 62.6°F |
| Humidity | 96% |
| Wind | 6.9 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Omaha, Nebraska | 120 |
| 2 | Emmetsburg, Iowa | 116 |
| 3 | Carter Lake, Iowa | 99 |
| 4 | Decorah, Iowa | 90 |
| 5 | Edmond, Oklahoma | 89 |
| 6 | Rochester, Minnesota | 88 |
| 7 | Sparta, Wisconsin | 86 |
| 8 | Fort Thompson, South Dakota | 85 |
| 9 | Apple Valley, Minnesota | 84 |
| 10 | Oklahoma City, Oklahoma | 84 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Saint Louis aqi ranking
Real-time Saint Louis air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Branch Street | 33 |
| 2 | BROADWAY (South) | 31 |
| 3 | BLAIR STREET | 26 |
| 4 | Windswept Drive | 11 |
| 5 | Ladue | 8 |
| 6 | Forest Park | 4 |
| 7 | Muirfield Lane | 4 |
| 8 | Buchanan Street | 1 |
(local time)
SEE WORLD AQI RANKING
US AQI
25
live AQI index
Good
Overview
What is the current air quality in Saint Louis?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 25 US AQI | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 2µg/m³ | |
| PM10 | 11.5µg/m³ | |
| O3 | 62µg/m³ | |
| NO2 | 7.3µg/m³ | |
| SO2 | 1.1µg/m³ | |
| CO | 229µg/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 |
|---|---|---|---|---|
| Saturday, May 11 | Good 40 AQI US |  | 80.6° 55.4° |  11.2 mp/h |
| Sunday, May 12 | Good 38 AQI US |  | 69.8° 59° | 11.2 mp/h |
| Monday, May 13 | Good 29 AQI US | | 69.8° 60.8° | 8.9 mp/h |
| Today | Good 25 AQI US |  | 75.2° 55.4° | 8.9 mp/h |
| Wednesday, May 15 | Moderate 63 AQI US  | 100% | 71.6° 57.2° | 8.9 mp/h |
| Thursday, May 16 | Moderate 59 AQI US | 100% | 66.2° 62.6° | 13.4 mp/h |
| Friday, May 17 | Moderate 60 AQI US | 100% | 73.4° 60.8° | 11.2 mp/h |
| Saturday, May 18 | Moderate 71 AQI US | | 71.6° 60.8° | 11.2 mp/h |
| Sunday, May 19 | Good 18 AQI US | | 75.2° 57.2° | 11.2 mp/h |
| Monday, May 20 | Good 44 AQI US | 100% | 75.2° 62.6° | 17.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Saint Louis air quality data attribution
4Contributors
- Missouri Department of Natural Resources
1 station
Government Contributor
- 3 Anonymous contributors
3 stations
3 Anonymous Contributors
Data validated and calibrated by IQAirWhere is the cleanest air quality in Saint Louis?
AQI US, Metric