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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 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 |
Weather
What is the current weather in Saint Louis?
| Weather | Clear sky |
| Temperature | 50°F |
| Humidity | 61% |
| Wind | 0 mp/h |
| Pressure | 30.3 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Three Rivers, California | 90 |
| 2 | Springville, California | 88 |
| 3 | Lake Arrowhead, California | 71 |
| 4 | Chapel Hill, North Carolina | 65 |
| 5 | Greensboro, North Carolina | 65 |
| 6 | Raleigh, North Carolina | 64 |
| 7 | The Woodlands, Texas | 64 |
| 8 | Altadena, California | 62 |
| 9 | Cary, North Carolina | 62 |
| 10 | Monrovia, California | 62 |
(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 | BLAIR STREET | 32 |
| 2 | Branch Street | 24 |
| 3 | Windswept Drive | 21 |
| 4 | Buchanan Street | 18 |
| 5 | BROADWAY (South) | 17 |
| 6 | Forest Park | 15 |
| 7 | Muirfield Lane | 15 |
| 8 | Ladue | 9 |
(local time)
SEE WORLD AQI RANKING
US AQI
33
live AQI index
Good
Overview
What is the current air quality in Saint Louis?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 33 US AQI | O3 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.9µg/m³ | |
| PM10 | 16µg/m³ | |
| O3 | 80µg/m³ | |
| NO2 | 7.9µg/m³ | |
| SO2 | 1.3µg/m³ | |
| CO | 171.8µg/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 |
|---|---|---|---|---|
| Tuesday, Apr 16 | Good 30 AQI US |  | 78.8° 62.6° |  17.9 mp/h |
| Wednesday, Apr 17 | Good 40 AQI US |  | 80.6° 53.6° | 17.9 mp/h |
| Thursday, Apr 18 | Good 27 AQI US | | 59° 44.6° | 13.4 mp/h |
| Today | Good 33 AQI US |  | 57.2° 42.8° | 13.4 mp/h |
| Saturday, Apr 20 | Good 8 AQI US | | 59° 41° | 8.9 mp/h |
| Sunday, Apr 21 | Good 17 AQI US | | 66.2° 41° | 11.2 mp/h |
| Monday, Apr 22 | Good 16 AQI US | 100% | 60.8° 51.8° | 13.4 mp/h |
| Tuesday, Apr 23 | Good 10 AQI US | | 59° 44.6° | 11.2 mp/h |
| Wednesday, Apr 24 | Good 7 AQI US | 100% | 44.6° 39.2° | 11.2 mp/h |
| Thursday, Apr 25 | Good 16 AQI US | 100% | 62.6° 44.6° | 13.4 mp/h |
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News
The latest air quality news and resources.
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