Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Saint Charles
Air quality index (AQI) and PM2.5 air pollution in Saint Charles
138 people follow this city
Saint Charles Air Quality Map
Real-time Saint Charles air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
See all
Pollen
What is the pollen count in Saint Charles 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 Charles?
| Weather | Few clouds |
| Temperature | 64.4°F |
| Humidity | 91% |
| Wind | 0 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Corpus Christi, Texas | 89 |
| 2 | Mecca, California | 88 |
| 3 | San Antonio, Texas | 86 |
| 4 | The Woodlands, Texas | 86 |
| 5 | Georgetown, Texas | 82 |
| 6 | Cedar Park, Texas | 80 |
| 7 | Austin, Texas | 79 |
| 8 | Maricopa, Arizona | 79 |
| 9 | New Braunfels, Texas | 78 |
| 10 | Boerne, Texas | 76 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Saint Charles aqi ranking
Real-time Saint Charles air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Cottleville Weldon Spring | 39 |
| 2 | Orchard Farm | 22 |
(local time)
SEE WORLD AQI RANKING
US AQI
39
live AQI index
Good
Overview
What is the current air quality in Saint Charles?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 39 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 7.1µg/m³ | |
!
PM2.5
x1.4
PM2.5 concentration in Saint Charles is currently 1.4 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Saint Charles?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Saint Charles air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Thursday, May 16 | Good 29 AQI US |  | 77° 59° |  4.5 mp/h |
| Friday, May 17 | Good 34 AQI US |  | 84.2° 60.8° | 4.5 mp/h |
| Saturday, May 18 | Good 36 AQI US | | 87.8° 64.4° | 8.9 mp/h |
| Today | Good 39 AQI US | 30% | 87.8° 64.4° | 8.9 mp/h |
| Monday, May 20 | Moderate 68 AQI US  | 50% | 86° 66.2° | 11.2 mp/h |
| Tuesday, May 21 | Moderate 66 AQI US | 70% | 89.6° 68° | 17.9 mp/h |
| Wednesday, May 22 | Moderate 55 AQI US | 100% | 78.8° 59° | 11.2 mp/h |
| Thursday, May 23 | Good 15 AQI US | | 75.2° 53.6° | 6.7 mp/h |
| Friday, May 24 | Good 44 AQI US |  | 84.2° 60.8° | 11.2 mp/h |
| Saturday, May 25 | Moderate 61 AQI US | 100% | 89.6° 68° | 8.9 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 Charles air quality data attribution
1Contributor
- 1 Anonymous contributor
1 station
Anonymous Contributor
Data validated and calibrated by IQAirWhere is the cleanest air quality in Saint Charles?
AQI US, Metric