Be the first to measure and contribute air quality data to your community
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
5 people follow this city
Saint Charles Air Quality Map
Real-time Saint Charles air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Saint Charles today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Moderate | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Saint Charles?
| Weather | Clear sky |
| Temperature | 66.2°F |
| Humidity | 84% |
| Wind | 5.8 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 90 |
| 2 | San Bernardino, California | 86 |
| 3 | Redlands, California | 81 |
| 4 | Yucaipa, California | 79 |
| 5 | Coachella, California | 77 |
| 6 | Palm Desert, California | 77 |
| 7 | Marana, Arizona | 75 |
| 8 | The Woodlands, Texas | 75 |
| 9 | Rapid City, South Dakota | 74 |
| 10 | Evanston, Illinois | 73 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
70*
live AQI index
Moderate
Overview
What is the current air quality in Saint Charles?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 70* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 19.4*µg/m³ | |
!
PM2.5
x3.9
PM2.5 concentration in Saint Charles is currently 3.9 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Saint Charles?
 | 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 Charles air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 70 AQI US | | 78.8° 57.2° |  6.7 mp/h |
| Sunday, May 19 | Moderate 68 AQI US |  60% | 77° 59° | 6.7 mp/h |
| Monday, May 20 | Moderate 69 AQI US | 90% | 82.4° 55.4° | 11.2 mp/h |
| Tuesday, May 21 | Moderate 68 AQI US | 90% | 78.8° 62.6° | 15.7 mp/h |
| Wednesday, May 22 | Moderate 61 AQI US | 80% | 69.8° 53.6° | 20.1 mp/h |
| Thursday, May 23 | Good 29 AQI US  | | 69.8° 48.2° | 11.2 mp/h |
| Friday, May 24 | Good 9 AQI US | | 75.2° 50° | 13.4 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Saint Charles?
No locations are available.
AQI US, Metric