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Air quality in St. Charles
Air quality index (AQI) and PM2.5 air pollution in St. Charles
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St. Charles Air Quality Map
Real-time St. Charles air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in St. 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 St. Charles?
| Weather | Scattered clouds |
| Temperature | 64.4°F |
| Humidity | 85% |
| Wind | 3.9 mp/h |
| Pressure | 30.2 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Saint Clair, Pennsylvania | 62 |
| 2 | San Antonio, Texas | 60 |
| 3 | Corpus Christi, Texas | 58 |
| 4 | Champaign, Illinois | 55 |
| 5 | Potomac, Maryland | 55 |
| 6 | The Woodlands, Texas | 55 |
| 7 | Urbana, Illinois | 55 |
| 8 | Charleston, West Virginia | 54 |
| 9 | Detroit, Michigan | 54 |
| 10 | Burns Harbor, Indiana | 53 |
(local time)
SEE WORLD AQI RANKING
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US AQI
31*
live AQI index
Good
Overview
What is the current air quality in St. Charles?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 31* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 7.6*µg/m³ | |
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PM2.5
x1.5
PM2.5 concentration in St. Charles is currently 1.5 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in St. Charles?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
St. Charles air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 31 AQI US |  | 82.4° 51.8° |  4.5 mp/h |
| Monday, Apr 29 | Good 50 AQI US |  | 86° 59° | 6.7 mp/h |
| Tuesday, Apr 30 | Good 39 AQI US | | 84.2° 59° | 11.2 mp/h |
| Wednesday, May 1 | Good 49 AQI US |  30% | 78.8° 59° | 8.9 mp/h |
| Thursday, May 2 | Good 45 AQI US | | 73.4° 50° | 6.7 mp/h |
| Friday, May 3 | Good 49 AQI US | | 77° 50° | 8.9 mp/h |
| Saturday, May 4 | Moderate 74 AQI US  | 90% | 82.4° 59° | 8.9 mp/h |
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News
The latest air quality news and resources.
Where is the cleanest air quality in St. Charles?
No locations are available.
AQI US, Metric