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Air quality in O'Fallon
Air quality index (AQI) and PM2.5 air pollution in O'Fallon
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O'Fallon Air Quality Map
Real-time O'Fallon air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in O'Fallon today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in O'Fallon?
| Weather | Broken clouds |
| Temperature | 80.6°F |
| Humidity | 64% |
| Wind | 4 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Mecca, California | 84 |
| 2 | Indio, California | 61 |
| 3 | Chapel Hill, North Carolina | 57 |
| 4 | Coachella, California | 57 |
| 5 | Pahrump, Nevada | 57 |
| 6 | Reseda, California | 56 |
| 7 | San Antonio, Texas | 55 |
| 8 | Durham, North Carolina | 54 |
| 9 | Redlands, California | 54 |
| 10 | Riverside, California | 54 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
42*
live AQI index
Good
Overview
What is the current air quality in O'Fallon?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 42* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 10.2*µg/m³ | |
!
PM2.5
x2
PM2.5 concentration in O'Fallon is currently 2 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in O'Fallon?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
O'Fallon air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 42 AQI US |  90% | 80.6° 57.2° |  15.7 mp/h |
| Sunday, May 5 | Good 26 AQI US | | 69.8° 50° | 6.7 mp/h |
| Monday, May 6 | Good 45 AQI US | 60% | 73.4° 59° | 11.2 mp/h |
| Tuesday, May 7 | Good 49 AQI US | 100% | 84.2° 64.4° | 15.7 mp/h |
| Wednesday, May 8 | Good 43 AQI US | 100% | 84.2° 57.2° | 15.7 mp/h |
| Thursday, May 9 | Good 32 AQI US |  | 68° 51.8° | 17.9 mp/h |
| Friday, May 10 | Good 8 AQI US | 40% | 55.4° 46.4° | 13.4 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in O'Fallon?
No locations are available.
AQI US, Metric