AddAir quality in O'Fallon
Air quality index (AQI⁺) and PM2.5 air pollution in O'Fallon • 531 Followers • 19:00, Oct 07 Local time
24*
US AQI⁺Good
Main pollutant:
PM2.5
4.5 µg/m³
20°
10 km/h
78 %
Hourly forecast
O'Fallon air quality index (AQI⁺) forecast
Daily forecast
O'Fallon air quality index (AQI⁺) forecast
| Today | 45 |  | 26° 11° |  12 km/h | 56% |
| Thu | 57 | | 27° 12° | 18 km/h | 47% |
| Fri | 58 |  | 27° 16° | 22 km/h | 48% |
Air pollutants
What is the current air quality in O'Fallon?
PM2.5 concentration currently meets the WHO annual PM2.5 guideline.
Health recommendations
 Enjoy outdoor activities |
 Open your windows to bring clean, fresh air indoors Get a monitor |
Protect yourself from air pollution in O'Fallon
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
Pollen
What is the pollen count in O'Fallon today?
Index
High
 Tree None | 0% |
 Grass None | 0% |
 Weed High | 75% |
Source:
wetter.comHealth recommendations
Enjoy outdoor activities |
Open your windows to bring clean, fresh air indoors Get a monitor |
Pollen
What is the pollen count in O'Fallon today?
Index
High
Tree None | 0% |
Grass None | 0% |
Weed High | 75% |
Source:
wetter.comProtect yourself from air pollution in O'Fallon
Monitor the air you breathe
Get accurate AirVisual air quality readings and real-time insights for cleaner air. Monitors that reveal pollution sources, highlight when air purifier use is needed.
Medical grade air purifiers
Trusted worldwide, the HealthPro Series uses HyperHEPA technology. Filters ultrafine particles other air purifiers miss, delivering medical-grade protection.
Powerful, stylish air purifiers
Compact and powerful, the Atem Series combines Swiss engineering with high-performance air purification, filtering ultrafine particles with HyperHEPA technology.
Most polluted locations near O'Fallon
Worldwide AQI⁺ ranking
Historic air quality near O'Fallon
History
Historic air quality graph for O'Fallon
Historic air quality near O'Fallon
History
Historic air quality graph for O'Fallon
Most polluted locations near O'Fallon
Worldwide AQI⁺ ranking
