AddAir quality in St. Louis
Air quality index (AQI⁺) and PM2.5 air pollution in St. Louis • 4.6K Followers • 17:00, Sep 29 Local time
75
US AQI⁺Moderate
Main pollutant:
O₃
122 µg/m³
28°
14 km/h
34 %
Hourly forecast
St. Louis air quality index (AQI⁺) forecast
Daily forecast
St. Louis air quality index (AQI⁺) forecast
| Today | 74 | | 28° 15° |  15 km/h | 50% |
| Wed | 59 |  | 32° 19° | 14 km/h | 52% |
| Thu | 50 |  | 31° 21° | 19 km/h | 57% |
Air pollutants
What is the current air quality in St. Louis?
PM2.5 concentration is currently 1.2 times the World Health Organization annual PM2.5 guideline value.
Health recommendations
 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 |
Protect yourself from air pollution in St. Louis
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 St. Louis today?
Index
High
 Tree None | 0% |
 Grass None | 0% |
 Weed High | 75% |
Source:
wetter.comHealth recommendations
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 |
Pollen
What is the pollen count in St. Louis today?
Index
High
Tree None | 0% |
Grass None | 0% |
Weed High | 75% |
Source:
wetter.comProtect yourself from air pollution in St. Louis
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 St. Louis
Worldwide AQI⁺ ranking
Station ranking
Real-time AQI⁺ station ranking for stations in St. Louis
City ranking
Real-time USA AQI⁺ city ranking
Historic air quality near St. Louis
History
Historic air quality graph for St. Louis
Historic air quality near St. Louis
History
Historic air quality graph for St. Louis
Most polluted locations near St. Louis
Worldwide AQI⁺ rankingStation ranking
Real-time AQI⁺ station ranking for stations in St. Louis
City ranking
Real-time USA AQI⁺ city ranking
Measure your own air quality
Get a monitor and contribute air quality data in your city.
