St Louis
7 monitoring stations · readings from 55 to 64
Average AQI
Air quality in St Louis
Air quality in St Louis is currently 59 on the AQI scale, which falls in the Moderate band. That number is the average across every monitoring station reporting in St Louis right now.
We aggregate 7 stations across St Louis. Individual stations range from 55 at the cleanest to 64 at the worst, so conditions vary across St Louis — the local figure matters more than the average.
St Louis breaks down into 7 stations you can open individually. Of those listed below, Near North Riverfront is reading highest at 64 and Forest Park lowest at 55.
Readings refresh hourly from the official monitoring networks we track. Conditions can change quickly, so check back before planning time outdoors.
What to do at moderate levels
Outdoor activity
Fine for most people. If you are planning a long or intense session outdoors, the early morning is usually cleaner.
Sensitive groups
Unusually sensitive people may notice mild irritation. Keep reliever medication to hand if you use it.
Indoor air
Ventilating is still worthwhile. Consider closing up during traffic peaks if you live on a busy road.
Stations in St Louis
About St Louis
Coordinates
38.633, -90.229
Centroid of monitored stations
Stations
7
Reporting in this area
Spread
55 – 64
Cleanest to worst station reading
St Louis air quality, answered
St Louis is currently reading an AQI of 59, which is Moderate. It is the average across 7 reporting stations.
Fine for most people. If you are planning a long or intense session outdoors, the early morning is usually cleaner. Unusually sensitive people may notice mild irritation. Keep reliever medication to hand if you use it.
59 sits in the Moderate band of the air quality index. The index runs from 0 to 500, and the lower the number the cleaner the air.
We currently aggregate 7 stations in St Louis, reading between 55 and 64.
Of the stations currently listed for St Louis, Near North Riverfront is reading highest at 64 (Moderate).
Hourly. We pull from the official monitoring networks that publish for this city, and this page refreshes on the same cadence.
See St Louis on the map.
Every station around it, live — or find out what today's reading means for you personally.