Rendered: 2026-08-08 13:10:08 — Live data loading from Open-Meteo API...
Recommendations are indicative. Consult local advisories if you have underlying health concerns.
Get real-time updates on air quality in O'fallon (62269), including detailed metrics for key pollutants like PM2.5, PM10, Ozone (O₃), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), and Sulfur Dioxide (SO₂).
This dashboard presents live Air Quality Index (AQI) calculations alongside a 7-day weather forecast for O'fallon, IL. Monitor changing pollution levels, relative humidity, wind speeds, and temperature trends to plan safer outdoor activities for your family.
The standard US Air Quality Index (AQI) runs from 0 to 500. Higher values indicate higher levels of air pollution:
Air quality in O'fallon, IL fluctuates based on weather patterns, traffic volume, seasonal industrial output, and atmospheric conditions.
During high PM2.5 pollution spikes (AQI > 150), standard surgical masks are insufficient. N95 or KN95 respirators are recommended for effective filtering.
Using True HEPA air purifiers inside homes and offices in O'fallon helps filter airborne dust, allergens, pollen, and dangerous fine particles.
The ZIP code 62269 is situated in O'fallon, located within St. Clair County, IL. According to US Census estimates, the 62269 postal code serves an estimated population of 35,536 residents across an area with a population density of 459.9 people per square mile. Operating under the America/Chicago timezone, local atmospheric telemetry in this area is monitored continuously via nearby regional monitoring stations.
O'fallon is categorized as a moderately populated suburban region. Suburban atmospheric profiles in this region often reflect regional air transport alongside seasonal domestic heating or commuter vehicle activity.
The primary pollutants continuously monitored in O'fallon include Fine Particulate Matter (PM2.5), Coarse Particulate Matter (PM10), Ground-level Ozone (O₃), Carbon Monoxide (CO), Nitrogen Dioxide (NO₂), and Sulfur Dioxide (SO₂).
Outdoor exercise safety in O'fallon depends on the real-time Air Quality Index (AQI). An AQI between 0 and 50 is ideal for all outdoor activities. If the index rises above 100, sensitive individuals should reduce prolonged outdoor exertion.
Air quality observations and weather metrics on this page are updated in real-time using continuous telemetry from local satellite feeds and ground station monitors.