South Korea

Wonju

Name: Wonju
Address: South Korea

129

Unhealthy for Sensitive Groups

Air Quality Index

Updated Mar 21, 02:00 AM · Data from OpenAQ

Current Pollution Levels in Wonju

PM2.5

Sensitive

µg/m³

PM10

Moderate

µg/m³

O₃

—

0.0333

ppm

Wonju Air Quality 24-Hour Trend

Air Quality Analysis for Wonju

Wonju, South Korea air quality this morning is rated Unhealthy for Sensitive Groups with an Air Quality Index (AQI) of 129. The primary pollutant PM2.5 is measured at 47 µg/m³. PM10 (coarse particles) is at 68 µg/m³.

The current PM2.5 level exceeds the WHO 24-hour guideline of 45 µg/m³. Prolonged exposure at this level poses health risks, particularly for vulnerable populations including children, elderly, and those with respiratory conditions.

PM2.5 levels are stable, staying close to the recent average of 43.2 µg/m³.

Health Recommendation

Sensitive groups in Wonju — including children, elderly, and those with asthma or heart disease — should limit prolonged outdoor activity. Consider wearing an N95 mask if spending extended time outdoors.

Outdoor Exercise

Reduce intensity

Window Ventilation

Keep windows closed

Recent Wonju Air Quality Measurements

Time	AQI	PM2.5	PM10
02:00 AM	129	47	68
01:00 AM	122	44	65
12:00 AM	124	45	65
11:55 PM	124	45	65
11:22 PM	117	42	68
11:08 PM	102	36	67

Frequently Asked Questions

Is air quality in Wonju safe today?

Wonju air quality is unhealthy for sensitive groups today (AQI 129). Children, elderly, and people with respiratory conditions should limit prolonged outdoor exposure.

What AQI level is considered unhealthy?

According to EPA standards, AQI 0-50 is Good, 51-100 is Moderate, 101-150 is Unhealthy for Sensitive Groups, 151-200 is Unhealthy, 201-300 is Very Unhealthy, and above 300 is Hazardous. The WHO recommends annual PM2.5 levels below 15 µg/m³ for optimal health.

Should I wear a mask today in Wonju?

With Wonju's AQI at 129, wearing an N95 mask is recommended for outdoor activities, especially for sensitive groups. PM2.5 levels are at 47 µg/m³, which exceeds the EPA moderate threshold.