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Air Quality Index (AQI) Converter
AQI · PM2.5 · PM10 · Health recommendations for outdoor activities
Air Quality Assessment
Moderate
🟡 Moderate - Unusually sensitive people should reduce prolonged outdoor exertion.
📊 AQI
75
🌫️ PM2.5
22.5 µg/m³
🏃 Outdoor OK?
⚠️ Limit
📊 AQI Categories & Health Effects
🟢 Good (0-50)
Air quality is satisfactory
🟡 Moderate (51-100)
Acceptable, some pollutants
🟠 Unhealthy for Sensitive Groups (101-150)
Sensitive groups may experience effects
🔴 Unhealthy (151-200)
Everyone may begin to experience effects
🟣 Very Unhealthy (201-300)
Health alert - everyone affected
⚫ Hazardous (301-500)
Health warnings of emergency conditions
🏃 Activity Recommendations by AQI
🟢 Good (0-50)
✅ Outdoor activities as usual
🟡 Moderate (51-100)
⚠️ Sensitive groups reduce prolonged exertion
🟠 Unhealthy for Sensitive (101-150)
🏠 Sensitive groups avoid prolonged outdoor exertion
🔴 Unhealthy (151-200)
🏠 Everyone limit outdoor activities, wear N95 mask if outdoors
🟣 Very Unhealthy (201-300)
🏠 Stay indoors, use air purifier, avoid all outdoor exertion
⚫ Hazardous (301+)
🏠 Stay inside, keep windows closed, consider evacuation
💡 Air Quality Health Tips
😷 Wear N95/KN95 mask on poor air days
🏠 Keep windows closed when AQI is unhealthy
💨 Use HEPA air purifiers indoors
📱 Check AQI before outdoor exercise
🌳 Exercise in parks away from traffic
🚗 Reduce driving on high pollution days
🌫️ PM2.5 Reference Levels (24-hour average)
WHO Target15 µg/m³
Good (US AQI)0-12 µg/m³
Moderate12.1-35.4 µg/m³
Unhealthy for Sensitive35.5-55.4 µg/m³
Unhealthy55.5-150.4 µg/m³
Very Unhealthy150.5-250.4 µg/m³
Hazardous250.5-500+ µg/m³
😷 AQI to PM2.5 conversion
🏃 Activity recommendations
🟢 Health risk levels
💡 Air quality tips