Classification index
Caution (AQI 101–150)
Summary: Sensitive groups are more likely to experience health effects at this range.
Health implications
Children, older adults, and people with heart/lung conditions may feel irritation or reduced tolerance for exertion.
Recommended actions
- Reduce prolonged strenuous outdoor activity for sensitive groups.
- Shift exercise to cleaner indoor environments when possible.
- Track local trend direction closely.
For schools and workplaces
Adjust schedules and intensity to minimize health stress for vulnerable participants.
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When Sensitive Groups Should Step Back
AQI 101–150 introduces irritation risks for children, older adults, and people with heart or lung conditions during longer outdoor exertion.
Reduce prolonged strenuous outdoor activity if you're in a sensitive group. Shift exercise indoors with filtration where possible. Track the trend direction — a rising AQI may push you into Unhealthy territory within hours. Schools should adjust recess and athletic schedules.