Classification index
Hazardous (AQI 301+)
Summary: Emergency conditions where serious health effects are likely for everyone.
Health implications
Rapid symptom onset is possible across all groups. Exposure should be minimized immediately.
Recommended actions
- Stay indoors and avoid non-essential outdoor activity.
- Use sealed and filtered indoor environments where available.
- Follow emergency/public health advisories closely.
For schools and workplaces
Suspend outdoor operations and activate emergency continuity procedures until conditions improve.