Color-coded chart titled 'Air Quality Index' created by CARB (California Air Resources Board), showing six AQI ranges with associated health advice: 0–50 (green): Good – Enjoy your usual outdoor activities. 51–100 (yellow): Moderate – Extremely sensitive children and adults should refrain from strenuous outdoor activities. 101–150 (orange): Unhealthy for Sensitive Groups – Sensitive children and adults should limit prolonged outdoor activity. 151–200 (red): Unhealthy – Sensitive groups should avoid outdoor exposure; others should limit prolonged activity. 201–300 (purple): Very Unhealthy – Sensitive groups should stay indoors; others should avoid outdoor activity. 301–500 (dark purple): Hazardous – Everyone should avoid all outdoor exertion.
Air quality can change by the minute — especially during wildfires – so check the AQI as often as you check the weather. Stay informed with real-time data from air monitors & sensors near you.
➡️ www.airnow.gov
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