Air Quality - National Weather Service
Philadelphia Mt Holly NJ PA DE MD Air Quality
www.weather.govI don’t have live access to current air quality data right now, but I can point you to reliable sources for the latest AQI updates and how to interpret them.
Key sources for latest air quality index
- AirNow: Official U.S. Air Quality Index (AQI) data, current conditions, and forecasts. Great for quick daily checks and city-by-city details. [citation: AirNow, 2026]
- WAQI (World Air Quality Index): Real-time map and city-specific AQI values with health guidance. Useful for comparing multiple locations. [citation: WAQI, 2026]
- National Weather Service: Provides AQI information and health guidance in the context of weather and forecasts in the U.S. [citation: NWS, 2026]
- Local and national environmental agencies: Many countries’ environmental agencies publish real-time AQI or air quality reports; check your country’s official environmental portal for the latest data.
How to read AQI categories (brief)
- 0-50 Good: Air quality is satisfactory; low health risk for the general population.
- 51-100 Moderate: Acceptable; some people, especially sensitive individuals, may experience minor effects.
- 101-150 Unhealthy for Sensitive Groups: Affects people with respiratory or heart conditions, older adults, and children more than the general public.
- 151-200 Unhealthy: Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
- 201-300 Very Unhealthy: Health warnings of emergency conditions; outdoor activities should be limited.
- 300+ Hazardous: Serious health effects possible; avoid outdoor exertion.
If you tell me your city or region (e.g., Marseille or a nearby area), I can give you a concise interpretation likely to apply there and help you plan outdoor activities today.