🌍 Live Air Quality Near Me

City detected: Ashburn, US

Yesterday AQI: Good 😊 (1 of 5)

Tomorrow AQI: Good 😊 (1)

UV Index: Not available

Pollutant Levels (μg/m³)

• CO: 130.76 – Carbon Monoxide (from combustion, harmful at high levels) (Low)
• NO: 0 – Nitric Oxide (contributes to smog) (Low)
• NO2: 1.79 – Nitrogen Dioxide (irritates lungs) (Low)
• O3: 56.21 – Ozone (harmful near ground) (Low)
• SO2: 0.64 – Sulfur Dioxide (from burning fossil fuels) (Low)
• PM2_5: 7.91 – Fine Particles (penetrates lungs deeply) (Low)
• PM10: 9.34 – Coarse Particles (dust/pollen sized) (Low)
• NH3: 1.44 – Ammonia (from agriculture/industry) (Low)

🌱 What is AQI?

The Air Quality Index (AQI) is a standardized scale used worldwide to describe how clean or polluted the air is. It ranges from 1 (Good) to 5 (Very Poor) in the European system we use at AirNearby.

📊 How AQI is Calculated

AQI is calculated by measuring the concentration of several key pollutants in the air, including:

• PM2.5 – fine particles that can penetrate deep into the lungs
• PM10 – larger dust and pollen-sized particles
• NO₂ – Nitrogen Dioxide from traffic and industry
• O₃ – Ground-level Ozone formed by sunlight and emissions
• SO₂ – Sulfur Dioxide from burning fossil fuels
• CO – Carbon Monoxide from combustion

🌍 Why AQI Matters

Air pollution directly affects your health. A low AQI (1–2) means the air is safe to breathe for everyone. Higher values (4–5) can cause health problems, especially for sensitive groups like children, the elderly, and people with asthma or heart disease.

📈 The AQI Scale (1–5)

• 1 – Good 😊 Air quality is clean and poses little or no risk.
• 2 – Fair 🙂 Acceptable air quality, but some pollutants may slightly affect sensitive groups.
• 3 – Moderate 😐 Air quality is acceptable, but pollution may affect sensitive groups.
• 4 – Poor 😷 Unhealthy for sensitive groups and may affect the general public.
• 5 – Very Poor ☠️ Serious health effects for everyone, limit outdoor activities.

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About AirNearby.com

AirNearby.com helps you track air quality near me and across major US cities. We use the official AQI (Air Quality Index) scale and detailed pollutant levels so you know when it’s safe to go outside. Data is updated hourly and includes yesterday’s air quality, today’s status, tomorrow’s forecast, and UV index.