Moderate Air Quality
Concentration levels of key air pollutants (µg/m³)
Fine particulate matter ≤ 2.5 µm — penetrates deep into lungs
Coarse particles ≤ 10 µm — dust, pollen, mould spores
Ground-level ozone — can trigger respiratory issues
Nitrogen dioxide — from traffic & combustion engines
Sulphur dioxide — from burning coal and volcanic activity
Carbon monoxide — odourless gas from incomplete combustion
US EPA Air Quality Index — standard categories
| AQI Range | Category | Meaning |
|---|---|---|
| 0–50 | Good | Air quality is satisfactory; little or no risk. |
| 51–100 | Moderate | Acceptable; some pollutants may concern very sensitive individuals. |
| 101–150 | Unhealthy for Sensitive | Sensitive groups may experience health effects. |
| 151–200 | Unhealthy | Everyone may begin to experience health effects. |
| 201–300 | Very Unhealthy | Health alert — risk of serious effects for everyone. |
| 301+ | Hazardous | Emergency conditions — entire population is at risk. |
Feels Like Temperature
Feels warmer due to humidity
Humidity
Moderate moisture in the air
Wind Speed
Light breeze from the west
Visibility
Slight haze in the atmosphere
UV Index
Use sun protection outdoors
Rain Probability
Chance of light showers