Depending on the different pollutants in the air, like pollen or wildfire smoke, some days can be easier to breathe than ...

Notably, an AQI between zero and 50 is considered "good ... warmest January on record last month despite the development of La Nina, a climate pattern that usually brings cooler global ...

All resources will provide a number for the air quality index. If it’s greater than 100, that is considered unhealthy for sensitive and at-risk groups. If it’s greater than 150, it is ...

In the US, Los Angeles was the most polluted major city, while Seattle had the cleanest air among large American cities. Ontario, California recorded the highest pollution levels in the country.

AQI is calculated into six color-coded categories ... For scale, UCLA Health reported that the Los Angeles wildfires earlier this year caused 'unhealthy' and 'hazardous' air pollution at ...

the air quality index (AQI) hovers around 100, mainly due to pollutants from vehicle emissions. Se activa #ContingenciaAmbiental por ozono en la Zona Metropolitana de Valle de México.