Yesterday’s Data
* The Port of Los Angeles completed its upgrade of the air quality monitoring network on October 12, 2023. Click here for current operational status.
* ALL DATA IS PRELIMINARY.
* DATA IS PRESENTED IN PACIFIC STANDARD TIME EVEN DURING DAYLIGHT SAVINGS TIME.
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| Monitored Parameter | Averaging Period | Max Value | Units | State Standard | Federal Standard | Air Quality Index |
|---|---|---|---|---|---|---|
| O3 | 1 hr | 0.053 | ppm | 0.090 | -- | -- |
| O3 | 8 hr | 0.044 | ppm | 0.070 | 0.070 | Good |
| PM10 | 24 hr | 41.9 | ug/m3 | 50.0 | 150.0 | Good |
| PM2.5 | 24 hr | 12.5 | ug/m3 | -- | 35.0 | Moderate |
| NO2 | 1 hr | 0.027 | ppm | 0.180 | 0.100 | Good |
| CO | 1 hr | 0.3 | ppm | 20.0 | 35.0 | Good |
| CO | 8 hr | 0.3 | ppm | 9.0 | 9.0 | Good |
| SO2 | 1 hr | 0.001 | ppm | -- | 0.075 | Good |
| SO2 | 24 hr | 0.001 | ppm | 0.040 | 0.140 | -- |
| Wind Speed | 1 hr | 8.6 | mph | -- | -- | -- |
| Wind Direction | 1 hr | NE | direction | -- | -- | -- |
| BC | 1 hr | 0.898 | ug/m3 | -- | -- | -- |
| BC | 24 hr | 0.651 | ug/m3 | -- | -- | -- |
| Temperature | 1 hr | 85.9° | deg F | -- | -- | -- |
| Relative Humidity | 1 hr | 83.7 | % | -- | -- | -- |
| Rain | 1 hr | 0.00 | in | -- | -- | -- |
| Rain-Daily | Daily Total | 0.00 | in | -- | -- | -- |
| Rain-Monthly | Monthly Total | 0.00 | in | -- | -- | -- |
| Rain-Annual | Annual Total | -- | in | -- | -- | -- |