Piedras Negras air quality
Updated 10/21 21:01
Current AQI
US EPA scale · observed at 21:00
73
ModerateUnusually sensitive people should limit prolonged outdoor exertion.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 4,5 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 4,7 µg/m³ | Particles ≤ 10 µm |
| O₃ | 98 µg/m³ | Ozone |
| NO₂ | 4,2 µg/m³ | Nitrogen dioxide |
| SO₂ | 1,6 µg/m³ | Sulphur dioxide |
| CO | 172 µg/m³ | Carbon monoxide |
AQI, next 24 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 21:00 | 73 | Moderate |
| 22:00 | 68 | Moderate |
| 23:00 | 60 | Moderate |
| 00:00 | 50 | Good |
| 01:00 | 47 | Good |
| 02:00 | 43 | Good |
| 03:00 | 40 | Good |
| 04:00 | 36 | Good |
| 05:00 | 33 | Good |
| 06:00 | 31 | Good |
| 07:00 | 32 | Good |
| 08:00 | 32 | Good |
| 09:00 | 33 | Good |
| 10:00 | 34 | Good |
| 11:00 | 34 | Good |
| 12:00 | 35 | Good |
| 13:00 | 35 | Good |
| 14:00 | 36 | Good |
| 15:00 | 36 | Good |
| 16:00 | 37 | Good |
| 17:00 | 38 | Good |
| 18:00 | 40 | Good |
| 19:00 | 42 | Good |
| 20:00 | 43 | Good |