Sat beside a busy road. Mornings are worse than I expected. Still air holds everything in until the sun gets up.
PM2.5
46.5 µg/m³
Peak PM2.5
46.4 µg/m³
PM10
84.9 µg/m³
Nitrogen dioxide
9.7 µg/m³
Last updated: 9/17/2026, 2:18:55 AM
Drag on chart to zoom in
| Time | PM2.5 (µg/m³) | Peak PM2.5 (µg/m³) | PM10 (µg/m³) | Nitrogen dioxide (µg/m³) |
|---|---|---|---|---|
| 9/17/2026, 2:18:55 AM | 46.5 µg/m³ | 46.4 µg/m³ | 84.9 µg/m³ | 9.7 µg/m³ |
| 9/17/2026, 2:03:54 AM | 46.1 µg/m³ | 46 µg/m³ | 83.5 µg/m³ | 9.3 µg/m³ |
| 9/17/2026, 1:48:51 AM | 46.1 µg/m³ | 46 µg/m³ | 83.8 µg/m³ | 9.7 µg/m³ |
| 9/17/2026, 1:33:49 AM | 44.8 µg/m³ | 45.6 µg/m³ | 85.6 µg/m³ | 9.2 µg/m³ |
| 9/17/2026, 1:18:47 AM | 46.3 µg/m³ | 46.1 µg/m³ | 84.2 µg/m³ | 7.4 µg/m³ |
| 9/17/2026, 1:03:48 AM | 45.8 µg/m³ | 46.1 µg/m³ | 84.8 µg/m³ | 8.3 µg/m³ |
| 9/17/2026, 12:48:45 AM | 46.2 µg/m³ | 46.3 µg/m³ | 88.8 µg/m³ | 9 µg/m³ |
| 9/17/2026, 12:33:43 AM | 45.9 µg/m³ | 46.4 µg/m³ | 87 µg/m³ | 9.4 µg/m³ |
| 9/17/2026, 12:18:41 AM | 46.1 µg/m³ | 46.3 µg/m³ | 86.3 µg/m³ | 10.3 µg/m³ |
| 9/17/2026, 12:03:37 AM | 45.8 µg/m³ | 45.9 µg/m³ | 86 µg/m³ | 9.3 µg/m³ |
| 9/16/2026, 11:48:34 PM | 46.5 µg/m³ | 46.1 µg/m³ | 88.3 µg/m³ | 9.1 µg/m³ |
| 9/16/2026, 11:33:32 PM | 46.3 µg/m³ | 46.3 µg/m³ | 88.4 µg/m³ | 8.6 µg/m³ |
| 9/16/2026, 11:18:30 PM | 46 µg/m³ | 47 µg/m³ | 89.4 µg/m³ | 9.4 µg/m³ |
| 9/16/2026, 11:03:26 PM | 47.1 µg/m³ | 47.2 µg/m³ | 93.1 µg/m³ | 9.2 µg/m³ |
| 9/16/2026, 10:48:22 PM | 48.5 µg/m³ | 47.7 µg/m³ | 94.6 µg/m³ | 9.9 µg/m³ |
| 9/16/2026, 10:33:20 PM | 47.2 µg/m³ | 49 µg/m³ | 98.7 µg/m³ | 13.2 µg/m³ |
| 9/16/2026, 10:18:18 PM | 50.1 µg/m³ | 50.4 µg/m³ | 103.4 µg/m³ | 11.3 µg/m³ |
| 9/16/2026, 10:03:17 PM | 51.9 µg/m³ | 52.2 µg/m³ | 108.9 µg/m³ | 12 µg/m³ |
| 9/16/2026, 9:48:14 PM | 52.4 µg/m³ | 54.4 µg/m³ | 114.1 µg/m³ | 15.8 µg/m³ |
| 9/16/2026, 9:33:12 PM | 54.9 µg/m³ | 56.8 µg/m³ | 119.7 µg/m³ | 17.1 µg/m³ |
| 9/16/2026, 9:18:09 PM | 57.6 µg/m³ | 60 µg/m³ | 125.7 µg/m³ | 22 µg/m³ |
| 9/16/2026, 9:03:10 PM | 62.1 µg/m³ | 64 µg/m³ | 134.5 µg/m³ | 24.1 µg/m³ |
| 9/16/2026, 8:48:07 PM | 65.9 µg/m³ | 68.5 µg/m³ | 144.7 µg/m³ | 30.2 µg/m³ |
| 9/16/2026, 8:33:05 PM | 71.5 µg/m³ | 74 µg/m³ | 153.9 µg/m³ | 36.9 µg/m³ |
| 9/16/2026, 8:18:03 PM | 78.7 µg/m³ | 79.9 µg/m³ | 166 µg/m³ | 42.5 µg/m³ |