Chart air quality data
Nitrogen dioxide at Cannon Hill, Friday 30 September 2022 about Nitrogen dioxide
None of the data is validated (0% validated, 0/24 records)
Legend to air quality category colours about category values
- Good
- Fair
- Poor
- Very poor
- Extremely poor
Chart data
| Datetime | Hourly measurement |
|---|---|
| 2022-09-30 23:00:00 | 0.009 |
| 2022-09-30 22:00:00 | 0.011 |
| 2022-09-30 21:00:00 | 0.014 |
| 2022-09-30 20:00:00 | 0.01 |
| 2022-09-30 19:00:00 | 0.007 |
| 2022-09-30 18:00:00 | 0.005 |
| 2022-09-30 17:00:00 | 0.003 |
| 2022-09-30 16:00:00 | 0.005 |
| 2022-09-30 15:00:00 | 0.01 |
| 2022-09-30 14:00:00 | 0.002 |
| 2022-09-30 13:00:00 | 0.007 |
| 2022-09-30 12:00:00 | 0.004 |
| 2022-09-30 11:00:00 | 0.003 |
| 2022-09-30 10:00:00 | 0.006 |
| 2022-09-30 09:00:00 | 0.01 |
| 2022-09-30 08:00:00 | 0.015 |
| 2022-09-30 07:00:00 | 0.013 |
| 2022-09-30 06:00:00 | 0.012 |
| 2022-09-30 05:00:00 | 0.018 |
| 2022-09-30 04:00:00 | 0.021 |
| 2022-09-30 03:00:00 | 0.022 |
| 2022-09-30 02:00:00 | 0.02 |
| 2022-09-30 01:00:00 | 0.022 |
| 2022-09-30 00:00:00 | 0.021 |
None of the data is validated (0% validated, 0/48 records)
About air quality categories
Air quality categories are used to make it easier to interpret air quality data by reducing the complexity associated with different pollutant concentration units and air quality guideline values.
Each air quality measurement from a monitoring station is assigned an air quality category rating based on comparison of the measurement value against the relevant air quality guideline. Five colour-coded air quality categories are used, being ‘Good’ (green), ‘Fair’ (yellow), ‘Poor’ (orange), ‘Very poor’ (red) or ‘Extremely poor’ (dark red). Values greater than the air quality guideline will be appear as ‘Poor’, ‘Very poor’ or ‘Extremely poor’.
About Hydrogen sulfide (30min)
Hydrogen sulfide is a flammable, colorless gas that smells like rotten eggs. People usually can smell hydrogen sulfide at low concentrations in air ranging from 0.5 to 300 parts per billion (ppb). Hydrogen sulfide occurs naturally in crude petroleum, natural gas, volcanic gases, and hot springs. It can also result from bacterial breakdown of organic matter. Industrial sources of hydrogen sulfide include petroleum refineries, natural gas plants, petrochemical plants, coke oven plants, food processing plants, and tanneries.
The guideline for Hydrogen sulfide is 5ppb (30 min avg) for odour nuisance and 108ppb (24hr avg) for health and wellbeing.
Hydrogen sulfide (30min) is measured in parts per billion.
