Here you can follow live how the Fine dust levels in the air over Hanover are developing – and whether the Federal Environment Agency classifies the air as good or bad.
Hanover. What is the air quality in Hanover? At this point we show the data from the measuring station on Göttinger Straße in Linden-Süd. It records the mass of Fine dust particles up to PM10 in size per cubic meter of air. The crucial limit is 50 micrograms of these particles per cubic meter of air – it may be exceeded 35 times per year, then countermeasures must be taken to avoid EU penalties.
What is the air quality in Hanover currently?
The pollutants measured are categorized by the Federal Environment Agency using these threshold values. The pollutant that has the worst air quality determines the index color. The current measured values for Fine dust, ozone and nitrogen dioxide are given in brackets.
Measurements are taken at the “Hannover Verkehr” station on Göttinger Straße in Linden-Süd.
How should air quality measurements be assessed?
Three values are measured: Fine dust, nitrogen dioxide and ozone. The air is “very bad” if one of the three values exceeds its highest limit: 200 μg/m³ for nitrogen dioxide, 100 μg/m³ for particulate matter and 240 μg/m³ for ozone. The limit values for “bad” air are accordingly (in the same order) at 101-200, 51-100 and 181-240. The air is “moderate” if a peak value is in these ranges: 41-100, 35-50 and 121-180.
The hourly average (nitrogen dioxide and ozone) or the hourly daily moving average (Fine dust) are measured.
What should I do if the air quality is “poor” or “very poor”?
Very bad: “Negative health effects can occur,” writes the Federal Environment Agency. “If you are sensitive or have previously damaged respiratory tract, you should avoid physical exertion outdoors.”
Moderate: “Short-term adverse health effects are unlikely,” writes the Federal Environment Agency. However, effects caused by combinations of air pollutants and long-term exposure to the individual substance cannot be ruled out. The effect of the pollutants could be intensified by additional stimuli such as pollen, so that effects on sensitive groups of people (e.g. asthmatics) would be more likely.
Good: Green light from the Federal Environment Agency: “Enjoy your outdoor activities, no adverse health effects are to be expected.”
Very good: “The best conditions for spending a lot of time outdoors,” says the Federal Environment Agency.
What is the smoke from fireworks made of?
Fireworks smoke consists largely of Fine dust. These are tiny dust particles that are only a fraction of a millimeter in size and are not visible to the human eye, but can be harmful to health, as the Federal Environment Agency writes in a brochure.
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