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Luftqualität
Melfa · updated at 07:19Air Quality Index · US EPA scale
Mäßig
Acceptable; unusually sensitive people may notice mild discomfort.
Main pollutantPM2.512.0 µg/m³56
050100150200300+
Temperatur18°Luftfeuchte85%Wind5 km/h NWUV-Index0
Health recommendations
MäßigGeneral population
Outdoor activities are fine. If you get a cough or eye irritation, take it easier.
Sensitive groups
Very sensitive people should watch for symptoms and slow down if needed.
children, older adults, pregnant women and people with asthma, COPD or heart diseaseOutdoor exerciseGo ahead
WindowsOpen is fine
MaskNot needed
Sensitive groupsWatch symptoms
Next 24 hours
hourly AQI54O₃19:00
52PM2.520:00
50O₃21:00
49PM2.522:00
49PM2.523:00
Morgen49PM2.500:00
48PM2.501:00
48PM2.502:00
44PM2.503:00
45PM2.504:00
43PM2.505:00
42PM2.506:00
42PM2.507:00
43PM2.508:00
44PM2.509:00
47PM2.510:00
53PM2.511:00
55PM2.512:00
86O₃13:00
106O₃14:00
115O₃15:00
113O₃16:00
106O₃17:00
94O₃18:00
Worst at 15:00 115Best at 06:00 42
Pollutants now
concentration · sub-indexWhat it isPM2.5
Fine particles under 2.5 µm — small enough to reach the lungs and bloodstream. They come from wildfires, diesel engines, industry and smoke, and are the pollutant most linked to heart and lung disease.
WHO 2021 guideline: 15.0 µg/m³ (24-h mean)What it isPM10
Inhalable particles up to 10 µm: road and construction dust, pollen, soot and sea salt. They irritate the nose, throat and airways and worsen asthma and bronchitis.
WHO 2021 guideline: 45.0 µg/m³ (24-h mean)What it isOzon (O₃)
Ground-level ozone forms when sunlight reacts with vehicle and industrial gases. It peaks on hot, sunny afternoons and causes coughing, chest pain and reduced lung function during exercise.
WHO 2021 guideline: 100 µg/m³ (24-h mean)What it isStickstoffdioxid (NO₂)
A gas produced mainly by fuel burning in cars, trucks and power plants. Highest near busy roads. It inflames the airways and increases asthma attacks.
WHO 2021 guideline: 25.0 µg/m³ (24-h mean)What it isSchwefeldioxid (SO₂)
A gas released by burning coal and oil in industry, refineries and ships. It irritates the eyes and airways; people with asthma are especially sensitive.
WHO 2021 guideline: 40.0 µg/m³ (24-h mean)What it isKohlenmonoxid (CO)
A colourless, odourless gas from incomplete combustion — vehicle exhaust, stoves and fires. It reduces the blood's ability to carry oxygen and is dangerous in enclosed spaces.
WHO 2021 guideline: 4000 µg/m³ (24-h mean)Tap a day to see it hour by hour
Heute30/09
24°18°Mäßig71max
Heute30/0924°18°
24°18°Mäßig
71maxStündlichAQI · PM2.5 · main
00:00529µg/m³PM2.5
01:00519µg/m³PM2.5
02:00519µg/m³PM2.5
03:00499µg/m³PM2.5
04:00519µg/m³PM2.5
05:005210µg/m³PM2.5
06:005411µg/m³PM2.5
07:005612µg/m³PM2.5
08:005813µg/m³PM2.5
09:005913µg/m³PM2.5
10:006014µg/m³PM2.5
11:006416µg/m³PM2.5
12:007019µg/m³PM2.5
13:007120µg/m³PM2.5
14:006818µg/m³PM2.5
15:006316µg/m³PM2.5
16:006014µg/m³PM2.5
17:005712µg/m³PM2.5
18:005611µg/m³O₃
19:005410µg/m³O₃
20:00529µg/m³PM2.5
21:00509µg/m³O₃
22:00499µg/m³PM2.5
23:00499µg/m³PM2.5
Worst at 13:00Best at 03:00
Morgen01/1027°19°Ungesund für empfindliche Gruppen115max
Morgen01/1027°19°
27°19°Ungesund für empfindliche Gruppen
115maxStündlichAQI · PM2.5 · main
00:00499µg/m³PM2.5
01:00489µg/m³PM2.5
02:00489µg/m³PM2.5
03:00448µg/m³PM2.5
04:00458µg/m³PM2.5
05:00438µg/m³PM2.5
06:00428µg/m³PM2.5
07:00428µg/m³PM2.5
08:00438µg/m³PM2.5
09:00448µg/m³PM2.5
10:00478µg/m³PM2.5
11:005310µg/m³PM2.5
12:005511µg/m³PM2.5
13:008612µg/m³O₃
14:0010612µg/m³O₃
15:0011512µg/m³O₃
16:0011312µg/m³O₃
17:0010612µg/m³O₃
18:009412µg/m³O₃
19:007411µg/m³O₃
20:005911µg/m³O₃
21:005411µg/m³PM2.5
22:005411µg/m³PM2.5
23:005612µg/m³PM2.5
Worst at 15:00Best at 06:00
Fr02/1028°20°Mäßig99max
Fr02/1028°20°
28°20°Mäßig
99maxStündlichAQI · PM2.5 · main
00:005913µg/m³PM2.5
01:006114µg/m³PM2.5
02:005914µg/m³PM2.5
03:005813µg/m³PM2.5
04:005813µg/m³PM2.5
05:005712µg/m³PM2.5
06:005612µg/m³PM2.5
07:005511µg/m³PM2.5
08:005310µg/m³PM2.5
09:00489µg/m³PM2.5
10:00448µg/m³O₃
11:00497µg/m³O₃
12:00637µg/m³O₃
13:00847µg/m³O₃
14:00987µg/m³O₃
15:00996µg/m³O₃
16:00937µg/m³O₃
17:00848µg/m³O₃
18:00739µg/m³O₃
19:005810µg/m³O₃
20:005612µg/m³PM2.5
21:005914µg/m³PM2.5
22:006416µg/m³PM2.5
23:006617µg/m³PM2.5
Worst at 15:00Best at 10:00
Sa03/10
24°16°Mäßig63max
Sa03/1024°16°
24°16°Mäßig
63maxStündlichAQI · PM2.5 · main
00:006316µg/m³PM2.5
01:005914µg/m³PM2.5
02:005612µg/m³PM2.5
03:005310µg/m³PM2.5
04:00499µg/m³PM2.5
05:00397µg/m³PM2.5
06:00336µg/m³PM2.5
07:00315µg/m³O₃
08:00294µg/m³O₃
09:00313µg/m³O₃
10:00342µg/m³O₃
11:00372µg/m³O₃
12:00403µg/m³O₃
13:00433µg/m³O₃
14:00454µg/m³O₃
15:00465µg/m³O₃
16:00466µg/m³O₃
17:00467µg/m³O₃
18:00468µg/m³O₃
19:00468µg/m³O₃
20:00478µg/m³PM2.5
21:00489µg/m³PM2.5
22:00519µg/m³PM2.5
23:005310µg/m³PM2.5
Worst at 00:00Best at 08:00
Index scale
US EPA · 0 to 5000 – 50
GutClean air, no risk for anyone.
51 – 100
MäßigAcceptable; unusually sensitive people may notice mild discomfort.
101 – 150
Ungesund für empfindliche GruppenChildren, older adults and people with heart or lung disease may have symptoms.
151 – 200
UngesundEveryone may feel effects; sensitive groups, more serious ones.
201 – 300
Sehr ungesundHealth alert: increased risk for the whole population.
301 – 500
GefährlichEmergency: the entire population is likely to be affected.
Index computed with the US EPA method from concentrations modelled by CAMS (Copernicus). These are model estimates, not station measurements; for official data check your local environmental agency.
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Luftqualität in Melfa (VA) — 3 Tage
Luftqualität in Melfa (Virginia): Index (AQI), PM2.5, PM10, Ozon (O₃), Stickstoffdioxid (NO₂), Schwefeldioxid (SO₂) und Kohlenmonoxid (CO) für heute, morgen und übermorgen. Erfahren Sie, ob die Luft gut, mäßig, ungesund oder gefährlich ist.
