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Air Quality
Guarda · updated at 11:10Air Quality Index · US EPA scale
Moderate
Acceptable; unusually sensitive people may notice mild discomfort.
Main pollutantPM2.510.8 µg/m³54
050100150200300+
Temperature21°Humidity52%Wind11 km/h SUV index3
Health recommendations
ModerateGeneral 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 AQI54PM2.511:00
54PM2.512:00
56PM2.513:00
55PM2.514:00
54PM2.515:00
54PM2.516:00
51PM2.517:00
35PM2.518:00
29PM2.519:00
32PM2.520:00
33PM2.521:00
32PM2.522:00
30PM2.523:00
Tomorrow29PM2.500:00
30O₃01:00
32O₃02:00
33O₃03:00
32O₃04:00
32O₃05:00
31PM2.506:00
34PM2.507:00
42PM2.508:00
37PM2.509:00
42PM2.510:00
Worst at 13:00 56Best at 19:00 29
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 isOzone (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 isNitrogen dioxide (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 isSulfur dioxide (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 isCarbon monoxide (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
Today28/09
24°14°Moderate61max
Today28/0924°14°
24°14°Moderate
61maxHour by hourAQI · PM2.5 · main
00:006115µg/m³PM2.5
01:006014µg/m³PM2.5
02:005913µg/m³PM2.5
03:005813µg/m³PM2.5
04:005713µg/m³PM2.5
05:005713µg/m³PM2.5
06:005913µg/m³PM2.5
07:005913µg/m³PM2.5
08:005913µg/m³PM2.5
09:005914µg/m³PM2.5
10:005813µg/m³PM2.5
11:005411µg/m³PM2.5
12:005411µg/m³PM2.5
13:005612µg/m³PM2.5
14:005511µg/m³PM2.5
15:005411µg/m³PM2.5
16:005411µg/m³PM2.5
17:00519µg/m³PM2.5
18:00356µg/m³PM2.5
19:00295µg/m³PM2.5
20:00326µg/m³PM2.5
21:00336µg/m³PM2.5
22:00326µg/m³PM2.5
23:00305µg/m³PM2.5
Worst at 00:00Best at 19:00
Tomorrow29/09
18°14°Moderate61max
Tomorrow29/0918°14°
18°14°Moderate
61maxHour by hourAQI · PM2.5 · main
00:00295µg/m³PM2.5
01:00304µg/m³O₃
02:00325µg/m³O₃
03:00335µg/m³O₃
04:00325µg/m³O₃
05:00326µg/m³O₃
06:00316µg/m³PM2.5
07:00346µg/m³PM2.5
08:00428µg/m³PM2.5
09:00377µg/m³PM2.5
10:00428µg/m³PM2.5
11:005210µg/m³PM2.5
12:005411µg/m³PM2.5
13:005210µg/m³PM2.5
14:005210µg/m³PM2.5
15:005210µg/m³PM2.5
16:005310µg/m³PM2.5
17:005310µg/m³PM2.5
18:005411µg/m³PM2.5
19:005411µg/m³PM2.5
20:005512µg/m³PM2.5
21:005913µg/m³PM2.5
22:006115µg/m³PM2.5
23:005511µg/m³PM2.5
Worst at 22:00Best at 00:00
Wed30/09
20°15°Moderate52max
Wed30/0920°15°
20°15°Moderate
52maxHour by hourAQI · PM2.5 · main
00:005210µg/m³PM2.5
01:005210µg/m³PM2.5
02:00448µg/m³PM2.5
03:00326µg/m³PM2.5
04:00428µg/m³PM2.5
05:00356µg/m³PM2.5
06:00417µg/m³PM2.5
07:00326µg/m³PM2.5
08:00285µg/m³PM2.5
09:00224µg/m³O₃
10:00224µg/m³PM2.5
11:00234µg/m³PM2.5
12:00224µg/m³PM2.5
13:00193µg/m³PM2.5
14:00204µg/m³PM2.5
15:00223µg/m³O₃
16:00233µg/m³O₃
17:00263µg/m³O₃
18:00304µg/m³O₃
19:00304µg/m³O₃
20:00295µg/m³O₃
21:00285µg/m³PM2.5
22:00326µg/m³PM2.5
23:00387µg/m³PM2.5
Worst at 00:00Best at 13:00
Thu01/1023°12°Moderate51max
Thu01/1023°12°
23°12°Moderate
51maxHour by hourAQI · PM2.5 · main
00:00417µg/m³PM2.5
01:00417µg/m³PM2.5
02:00417µg/m³PM2.5
03:00366µg/m³PM2.5
04:00346µg/m³PM2.5
05:00367µg/m³PM2.5
06:00346µg/m³PM2.5
07:00336µg/m³PM2.5
08:00305µg/m³PM2.5
09:00346µg/m³PM2.5
10:00448µg/m³PM2.5
11:00519µg/m³PM2.5
12:00519µg/m³PM2.5
13:00428µg/m³PM2.5
14:00396µg/m³O₃
15:00395µg/m³O₃
16:00385µg/m³O₃
17:00375µg/m³O₃
18:00355µg/m³O₃
19:00335µg/m³O₃
20:00336µg/m³PM2.5
21:00377µg/m³PM2.5
22:00417µg/m³PM2.5
23:00438µg/m³PM2.5
Worst at 11:00Best at 08:00
Index scale
US EPA · 0 to 5000 – 50
GoodClean air, no risk for anyone.
51 – 100
ModerateAcceptable; unusually sensitive people may notice mild discomfort.
101 – 150
Unhealthy for sensitive groupsChildren, older adults and people with heart or lung disease may have symptoms.
151 – 200
UnhealthyEveryone may feel effects; sensitive groups, more serious ones.
201 – 300
Very unhealthyHealth alert: increased risk for the whole population.
301 – 500
HazardousEmergency: 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.
Parishes
GuardaAdão
Albardo
Aldeia do Bispo
Aldeia Viçosa
Alvendre
Arrifana
Avelãs da Ribeira
Avelãs de Ambom
Benespera
Casal de Cinza
Castanheira
Cavadoude
Codesseiro
Corujeira
Faia
Famalicão
Fernão Joanes
Gonçalo
Gonçalo Bocas
Guarda
Jarmelo São Miguel
Jarmelo São Pedro
João Antão
Maçainhas
Marmeleiro
Meios
Mizarela
Monte Margarida
Panoias de Cima
Pega
Nearby cities
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Air quality in Meios, Guarda (GU)
Air quality in the parish of Meios, Guarda (Guarda): air quality index (AQI), PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide for today, tomorrow and the day after.
