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Air Quality
Barcelos · updated at 17:00Air Quality Index · US EPA scale
Moderate
Acceptable; unusually sensitive people may notice mild discomfort.
Main pollutantPM2.510.3 µg/m³53
050100150200300+
Temperature22°Humidity62%Wind6 km/h WNWUV index2
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 AQI55PM2.513:00
53PM2.514:00
52PM2.515:00
52PM2.516:00
52PM2.517:00
46PM2.518:00
45PM2.519:00
48PM2.520:00
47PM2.521:00
49PM2.522:00
47PM2.523:00
Tomorrow52PM2.500:00
53PM2.501:00
54PM2.502:00
55PM2.503:00
55PM2.504:00
56PM2.505:00
58PM2.506:00
58PM2.507:00
59PM2.508:00
59PM2.509:00
59PM2.510:00
59PM2.511:00
59PM2.512:00
Worst at 08:00 59Best at 19:00 45
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
Today27/09
25°16°Moderate66max
Today27/0925°16°
25°16°Moderate
66maxHour by hourAQI · PM2.5 · main
00:005411µg/m³PM2.5
01:005511µg/m³PM2.5
02:005712µg/m³PM2.5
03:005913µg/m³PM2.5
04:006316µg/m³PM2.5
05:006617µg/m³PM2.5
06:006416µg/m³PM2.5
07:006316µg/m³PM2.5
08:006416µg/m³PM2.5
09:006617µg/m³PM2.5
10:006617µg/m³PM2.5
11:005511µg/m³PM2.5
12:005511µg/m³PM2.5
13:005411µg/m³PM2.5
14:005511µg/m³PM2.5
15:005411µg/m³PM2.5
16:005310µg/m³PM2.5
17:005210µg/m³PM2.5
18:00509µg/m³PM2.5
19:005310µg/m³PM2.5
20:005511µg/m³PM2.5
21:005310µg/m³PM2.5
22:005210µg/m³PM2.5
23:005210µg/m³PM2.5
Worst at 05:00Best at 18:00
Tomorrow28/0925°16°Moderate61max
Tomorrow28/0925°16°
25°16°Moderate
61maxHour by hourAQI · PM2.5 · main
00:005210µg/m³PM2.5
01:005210µg/m³PM2.5
02:005511µg/m³PM2.5
03:005612µg/m³PM2.5
04:005813µg/m³PM2.5
05:005411µg/m³PM2.5
06:005210µg/m³PM2.5
07:005310µg/m³PM2.5
08:005712µg/m³PM2.5
09:006115µg/m³PM2.5
10:005914µg/m³PM2.5
11:005713µg/m³PM2.5
12:005813µg/m³PM2.5
13:005512µg/m³PM2.5
14:005310µg/m³PM2.5
15:005210µg/m³PM2.5
16:005210µg/m³PM2.5
17:005210µg/m³PM2.5
18:00468µg/m³PM2.5
19:00458µg/m³PM2.5
20:00489µg/m³PM2.5
21:00478µg/m³PM2.5
22:00499µg/m³PM2.5
23:00479µg/m³PM2.5
Worst at 09:00Best at 19:00
Tue29/09
21°17°Moderate60max
Tue29/0921°17°
21°17°Moderate
60maxHour by hourAQI · PM2.5 · main
00:005210µg/m³PM2.5
01:005310µg/m³PM2.5
02:005411µg/m³PM2.5
03:005511µg/m³PM2.5
04:005511µg/m³PM2.5
05:005612µg/m³PM2.5
06:005813µg/m³PM2.5
07:005813µg/m³PM2.5
08:005913µg/m³PM2.5
09:005914µg/m³PM2.5
10:005914µg/m³PM2.5
11:005914µg/m³PM2.5
12:005913µg/m³PM2.5
13:005913µg/m³PM2.5
14:006014µg/m³PM2.5
15:006014µg/m³PM2.5
16:005914µg/m³PM2.5
17:005813µg/m³PM2.5
18:005813µg/m³PM2.5
19:005813µg/m³PM2.5
20:005712µg/m³PM2.5
21:005713µg/m³PM2.5
22:005712µg/m³PM2.5
23:005210µg/m³PM2.5
Worst at 14:00Best at 00:00
Wed30/09
21°14°Moderate75max
Wed30/0921°14°
21°14°Moderate
75maxHour by hourAQI · PM2.5 · main
00:00529µg/m³PM2.5
01:005411µg/m³PM2.5
02:005713µg/m³PM2.5
03:005813µg/m³PM2.5
04:005914µg/m³PM2.5
05:005914µg/m³PM2.5
06:005914µg/m³PM2.5
07:005913µg/m³PM2.5
08:006014µg/m³PM2.5
09:005913µg/m³PM2.5
10:005813µg/m³PM2.5
11:005713µg/m³PM2.5
12:005813µg/m³PM2.5
13:006014µg/m³PM2.5
14:006115µg/m³PM2.5
15:006315µg/m³PM2.5
16:006215µg/m³PM2.5
17:006115µg/m³PM2.5
18:006114µg/m³PM2.5
19:006114µg/m³PM2.5
20:006416µg/m³PM2.5
21:006818µg/m³PM2.5
22:007220µg/m³PM2.5
23:007522µg/m³PM2.5
Worst at 23:00Best at 00:00
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
BarcelosNearby cities
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Air quality in Carvalhas, Barcelos (BR)
Air quality in the parish of Carvalhas, Barcelos (Braga): air quality index (AQI), PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide for today, tomorrow and the day after.
