Ponte da Barca
Viana do Castelo
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Air Quality

Ponte da Barca · updated at 04:15
Air Quality Index · US EPA scale
Moderate

Acceptable; unusually sensitive people may notice mild discomfort.

Main pollutantPM2.510.5 µg/m³54
050100150200300+
Temperature17°Humidity66%Wind7 km/h NUV index0

Health recommendations

Moderate
General 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 disease
Outdoor exerciseGo ahead
WindowsOpen is fine
MaskNot needed
Sensitive groupsWatch symptoms

Next 24 hours

hourly AQI
57
PM2.501:00
56
PM2.502:00
57
PM2.503:00
59
PM2.504:00
58
PM2.505:00
58
PM2.506:00
58
PM2.507:00
61
PM2.508:00
61
PM2.509:00
61
PM2.510:00
62
PM2.511:00
57
PM2.512:00
55
PM2.513:00
53
PM2.514:00
50
PM2.515:00
47
PM2.516:00
50
PM2.517:00
46
PM2.518:00
46
PM2.519:00
47
PM2.520:00
52
PM2.521:00
53
PM2.522:00
52
PM2.523:00
Tomorrow52
PM2.500:00
Worst at 11:00 62Best at 18:00 46

Next days

daily peak AQI
Sun27/09
59ModeratePM2.5
Mon28/09
62ModeratePM2.5
Tue29/09
69ModeratePM2.5
Wed30/09
77ModeratePM2.5

Pollutants now

concentration · sub-index
What 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 pollutant to read about it

Tap a day to see it hour by hour

Today27/09Overcast25°16°
ModerateMain pollutant PM2.5avg 55min 52
59max
Hour by hourAQI · PM2.5 · main
00:005310µg/m³PM2.5
01:005210µg/m³PM2.5
02:005210µg/m³PM2.5
03:005310µg/m³PM2.5
04:005411µg/m³PM2.5
05:005712µg/m³PM2.5
06:005712µg/m³PM2.5
07:005712µg/m³PM2.5
08:005511µg/m³PM2.5
09:005511µg/m³PM2.5
10:005411µg/m³PM2.5
11:005310µg/m³PM2.5
12:005210µg/m³PM2.5
13:005310µg/m³PM2.5
14:005411µg/m³PM2.5
15:005511µg/m³PM2.5
16:005411µg/m³PM2.5
17:005411µg/m³PM2.5
18:005612µg/m³PM2.5
19:005813µg/m³PM2.5
20:005913µg/m³PM2.5
21:005913µg/m³PM2.5
22:005813µg/m³PM2.5
23:005712µg/m³PM2.5
Worst at 20:00Best at 01:00
Tomorrow28/09Mist22°15°
ModerateMain pollutant PM2.5avg 55min 46
62max
Hour by hourAQI · PM2.5 · main
00:005712µg/m³PM2.5
01:005712µg/m³PM2.5
02:005612µg/m³PM2.5
03:005712µg/m³PM2.5
04:005913µg/m³PM2.5
05:005813µg/m³PM2.5
06:005813µg/m³PM2.5
07:005813µg/m³PM2.5
08:006114µg/m³PM2.5
09:006115µg/m³PM2.5
10:006114µg/m³PM2.5
11:006215µg/m³PM2.5
12:005712µg/m³PM2.5
13:005511µg/m³PM2.5
14:005310µg/m³PM2.5
15:00509µg/m³PM2.5
16:00479µg/m³PM2.5
17:00509µg/m³PM2.5
18:00468µg/m³PM2.5
19:00468µg/m³PM2.5
20:00479µg/m³PM2.5
21:005210µg/m³PM2.5
22:005310µg/m³PM2.5
23:005210µg/m³PM2.5
Worst at 11:00Best at 18:00
Tue29/09Light rain shower19°16°
ModerateMain pollutant PM2.5avg 58min 52
69max
Hour by hourAQI · PM2.5 · main
00:005210µg/m³PM2.5
01:005310µg/m³PM2.5
02:005310µg/m³PM2.5
03:005411µg/m³PM2.5
04:005310µg/m³PM2.5
05:005411µg/m³PM2.5
06:005511µg/m³PM2.5
07:005712µg/m³PM2.5
08:005813µg/m³PM2.5
09:005913µg/m³PM2.5
10:005914µg/m³PM2.5
11:005913µg/m³PM2.5
12:005914µg/m³PM2.5
13:006014µg/m³PM2.5
14:006114µg/m³PM2.5
15:006014µg/m³PM2.5
16:005914µg/m³PM2.5
17:005813µg/m³PM2.5
18:005813µg/m³PM2.5
19:006014µg/m³PM2.5
20:006617µg/m³PM2.5
21:006919µg/m³PM2.5
22:006718µg/m³PM2.5
23:005813µg/m³PM2.5
Worst at 21:00Best at 00:00
Wed30/09Patchy rain nearby20°13°
ModerateMain pollutant PM2.5avg 57min 42
77max
Hour by hourAQI · PM2.5 · main
00:00428µg/m³PM2.5
01:00428µg/m³PM2.5
02:00468µg/m³PM2.5
03:00519µg/m³PM2.5
04:005210µg/m³PM2.5
05:005310µg/m³PM2.5
06:005310µg/m³PM2.5
07:005411µg/m³PM2.5
08:005612µg/m³PM2.5
09:005712µg/m³PM2.5
10:005512µg/m³PM2.5
11:005411µg/m³PM2.5
12:005612µg/m³PM2.5
13:005813µg/m³PM2.5
14:005913µg/m³PM2.5
15:006014µg/m³PM2.5
16:006114µg/m³PM2.5
17:006014µg/m³PM2.5
18:006014µg/m³PM2.5
19:006014µg/m³PM2.5
20:006416µg/m³PM2.5
21:006919µg/m³PM2.5
22:007421µg/m³PM2.5
23:007723µg/m³PM2.5
Worst at 23:00Best at 00:00

Index scale

US EPA · 0 to 500
0–50
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), via WeatherAPI. These are model estimates, not station measurements; for official data check your local environmental agency.

Weather map

Wind, rain and temperature — Ponte da Barca
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Air quality in Ponte da Barca (VC)

Air quality in Ponte da Barca (Viana do Castelo) with up-to-date data for today, tomorrow and the day after: air quality index (AQI), fine particulate matter PM2.5 and PM10, ozone (O₃), nitrogen dioxide (NO₂), sulfur dioxide (SO₂) and carbon monoxide (CO). Find out whether the air is Good, Moderate, Unhealthy or Hazardous and make safer decisions for outdoor activities.