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Cos Cob (Connecticut) (US)

Air Quality Trend (last 7 days)

Good (0-50)
Moderate (51-100)
Unhealthy for Sensitive Groups (101-150)
Unhealthy (151-200)
Very Unhealthy (201-300)
Hazardous (300+)

Weather - 48h MET Norway

Сніг
0°C
Сніг
Humidity
88.7%
Wind
7 m/s
Pressure
1016.5 hPa
Direction
71°
Sunrise
05:00
Sunset
17:00
24h Forecast:
Temp.
-2° / 0°
Precip.
27.4mm
Max wind
11.4 m/s

Hourly Forecast

22.02
Now
Weather
0.3
7
22.02
19:00
Weather
0.4
7
22.02
20:00
Weather
0.5
8
22.02
21:00
Weather
0.4
8
22.02
22:00
Weather
-0°
0.5
9
22.02
23:00
Weather
-0°
0.9
9
23.02
00:00
Weather
-0°
1.6
8
23.02
01:00
Weather
-1°
1.1
9
23.02
02:00
Weather
-1°
0.7
9
23.02
03:00
Weather
-1°
1.7
10
23.02
04:00
Weather
-1°
1.6
10
23.02
05:00
Weather
-1°
1.9
10
23.02
06:00
Weather
-1°
2.1
10
23.02
07:00
Weather
-1°
1.4
11
23.02
08:00
Weather
-1°
0.9
11
23.02
09:00
Weather
-2°
2.3
11
23.02
10:00
Weather
-2°
2.1
11
23.02
11:00
Weather
-2°
1.5
11
23.02
12:00
Weather
-2°
1.3
11
23.02
13:00
Weather
-2°
1.2
11
23.02
14:00
Weather
-2°
1.1
10
23.02
15:00
Weather
-2°
0.7
10
23.02
16:00
Weather
-2°
0.5
11
23.02
17:00
Weather
-2°
0.7
11

Temperature

0°C
-2°C
18:00
0°C
19:00
0°C
20:00
0°C
21:00
0°C
22:00
-0°C
23:00
-0°C
00:00
-0°C
01:00
-1°C
02:00
-1°C
03:00
-1°C
04:00
-1°C
05:00
-1°C
06:00
-1°C
07:00
-1°C
08:00
-1°C
09:00
-2°C
10:00
-2°C
11:00
-2°C
12:00
-2°C
13:00
-2°C
14:00
-2°C
15:00
-2°C
16:00
-2°C
17:00
-2°C
18:00 05:00 17:00

Precipitation

2.3mm
0mm
18:00
0.3mm
19:00
0.4mm
20:00
0.5mm
21:00
0.4mm
22:00
0.5mm
23:00
0.9mm
00:00
1.6mm
01:00
1.1mm
02:00
0.7mm
03:00
1.7mm
04:00
1.6mm
05:00
1.9mm
06:00
2.1mm
07:00
1.4mm
08:00
0.9mm
09:00
2.3mm
10:00
2.1mm
11:00
1.5mm
12:00
1.3mm
13:00
1.2mm
14:00
1.1mm
15:00
0.7mm
16:00
0.5mm
17:00
0.7mm
18:00 05:00 17:00

Wind

11.4m/s
0m/s
18:00
6.7 m/s
19:00
7.4 m/s
20:00
7.7 m/s
21:00
7.9 m/s
22:00
8.9 m/s
23:00
8.7 m/s
00:00
8.4 m/s
01:00
9 m/s
02:00
9.3 m/s
03:00
9.7 m/s
04:00
10.1 m/s
05:00
9.8 m/s
06:00
9.7 m/s
07:00
10.8 m/s
08:00
11 m/s
09:00
11 m/s
10:00
11.3 m/s
11:00
11.2 m/s
12:00
11.3 m/s
13:00
10.7 m/s
14:00
9.8 m/s
15:00
10.1 m/s
16:00
11.1 m/s
17:00
11.4 m/s
18:00 05:00 17:00

Radiation

No sensor within 100 km.

We display the worst measurements from all stations in the area. This approach provides a more cautious assessment of air quality, accounting for local pollution sources.

AQI
49.3 km
92
30.7%

Measurement time: 2026-02-22 19:00

Calculated from PM2.5/PM10

PM2.5
49.3 km
32 µg/m3
38.1%

Measurement time: 2026-02-22 19:00

source: Aqicn

O3
13.9 km
31.2 µg/m3
19.5%

Measurement time: 2026-02-22 19:00

source: Aqicn

NO2
13.9 km
11.4 µg/m3
5.7%

Measurement time: 2026-02-22 19:00

source: Aqicn

CO
13.9 km
0.0034 mg/m3
0%

Measurement time: 2026-02-22 19:00

source: Aqicn

Info


Latitude: 41.03343
Longitude: -73.59957


Solar Energy

Low
180.8 W/m²
Solar Radiation
Solar Calculator
Calculate energy production for Cos Cob

About Air Quality in Cos Cob

Air quality in Cos Cob is monitored in real-time by sensors and measurement stations. On this page you'll find current data on major air pollutants including particulate matter PM2.5 and PM10, nitrogen dioxide (NO2), ozone (O3), and radiation levels.

Common Pollutants in Cos Cob

  • PM2.5 - fine particulate matter up to 2.5 micrometers, particularly harmful to health
  • PM10 - particulate matter up to 10 micrometers from traffic and industry
  • NO2 - nitrogen dioxide mainly emitted by vehicles
  • O3 - tropospheric ozone formed in photochemical reactions

When is Air Quality Best in Cos Cob?

Generally, the best air quality occurs:

  • Early morning (5:00-7:00 AM) before rush hour traffic
  • After rainfall which cleanses the atmosphere
  • During strong winds that disperse pollutants
  • In summer months when heating systems are less used

Tips for Runners in Cos Cob

If you're planning outdoor activities in Cos Cob, always check the current AQI value. When AQI exceeds 100, consider moving your workout indoors or shortening the distance. People with respiratory issues, children, and seniors should be especially cautious during elevated pollution levels. Choose routes away from busy streets and industrial areas.