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Londonderry (New Hampshire) (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

Pochmurno
11°C
Pochmurno
Humidity
98.5%
Wind
3 m/s
Pressure
1004.2 hPa
Direction
234°
Sunrise
04:00
Sunset
16:00
24h Forecast:
Temp.
2° / 11°
Precip.
0.1mm
Max wind
7.4 m/s

Hourly Forecast

05.04
Now
Weather
11°
05.04
22:00
Weather
11°
0.1
05.04
23:00
Weather
11°
06.04
00:00
Weather
10°
06.04
01:00
Weather
6
06.04
02:00
Weather
6
06.04
03:00
Weather
5
06.04
04:00
Weather
06.04
05:00
Weather
06.04
06:00
Weather
06.04
07:00
Weather
06.04
08:00
Weather
5
06.04
09:00
Weather
5
06.04
10:00
Weather
06.04
11:00
Weather
06.04
12:00
Weather
06.04
13:00
Weather
7
06.04
14:00
Weather
7
06.04
15:00
Weather
7
06.04
16:00
Weather
7
06.04
17:00
Weather
7
06.04
18:00
Weather
7
06.04
19:00
Weather
7
06.04
20:00
Weather
6

Temperature

11°C
2°C
21:00
11°C
22:00
11°C
23:00
11°C
00:00
10°C
01:00
9°C
02:00
7°C
03:00
6°C
04:00
5°C
05:00
5°C
06:00
3°C
07:00
4°C
08:00
4°C
09:00
3°C
10:00
2°C
11:00
2°C
12:00
3°C
13:00
5°C
14:00
5°C
15:00
6°C
16:00
7°C
17:00
8°C
18:00
9°C
19:00
9°C
20:00
9°C
21:00 08:00 20:00

Precipitation

0.1mm
0mm
22:00
0.1mm
21:00 08:00 20:00

Wind

7.4m/s
0m/s
21:00
3.3 m/s
22:00
3.2 m/s
23:00
5 m/s
00:00
4.7 m/s
01:00
6 m/s
02:00
6.2 m/s
03:00
5.3 m/s
04:00
4.7 m/s
05:00
4.3 m/s
06:00
4.4 m/s
07:00
4.5 m/s
08:00
5.3 m/s
09:00
5.1 m/s
10:00
4.8 m/s
11:00
4.8 m/s
12:00
4.8 m/s
13:00
7.4 m/s
14:00
7.4 m/s
15:00
6.8 m/s
16:00
6.8 m/s
17:00
7.1 m/s
18:00
6.8 m/s
19:00
6.6 m/s
20:00
6.3 m/s
21:00 08:00 20:00

Radiation

0.066 uSv
61.8 km
8.3%

Measurement time: 2026-04-05 00:29

source: epa_radnet

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
0.6 km
67
22.3%

Measurement time: 2026-04-05 23:00

Calculated from PM2.5/PM10

PM2.5
0.6 km
20 µg/m3
23.8%

Measurement time: 2026-04-05 23:00

source: Aqicn

O3
0.6 km
17.6 µg/m3
11%

Measurement time: 2026-04-05 23:00

source: Aqicn

PM10
0.6 km
7 µg/m3
5%

Measurement time: 2026-04-05 23:00

source: Aqicn

NO2
0.6 km
2.5 µg/m3
1.3%

Measurement time: 2026-04-05 23:00

source: Aqicn

SO2
0.6 km
0.2 µg/m3
0.1%

Measurement time: 2026-04-05 23:00

source: Aqicn

CO
0.6 km
0.0023 mg/m3
0%

Measurement time: 2026-04-05 23:00

source: Aqicn

Info


Latitude: 42.86509
Longitude: -71.37395


Solar Energy

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0 W/m²
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About Air Quality in Londonderry

Air quality in Londonderry 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 Londonderry

  • 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 Londonderry?

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 Londonderry

If you're planning outdoor activities in Londonderry, 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.