Hourly Weather | Today Wednesday, January 14, 2026
Nashua, New Hampshire
8 AM
Cloudy Weather
37°
Feels Like 37°
20
Humidity: 79%
Wind: 5 mph
UV Index: 0
9 AM
Cloudy Weather
39°
Feels Like 39°
20
Humidity: 70%
Wind: 5 mph
UV Index: 1
10 AM
Cloudy Weather
43°
Feels Like 41°
20
Humidity: 66%
Wind: 6 mph
UV Index: 1
11 AM
Cloudy Weather
46°
Feels Like 45°
20
Humidity: 59%
Wind: 7 mph
UV Index: 1
12 PM
Cloudy Weather
48°
Feels Like 46°
18
Humidity: 55%
Wind: 7 mph
UV Index: 1
1 PM
Cloudy Weather
50°
Feels Like 48°
15
Humidity: 52%
Wind: 7 mph
UV Index: 1
2 PM
Cloudy Weather
48°
Feels Like 46°
15
Humidity: 54%
Wind: 7 mph
UV Index: 1
3 PM
Cloudy Weather
46°
Feels Like 46°
19
Humidity: 60%
Wind: 6 mph
UV Index: 0
4 PM
Cloudy Weather
46°
Feels Like 45°
49
Humidity: 65%
Wind: 5 mph
UV Index: 0
5 PM
Rainy Weather
45°
Feels Like 43°
56
Humidity: 68%
Wind: 5 mph
UV Index: 0
6 PM
Rainy Weather
45°
Feels Like 43°
56
Humidity: 72%
Wind: 5 mph
UV Index: 0
7 PM
Cloudy Weather
43°
Feels Like 43°
40
Humidity: 79%
Wind: 4 mph
UV Index: 0
8 PM
Cloudy Weather
39°
Feels Like 39°
34
Humidity: 84%
Wind: 4 mph
UV Index: 0
9 PM
Cloudy Weather
39°
Feels Like 39°
39
Humidity: 84%
Wind: 4 mph
UV Index: 0
10 PM
Cloudy Weather
39°
Feels Like 39°
49
Humidity: 84%
Wind: 4 mph
UV Index: 0
11 PM
Rainy Weather
39°
Feels Like 37°
62
Humidity: 88%
Wind: 4 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
43 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.29 µg/m³
  • PM10: 13.99 µg/m³
  • O3: 0.032 ppm
  • NO2: 5.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.1 µg/m³
  • PM10: 14.75 µg/m³
  • O3: 0.031 ppm
  • NO2: 7.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.84 µg/m³
  • PM10: 15.61 µg/m³
  • O3: 0.030 ppm
  • NO2: 8.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.47 µg/m³
  • PM10: 16.4 µg/m³
  • O3: 0.029 ppm
  • NO2: 9.3 ppb
  • SO2: 1 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

12 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.94 µg/m³
  • PM10: 17.01 µg/m³
  • O3: 0.028 ppm
  • NO2: 10.2 ppb
  • SO2: 1 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.3 µg/m³
  • PM10: 17.47 µg/m³
  • O3: 0.027 ppm
  • NO2: 11.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.02 µg/m³
  • PM10: 18.35 µg/m³
  • O3: 0.025 ppm
  • NO2: 12.7 ppb
  • SO2: 1 ppb
  • CO: 0.24 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.6 µg/m³
  • PM10: 19.11 µg/m³
  • O3: 0.022 ppm
  • NO2: 15 ppb
  • SO2: 0.8 ppb
  • CO: 0.25 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.77 µg/m³
  • PM10: 19.43 µg/m³
  • O3: 0.019 ppm
  • NO2: 17.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.27 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.9 µg/m³
  • PM10: 19.64 µg/m³
  • O3: 0.016 ppm
  • NO2: 19.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.28 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.05 µg/m³
  • PM10: 19.83 µg/m³
  • O3: 0.014 ppm
  • NO2: 20.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.32 µg/m³
  • PM10: 20.2 µg/m³
  • O3: 0.013 ppm
  • NO2: 20.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.31 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.53 µg/m³
  • PM10: 20.56 µg/m³
  • O3: 0.014 ppm
  • NO2: 18.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.31 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.86 µg/m³
  • PM10: 21.18 µg/m³
  • O3: 0.015 ppm
  • NO2: 16.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.30 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.33 µg/m³
  • PM10: 22.1 µg/m³
  • O3: 0.016 ppm
  • NO2: 15.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.30 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.55 µg/m³
  • PM10: 22.68 µg/m³
  • O3: 0.018 ppm
  • NO2: 13.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.29 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.