Hourly Weather | Today Thursday, July 23, 2026
Rochester, New Hampshire
8 AM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 61%
UV Index: 2
Wind: 7 mph
9 AM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 55%
UV Index: 3
Wind: 7 mph
10 AM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 49%
UV Index: 5
Wind: 8 mph
11 AM
Cloudy Weather
72°
Feels Like 77°
0
Humidity: 44%
UV Index: 7
Wind: 8 mph
12 PM
Cloudy Weather
75°
Feels Like 81°
0
Humidity: 40%
UV Index: 8
Wind: 8 mph
1 PM
Cloudy Weather
77°
Feels Like 84°
0
Humidity: 37%
UV Index: 9
Wind: 8 mph
2 PM
Cloudy Weather
79°
Feels Like 84°
0
Humidity: 35%
UV Index: 8
Wind: 8 mph
3 PM
Cloudy Weather
79°
Feels Like 84°
0
Humidity: 34%
UV Index: 7
Wind: 8 mph
4 PM
Cloudy Weather
81°
Feels Like 84°
0
Humidity: 33%
UV Index: 5
Wind: 7 mph
5 PM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 35%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 38%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 43%
UV Index: 1
Wind: 4 mph
8 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 52%
UV Index: 0
Wind: 4 mph
9 PM
Night
68°
Feels Like 66°
0
Humidity: 60%
UV Index: 0
Wind: 4 mph
10 PM
Night
64°
Feels Like 66°
0
Humidity: 67%
UV Index: 0
Wind: 4 mph
11 PM
Night
63°
Feels Like 63°
0
Humidity: 74%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 0.9 µg/m³
  • O3: 0.020 ppm
  • NO2: 2.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

9 AM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.56 µg/m³
  • PM10: 0.75 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.59 µg/m³
  • PM10: 0.79 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

11 AM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.89 µg/m³
  • PM10: 1.1 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

12 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.07 µg/m³
  • PM10: 1.27 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

1 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.14 µg/m³
  • PM10: 1.35 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

2 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.23 µg/m³
  • PM10: 1.47 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

3 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 1.57 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

4 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.38 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

5 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.44 µg/m³
  • PM10: 1.71 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

6 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.72 µg/m³
  • PM10: 2.1 µg/m³
  • O3: 0.041 ppm
  • NO2: 4.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 2.76 µg/m³
  • O3: 0.030 ppm
  • NO2: 9 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

8 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 3.41 µg/m³
  • O3: 0.022 ppm
  • NO2: 12.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

9 PM
16 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.18 µg/m³
  • PM10: 4.02 µg/m³
  • O3: 0.018 ppm
  • NO2: 13.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

10 PM
15 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 3.66 µg/m³
  • PM10: 4.53 µg/m³
  • O3: 0.016 ppm
  • NO2: 13.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

11 PM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.01 µg/m³
  • PM10: 4.84 µg/m³
  • O3: 0.016 ppm
  • NO2: 12 ppb
  • SO2: 0.2 ppb
  • CO: 0.19 ppm

Health Recommendations:

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