Hourly Weather | Today Tuesday, August 25, 2026
Lowell, Massachusetts
4 PM
Cloudy Weather
79°
Feels Like 79°
18
Humidity: 51%
UV Index: 4
Wind: 9 mph
5 PM
Sunny with a Chance of Thunderstorms
77°
Feels Like 73°
51
Humidity: 53%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
75°
Feels Like 75°
47
Humidity: 56%
UV Index: 2
Wind: 8 mph
7 PM
Cloudy Weather
73°
Feels Like 72°
29
Humidity: 61%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 66%
UV Index: 0
Wind: 6 mph
9 PM
Night
70°
Feels Like 66°
0
Humidity: 74%
UV Index: 0
Wind: 6 mph
10 PM
Night
66°
Feels Like 64°
0
Humidity: 82%
UV Index: 0
Wind: 6 mph
11 PM
Night
63°
Feels Like 63°
0
Humidity: 89%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 5.17 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.73 µg/m³
  • PM10: 4.92 µg/m³
  • O3: 0.043 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.47 µg/m³
  • PM10: 4.67 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.24 µg/m³
  • PM10: 4.47 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.81 µg/m³
  • PM10: 4.08 µg/m³
  • O3: 0.028 ppm
  • NO2: 4.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.36 µg/m³
  • PM10: 3.66 µg/m³
  • O3: 0.023 ppm
  • NO2: 5 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

10 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.93 µg/m³
  • PM10: 3.27 µg/m³
  • O3: 0.019 ppm
  • NO2: 5 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 PM
15 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.56 µg/m³
  • PM10: 2.93 µg/m³
  • O3: 0.016 ppm
  • NO2: 4.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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