Hourly Weather | Today Thursday, February 26, 2026
Lowell, Massachusetts
3 AM
Cloudy Night
28°
Feels Like 23°
49
Frost Risk: 97%
Humidity: 99%
UV Index: 0
Wind: 7 mph
4 AM
Cloudy Night
28°
Feels Like 23°
34
Frost Risk: 98%
Humidity: 92%
UV Index: 0
Wind: 7 mph
5 AM
Night
28°
Feels Like 23°
34
Frost Risk: 94%
Humidity: 84%
UV Index: 0
Wind: 7 mph
6 AM
Night
28°
Feels Like 21°
22
Frost Risk: 85%
Humidity: 74%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
28°
Feels Like 21°
0
Humidity: 67%
UV Index: 0
Wind: 9 mph
8 AM
Cloudy Weather
30°
Feels Like 25°
0
Humidity: 60%
UV Index: 1
Wind: 9 mph
9 AM
Cloudy Weather
34°
Feels Like 27°
0
Humidity: 52%
UV Index: 2
Wind: 10 mph
10 AM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 46%
UV Index: 3
Wind: 12 mph
11 AM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 43%
UV Index: 3
Wind: 12 mph
12 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 41%
UV Index: 4
Wind: 12 mph
1 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 41%
UV Index: 3
Wind: 10 mph
2 PM
Cloudy Weather
41°
Feels Like 37°
0
Humidity: 40%
UV Index: 2
Wind: 9 mph
3 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 43%
UV Index: 2
Wind: 8 mph
4 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 46%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 48%
UV Index: 0
Wind: 7 mph
6 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 50%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
32°
Feels Like 28°
0
Humidity: 54%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 58%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 59%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
28°
Feels Like 23°
0
Humidity: 58%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 59%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.3 µg/m³
  • PM10: 19.61 µg/m³
  • O3: 0.030 ppm
  • NO2: 11.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

4 AM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.17 µg/m³
  • PM10: 17.13 µg/m³
  • O3: 0.031 ppm
  • NO2: 9.8 ppb
  • SO2: 0.6 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.

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

Pollutant Concentrations:

  • PM2.5: 12.7 µg/m³
  • PM10: 14.22 µg/m³
  • O3: 0.032 ppm
  • NO2: 7.7 ppb
  • SO2: 0.6 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.

6 AM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.59 µg/m³
  • PM10: 11.76 µg/m³
  • O3: 0.033 ppm
  • NO2: 6.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

7 AM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.17 µg/m³
  • PM10: 10.21 µg/m³
  • O3: 0.034 ppm
  • NO2: 6.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8 µg/m³
  • PM10: 9.05 µg/m³
  • O3: 0.034 ppm
  • NO2: 7 ppb
  • SO2: 0.5 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.83 µg/m³
  • PM10: 7.89 µg/m³
  • O3: 0.036 ppm
  • NO2: 6.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.59 µg/m³
  • PM10: 6.54 µg/m³
  • O3: 0.038 ppm
  • NO2: 5.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.84 µg/m³
  • PM10: 3.31 µg/m³
  • O3: 0.044 ppm
  • NO2: 3 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.42 µg/m³
  • PM10: 2.83 µg/m³
  • O3: 0.047 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 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: 2.68 µg/m³
  • PM10: 3.08 µg/m³
  • O3: 0.049 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.29 µg/m³
  • PM10: 3.72 µg/m³
  • O3: 0.050 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.92 µg/m³
  • PM10: 4.43 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 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: 4.5 µg/m³
  • PM10: 5.09 µg/m³
  • O3: 0.049 ppm
  • NO2: 3.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.15 µg/m³
  • PM10: 5.87 µg/m³
  • O3: 0.047 ppm
  • NO2: 5.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.21 µg/m³
  • PM10: 7.15 µg/m³
  • O3: 0.042 ppm
  • NO2: 8.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.82 µg/m³
  • PM10: 9.07 µg/m³
  • O3: 0.039 ppm
  • NO2: 10.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

8 PM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.41 µg/m³
  • PM10: 10.94 µg/m³
  • O3: 0.035 ppm
  • NO2: 11.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

9 PM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.5 µg/m³
  • PM10: 12.19 µg/m³
  • O3: 0.033 ppm
  • NO2: 12.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.51 µg/m³
  • PM10: 12.15 µg/m³
  • O3: 0.032 ppm
  • NO2: 11.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.35 µg/m³
  • PM10: 10.78 µg/m³
  • O3: 0.032 ppm
  • NO2: 10.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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