Hourly Weather | Today Wednesday, April 15, 2026
Lowell, Massachusetts
6 AM
Cloudy Night
61°
Feels Like 59°
19
Humidity: 79%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
61°
Feels Like 61°
13
Humidity: 77%
UV Index: 1
Wind: 5 mph
8 AM
Cloudy Weather
61°
Feels Like 59°
0
Humidity: 86%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 75%
UV Index: 1
Wind: 7 mph
10 AM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 68%
UV Index: 2
Wind: 8 mph
11 AM
Cloudy Weather
68°
Feels Like 70°
1
Humidity: 62%
UV Index: 3
Wind: 8 mph
12 PM
Cloudy Weather
72°
Feels Like 73°
1
Humidity: 56%
UV Index: 4
Wind: 9 mph
1 PM
Cloudy Weather
73°
Feels Like 75°
4
Humidity: 52%
UV Index: 4
Wind: 8 mph
2 PM
Cloudy Weather
75°
Feels Like 77°
13
Humidity: 47%
UV Index: 3
Wind: 8 mph
3 PM
Cloudy Weather
73°
Feels Like 73°
13
Humidity: 51%
UV Index: 2
Wind: 9 mph
4 PM
Cloudy Weather
72°
Feels Like 70°
17
Humidity: 55%
UV Index: 2
Wind: 9 mph
5 PM
Cloudy Weather
70°
Feels Like 66°
47
Humidity: 58%
UV Index: 1
Wind: 9 mph
6 PM
Sunny with a Chance of Thunderstorms
66°
Feels Like 59°
51
Humidity: 74%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
63°
Feels Like 61°
47
Humidity: 78%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
61°
Feels Like 59°
34
Humidity: 83%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
59°
Feels Like 57°
34
Humidity: 82%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
57°
Feels Like 55°
37
Humidity: 90%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
57°
Feels Like 57°
47
Humidity: 87%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 12.59 µg/m³
  • PM10: 17.5 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.46 µg/m³
  • PM10: 17.34 µg/m³
  • O3: 0.031 ppm
  • NO2: 4.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.35 µg/m³
  • PM10: 17.16 µg/m³
  • O3: 0.029 ppm
  • NO2: 5.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.35 µg/m³
  • PM10: 17.07 µg/m³
  • O3: 0.028 ppm
  • NO2: 6.5 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 12.45 µg/m³
  • PM10: 17 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.9 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 13.86 µg/m³
  • PM10: 18.21 µg/m³
  • O3: 0.037 ppm
  • NO2: 6.5 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 15.62 µg/m³
  • PM10: 19.42 µg/m³
  • O3: 0.052 ppm
  • NO2: 4.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

1 PM
76 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 19.36 µg/m³
  • PM10: 22.96 µg/m³
  • O3: 0.062 ppm
  • NO2: 3 ppb
  • SO2: 0.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

2 PM
94 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 21.2 µg/m³
  • PM10: 24.91 µg/m³
  • O3: 0.068 ppm
  • NO2: 2.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

3 PM
95 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 20.5 µg/m³
  • PM10: 24.32 µg/m³
  • O3: 0.068 ppm
  • NO2: 2.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

4 PM
84 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 18.27 µg/m³
  • PM10: 22 µg/m³
  • O3: 0.065 ppm
  • NO2: 2.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

5 PM
70 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 15.92 µg/m³
  • PM10: 19.61 µg/m³
  • O3: 0.060 ppm
  • NO2: 2.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.15 µg/m³
  • PM10: 17.87 µg/m³
  • O3: 0.055 ppm
  • NO2: 3.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.28 µg/m³
  • PM10: 17.11 µg/m³
  • O3: 0.050 ppm
  • NO2: 4.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.74 µg/m³
  • PM10: 16.65 µg/m³
  • O3: 0.047 ppm
  • NO2: 5 ppb
  • SO2: 0.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.13 µg/m³
  • PM10: 15.97 µg/m³
  • O3: 0.043 ppm
  • NO2: 5 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.45 µg/m³
  • PM10: 15.02 µg/m³
  • O3: 0.040 ppm
  • NO2: 5.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.52 µg/m³
  • PM10: 13.66 µg/m³
  • O3: 0.037 ppm
  • NO2: 5.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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