Hourly Weather | Today Wednesday, August 12, 2026
Lewiston, Maine
7 AM
Cloudy Weather
63°
Feels Like 64°
13
Humidity: 83%
UV Index: 1
Wind: 6 mph
8 AM
Sunny Weather
66°
Feels Like 66°
0
Humidity: 75%
UV Index: 2
Wind: 6 mph
9 AM
Sunny Weather
72°
Feels Like 73°
0
Humidity: 64%
UV Index: 3
Wind: 7 mph
10 AM
Sunny Weather
75°
Feels Like 77°
0
Humidity: 55%
UV Index: 4
Wind: 8 mph
11 AM
Sunny Weather
79°
Feels Like 82°
0
Humidity: 48%
UV Index: 5
Wind: 8 mph
12 PM
Cloudy Weather
81°
Feels Like 84°
0
Humidity: 44%
UV Index: 7
Wind: 9 mph
1 PM
Cloudy Weather
81°
Feels Like 86°
0
Humidity: 41%
UV Index: 8
Wind: 9 mph
2 PM
Cloudy Weather
82°
Feels Like 86°
0
Humidity: 40%
UV Index: 7
Wind: 9 mph
3 PM
Cloudy Weather
82°
Feels Like 86°
0
Humidity: 38%
UV Index: 5
Wind: 9 mph
4 PM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 40%
UV Index: 4
Wind: 8 mph
5 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 42%
UV Index: 3
Wind: 8 mph
6 PM
Cloudy Weather
79°
Feels Like 79°
0
Humidity: 46%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
75°
Feels Like 75°
1
Humidity: 53%
UV Index: 1
Wind: 6 mph
8 PM
Cloudy Night
73°
Feels Like 72°
5
Humidity: 62%
UV Index: 0
Wind: 4 mph
9 PM
Cloudy Night
72°
Feels Like 70°
5
Humidity: 66%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
70°
Feels Like 68°
5
Humidity: 71%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
68°
Feels Like 66°
6
Humidity: 76%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.21 µg/m³
  • PM10: 1.51 µg/m³
  • O3: 0.012 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.23 µg/m³
  • PM10: 1.58 µg/m³
  • O3: 0.014 ppm
  • NO2: 2.7 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
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1 µg/m³
  • PM10: 1.17 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.5 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
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.99 µg/m³
  • PM10: 1.15 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.15 µg/m³
  • PM10: 1.29 µg/m³
  • O3: 0.029 ppm
  • NO2: 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.

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

Pollutant Concentrations:

  • PM2.5: 0.94 µg/m³
  • PM10: 1.04 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.6 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
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.87 µg/m³
  • PM10: 0.94 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.93 µg/m³
  • PM10: 1.01 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.05 µg/m³
  • PM10: 1.14 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.21 µg/m³
  • PM10: 1.31 µg/m³
  • O3: 0.039 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.

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

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 1.44 µg/m³
  • O3: 0.039 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
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.56 µg/m³
  • PM10: 1.71 µg/m³
  • O3: 0.037 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.84 µg/m³
  • PM10: 2.06 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 2.34 µg/m³
  • O3: 0.030 ppm
  • NO2: 4.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.16 µg/m³
  • PM10: 2.56 µg/m³
  • O3: 0.025 ppm
  • NO2: 5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 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: 2.11 µg/m³
  • PM10: 2.62 µg/m³
  • O3: 0.020 ppm
  • NO2: 5.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 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: 1.89 µg/m³
  • PM10: 2.43 µg/m³
  • O3: 0.016 ppm
  • NO2: 5.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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