Stay updated with real-time air quality in Lewiston, Maine featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
35
Good
Lewiston, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.01 μg/m³
0
55
155
255
425
605+
38.08 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
2.83 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lewiston, Maine
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AQI 38
Good
2.87μg/m³
PM2.5
17.00μg/m³
PM10
40.64ppb
O3
0.48ppb
SO2
2.96ppb
NO2
0.15ppm
CO
AQI 33
Good
3.96μg/m³
PM2.5
15.08μg/m³
PM10
35.54ppb
O3
0.46ppb
SO2
5.08ppb
NO2
0.14ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
15.97μg/m³
PM10
34.38ppb
O3
0.44ppb
SO2
2.87ppb
NO2
0.15ppm
CO
AQI 44
Good
8.33μg/m³
PM2.5
19.84μg/m³
PM10
40.02ppb
O3
0.31ppb
SO2
2.41ppb
NO2
0.14ppm
CO
AQI 34
Good
6.09μg/m³
PM2.5
13.01μg/m³
PM10
37.01ppb
O3
0.52ppb
SO2
2.13ppb
NO2
0.14ppm
CO
AQI 44
Good
8.32μg/m³
PM2.5
19.67μg/m³
PM10
40.14ppb
O3
0.31ppb
SO2
2.39ppb
NO2
0.14ppm
CO
Air quality and pollutant data for Maine, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Lewiston, Maine is updated every hour for accuracy.
In the past 24 hours, the air quality in Lewiston, Maine was at its worst at 11:00:00 on 2026-05-14.
In the last 24 hours, the best air quality in Lewiston, Maine was observed at 01:00:00 on 2026-05-13.
As of now, the AQI in Lewiston, Maine is 35, indicating Good conditions.
Lewiston, Maine air has the highest levels of O3.
Poor air quality in Lewiston, Maine means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Lewiston, Maine are currently 3.45 μg/m3.
The PM10 concentration in Lewiston, Maine is 17.007 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Lewiston, Maine is 0.164 ppm.
Currently, Lewiston, Maine has a sulfur dioxide (SO2) concentration of 0.467 ppb.
The current ozone (O3) level in Lewiston, Maine at the moment is 38.083 ppm.
Nitrogen dioxide (NO2) level in Lewiston, Maine at the moment is 2.825 ppb.
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