Stay updated with real-time air quality in Maine, USA 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)
49
Good
Maine, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.14 μg/m³
0
55
155
255
425
605+
31.62 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
7.03 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Maine, USA
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| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 44
Good
7.73μg/m³
PM2.5
27.50μg/m³
PM10
34.06ppb
O3
0.43ppb
SO2
2.09ppb
NO2
0.18ppm
CO
AQI 38
Good
7.47μg/m³
PM2.5
24.28μg/m³
PM10
32.16ppb
O3
0.67ppb
SO2
2.53ppb
NO2
0.23ppm
CO
AQI 29
Good
4.90μg/m³
PM2.5
18.56μg/m³
PM10
31.45ppb
O3
0.42ppb
SO2
4.64ppb
NO2
0.23ppm
CO
AQI 30
Good
5.14μg/m³
PM2.5
19.93μg/m³
PM10
32.02ppb
O3
0.45ppb
SO2
4.46ppb
NO2
0.27ppm
CO
AQI 38
Good
7.24μg/m³
PM2.5
16.05μg/m³
PM10
29.03ppb
O3
0.20ppb
SO2
4.39ppb
NO2
0.16ppm
CO
AQI 27
Good
4.27μg/m³
PM2.5
19.29μg/m³
PM10
28.75ppb
O3
0.27ppb
SO2
5.90ppb
NO2
0.21ppm
CO
Air quality data and pollutant measurements for Maine, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Maine, USA is updated every hour.
The worst air quality in Maine, USA in the last 24 hours was observed at 09:00:00 on 2026-02-11.
In the last 24 hrs, the best air quality in Maine, USA was observed at 12:00:00 on 2026-02-11.
The current air quality in Maine, USA is 49, categorized as Good based on real-time data.
The most common pollutant in Maine, USA is PM2.5.
If the air quality in Maine, USA is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Maine, USA is 8.552 μg/m3.
The current PM10 concentration at Maine, USA is 26.639 μg/m3.
The current carbon monoxide (CO) concentration at Maine, USA is 0.219 ppm.
The current sulfur dioxide (SO2) concentration at Maine, USA is 0.563 ppb.
The current ozone (O3) concentration at Maine, USA is 33.677 ppm.
The current nitrogen dioxide (NO2) concentration at Maine, USA is 4.154 ppb.
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