Stay updated with real-time air quality in Biddeford, 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)
34
Good
Biddeford, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.88 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.14 μg/m³
0
55
155
255
425
605+
36.71 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
3.41 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Biddeford, Maine
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AQI 34
Good
4.25μg/m³
PM2.5
8.22μg/m³
PM10
36.84ppb
O3
0.66ppb
SO2
3.43ppb
NO2
0.16ppm
CO
AQI 33
Good
4.11μg/m³
PM2.5
12.04μg/m³
PM10
36.33ppb
O3
0.68ppb
SO2
2.91ppb
NO2
0.16ppm
CO
AQI 34
Good
4.64μg/m³
PM2.5
10.32μg/m³
PM10
36.76ppb
O3
0.64ppb
SO2
3.90ppb
NO2
0.16ppm
CO
AQI 34
Good
4.33μg/m³
PM2.5
8.33μg/m³
PM10
37.42ppb
O3
0.65ppb
SO2
3.42ppb
NO2
0.17ppm
CO
AQI 33
Good
4.12μg/m³
PM2.5
12.36μg/m³
PM10
36.00ppb
O3
0.68ppb
SO2
2.90ppb
NO2
0.16ppm
CO
AQI 34
Good
4.47μg/m³
PM2.5
10.43μg/m³
PM10
36.61ppb
O3
0.65ppb
SO2
3.42ppb
NO2
0.17ppm
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 Biddeford, Maine is updated every hour.
The worst air quality in Biddeford, Maine in the last 24 hours was observed at 02:00:00 on 2026-03-06.
In the last 24 hrs, the best air quality in Biddeford, Maine was observed at 03:00:00 on 2026-03-06.
The current air quality in Biddeford, Maine is 34, categorized as Good based on real-time data.
The most common pollutant in Biddeford, Maine is O3.
If the air quality in Biddeford, Maine is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Biddeford, Maine is 4.881 μg/m3.
The current PM10 concentration at Biddeford, Maine is 13.136 μg/m3.
The current carbon monoxide (CO) concentration at Biddeford, Maine is 0.184 ppm.
The current sulfur dioxide (SO2) concentration at Biddeford, Maine is 0.653 ppb.
The current ozone (O3) concentration at Biddeford, Maine is 36.714 ppm.
The current nitrogen dioxide (NO2) concentration at Biddeford, Maine is 3.41 ppb.
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