Stay updated with real-time air quality in Waterville, 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)
36
Good
Waterville, Maine
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.43 μg/m³
0
55
155
255
425
605+
39.21 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
1.33 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Waterville, Maine
Waterville, Maine
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AQI 37
Good
2.50μg/m³
PM2.5
6.02μg/m³
PM10
40.00ppb
O3
0.63ppb
SO2
1.89ppb
NO2
0.13ppm
CO
AQI 34
Good
4.58μg/m³
PM2.5
10.04μg/m³
PM10
37.18ppb
O3
0.57ppb
SO2
1.76ppb
NO2
0.13ppm
CO
AQI 34
Good
4.57μg/m³
PM2.5
10.08μg/m³
PM10
37.19ppb
O3
0.57ppb
SO2
1.76ppb
NO2
0.13ppm
CO
AQI 39
Good
5.78μg/m³
PM2.5
16.04μg/m³
PM10
41.69ppb
O3
0.69ppb
SO2
1.59ppb
NO2
0.12ppm
CO
AQI 41
Good
3.06μg/m³
PM2.5
12.65μg/m³
PM10
43.63ppb
O3
0.53ppb
SO2
1.44ppb
NO2
0.14ppm
CO
AQI 39
Good
5.49μg/m³
PM2.5
16.50μg/m³
PM10
41.63ppb
O3
0.69ppb
SO2
1.58ppb
NO2
0.12ppm
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 Waterville, Maine is updated every hour.
The worst air quality in Waterville, Maine in the last 24 hours was observed at 03:00:00 on 2026-06-15.
In the last 24 hrs, the best air quality in Waterville, Maine was observed at 07:00:00 on 2026-06-14.
The current air quality in Waterville, Maine is 36, categorized as Good based on real-time data.
The most common pollutant in Waterville, Maine is O3.
If the air quality in Waterville, Maine is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Waterville, Maine is 3.177 μg/m3.
The current PM10 concentration at Waterville, Maine is 12.427 μg/m3.
The current carbon monoxide (CO) concentration at Waterville, Maine is 0.13 ppm.
The current sulfur dioxide (SO2) concentration at Waterville, Maine is 0.574 ppb.
The current ozone (O3) concentration at Waterville, Maine is 39.206 ppm.
The current nitrogen dioxide (NO2) concentration at Waterville, Maine is 1.335 ppb.
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