Stay updated with real-time air quality in Ottawa, Illinois 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)
54
Moderate
Ottawa, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.43 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.60 μg/m³
0
55
155
255
425
605+
23.81 ppb
0
55
71
86
201
201+
0.12 ppb
0
36
76
186
605
1005+
2.04 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Ottawa, Illinois
Ottawa, Illinois
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AQI 56
Moderate
12.06μg/m³
PM2.5
53.96μg/m³
PM10
46.23ppb
O3
0.41ppb
SO2
0.94ppb
NO2
0.17ppm
CO
AQI 49
Good
8.77μg/m³
PM2.5
33.18μg/m³
PM10
37.87ppb
O3
0.65ppb
SO2
2.32ppb
NO2
0.23ppm
CO
AQI 49
Good
8.76μg/m³
PM2.5
38.41μg/m³
PM10
36.66ppb
O3
0.64ppb
SO2
2.35ppb
NO2
0.23ppm
CO
AQI 49
Good
8.76μg/m³
PM2.5
38.47μg/m³
PM10
37.14ppb
O3
0.62ppb
SO2
2.35ppb
NO2
0.23ppm
CO
AQI 49
Good
8.64μg/m³
PM2.5
37.04μg/m³
PM10
37.47ppb
O3
0.60ppb
SO2
2.31ppb
NO2
0.23ppm
CO
AQI 44
Good
8.32μg/m³
PM2.5
37.25μg/m³
PM10
38.37ppb
O3
0.55ppb
SO2
2.64ppb
NO2
0.22ppm
CO
Air quality and pollutant data for Illinois, 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 Ottawa, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Ottawa, Illinois was at its worst at 07:00:00 on 2025-07-16.
In the last 24 hours, the best air quality in Ottawa, Illinois was observed at 03:00:00 on 2025-07-16.
As of now, the AQI in Ottawa, Illinois is 58, indicating Moderate conditions.
Ottawa, Illinois air has the highest levels of PM2.5.
Poor air quality in Ottawa, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Ottawa, Illinois are currently 13.08 μg/m3.
The PM10 concentration in Ottawa, Illinois is 59 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Ottawa, Illinois is 0.165 ppm.
Currently, Ottawa, Illinois has a sulfur dioxide (SO2) concentration of 0.37 ppb.
The current ozone (O3) level in Ottawa, Illinois at the moment is 48.016 ppm.
Nitrogen dioxide (NO2) level in Ottawa, Illinois at the moment is 0.921 ppb.
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