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)
82
Moderate
Ottawa, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
26.32 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
114.37 μg/m³
0
55
155
255
425
605+
33.36 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
3.90 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Ottawa, Illinois
Ottawa, Illinois
Scroll To Air Quality MapLoading...
AQI 36
Good
5.86μg/m³
PM2.5
25.41μg/m³
PM10
38.72ppb
O3
0.29ppb
SO2
3.98ppb
NO2
0.21ppm
CO
AQI 33
Good
5.66μg/m³
PM2.5
36.08μg/m³
PM10
33.08ppb
O3
0.34ppb
SO2
9.10ppb
NO2
0.77ppm
CO
AQI 84
Moderate
27.32μg/m³
PM2.5
97.69μg/m³
PM10
35.58ppb
O3
0.32ppb
SO2
9.94ppb
NO2
0.79ppm
CO
AQI 64
Moderate
13.46μg/m³
PM2.5
81.92μg/m³
PM10
32.52ppb
O3
0.31ppb
SO2
10.08ppb
NO2
0.78ppm
CO
AQI 37
Good
5.40μg/m³
PM2.5
39.88μg/m³
PM10
33.38ppb
O3
0.32ppb
SO2
9.92ppb
NO2
0.77ppm
CO
AQI 58
Moderate
12.65μg/m³
PM2.5
55.03μg/m³
PM10
34.82ppb
O3
0.32ppb
SO2
9.26ppb
NO2
0.77ppm
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 11:00:00 on 2025-06-04.
In the last 24 hours, the best air quality in Ottawa, Illinois was observed at 01:00:00 on 2025-06-04.
As of now, the AQI in Ottawa, Illinois is 82, 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 26.318 μg/m3.
The PM10 concentration in Ottawa, Illinois is 114.371 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Ottawa, Illinois is 0.216 ppm.
Currently, Ottawa, Illinois has a sulfur dioxide (SO2) concentration of 0.339 ppb.
The current ozone (O3) level in Ottawa, Illinois at the moment is 33.36 ppm.
Nitrogen dioxide (NO2) level in Ottawa, Illinois at the moment is 3.905 ppb.
All Rights Reserved © Ambee Inc. 2025