Air Quality in Willoughby, United States

Drizzle
24.8°C · 74.9% humidity
24.8°
Feels 24.8°
65
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast
54 3pm
34
27
65 6pm
52
45
39 9pm
35
32
30 12am
29
28
27 3am
26
26
26 6am
27
54
25 9am
25
25
25 12pm
25
25
AD 728×90

Air Quality Index Trend

45h · 2 stn

Willoughby's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Willoughby is 1.2× the WHO 24-hour guideline of 15 µg/m³.

74.9%
Humidity
56.2 km/h
Wind ENE
1013.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
65
18.75 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Willoughby?

Temperature & Precipitation

PM2.5 Trend

45h · 2 stations
PM2.518.75 µg/m³ ×1.2 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (2 stations within 25 km)
18.75
Median
18.75
Average
18.4
Low
19.1
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -8.8

What is the 7-day forecast for Willoughby?

07-21
27.8° 24.4°
1.63 mm
07-22
24.8° 21.6°
0.75 mm
07-23
23.5° 18.7°
1.63 mm
07-24
25.3° 19.7°
07-25
22.7° 20.0°
6.81 mm
07-26
23.8° 22.5°
4.56 mm
07-27
27.0° 21.7°
1.31 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Willoughby?

63
Nature Center at Shaker Lakes
22.2 km PM2.5: 17.7 µg/m³
64
Chagrin-Warrensville
22.2 km PM2.5: 18.3 µg/m³
34
Cleveland Near Road, Ohio, USA
23.3 km PM2.5: 8.2 µg/m³
42
Cleveland Near Road, Ohio, USA
23.3 km PM2.5: 10.1 µg/m³

What cities are near Willoughby?

65 Eastlake 60 Mentor 65 Euclid 65 Mayfield Heights 65 South Euclid 65 Collinwood 79 Painesville 65 Cleveland Heights 65 East Cleveland 65 Glenville
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T22:38 UTC.