Air Quality in Lewiston, United States

Clear
29.6°C · 16.8% humidity
29.6°
Feels 29.6°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
85 10am
85
85
27 1pm
43
55
64 4pm
70
76
79 7pm
81
83
84 10pm
85
86
86 1am
86
86
87 4am
87
206
206 7am
206
206
Station readings
115
79
87
CAMS model adj +60
25
25
25
25
25
25
25
25
27
27
27
27
27
27
27
27
27
27
27
27
146
146
146
146
AD 728×90

Air Quality Index Trend

21h · 1 stn

Lewiston's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

16.8%
Humidity
22.5 km/h
Wind WSW
1009.6 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
27
6.45 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

21h · 1 station
PM2.56.45 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
AD 300×250
6.45
Median
16.73
Average
3.6
Low
34.0
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -0.4
07-21
37.1° 17.6°
07-22
33.8° 19.2°
0.06 mm
07-23
40.2° 20.1°
07-24
42.2° 18.4°
07-25
33.6° 19.9°
07-26
41.3° 13.3°
07-27
34.1° 21.3°
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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 2026-07-21T20:50 UTC.