August
2006
Air Quality Summary
Air quality during
August
was in the "Good" category
for 29 days, and
in the "Moderate" category
for 2 days.
Precipitation was 1.0 inches
below normal levels in the Puget
Sound region, with SeaTac airport receiving 0.02 inches
of rainfall. The airport average monthly temperature of 65.9° F
was 0.3 degrees
above normal for
August
with a maximum temperature of 87° F
on the 27th.
A minimum temperature of 51° F
occurred on the 31st.
-
The highest PM2.5 value of
15 µg/m3 was in the
"Good" category (AQI of 50)
and was measured on Friday the 18th at the James St and Central Ave site in Kent.
-
The highest PM10 value of
46 µg/m3 was in the
"Good" category (AQI of 43)
and was measured on Wednesday the 16th at the Duwamish site in Seattle.
-
Ozone 8 hour standard - The highest 8-hour average for ozone was 0.072 ppm,
in the "Moderate" category (AQI of 69),
and occurred on Sunday, August 20th at the Mud Mountain site in Enumclaw.
-
The highest 8-hour average for carbon monoxide was 1.0
ppm, in the "Good" category (AQI of 11),
and occurred during the early morning hours of Sunday the 20th, the late evening hours of Saturday the 26th, and the late afternoon hours of
Wednesday the 30th at the 148th Ave NE site in Bellevue.
-
Air quality in the month of
August
exceeded our PM2.5 health goal in Snohomish County times,
in King County times,
in Pierce County times
and in Kitsap County times.
