ID: 1859

AQSQID: 181270023

Site Name: Portage-Hwy 12

Added: April 21, 2020, 6:24 p.m.

Updated: March 4, 2021, 11:32 a.m.

Location: Portage (Dunes Hwy), IN

Reporting: True, Located: True

Current AQI: 52.0

Portage (Dunes Hwy) IN, US: 41.6167, -87.1458

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 56.8 μg/m3 (52) N/A 52.0
 
March 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (13) N/A 13.0
 
March 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.6 μg/m3 (32) N/A 32.0
 
March 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.5 μg/m3 (31) N/A 31.0
 
March 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 21.4 μg/m3 (20) N/A 20.0
 
March 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.1 μg/m3 (14) N/A 14.0
 
March 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.3 μg/m3 (16) N/A 16.0
 
March 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.6 μg/m3 (23) N/A 23.0
 
March 4, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 37.6 μg/m3 (35) N/A 35.0
 
March 4, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.8 μg/m3 (15) N/A 15.0
 
March 4, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 18.1 μg/m3 (17) N/A 17.0
 
March 3, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) N/A 25.0
 
March 3, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 68.6 μg/m3 (58) N/A 58.0
 
March 3, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 83.6 μg/m3 (66) N/A 66.0
 
March 3, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 109.2 μg/m3 (78) N/A 78.0
 
March 3, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 100.8 μg/m3 (74) N/A 74.0
 
March 3, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.9 μg/m3 (34) N/A 34.0
 
March 3, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.2 μg/m3 (1) N/A 1.0
 
March 3, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.7 μg/m3 (17) N/A 17.0
 
March 3, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
March 3, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.1 μg/m3 (10) N/A 10.0
 
March 3, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.3 μg/m3 (9) N/A 9.0
 
March 3, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.7 μg/m3 (8) N/A 8.0
 
March 3, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.3 μg/m3 (7) N/A 7.0
 
March 3, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) N/A 6.0
 
March 3, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) N/A 7.0
 
March 3, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.6 μg/m3 (7) N/A 7.0
 
March 3, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) N/A 7.0
 
March 3, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) N/A 7.0
 
March 3, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) N/A 8.0
 
March 3, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.7 μg/m3 (9) N/A 9.0
 
March 3, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) N/A 9.0
 
March 3, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (9) N/A 9.0
 
March 2, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.5 μg/m3 (8) N/A 8.0
 
March 2, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) N/A 8.0
 
March 2, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.1 μg/m3 (7) N/A 7.0
 
March 2, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (7) N/A 7.0
 
March 2, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (7) N/A 7.0
 
March 2, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.5 μg/m3 (7) N/A 7.0
 
March 2, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) N/A 9.0
 
March 2, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) N/A 8.0
 
March 2, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (8) N/A 8.0
 
March 2, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.3 μg/m3 (11) N/A 11.0
 
March 2, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.3 μg/m3 (12) N/A 12.0
 
March 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.6 μg/m3 (11) N/A 11.0
 
March 2, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) N/A 13.0
 
March 2, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.8 μg/m3 (12) N/A 12.0
 
March 2, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.3 μg/m3 (10) N/A 10.0
 
March 2, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) N/A 11.0
 
March 2, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.5 μg/m3 (22) N/A 22.0
 
March 2, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
March 2, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.6 μg/m3 (14) N/A 14.0
 
March 2, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.5 μg/m3 (16) N/A 16.0
 
March 2, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
March 2, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 10.1 μg/m3 (10) N/A 10.0
 
March 1, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.4 μg/m3 (21) N/A 21.0
 
March 1, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.1 μg/m3 (33) N/A 33.0
 
March 1, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.8 μg/m3 (34) N/A 34.0
 
March 1, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.8 μg/m3 (32) N/A 32.0
 
March 1, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 41.4 μg/m3 (39) N/A 39.0
 
March 1, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 46.2 μg/m3 (43) N/A 43.0
 
March 1, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.2 μg/m3 (33) N/A 33.0
 
March 1, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.2 μg/m3 (31) N/A 31.0
 
March 1, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.4 μg/m3 (31) N/A 31.0
 
March 1, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 22.7 μg/m3 (22) N/A 22.0
 
March 1, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 25.5 μg/m3 (24) N/A 24.0
 
March 1, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 24.4 μg/m3 (23) N/A 23.0
 
March 1, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.5 μg/m3 (16) N/A 16.0
 
March 1, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.9 μg/m3 (12) N/A 12.0
 
March 1, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (9) N/A 9.0
 
March 1, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.9 μg/m3 (10) N/A 10.0
 
March 1, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.2 μg/m3 (10) N/A 10.0
 
March 1, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (13) N/A 13.0
 
March 1, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.4 μg/m3 (10) N/A 10.0
 
March 1, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.9 μg/m3 (15) N/A 15.0
 
March 1, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (18) N/A 18.0
 
March 1, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.8 μg/m3 (15) N/A 15.0
 
March 1, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.2 μg/m3 (13) N/A 13.0
 
March 1, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 17.8 μg/m3 (17) N/A 17.0
 
Feb. 28, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.4 μg/m3 (17) N/A 17.0
 
Feb. 28, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.6 μg/m3 (13) N/A 13.0
 
Feb. 28, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.2 μg/m3 (11) N/A 11.0
 
Feb. 28, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (8) N/A 8.0
 
Feb. 28, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.3 μg/m3 (5) N/A 5.0
 
Feb. 28, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.5 μg/m3 (2) N/A 2.0
 
Feb. 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.2 μg/m3 (5) N/A 5.0
 
Feb. 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (8) N/A 8.0
 
Feb. 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.3 μg/m3 (7) N/A 7.0
 
Feb. 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.4 μg/m3 (7) N/A 7.0
 
Feb. 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) N/A 8.0
 
Feb. 28, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) N/A 9.0
 
Feb. 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (9) N/A 9.0
 
Feb. 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.6 μg/m3 (9) N/A 9.0
 
Feb. 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (9) N/A 9.0
 
Feb. 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.8 μg/m3 (10) N/A 10.0
 
Feb. 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.2 μg/m3 (11) N/A 11.0
 
Feb. 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
Feb. 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) N/A 12.0
 
Feb. 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.2 μg/m3 (14) N/A 14.0
 
Feb. 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.7 μg/m3 (14) N/A 14.0
 
Feb. 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (15) N/A 15.0
 
Feb. 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.2 μg/m3 (16) N/A 16.0
 
Feb. 28, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 18.4 μg/m3 (18) N/A 18.0
 
Feb. 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 18.5 μg/m3 (18) N/A 18.0
 
Feb. 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.9 μg/m3 (15) N/A 15.0
 
Feb. 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.2 μg/m3 (14) N/A 14.0
 
Feb. 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.3 μg/m3 (14) N/A 14.0
 
Feb. 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.7 μg/m3 (13) N/A 13.0
 
Feb. 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.6 μg/m3 (11) N/A 11.0
 
Feb. 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.8 μg/m3 (10) N/A 10.0
 
Feb. 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.1 μg/m3 (10) N/A 10.0
 
Feb. 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.3 μg/m3 (7) N/A 7.0
 
Feb. 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.8 μg/m3 (7) N/A 7.0
 
Feb. 27, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.5 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (9) N/A 9.0
 
Feb. 27, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.5 μg/m3 (10) N/A 10.0
 
Feb. 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.3 μg/m3 (9) N/A 9.0
 
Feb. 27, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.2 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.2 μg/m3 (8) N/A 8.0
 
Feb. 27, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.3 μg/m3 (11) N/A 11.0
 
Feb. 27, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (10) N/A 10.0
 
Feb. 27, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) N/A 11.0
 
Feb. 27, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 11.8 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.1 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.9 μg/m3 (9) N/A 9.0
 
Feb. 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (8) N/A 8.0
 
Feb. 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) N/A 8.0
 
Feb. 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 0.1 μg/m3 (1) N/A 1.0
 
Feb. 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (9) N/A 9.0
 
Feb. 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.6 μg/m3 (8) N/A 8.0
 
Feb. 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.5 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.1 μg/m3 (12) N/A 12.0
 
Feb. 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) N/A 13.0
 
Feb. 26, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.7 μg/m3 (11) N/A 11.0
 
Feb. 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.1 μg/m3 (10) N/A 10.0
 
Feb. 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (10) N/A 10.0
 
Feb. 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.1 μg/m3 (10) N/A 10.0
 
Feb. 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.5 μg/m3 (10) N/A 10.0
 
Feb. 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.6 μg/m3 (10) N/A 10.0
 
Feb. 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (9) N/A 9.0
 
Feb. 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.9 μg/m3 (10) N/A 10.0
 
Feb. 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.6 μg/m3 (13) N/A 13.0
 
Feb. 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.4 μg/m3 (15) N/A 15.0
 
Feb. 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.6 μg/m3 (17) N/A 17.0
 
Feb. 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.4 μg/m3 (19) N/A 19.0
 
Feb. 26, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 27.5 μg/m3 (26) N/A 26.0
 
Feb. 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.9 μg/m3 (32) N/A 32.0
 
Feb. 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 33.0 μg/m3 (31) N/A 31.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 30.6 μg/m3 (29) N/A 29.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 19.3 μg/m3 (18) N/A 18.0
 
Feb. 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.7 μg/m3 (17) N/A 17.0
 
Feb. 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.4 μg/m3 (22) N/A 22.0
 
Feb. 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.8 μg/m3 (23) N/A 23.0
 
Feb. 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.7 μg/m3 (15) N/A 15.0
 
Feb. 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.8 μg/m3 (12) N/A 12.0
 
Feb. 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 23.3 μg/m3 (22) N/A 22.0
 
Feb. 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.6 μg/m3 (16) N/A 16.0
 
Feb. 25, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 12.1 μg/m3 (12) N/A 12.0
 
Feb. 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.8 μg/m3 (12) N/A 12.0
 
Feb. 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.1 μg/m3 (13) N/A 13.0
 
Feb. 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.8 μg/m3 (12) N/A 12.0
 
Feb. 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.5 μg/m3 (10) N/A 10.0
 
Feb. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.1 μg/m3 (7) N/A 7.0
 
Feb. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (7) N/A 7.0